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Rhythm Pharmaceuticals

rytm · NASDAQ Healthcare
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FY2021 Annual Report · Rhythm Pharmaceuticals
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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

‘

Washington, D.C. 20549

FORM 10-K

☒

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2021
OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from           to         
Commission file number 001-38223

RHYTHM PHARMACEUTICALS, INC.

(Exact name of registrant as specified in its charter)

Delaware
(State or other jurisdiction of
incorporation or organization)

46-2159271
(I.R.S. Employer
Identification No.)

222 Berkeley Street
12th Floor
Boston, MA 02116
(Address of principal executive offices)
(Zip Code)

(857) 264-4280
 (Registrant’s telephone number, including area code)
N/A
(Former name, former address and former fiscal year, if changed since last report)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class
Common Stock, $0.001 par value per share

Trading Symbol(s)
RYTM

Name of each exchange on which registered
The Nasdaq Stock Market LLC (Nasdaq Global Market)

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ☐  No   ☒
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes  ☐  No  ☒

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15 (d) of the Securities Exchange Act of 1934 during the preceding
12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.  Yes  ☐  No
 ☒

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T  
(§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes  ☐  No  ☒

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth
company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer ☒

Non-accelerated filer ☐

               Accelerated filer ☐

Smaller reporting company ☐
Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial 
accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ☐
Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial
reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. ☒
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes  ☐  No  ☒.

The aggregate market value of the voting and non-voting common equity held by non-affiliates of the registrant was approximately $884.4 million, based on the closing price of
the registrant’s Common Stock on June 30, 2021, the last business day of the registrant’s most recently completed second fiscal quarter. Solely for purposes of this disclosure,
Common Stock held by executive officers, directors and certain stockholders of the registrant as of such date have been excluded because such holders may be deemed to be
affiliates.
There were 50,329,713 shares of the registrant's Common Stock outstanding as of February 22, 2022.

DOCUMENTS INCORPORATED BY REFERENCE
The registrant intends to file a definitive proxy statement for the registrant's 2021 Annual Meeting of Stockholders within 120 days of the end of the fiscal year ended December
31, 2021. Portions of such definitive proxy statement are incorporated by reference into Part III of this Annual Report on Form 10-K.

Table of Contents

RHYTHM PHARMACEUTICALS, INC.
ANNUAL REPORT ON FORM 10-K
For the Year Ended December 31, 2021

Table of Contents

     Page No.

PART I

PART II

Item 1.    Business

Item 1A. Risk Factors

Item 1B. Unresolved Staff Comments

Item 2.    Properties

Item 3.    Legal Proceedings

Item 4.    Mine Safety Disclosures

Item 5.    Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer 

Purchases of Equity Securities

Item 6.   [Reserved]

Item 7.   Management’s Discussion and Analysis of Financial Condition and Results of Operations

Item 7A. Quantitative and Qualitative Disclosures about Market Risk

Item 8.   Financial Statements and Supplementary Data

Item 9.   Changes in and Disagreements with Accountants on Accounting and Financial Disclosures

Item 9A. Controls and Procedures

Item 9B. Other Information

Item 9C. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections

PART III

PART IV

Item 10. Directors, Executive Officers and Corporate Governance

Item 11. Executive Compensation

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related

Stockholder Matters

Item 13. Certain Relationships and Related Transactions and Director Independence

Item 14. Principal Accountant Fees and Services

Item 15. Exhibits and Financial Statement Schedules

Item 16. Form 10-K Summary

SIGNATURES

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CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

This  Annual  Report  on  Form  10-K,  or  this  Annual  Report,  contains  forward-looking  statements  within  the
meaning of Section 27A of the Securities Act of 1933, as amended, or the Securities Act, and Section 21E of the Securities
Exchange Act of 1934, as amended, or the Exchange Act, and is subject to the “safe harbor” created by those sections. Any
statements about our expectations, beliefs, plans, objectives, assumptions or future events or performance are not historical
facts and may be forward-looking. Some of the forward-looking statements can be identified by the use of forward-looking
terms  such  as  “anticipates,”  “believes,”  “could,”  “estimates,”  “expects,”  “intends,”  “may,”  “might,”  “likely,”  “plans,”
“potential,” “predicts,” “projects,” “seeks,” “should,” “target,” “will,” “would,” or similar expressions and the negatives of
those terms include forward-looking statements that involve risks and uncertainties.  Forward-looking statements include,
but are not limited to, statements regarding the marketing and commercialization of IMCIVREE (setmelanotide), and the
timing  of  commercialization,  the  success,  cost  and  timing  of  our  product  development  activities  and  clinical  trials,  our
financial performance, including our expectations regarding our existing cash, operating losses, expenses, sources of future
financing  and  sufficiency  of  cash,  our  ability  to  hire  and  retain  necessary  personnel,  patient  enrollments  and  the  timing
thereof, the timing of announcements regarding results of clinical trials and filing of regulatory applications, our ability to
protect  our  intellectual  property,  our  ability  to  negotiate  our  collaboration  agreements,  if  needed,  our  marketing,
commercial  sales,  and  revenue  generation,  expectations  surrounding  our  manufacturing  arrangements,  the  impact  of  the
COVID-19  pandemic  on  our  business  and  operations  and  our  future  financial  results,  and  the  impact  of  accounting
pronouncements.    We  have  based  these  forward-looking  statements  largely  on  our  current  expectations  and  projections
about  future  events  and  financial  trends  that  we  believe  may  affect  our  business,  financial  condition  and  results  of
operations. We cannot guarantee future results, levels of activity, performance or achievements, and you should not place
undue reliance on our forward-looking statements. Our actual results may differ significantly from the results discussed in
the forward-looking statements. Important factors that might cause such a difference include, but are not limited to, those
set  forth  in  Item  1A.  “Risk  Factors”  and  elsewhere  in  this  Annual  Report.  Moreover,  we  operate  in  an  evolving
environment. New risk factors and uncertainties may emerge from time to time, and it is not possible for management to
predict  all  risk  factors  and  uncertainties.  Except  as  may  be  required  by  law,  we  have  no  plans  to  update  our  forward-
looking statements to reflect events or circumstances after the date of this Annual Report. We caution readers not to place
undue reliance upon any such forward-looking statements, which speak only as of the date made.

Unless the content requires otherwise, references to “Rhythm Pharmaceuticals,” “Rhythm,” “the Company,” “we,”

“our,” and “us,” in this Annual Report refer to Rhythm Pharmaceuticals, Inc. and its subsidiaries.

TRADEMARKS, TRADENAMES AND SERVICE MARKS

This  Annual  Report  may  include  trademarks,  tradenames  and  service  marks  that  are  the  property  of  other
organizations. Solely for convenience, trademarks and tradenames referred to in this Annual Report may appear without
the ® and ™ symbols, but those references are not intended to indicate, in any way, that we will not assert, to the fullest
extent  under  applicable  law,  our  rights  or  that  the  applicable  owner  will  not  assert  its  rights,  to  these  trademarks  and
tradenames.

SUMMARY RISK FACTORS

Our business is subject to numerous risks and uncertainties, including those described in Part I, Item 1A. “Risk
Factors” in this Annual Report. You should carefully consider these risks and uncertainties when investing in our common
stock. The principal risks and uncertainties affecting our business include the following:

● We  are  a  commercial-stage  biopharmaceutical  company  with  a  limited  operating  history  and  have  not
generated any significant revenue from product sales. We have incurred significant operating losses since our
inception,  anticipate  that  we  will  incur  continued  losses  for  the  foreseeable  future  and  may  never  achieve
profitability.

● We will need to raise additional funding, which may not be available on acceptable terms, or at all. Failure to
obtain this necessary capital when needed may force us to delay, limit or terminate our product development
efforts or other operations.

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● The COVID-19 pandemic has and may continue to adversely impact our business, including our preclinical

studies, clinical trials and our commercialization prospects.

● We have only one approved product, which is still in clinical development in additional indications, and we

may not be successful in any future efforts to identify and develop additional product candidates.

● The successful commercialization of IMCIVREE and any other product candidates will depend in part on the
extent  to  which  governmental  authorities,  private  health  insurers,  and  other  third-party  payors  provide
coverage  and  adequate  reimbursement  levels.  Failure  to  obtain  or  maintain  coverage  and  adequate
reimbursement  for  setmelanotide  or  our  other  product  candidates,  if  any  and  if  approved,  could  limit  our
ability to market those products and decrease our ability to generate revenue.

● Positive results from early clinical trials of setmelanotide may not be predictive of the results of later clinical
trials of setmelanotide. If we cannot generate positive results in our later clinical trials of setmelanotide, we
may  be  unable  to  successfully  develop,  obtain  regulatory  approval  for  and  commercialize  additional
indications for setmelanotide.

● The  number  of  patients  suffering  from  each  of  the  MC4R  pathway  deficiencies  is  small  and  has  not  been
established with precision. If the actual number of patients with any of these conditions is smaller than we
had  estimated,  our  revenue  and  ability  to  achieve  profitability  will  be  materially  adversely  affected.
Moreover, our ability to recruit patients to our trials may be materially adversely affected. Patient enrollment
may also be adversely affected by competition and other factors.

● Failures or delays in the commencement or completion of our planned clinical trials of setmelanotide could
result in increased costs to us and could delay, prevent or limit our ability to generate revenue and continue
our business.

● Changes  in  regulatory  requirements,  FDA  guidance  or  unanticipated  events  during  our  clinical  trials  of
setmelanotide  may  occur,  which  may  result  in  changes  to  clinical  trial  protocols  or  additional  clinical  trial
requirements,  which  could  result  in  increased  costs  to  us  and  could  delay  our  development  timeline.
Additionally,  it  may  be  necessary  to  validate  different  or  additional  instruments  for  measuring  subjective
symptoms, and to show that setmelanotide has a clinically meaningful impact on those endpoints in order to
obtain regulatory approval.

● Even if we complete the necessary clinical trials, the regulatory and marketing approval process is expensive,
time  consuming  and  uncertain  and  may  prevent  us  from  obtaining  additional  approvals  for  the
commercialization  of  setmelanotide  beyond  FDA  approval  for  obesity  due  to  proopiomelanocortin,  or
POMC, proprotein convertase subtilisin/kexin type 1, or PCSK1, or leptin receptor, or LEPR, deficiencies in
the United States. We depend entirely on the success of setmelanotide, and we cannot be certain that we will
be able to obtain additional regulatory approvals for, or successfully commercialize, setmelanotide. If we are
not able to obtain, or if there are delays in obtaining, required additional regulatory approvals, we will not be
able to commercialize setmelanotide in additional indications in the United States or in foreign jurisdictions,
and our ability to generate revenue will be materially impaired.

● Our approach to treating patients with MC4R pathway deficiencies requires the identification of patients with
unique  genetic  subtypes,  for  example,  POMC  genetic  deficiency.  The  FDA  or  other  equivalent  competent
authorities  in  foreign  jurisdictions  could  require  the  clearance,  approval  or  CE  marking  of  an  in  vitro
companion  diagnostic  device  to  ensure  appropriate  selection  of  patients  as  a  condition  of  approving
setmelanotide in additional indications. The requirement that we obtain clearance, approval or CE mark of an
in vitro companion diagnostic device will require substantial financial resources, and could delay or prevent
the  receipt  of  additional  regulatory  approvals  for  setmelanotide,  or  adversely  affect  those  we  have  already
obtained.

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● Our  product  candidates  may  cause  undesirable  side  effects  that  could  delay  or  prevent  their  regulatory
approval, limit the commercial profile of an approved labeling or result in significant negative consequences
following marketing approval, if any.

● Our  industry  is  intensely  competitive.  If  we  are  not  able  to  compete  effectively  against  current  and  future
competitors,  we  may  not  be  able  to  generate  sufficient  revenue  from  the  sale  of  IMCIVREE,  our  business
will not grow and our financial condition and operations will suffer.

● If  we  are  unable  to  adequately  protect  our  proprietary  technology  or  maintain  issued  patents  that  are
sufficient  to  protect  setmelanotide,  others  could  compete  against  us  more  directly,  which  would  have  a
material adverse impact on our business, results of operations, financial condition and prospects.

PART I

Item 1. Business

Overview

We  are  a  global,  commercial-stage  biopharmaceutical  company  focused  on  changing  the  paradigm  for  the
treatment  of  rare  genetic  diseases  of  obesity,  which  are  characterized  by  early-onset,  severe  obesity  and  hyperphagia,  a
pathological  and  insatiable  hunger.  While  obesity  affects  hundreds  of  millions  of  people  worldwide,  we  are  advancing
IMCIVREE™ (setmelanotide) as a precision medicine strategy for a subset of individuals who have severe obesity due to
genetic  variants  that  impair  the  melanocortin-4  receptor  (MC4R)  pathway,  a  pathway  in  the  brain  that  is  responsible  for
regulating hunger, caloric intake and energy expenditure, which consequently affect body weight. IMCIVREE, an MC4R
agonist for which we hold worldwide rights, is the first-ever therapy developed for patients with certain ultra-rare genetic
diseases of obesity that is approved or authorized in the United States, European Union (EU) or Great Britain. We made
IMCIVREE  commercially  available  in  the  United  States  for  patients  6  years  and  older  with  obesity  due  to
proopiomelanocortin  (POMC),  proprotein  convertase  subtilisin/kexin  type  1  (PCSK1),  or  leptin  receptor  (LEPR)
deficiency in early 2021, and we are working to achieve market access in several European countries in 2022. In addition
to initial commercial efforts, we are preparing to bring IMCIVREE to additional populations in 2022 and beyond. We are
advancing  a  broad  clinical  development  program  for  setmelanotide  in  patients  with  additional  rare  genetic  diseases  of
obesity in an effort to expand the approved indication to bring this potential therapy to approximately 100,000 to 200,000
patients in the United States and a similarly-sized rare patient population in Europe.

IMCIVREE  was  approved  in  November  2020  by  the  U.S.  Food  and  Drug  Administration  (FDA)  for  chronic
weight management in adult and pediatric patients 6 years of age and older with obesity due to POMC, PCSK1 or LEPR
deficiency confirmed by genetic testing demonstrating variants in POMC, PCSK1, or LEPR genes that are interpreted as
pathogenic, likely pathogenic, or of uncertain significance. The European Commission (EC) and Great Britain’s Medicines
&  Healthcare  Products  Regulatory  Agency  (MHRA),  in  July  and  September  2021,  respectively,  granted  marketing
authorization to IMCIVREE for the treatment of obesity and the control of hunger associated with genetically confirmed
loss-of-function biallelic POMC, including PCSK1, deficiency or biallelic LEPR deficiency in adults and children 6 years
of  age  and  above.  These  approvals  were  based  on  Phase  3  data  demonstrating  a  statistically  significant  and  clinically
meaningful reduction of weight and hunger in patients 12 years old or older with severe obesity due to POMC, PCSK1 or
LEPR  deficiency.  In  addition  to  the  United  States  and  Europe/UK,  we  and  our  partners  are  seeking  approval  for
IMCIVREE to treat patients with these genetic obesities in Israel, China, Hong Kong and Macau.  

Additionally,  we  are  seeking  regulatory  approvals  in  the  United  States  and  Europe  for  setmelanotide  to  treat
obesity and control hunger in patients with Bardet-Biedl syndrome (BBS) or Alström syndrome. In November 2021, we
announced  the  U.S.  FDA  has  accepted  for  filing  our  supplemental  New  Drug  Application  (sNDA)  for  setmelanotide
seeking to expand the approved label to include patients with BBS or Alström syndrome, granted us priority review for this
sNDA  and  assigned  a  Prescription  Drug  User  Fee  Act  (PDUFA)  goal  date  of  June  16,  2022.  In  October  2021,  we
announced that we submitted a Type II variation application to the European Medicines Agency (EMA) for setmelanotide
for  the  treatment  of  obesity  and  control  of  hunger  in  adult  and  pediatric  patients  6  years  of  age  and  older  with  BBS  or
Alström syndrome. These regulatory submissions are based on positive results from a pivotal Phase 3 clinical trial that

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met its primary and all key secondary endpoints and achieved clinically meaningful and statistically significant reductions
in body weight and in hyperphagia associated with these syndromes. The submissions include a series of comprehensive
individual  patient  narratives  supporting  the  disease  burden  of  BBS.    Our  belief  that  setmelanotide,  if  approved,  has  the
potential  to  offer  the  first  therapeutic  option  for  the  early-onset,  severe  obesity  and  unrelenting  hunger  that  characterize
these  syndromes.    Recently,  we  have  decided  to  withdraw  the  Alström  syndrome  indication  from  the  pending  Type  II
variation application based on feedback from the EMA.

We  also  are  advancing  a  broad  clinical  development  program  evaluating  setmelanotide  in  several  ongoing  and
planned clinical trials, and we are leveraging what we believe is the largest known DNA database focused on obesity - with
approximately 45,000 sequencing samples as of December 31, 2021 - to improve the understanding, diagnosis and care of
people  living  with  severe  obesity  due  to  certain  variants  in  genes  associated  with  the  MC4R  pathway.  Having  achieved
proof-of-concept in our ongoing exploratory Phase 2 Basket Study evaluating setmelanotide in patients with severe obesity
driven by variants in several different MC4R pathway associated genes, we expect to initiate in the first half of 2022, the
pivotal Phase 3 EMANATE clinical trial, a randomized, double-blind, placebo-controlled trial to evaluate setmelanotide in
five independent sub-studies in patients with obesity due to a heterozygous variant of the POMC/PCSK1 genes or LEPR
gene, certain rare variants of the SRC1 gene or the SH2B1 gene, or the N221D variant in the PCSK1 gene. We also have
initiated  the  Phase  2  DAYBREAK  clinical  trial  designed  to  evaluate  setmelanotide  in  patients  who  carry  a  confirmed
variant  in  one  or  more  of  31  additional  genes  with  strong  or  very  strong  relevance  to  the  MC4R  pathway.  Our  broad
clinical program evaluating setmelanotide in rare diseases of obesity also includes the ongoing exploratory Phase 2 Basket
study,  an  ongoing  Phase  2  study  evaluating  setmelanotide  in  patients  with  hypothalamic  obesity,  a  Phase  3  study  in
pediatric  patients  with  MC4R  pathway  deficiencies  between  the  ages  of  2  and  6  years  old,  and  potential  registration-
enabling study with our once-weekly formulation of setmelanotide.

We are taking a simple, three-step approach in our clinical development programs that we expect will translate to
the real-world practice of medicine for MC4R pathway-related obesities. First, we will identify patients with early-onset
severe obesity (BMI>40 kg/m2 in adults or BMI≥ 95th percentile for age and gender for patients 6 to 16 years of age) and
hyperphagia. Second, with genetic testing, we will seek to confirm that these patients have a variant in one of 36 genes (or
more) related to the MC4R pathway. If these individuals test positive for such a genetic variant, they would be eligible for
access  to  IMCIVREE  or  enrollment  in  a  clinical  trial  evaluating  setmelanotide.  In  clinical  trials  across  several  different
genetic deficiencies, we have seen patients respond to this precision treatment with rapid weight loss of 5 % or more in 12
to 16 weeks. Based on our experience treating more than 100 patients in our Phase 2 and Phase 3 clinical studies, patients
who  achieve  at  least  5  %  weight  loss  at  approximately  12  to  16  weeks  on  setmelanotide  therapy  tend  to  achieve  10  %
weight loss or more within a year, hence these patients demonstrate a robust clinically meaningful response to treatment.

Our  sequencing-based  epidemiology  estimates  show  that  each  of  these  genetically-defined  MC4R  pathway
deficiencies  number  in  the  rare  or  ultra-rare  category,  according  to  established  definitions  of  rare  disease  patient
populations. Our epidemiology estimates are approximately 5,000 for U.S. patients in initial indications, including obesity
due to biallelic POMC, PCSK1 or LEPR deficiencies, and BBS and Alström syndrome. Based on internal sequencing data,
we believe the established epidemiology estimates for BBS ultimately may prove to underestimate the number of people
with this syndrome. The epidemiology estimates for the indications being studied in our Phase 3 EMANATE trial suggest
that between 100,000 to 200,000 U.S. patients with one of these genetically driven obesities have the potential to respond
to setmelanotide. Despite the combined potential addressable patient population likely being larger than rare populations of
each individual genetic disorder, these patients face similar challenges as other patients with rare diseases, namely lack of
awareness, resources, tests, tools and especially therapeutic options.

We  are  working  to  expand  access  to  IMCIVREE  globally,  beginning  with  obesities  from  POMC,  PCSK1  and
LEPR deficiencies, as we advance towards regulatory approvals in BBS and potentially Alström syndrome and expand our
clinical  development  programs.  Our  disease  awareness  and  patient  finding  efforts  are  aligned  with  a  singular  focus  on
building a community of caregivers and healthcare providers focused on transforming the treatment of these diseases. We
have multiple teams in the field in the United States and Europe engaging with physicians who treat patients with severe
obesity.  We  continue  to  bring  health  care  providers  together  with  our  Genetic  Obesity  Learning  Development  (GOLD)
Academy, a series of U.S. based non-CME programs we sponsor, as well as additional educational and awareness events
directed towards patients and their families and health care providers. And our sequencing efforts, now primarily focused

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on  our  Uncovering  Rare  Obesity™  (URO)  sponsored  genetic  testing  program,  fuel  MC4R  pathway  research,  disease
education and awareness and patient finding.

With approximately 140 employees in the United States and Europe as of January 31, 2022, a rapidly expanding
network of key opinion leaders, and an increasing number of treated patients, we are focused on changing the paradigm for
the  treatment  of  rare  genetic  diseases  of  obesity.  Our  focused  disease  awareness  and  patient  finding  efforts  fuel  the  key
elements of our strategy, including:

● Rapidly advance development of setmelanotide to reach as many patients as possible: We  are  focused
on expanding access to setmelanotide in the United States, Europe, Great Britain and select other markets for
our initial indications and preparing for a successful U.S. launch of setmelanotide for BBS and potentially
Alström syndrome, pending FDA approval by the June 2022 PDUFA date. Additionally, we are executing on
the clinical trials which, if successful, potentially will enable registration of setmelanotide in an expanding
number of indications. With multiple Phase 2 and 3 trials, we anticipate bringing approximately 100 clinical
trials sites in the United States, Europe, Middle East and China. Each of these trial sites will serve as a local
hub for as many as five to 10 more hospitals and obesity clinics in our growing referral network, and we will
focus  awareness  and  communications  efforts  geographically  to  support  genetic  testing  around  trial  sites  in
order to build these local referral networks to support trial recruitment and enrollment.  

● Ensure  global  access  to  IMCIVREE:  We  are  actively  pursuing  a  global  strategy  for  our  clinical
development,  commercial  and  community  building  programs.  In  2021,  we  laid  the  foundation  for  an
emerging global organization focused on North America and major markets in Europe. We have established
initial  partnerships  in  Asia  and  the  Middle  East,  and  we  are  actively  exploring  opportunities  to  provide
setmelanotide to patients in South America.

● Leverage  genetic  testing  programs  to  support  clinical  trial  enrollment  and  commercial  launch
activities: We are committed to expanding our obesity DNA database by expanding access and availability to
genetic  testing  for  individuals  with  early-onset,  severe  obesity  and  hyperphagia.  Approximately  50%  of
patients with early-onset severe obesity test positive for a variant in one of 36 MC4R pathway genes which
we are studying in our phase 2 and 3 trials. We will continue to expand our genetic testing effort focusing
initially  on  clinical  trial  enrollment  and  early  commercialization  efforts.  We  expect  to  sequence
approximately 10,000 to 20,000 additional individuals with obesity over the next few years with the goal to
rapidly increase testing beyond those numbers in subsequent years.

● Lifecyle Management: As we make IMCIVREE available in our initial indications and build out our clinical
development  programs,  we  also  are  focused  on  developing  and  bringing  follow-on  product  candidates  to
market,  including  a  weekly  formulation  of  setmelanotide  as  well  as  an  auto-injector,  designed  to  be  more
convenient  and  patient-friendly.  Additionally,  we  have  initiated  a  clinical  trial  in  pediatric  patients  from  2
years to younger than 6 years of age with obesity due to POMC, PCSK1 or LEPR deficiency, or BBS, as we
know early-onset obesity manifests in this young age group. We also are exploring more selective and more
potent MC4R agonists through preclinical development of our library of MC4R agonist candidates.

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Our Product Pipeline

The  following  chart  depicts  key  information  regarding  the  development  of  setmelanotide,  including  the

indications we are pursuing within MC4R pathway deficiencies and the current state of development:

Market Overview

Early-onset, Severe Obesity, Hyperphagia, and the MC4R Pathway

All obesity is not the same, and rare genetic diseases of obesity are distinct from general obesity. The hallmark
characteristics  of  rare  genetic  diseases  of  obesity  are  early-onset,  severe  obesity  and  hyperphagia,  a  pathological,
overwhelming,  obsessive,  and  relentless  hunger  that  drives  a  severe  preoccupation  with  food  and  extreme  food-seeking
behaviors. Lifestyle interventions are not therapeutic in patients with rare genetic diseases of obesity, because they fail to
address the underlying genetic impairment of central energy regulation.

Accordingly, the discovery that the MC4R pathway regulates both energy intake (hunger) and energy expenditure
to balance food intake and caloric expenditure has made it an important target for therapeutics. In addition to obesity due to
POMC, PCSK1 or LEPR deficiencies, recent advances in genetic studies have identified several diseases characterized at
least  in  part  with  early-onset,  severe  obesity  and  hyperphagia  that  are  the  result  of  genetic  variants  affecting  the  MC4R
pathway, including BBS, Alström syndrome, certain variants of the POMC, PCSK1, LEPR, SRC1 and SH2B1 genes, as
well as MC4R deficiency obesity and deficiencies in upwards of 31 additional genes with strong or very strong relevance
to the MC4R pathway. With a deeper understanding of this critical signaling pathway, we are taking a different approach to
drug development by focusing on specific genetic variants affecting the MC4R pathway. We believe that this approach has
the  potential  to  provide  dramatic  improvements  in  obesity  and  hyperphagia  by  restoring  lost  function  in  the  MC4R
pathway.

Obesity Caused by Rare Genetic Variants Affecting the MC4R Pathway

The  MC4R  pathway,  which  has  been  the  focus  of  extensive  scientific  investigation  for  many  years,  regulates
hunger,  caloric  intake,  and  energy  expenditure,  which  consequently  affect  body  weight.  The  critical  role  of  the  MC4R
pathway in weight regulation is supported by the observation that single gene variants at many points in this pathway result
in early-onset, severe obesity.

The MC4R pathway is illustrated in the figure below. Under normal conditions, POMC neurons are activated by

adiposity and satiety signals, including those resulting from the hormone leptin acting through the LEPR. POMC neurons

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produce a protein, which is processed by the PCSK1 enzyme, into melanocyte stimulating hormone, or MSH, the natural
ligand, or activator of the MC4R. When upstream genetic variants disrupt this pathway, it can lead to insufficient MC4R
activation and downstream signaling; the result of which is hyperphagia and severe obesity.

The figure below also illustrates some of the genes that are upstream of the MC4R and the potential effect variants

in those genes may have on the activation of the MC4R, which regulates food intake and energy expenditure.

Setmelanotide Development Targets: Upstream Deficiencies Affecting the MC4R Pathway

AgRP, agouti-related protein; LEPR, leptin receptor; MC4R, melanocortin-4 receptor; MSH, melanocyte-stimulating hormone; ACTH,
adrenocorticotropic hormone; PCSK1, proprotein convertase subtilisin/kexin-type 1; POMC, proopiomelanocortin; . Reference: Yazdi FT et al. PeerJ.
2015;3:e856.

We are focused on developing setmelanotide for genetic disorders that arise due to variants in this pathway that
are upstream of the MC4R. With our expanding clinical development program, we are evaluating setmelanotide in Phase 2
and  3  trials  for  the  treatment  of  obesity  due  to  variants  in  one  of  36  genes  associated  with  the  MC4R  pathway.
Setmelanotide has the potential to restore lost function in this pathway by activating the intact MC4R-expressing neuron
downstream  of  the  genetic  impairment.  In  this  way,  we  believe  setmelanotide  acts  as  restorative  therapy,  to  restore  lost
signaling of the MC4R pathway.

Epidemiology Estimates of Rare Genetic Diseases of the MC4R Pathway

While obesity is epidemic in the United States and elsewhere, we are focused on rare genetic diseases of obesity,
most often characterized by early-onset, severe obesity and hyperphagia. Of the tens of millions of individuals with obesity
in  the  United  States,  the  U.S.  Center  for  Disease  Control  (CDC)  estimates  that  there  are  approximately  5  million
individuals whose severe obesity had early onset between the ages of 2 and 5 years old. The table below summarizes, using
the estimations described below, the indications currently approved or under active clinical investigation.

Approved by the U.S. FDA and authorized by the EC and Great Britain’s MHRA1

Obesity due to biallelic POMC or PCSK1 deficiency
Obesity due to biallelic LEPR deficiency

~100 – 500 U.S. patients
~500 – 2,000 U.S. patients

Under review by U.S. FDA with PDUFA target date of June 16, 2022, and under review by EU EMA
Bardet-Biedl syndrome
Alström syndrome

~1,500 – 2,500 U.S. patients
~500 U.S. patients

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Setmelanotide currently being evaluated in Phase 2 or Phase 3 trials
Heterozygous POMC or PCSK1 variants
Heterozygous LEPR variants
SRC1 variants
SH2B1 variants
PCSK1 N221D variant
MC4R variants
Hypothalamic obesity

~45,000 U.S. patients
~25,000 U.S. patients
~20,000 U.S. patients
~23,000 U.S. patients
~100,000 U.S. patients
~10,000 U.S. patients*
>4,500 U.S. patients**

1. Approved for use in patients six years of age and older.
These calculations rely on internal and proprietary sequencing data and current estimated responder rates to setmelanotide therapy, and they assume a U.S.
population of 327 million, of which 1.7% have early-onset, severe obesity (Hales et al in JAMA – April 2018: Trends in Obesity and Severe Obesity
Prevalence in US Youth and Adults by Sex and Age, 2007-2008 to 2015-2016); * Estimated prevalence of U.S. patients with rescuable variants of the
MC4R; ** Internal Company estimate is based on reported incidence of hypothalamic obesity following  craniophryngioma and long-term survival rates,
Zacharia,  et  al.,  Neuro-Oncology  14(8):1070–1078,  2012.  doi:10.1093/neuonc/nos142;  and  Muller,  et  al.,  Neuro-Oncology  17(7),  1029–1038,  2015
doi:10.1093/neuonc/nov044.

We  believe  that  the  patient  populations  in  Europe  are  at  least  as  large  as  those  in  the  United  States.  While  our
sequencing data include patients from the United States and Europe, we do not have comparable epidemiological data from
European  countries  and  these  estimates  are  therefore  based  solely  on  applying  relative  population  percentages  to  the
Rhythm-derived estimates described above.

Prevalence  estimates  for  Bardet-Biedl  syndrome  vary  markedly  between  populations,  from  1  in  160,000  in
northern European populations with higher prevalence rates in some additional regions throughout the world. Our estimate
  is  that  the  number  of  patients  with  BBS  in  the  United  States  is  between  1,500  to  2,500  people  and  that  it  is  a  slightly
higher  number  in  Europe.  We  believe  the  BBS  community  in  EU  member  states  and  Great  Britain  is  particularly  well
established and more advanced than in the United States, as we believe there are approximately 1,500 patients diagnosed
and being cared for at academic centers in Europe. Additionally, our genetic sequencing data support our belief that these
prevalence estimates may be lower than the actual disease prevalence.

For patients with genetic variants of the MC4R pathway, the rarity and the genetic pathophysiology of our target
indications means that there is no comprehensive patient registry or other method of establishing with precision the actual
number of patients. As a result, we have had to rely on other available sources to derive clinical prevalence estimates for
our target indications. We recently updated our prevalence estimates in 2021 based on sequencing data from approximately
45,000 individuals with obesity, and rates of response to setmelanotide in our exploratory Phase 2 Basket study. Because
the published epidemiology studies for these genetic deficiencies are based on relatively small population samples, and are
not amenable to robust statistical analyses, it is possible that these projections may significantly under- or overestimate the
addressable  population.  While  our  projected  estimates  of  the  aggregate  total  addressable  population  continues  to  expand
with the addition of new genes, the addressable population faces the challenges of a rare disease population. The disease
must be suspected by the physician, confirmed by genetic testing and then setmelanotide responsiveness confirmed by a
12-16 week trial with the product candidate.

Limitations of Current Therapies

Although drugs approved for general obesity potentially can be used in patients with obesity and MC4R pathway
variants,  all  currently  available  products  have  limited  efficacy  and  treat  symptoms  without  addressing  the  underlying
biology of MC4R impairment. For example, drugs which delay gastric emptying may cause a patient to feel full and eat
less,  but  are  also  often  associated  with  nausea  and  vomiting  as  a  consequence  of  the  delayed  emptying.  In  the  case  of
individuals  with  MC4R  pathway  variants,  these  therapies  also  do  not  specifically  address  the  impaired  signaling  in  this
central energy regulating pathway. Similarly, bariatric surgery which has been shown to be quite effective in the general
population with obesity, may be unsuccessful in patients with MC4R variants for the same reason.

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IMCIVREE™ (setmelanotide)

IMCIVREE  was  approved  in  November  2020  by  the  U.S.  FDA  for  chronic  weight  management  in  adult  and
pediatric patients 6 years of age and older with obesity due to POMC, PCSK1 or LEPR deficiency confirmed by genetic
testing demonstrating variants in POMC, PCSK1, or LEPR genes that are interpreted as pathogenic, likely pathogenic, or
of  uncertain  significance,  and  in  July  and  September  2021,  respectively,  by  the  EC  and  Great  Britain’s  MHRA  for  the
treatment  of  obesity  and  the  control  of  hunger  associated  with  genetically  confirmed  loss-of-function  biallelic  POMC,
including PCSK1, deficiency or biallelic LEPR deficiency in adults and children 6 years of age and above. These approvals
were  based  on  Phase  3  data  demonstrating  a  statistically  significant  and  clinically  meaningful  reductions  in  weight  and
hunger  in  patients  12  years  old  or  older  with  severe  obesity  due  to  POMC,  PCSK1  or  LEPR  deficiency.  As  an  MC4
receptor  agonist,  IMCIVREE  is  designed  to  restore  impaired  MC4  receptor  pathway  activity  arising  due  to  genetic
impairments upstream of the MC4 receptor.

IMCIVREE  contains  setmelanotide  acetate,  a  melanocortin  4  receptor  (MC4R)  agonist.  Setmelanotide  is  an  8
amino  acid  cyclic  peptide  analog  of  endogenous  melanocortin  peptide  α-MSH.  The  chemical  name  for  setmelanotide
acetate 
is  acetyl-L-arginyl-L-cysteinyl-D-alanyl-L-histidinyl-D-phenylalanyl-L-arginyl-L-tryptophanyl-L-cysteinamide
cyclic (2→8)-disulfide acetate. Its molecular formula is C49H68N18O9S2 (anhydrous, free-base), and molecular mass is
1117.3 Daltons (anhydrous, free-base).

The chemical structure of setmelanotide is:

IMCIVREE injection is a sterile, clear to slightly opalescent, colorless to slightly yellow solution. Each 1 mL of
IMCIVREE  contains  10  mg  of  setmelanotide  provided  as  setmelanotide  acetate,  which  is  a  salt  with  2  to  4  molar
equivalents of acetate, and the following inactive ingredients: 100 mg N-(carbonyl-methoxypolyethylene glycol 2000)-1,2-
distearoyl- glycero-3- phosphoethanolamine sodium salt, 8 mg carboxymethylcellulose sodium (average MWt 90,500), 11
mg mannitol, 5 mg phenol, 10 mg benzyl alcohol, 1 mg edetate disodium dihydrate, and Water for Injection. The pH of
IMCIVREE is 5 to 6.

Obesity due to POMC, PCSK1 or LEPR deficiency are ultra-rare diseases caused by variants in POMC, PCSK1 or
LEPR genes that impair the MC4 receptor pathway. People living with obesity due to POMC, PCSK1 or LEPR deficiency
struggle  with  hyperphagia,  an  extreme,  insatiable  hunger,  beginning  at  a  young  age  and  resulting  in  early-onset,  severe
obesity.

Obesity  due  to  POMC  or  PCSK1  deficiency  is  caused  by  the  loss  of  both  genetic  copies  of  either  the  gene  for
POMC  or  the  gene  for  PCSK1.  This  results  either  in  loss  of  POMC  neuropeptide  synthesis,  in  the  case  of  biallelic
(compound heterozygous and homozygous) deficiency in the POMC gene, or in disruption of the required processing of
the POMC neuropeptide product to MSH by the PCSK1 enzyme, in the case of biallelic deficiency in the PCSK1 gene. The
result of both of these biallelic genetic variants is deficiency of MSH to bind and activate MC4R, ultimately leading to the
lack  of  stimulation  of  downstream  MC4R  neurons  and  causing  severe,  early-onset  obesity  and  hyperphagia.  POMC  or
PSCK1 biallelic deficiency may also be associated with other hormonal deficiencies, such as hypoadrenalism, as well as
other characteristics of MSH deficiency such as red hair and fair skin.

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POMC/PCSK1 deficiency is characterized by voracious infant feeding, rapid weight gain and severe obesity, often
in  early  infancy,  with  patients  demonstrating  remarkable  weight  increases  many  standard  deviations  above  the  normal
weight  growth  curves.  These  patients  and  their  caregivers  often  attempt  to  stabilize  body  weight  with  the  help  of
psychologists, nutritionists and pediatric endocrinologists, all without significant success, since none of these interventions
addresses the underlying biology of the impact of the POMC/PSCK1 deficiency on the MC4R pathway.

Obesity due to LEPR deficiency is an ultra-rare genetic disease that causes hyperphagia and severe, early-onset
obesity.  Leptin’s  role  in  obesity  has  been  elucidated  by  characterization  of  people  with  severe  obesity  and  biallelic
mutations  that  impair  the  activity  of  leptin,  including  disruption  of  signaling  at  the  LEPR,  known  as  LEPR  deficiency
obesity. Under normal conditions, leptin is released from adipose (fat) tissue as a signal of the body’s energy reserves, and
can  activate  POMC  neurons  and  the  downstream  MC4R  to  signal  for  decreased  energy  intake  and  increased  energy
expenditure.  However, like other deficiencies upstream in the MC4R pathway, lack of signaling at LEPR results in loss of
function in the MC4R pathway and loss of signaling of downstream MC4R expressing neurons, resulting in hyperphagia
and early-onset severe obesity.

Pivotal Phase 3 Clinical Trials Evaluating Setmelanotide in POMC and LEPR Deficiency Obesities

We assessed the safety and efficacy of IMCIVREE in two pivotal trials that were identically designed: one-year,
open-label  studies,  each  with  an  eight-week,  double-blind  withdrawal  period.  The  studies  enrolled  patients  with
homozygous or presumed compound heterozygous pathogenic, likely pathogenic variants, or VUS, for either the POMC,
PCSK1  or  LEPR  gene.  In  both  studies,  adult  patients  had  a  body  mass  index  (BMI)  of  ≥30  kg/m2.  Weight  in  pediatric
patients was ≥95th percentile using growth chart assessments.

Efficacy analyses were conducted in 21 patients who had completed at least one year of treatment at the time of a
pre-specified data cutoff. Of the 21 patients included in the efficacy analysis in both pivotal studies, 62% were adults and
38% were aged 16 years or younger. In Study 1, 50% of patients were female, 70% were White, and the median baseline
BMI  was  40.0  kg/m2  (range:  26.6-53.3).  In  Study  2,  73%  of  patients  were  female,  91%  were  White,  and  the  median
baseline BMI was 46.6 kg/ m2 (range: 35.8-64.6).

In  the  POMC/PCSK1  study,  80%  of  patients  with  obesity  due  to  POMC  or  PCSK1  deficiency  met  the  primary
endpoint, achieving a ≥10% weight loss after one year of treatment with IMCIVREE. In the LEPR study, 46% of patients
with obesity due to LEPR deficiency met the primary endpoint by achieving a ≥10% weight loss after 1 year of treatment
with IMCIVREE.

Development of Setmelanotide for Additional Indications

Bardet-Biedl and Alström syndromes

Bardet-Biedl  syndrome  (BBS)  is  a  life-threatening,  ultra-rare  orphan  disease.  BBS  is  a  disease  that  causes
hyperphagia and severe obesity beginning in early childhood, as well as vision loss, polydactyly, kidney abnormalities, and
other signs and symptoms. For patients with BBS, hyperphagia and obesity can have significant health consequences. BBS
is part of a class of disorders called ciliopathies, or disorders associated with the impairment of cilia function in cells. Cilia
are  hair-like  cellular  projections  that  play  a  fundamental  role  in  the  regulation  of  several  biological  processes,  including
satiety  signaling.  Cilia  dysfunction  in  the  hypothalamus,  including  in  the  MC4R  pathway,  is  thought  to  contribute  to
hyperphagia  and  obesity  in  BBS.  BBS  is  a  genetically  heterogeneous  disease  that  is  caused  by  as  many  as  21  separate
Bardet-Biedl  loci  variants  that  result  in  a  similar  syndrome  of  clinical  manifestations.  Recent  scientific  studies  identify
deficiencies  affecting  the  MC4R  pathway  as  a  potential  cause  of  the  hyperphagia  and  obesity  associated  with  BBS,  and
demonstrate  that  an  MC4R  agonist  can  directly  impact  these  symptoms.  Currently  there  are  no  approved  or  effective
therapies for BBS.

Alström  syndrome  is  a  life-threatening,  ultra-rare  orphan  disease.  It  is  a  monogenic  disorder  that  causes
hyperphagia and obesity beginning in early childhood, as well as progressive vision loss, deafness, cardiomegaly, insulin
resistance  and  other  signs  and  symptoms.  Variable  features  include  short  stature,  cardiomyopathy,  and  progressive  lung,
liver, and kidney dysfunction. Symptoms of Alström syndrome first appear in infancy, and progressive development of

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multi-organ  pathology  leads  to  a  reduced  life  expectancy,  with  survival  rare  beyond  the  age  of  50.  Alström  syndrome
shares many clinical features with BBS, including hyperphagia and obesity, and is also characterized by progressive vision
loss, deafness, congestive heart failure, hyperinsulinemia and type 2 diabetes mellitus. Similarly, Alström syndrome is a
ciliopathy  caused  by  mutations  in  the  ALMS1  gene,  which  has  also  been  shown  to  be  important  for  cilia  function.  Like
BBS, recent scientific studies identify genetic deficiencies affecting the MC4R signaling pathway as a potential cause of
the hyperphagia and obesity associated with Alström syndrome. While Alström syndrome is less well studied than BBS,
the similar pathophysiology of cilia dysfunction and clinical presentation support our belief that deficiencies in the MC4R
pathway  are  implicated  in  the  hyperphagia  and  obesity  observed  in  Alström  syndrome.  Therefore,  we  hypothesize  that
setmelanotide treatment can be applied to treat Alström syndrome.

In September 2021, we submitted an sNDA to the FDA for setmelanotide for the treatment of obesity and control
of hunger in adult and pediatric patients 6 years of age and older with BBS or Alström syndrome, and in October 2021, we
submitted a Type II variation application to the EMA for the same indications and patient populations. These submissions
were  based  on  based  on  data  from  our  pivotal  Phase  3  clinical  trial  of  setmelanotide  in  patients  with  BBS  or  Alström
syndrome. As we first reported in December 2020, the trial met its primary endpoint and all key secondary endpoints, with
statistically significant and clinically meaningful reductions in weight and hunger at 52 weeks on therapy. All patients who
met the primary endpoint, defined as at least 10 % weight loss, had BBS and none had Alström syndrome. However, data
from this Phase 3 trial are supported by results from the Phase 2 trial, which suggested that treatment with setmelanotide
may  result  in  decreased  weight  and  hunger  in  patients  with  Alström  syndrome.  In  addition,  data  from  a  predefined
exploratory  endpoint  showed  that  in  patients  with  BBS  or  Alström  syndrome  who  were  younger  than  18  years  old  and
likely  still  growing  in  height,  setmelanotide  treatment  was  associated  with  clinically  meaningful  reductions  in  BMI  Z
scores. The BMI Z score, or BMI standard deviation score, represents the number of standard deviations from median BMI
by child’s age and sex, and represents a unit of measure that accounts for height as well as weight in growing children and
adolescents. Based on our discussion with the FDA and the EMA, we believe the decision or decisions to approve and/or
authorize setmelanotide for BBS and Alström would be made independently, and recently we have decided to withdraw the
Alström  syndrome  indication  from  the  pending  Type  II  variation  application  based  on  feedback  from  the  EMA.  In
November 2021, we announced that the FDA accepted for filing our sNDA with Priority Review and assigned a PDUFA
goal date of June 16, 2022 for our sNDA.

Based on the data included in our regulatory applications, we believe setmelanotide has the potential to address
the  early-onset,  severe  obesity  and  hyperphagia  that  characterize  these  diseases.  In  addition  to  the  topline  data  reported
from our Phase 3 trial of setmelanotide in patients with BBS or Alström syndrome, we have also presented several poster
and oral presentations featuring the topline data from the pivotal cohort as well as additional updated data also including
the supplemental cohort at medical meetings during 2021. Our pivotal, Phase 3 trial that combined both BBS and Alström
syndrome  was  a  multinational,  open-label,  single-arm  study  consisting  of  52  weeks  of  treatment  with  setmelanotide.
Participants  were  blinded  and  randomized  for  the  first  14  weeks  of  the  trial  to  receive  either  placebo  or  setmelanotide
therapy. Those participants who began the trial on setmelanotide continued therapy for a total of 52 weeks, while those on
placebo went on to receive 52 weeks of setmelanotide therapy after completion of the 14-week placebo period. All patients
had obesity, defined as BMI equal to or greater than 30 kg/m2 for patients aged 16 years or older or weight greater than
97th percentile for age and sex on growth chart assessment for patients 6 to 15 years of age. The primary endpoint was the
proportion of participants (aged 12 years or older) who achieved at least 10 % reduction in body weight from baseline after
52 weeks of setmelanotide treatment. Key secondary endpoints further assessed changes in body weight and hunger, and
daily  maximal  hunger  score  was  based  on  participant  responses  to  scoring  their  “most”  hunger  during  the  day  using  a
numerical rating scale ranging from 0 to 10, where 0 is not hungry at all and 10 is the hungriest possible. Recognizing that
adolescents normally gain height and weight, an analysis was performed to assess changes in BMI Z scores in participants
with BBS who were younger than 18. This trial enrolled 38 participants, of which 32 were confirmed to have BBS and 6
were confirmed to have Alström syndrome. Five study participants who were under 12 years old and two participants who
were equal to or more than 12 years old and who discontinued before receiving active therapy were not included in the
primary analysis.

In this Phase 3 trial in participants with BBS or Alström syndrome, setmelanotide was associated with significant

and clinically meaningful reductions in body weight and hunger, with outcomes driven by responses in individuals with

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BBS. Overall, this study met its primary and key secondary efficacy endpoints demonstrating that approximately 52 weeks
of treatment with setmelanotide produced:

● A  statistically  significant  proportion  of  patients  who  achieved  at  least  10%  reduction  in  body  weight  over

approximately 52 weeks of treatment;

● Statistically  significant  and  clinically  meaningful  reductions  in  mean  body  weight  over  approximately  52

weeks of treatment;

● Statistically significant and clinically meaningful reductions in the mean weekly average of the Daily Hunger
Questionnaire  over  approximately  52  weeks  of  treatment,  whether  analyzed  by  most/worst  score  over  24
hours, average score over 24 hours, or morning hunger score; and

● A statistically significant proportion of patients who achieved an equal to or greater than 25% improvement
in  the  weekly  average  of  the  Daily  Hunger  score  over  approximately  52  weeks,  whether  analyzed  by
most/worst score over 24 hours, average score over 24 hours, or morning hunger score.

In the primary analysis, a total of 28 patients who had BBS were older than 12 years, 15 were adults and 13 were
adolescents between the ages of 12 and 18. As presented at The Endocrine Society Annual Meeting in March 2021, data
after approximately 52 weeks of treatment with setmelanotide demonstrated:

● Of the 15 adult patients with BBS:

o
o
o

there was a -9.1% mean percentage change from baseline in BMI;
46.7%, or seven adults, achieved at least 10% weight reduction from baseline; and
60%, or nine adults, achieved at least 5% weight reduction from baseline;

● Of the 14 patients who were younger than 18 years old:

o
o
o

there was a -9.5% mean percentage change from baseline in BMI;
85.7%, or 12 adolescents, had a reduction from baseline in BMI Z of greater than 0.2; and
there was a -0.75 point mean change from baseline in BMI Z score.

We also presented the 14-week, placebo-controlled data from this trial at the 59th Annual European Society for
Paediatric Endocrinology (ESPE) Meeting in September 2021. Patients with BBS treated with setmelanotide achieved an
average  BMI  reduction  of  −1.5  kg/m2  (or  a  decrease  of  3.8%)  at  Week  14  compared  with  patients  on  placebo  who  had
negligible  change  from  baseline  (P<0.05).  Treatment  with  setmelanotide  during  that  14-week  period  also  significantly
reduced the Daily Hunger Questionnaire’s Most/Worst Hunger score compared to placebo in patients in the pivotal cohort
aged  12  years  or  older,  with  directionally  consistent  results  observed  when  the  analysis  was  repeated  using  all  patients
(from the pivotal and supplemental cohorts).

In November 2021, we presented the first-ever data on the health-related quality of life (HRQOL) and experience
of patients with BBS at The Obesity Society’s ObesityWeek®. This research was conducted as a post-hoc analysis of data
from our Phase 3 study, using the self-reported Pediatric Quality of Life Inventory (PedsQL) or the Impact of Weight on
Quality of Life Questionnaire-Lite (IWQOL-Lite), both of which are 100-point scales, with zero being the worst and 100
being the best. Key findings include:

● 85%  of  patients  reported  clinically  meaningful  improvements  in  their  HRQOL  status  after  one  year  of

setmelanotide therapy, or preserved their non-impaired HRQOL status;

● In adult patients, changes in their IWQOL score were clinically meaningful with a mean increase of 12 points

after one year on setmelanotide therapy from 74.9 at baseline;

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● In pediatric patients, changes in their PedsQL score were clinically meaningful with a mean increase of 11.2

after one year on setmelanotide therapy from 67.2 at baseline;

● For  the  subset  of  patients  without  cognitive  impairment,  clinically  meaningful  improvements  in  outcomes

such as body mass index and hunger mirrored their improvements in HRQOL;

● HRQOL improvements were sustained over the 52-week trial period.

On  February  16,  2022,  we  announced  positive  interim  data  from  our  long-term  extension  study  evaluating
setmelanotide in patients with BBS. Of the patients enrolled in our long-term extension trial, 19 individuals with BBS had
reached 24 months on therapy. As of a data cutoff date of October 29, 2021:

• The mean percent reduction in BMI from pivotal trial baseline was -14.3% (n=19);

• The mean percent reduction in body weight from pivotal trial baseline among patients 18 years of age or older

was -14.9% (n=6);

• The  mean  reduction  in  BMI  Z  score  from  pivotal  trial  baseline  among  patients  younger  than  18  was  -0.72
(n=12). For one patient who was 17 years old when enrolled and at baseline in the pivotal trial, BMI Z score could not be
calculated as this patient was 20 years old at 24 months on therapy.

Overall, 34 patients with BBS transitioned from our phase 3 pivotal trial into our long-term extension study. We
anticipate reporting updated data from this trial at a medical meeting in the spring of 2022. Consistent with prior clinical
observations, setmelanotide was generally well-tolerated in the long-term extension study and no new safety signals were
observed.

We  studied  patients  with  Alström  syndrome  and  severe  obesity  in  two  clinical  trials,  our  exploratory  Phase  2
Basket study and our pivotal Phase 3 study in conjunction with BBS. As stated above, our Phase 3 study included three
patients with Alström syndrome in the primary analysis and none of them met the primary endpoint of equal to or greater
than 10 % weight loss. However, there were signals of potential efficacy in some patients, and based on those signals and
data  from  the  Phase  2  Basket  study,  we  believe  setmelanotide  has  the  potential  to  address  the  unmet  medical  need  in
patients with Alström syndrome, hyperphagia and severe obesity.

A  total  of  12  patients  with  Alström  syndrome  entered  these  trials,  with  eight  of  them  having  been  exposed  to
setmelanotide for at least 26 weeks, and overall patients had setmelanotide exposure up to 79 weeks. As the majority (67%)
of  patients  were  less  than  18  years  of  age  and  still  growing  in  height,  we  believe  changes  in  BMI  Z  scores  are  a  more
appropriate  measure  of  setmelanotide’s  potential  effects  than  change  in  body  weight.  Reductions  in  BMI  Z  scores  were
observed in 5 of the 6 patients (or 83%) under the age of 18 years who had at least 26 weeks of exposure to setmelanotide,
with robust clinically meaningful reductions greater than 0.3 points observed in 3 of these patients. Clinically meaningful
reductions  in  body  weight  (equal  to  or  greater  than  5%)  were  observed  in  2  of  the  8  (or  25%)  patients  with  Alström
syndrome  with  at  least  26  weeks  on  setmelanotide,  with  one  12-year-old  patient  losing  more  than  20%  of  initial  body
weight  at  baseline.  With  respect  to  hunger,  4  of  the  6  (or  66.7%)  patients  with  evaluable  data  demonstrated  clinically
meaningful  reductions  of  1  to  2  points  in  hunger,  as  measured  by  the  most/worst  hunger  question  of  the  Daily  Hunger
Questionnaire. Five of the eight patients with Alström syndrome treated for at least 26 weeks decided to continue treatment
with setmelanotide in our ongoing extension study.

In addition to positive results from our pivotal Phase 3 clinical trial, we included in our regulatory submissions a
series of comprehensive individual patient narratives supporting our belief that setmelanotide, has the potential to address
the hyperphagia and early-onset, severe obesity that characterize these syndromes.

Additional MC4R Pathway Genetic Variants

With  significant  advances  in  gene  sequencing  and  analysis,  we  have  deepened  our  understanding  of  the

relationship between genetics and severe obesity. We also are advancing a broad clinical development program evaluating

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setmelanotide  in  several  ongoing  and  planned  clinical  trials,  and  we  are  leveraging  the  largest  known  DNA  database
focused on obesity - with approximately 45,000 sequencing samples as of December 2021 - to improve the understanding,
diagnosis and care of people living with severe obesity due to certain variants in genes associated with the MC4R pathway.
There remains a significant unmet need with no effective therapeutic options for patients with these rare genetic diseases of
obesity, and we believe setmelanotide has the potential to address the hyperphagia and severe obesity associated with these
rare genetic diseases.  

Having achieved proof-of-concept in our ongoing exploratory Phase 2 Basket Study evaluating setmelanotide in
patients with severe obesity driven by variants in several different MC4R pathway associated genes, we expect to initiate in
the  first  half  of  2022,  the  pivotal  Phase  3  EMANATE  clinical  trial  to  evaluate  setmelanotide  in  five  independent  sub-
studies in patients with variants in one of five specific genes within the MC4R pathway. In addition to EMANATE, we also
initiated the Phase 2 DAYBREAK clinical trial to evaluate setmelanotide in patients who carry a confirmed variant in one
or more of 31 genes with strong or very strong relevance to the MC4R pathway. Additionally, in our ongoing exploratory
Phase 2 Basket Study, we are evaluating setmelanotide in patients with obesity arising due to heterozygote loss of function
mutations in the MC4R gene itself. We also have a separate trial evaluating setmelanotide in patients with hypothalamic
obesity, or HO, a severe obesity that arises after injury to the hypothalamus (such as from a tumor or the treatment of a
tumor in this location). We anticipate reporting data from both of these Phase 2 studies in the first half of 2022.

Phase 3 EMANATE Trial

In the first half of 2022, we expect to initiate our pivotal Phase 3 EMANATE clinical trial, a randomized, double-
blind, placebo-controlled trial, designed to evaluate setmelanotide in five independent sub-studies in patients with obesity
due to: a heterozygous variant of the POMC/PCSK1 genes or LEPR gene, certain variants of the SRC1 gene or the SH2B1
gene, or PCSK1 N221D deletions within the MC4R pathway. The epidemiology estimates for the indications being studied
in  our  Phase  3  EMANATE  trial  suggest  that  between  100,000  to  200,000  U.S.  patients  with  one  of  these  genetic
deficiencies have the potential to respond to setmelanotide.

POMC, PCSK1 and LEPR are core genes of the MC4R pathway. Heterozygous variants in POMC, PCSK1 and
LEPR  have  been  associated  with  clinical  obesity  that  may  be  due  to  a  MC4R  pathway  dysfunction.  Obesity  due  to  rare
variants  in  the  SRC1  gene  is  an  autosomal  dominant  disorder  that  is  characterized  by  early-onset  severe  obesity  and
hyperphagia,  as  SRC1  variants  found  in  individuals  with  severe  obesity  significantly  impaired  leptin-induced  POMC
expression  (Yang  et  al  2019,  Nat  Comm.  10,  Article  1718).    Specifically,  SRC1  is  a  transcriptional  coactivator  that  has
links to both the leptin receptor and to POMC. When the leptin receptor is activated, SRC1 is activated through a cascade
of events that then drives the expression of POMC. Individuals who have heterozygous loss-of-function variants in their
SRC1  genes  can  have  insufficient  leptin  receptor  activation  of  the  MC4R  pathway  as  a  result  of  decreased  POMC
expression. This decreases the amount of available MSH to activate the MC4R, consequently resulting in hyperphagia and
obesity in these individuals. Obesity due to variants in the SHWB1 gene is a rare genetic disease that is characterized by
early-onset  severe  obesity,  hyperphagia,  hyperinsulinemia,  and  reduced  final  height.  SH2B1  variants  can  arise  through
either DNA variants in the SH2B1 gene or through chromosomal deletions (chromosome 16) that encompass the SH2B1
gene.  In  both  cases,  dysfunction/loss  of  only  one  copy  of  the  SH2B1  gene  is  sufficient  to  give  rise  to  obesity  and
hyperphagia.  The  SH2B1  protein  has  been  shown  to  have  direct  links  to  the  MC4R-pathway.  Specifically,  SH2B1  is  an
adapter protein that amplifies the signal coming through the leptin receptor. In individuals who carry heterozygote loss of
function mutations in SH2B1 or a chromosomal deletion that remove the SH2B1 from the chromosome, individuals may
have insufficient leptin receptor activity activation of their MC4R pathway. This gives rise to a well-documented form of
severe early-onset obesity and hyperphagia.

Proof of concept achieved in exploratory Phase 2 Basket Study

In  January  2021,  we  announced  proof-of-concept  data  from  our  exploratory  Phase  2  Basket  Study  in  multiple
patient cohorts of patients with severe obesity due to a variant in one of the two alleles in the POMC, PCSK1, or LEPR
genes (PPL HET obesity), as well as the SRC1 and SH2B1 genes. We provided subsequently furnished updated data in
multiple  presentations  at  medical  meetings  throughout  2021.  The  ongoing  Phase  2  Basket  Study  is  an  open  label  study
designed to evaluate setmelanotide in patients with obesity defined as Body Mass Index (BMI) ≥ 30 kg/m2 for patients 16

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years of age or older or BMI≥ 95th percentile for age and gender for patients between 6 and 16 years old. Patients were
stratified by cohort according to their genetic variant. The primary endpoint of the study is the percent of patients in each
subgroup showing at least a 5% loss of body weight over three months (“clinical responders”).

PPL HET Obesity (POMC, LEPR, PCSK1) highlights included:

● Overall,  12  of  35  patients  (34.3%)  achieved  the  primary  endpoint.  This  full  analysis  includes  six  patients

who withdrew early;

● Mean  reduction  from  baseline  in  body  weight  over  three  months  across  all  35  patients  was  -3.7%,  which

includes both clinical responders and non-responders; and

● Among  the  12  patients  who  achieved  the  primary  endpoint  (responder  group),  the  mean  reduction  from

baseline in body weight over three months was -10.1%.

In our analyses, we are applying variant classification guidelines from the American College of Medical Genetics,
or ACMG (as described in Richards, et al., 2015), to patient cohort stratification. Specific variants of the POMC, LEPR,
PCSK1,  SRC1  or  SH2B1  gene  may  be  classified  based  on  published  data  as  being  pathogenic,  likely  pathogenic,  likely
benign or benign, or classified as a variant of unknown significance or VOUS. As genetics of obesity remains an emerging
field, the vast majority of variants in genes associated with the MC4R pathway are classified as VOUS. Our hypothesis
was that patients with genetic variants that indicate a higher degree of pathogenicity would be more likely to have impaired
pathway  signaling  and  therefore  more  likely  to  respond  to  setmelanotide.  In  addition,  we  decided  to  study  a  cohort  of
patients with an N221D variant of the PCSK1 gene. This is a common variant which has been associated with obesity in
scientific and medical literature.

● Patients  with  PPL  HET  obesity  were  stratified  into  three  pre-specified  cohorts  by  classification  of  their

genetic variants according to ACMG guidelines;

● Four  of  eight  patients  (50.0%)  with  a  pathogenic  or  likely  pathogenic  variant  achieved  greater  than  5%

weight loss over three months;

● Four of eight patients (50.0%) with the N221D variant of the PCSK1 gene achieved greater than 5% weight

loss over three months; and

● Four of 19 patients (21.1%) with a variant of unknown significance (VUS) achieved greater than 5% weight

loss over three months.

In  September  2021,  we  presented  updated  interim  data  from  the  SRC1  and  SH2B1  cohorts  at  the  at  the  59th
Annual  European  Society  for  Paediatric  Endocrinology  (ESPE)  Meeting.  The  data  presented  were  based  on  an  interim
analysis of patients who completed 12 weeks of therapy. These presentations included analyses that showed setmelanotide
achieved clinically meaningful weight loss or BMI Z reduction in 30% (9 of 30) of study participants with obesity due to
variants  of  the  SRC1  gene  and  clinically  meaningful  weight  loss  or  BMI  Z  reduction  in  43%  (15  of  35)  of  study
participants with obesity due to variants of the SH2B1 gene, including 16p11.2 chromosomal deletions.

Specifically in the SRC1 cohort, a total of 30 patients with obesity and deficiency in the SRC1 gene were enrolled
in the full analysis set of this study. These patients had a mean BMI of 45.4 kg/m2 or BMI Z of 3.0 at baseline. Highlights
of these data, as of a cut-off date of March 16, 2021, include:

● Nine of 30 (or 30%) of patients achieved a clinically meaningful response to setmelanotide at three months,
as defined by weight loss of 5% or greater from baseline, or for patients under 18 years old, a reduction of at
least 0.15 in BMI Z score:

o

In  adult  patients  18  years  or  older,  six  of  20  (or  30%)  achieved  5%  or  greater  weight  loss  at  three
months;

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o

In patients younger than 18 years, three of 10 (or 30%) achieved a BMI Z reduction of 0.15% or more at
three months.

● Across all enrolled patients, the mean overall weight loss from baseline to three months among patients 18
years  and  older  (a  sample  of  20)  was  -4.0%  (a  standard  deviation  of  3.3%),  and  the  mean  overall  BMI  Z
score  reduction  from  baseline  to  three  months  among  patients  younger  than  18  years  (n=10)  was  -0.21  (a
standard deviation of 0.23).

In  addition,  these  interim  data  showed  a  clear  separation  between  patients  who  responded  to  setmelanotide

treatment at three months and those who did not:

● The mean body weight reduction for adult patients who responded (n= 6) was 7.9% (90% confidence interval
(CI), −9.7 to −6.0), as compared to 2.3% (90% CI, −3.2 to −1.4) for adult patients who did not respond (a
sample of 14);

● The  mean  BMI  Z  reduction  for  patients  younger  than  18  years  who  responded  (n=  3)  was  0.48  (90%  CI,

−0.95 to −0.01), as compared to 0.09 (90% CI, −0.11 to −0.07) for those who did not respond (n= 7).

In the SH2B1 cohort, a total of 35 patients with obesity and 16p11.2 deletions that include the SH2B1 gene or
deficiency in the SH2B1 gene were enrolled in the full analysis set of this study. These patients had a mean BMI of 47.2
kg/m2 or BMI Z of 3.6 at baseline. Highlights of these interim data, as of a cut-off date of March 16, 2021, include:

● Fifteen  of  35  (or  42.9%)  of  patients  achieved  a  clinically  meaningful  response  to  setmelanotide  at  three
months,  as  defined  by  weight  loss  of  5%  or  greater  from  baseline,  or  for  patients  under  18  years  old,  a
reduction of at least 0.15 in BMI Z score:

o
o

In patients 18 or older, eight of 22 (or 36.4%) achieved 5% or greater weight loss at three months;
In patients younger than 18 years, seven of 13 (or 53.8%) achieved a BMI Z reduction of 0.15% or more
at three months.

Across all enrolled patients, the mean overall weight loss from baseline to three months among patients 18 years
and older (n= 22) was -3.1% (a standard deviation of 3.9%), and the mean overall BMI Z score reduction from baseline to
three  months  among  patients  younger  than  18  years  (n=  13)  was  -0.15  (a  standard  deviation  of  0.13).  In  addition,  the
interim data showed a clear separation between patients who responded to setmelanotide treatment at three months and
those who did not:

● The mean body weight reduction for adult patients who responded (n= 8) was 7.2% (90% CI, −8.6 to −5.8),

as compared to 0.8% (90% CI, −1.9 to 0.3) for adult patients who did not respond (n= 14);

● The  mean  BMI  Z  reduction  for  patients  younger  than  18  years  who  responded  (n=  7)  was  0.25  (90%  CI,
−0.29 to −0.21), as compared to 0.03 (90% CI, −0.08 to 0.02) patients younger than 18 years who did not
respond (n= 7).

Consistent with prior clinical experience, setmelanotide was generally well tolerated in each of these rare genetic
diseases of obesity as of the cutoff date. The most common treatment-emergent adverse events, or TEAEs, included mild
injection site reactions, hyperpigmentation, and nausea and vomiting, which occurred early in the treatment course. There
were no SAEs related to treatment with setmelanotide.

MC4 Receptor Deficiency Obesity

In the first half of 2022, we anticipate reporting interim data from ongoing exploratory Phase 2 Basket Study from
a  cohort  of  patients  with  MC4R  deficiency  obesity  arising  due  to  heterozygote  loss  of  function  mutations  in  the  MC4
receptor gene itself. This is one of the most well-known and prevalent forms of monogenic early-onset severe obesity.

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Based  on  a  comprehensive  ongoing  biochemical  screening  study,  we  believe  setmelanotide  may  have  the  potential  to
address MC4R loss of function in a defined subset of this broader population, specifically individuals who carry MC4R
loss of function variants that we believe can be rescued by setmelanotide (e.g. may not responsive to the endogenous ligand
MSH, but would otherwise respond normally to setmelanotide).

Hypothalamic Obesity

Hypothalamic obesity, or HO, is a severe obesity that arises from mechanical hypothalamic injury. Lesions of the
hypothalamus  can  derive  from  various  types  of  tumors  (e.g.,  craniopharyngiomas,  gliomas,  pituitary  adenomas,
hamartomas)  or  may  be  caused  by  surgeries  and/or  radiotherapies  for  the  treatment  of  these  same  tumor  types.  These
hypothalamic lesions, whether caused by the tumor itself and/or the treatment of the tumor, can disrupt the MC4R pathway.
Moreover, patients with HO display high degree of hyperleptinemia and hyperinsulinemia. Alpha-melanocortin stimulating
hormone (MSH) can be detectable in blood, and its levels can change depending on different energy states; however, in
patients with craniopharyngioma or post-surgical treatment for it, α-MSH levels are significantly reduced. Reduced serum
α-MSH levels may suggest melanocortin pathway deficiency, which might explain obesity in these patients.

As of February 1, 2022, we have completed enrollment in our Phase 2, multi-center, open-label, proof-of-concept
study designed to assess the effect of setmelanotide over 16 weeks on weight-related assessments in patients aged 6 to 28
years who are affected by HO. We enrolled more than 15 subjects across 3-5 clinical sites in the United States. The primary
endpoint is the percentage of subjects aged >12 years with ≥5 % body weight loss from baseline to week 16, compared to a
historic control of <5 % in this subject population. All enrolled patients will have obesity, defined as a BMI ≥35 kg/m2 for
subjects ≥16 years of age or BMI ≥99th percentile for age and gender for subjects 6 to <16 years of age based on the U.S.
Centers for Disease Control and Prevention criteria.

We anticipate announcing results from a preliminary data analysis from this trial in the first half of 2022.

Weekly Formulation of Setmelanotide

In  collaboration  with  Camurus  AB,  or  Camurus,  we  have  developed  a  once-weekly,  long-acting  formulation  of
setmelanotide using FluidCrystal® technology. When injected subcutaneously, aqueous body fluid may be absorbed by the
excipient  lipid  phase,  which  may  then  form  a  gel-like  depot  consisting  of  liquid  crystals  formed  in  situ  leading  to  slow
diffusion of setmelanotide from the depot. We believe that this formulation may be more convenient and less burdensome
for patients and their families.

In October 2021, we presented full data from our trial that evaluated the weekly formulation of setmelanotide in
patients  with  obesity  at  the  Obesity  Medicine  Association’s  (OMA)  Overcoming  Obesity  2021  Conference.  The  data
showed that otherwise healthy people with obesity treated with the weekly formulation of setmelanotide (QW) achieved
comparable  weight  loss  to  those  treated  with  the  daily  formulation,  and  that  both  weekly  and  daily  formulations  of
setmelanotide (QD) were observed to be generally well tolerated. A total of 82 individuals aged 18 to 55 years with body
mass index (BMI) ≥35 kg/m2 were included in the data analysis. Based on the data from the study, we concluded the safety
profile  of  QW  setmelanotide  was  similar  to  that  of  the  QD  formulation;  in  healthy  volunteers,  peak  and  trough  QW
setmelanotide  concentrations  were  generally  consistent  with  the  concentrations  of  the  QD  formulation;  and  weight  and
hunger  change  at  Week  12  was  comparable  between  QW  and  QD  setmelanotide.  Notably,  the  weight  and  hunger  score
changes  in  otherwise  healthy  individuals  with  obesity  receiving  both  formulations  were  lower  than  those  reported
separately  in  patients  with  rare  genetic  diseases  of  obesity  associated  with  an  impaired  MC4R  pathway  who  received
setmelanotide. Additionally, pharmacokinetic, or PK, analyses showed similar trough drug concentrations for the daily and
weekly formulations over the duration of therapy. The weekly formulation of setmelanotide demonstrated a consistent 24-
hour  PK  range  and  was  detected  steadily  over  one  week,  with  a  trough  concentration  consistent  with  the  trough
concentration of the daily formulation.

Weekly setmelanotide administration was generally well tolerated, with no serious TEAEs, and the safety results
were similar to the daily administration and consistent with prior clinical experience. The most commonly reported TEAEs,
rates of which were generally similar between individuals treated with the weekly and daily formulations, included

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injection site reaction, hyperpigmentation, nausea, headache and vomiting. Of the 249 reported injection site reactions, 247
(≥99%) were classified as mild.

In December 2021, we initiated a Phase 3 trial to evaluate the weekly formulation of setmelanotide in patients with
rare genetic diseases of obesity. The weekly switch trial is a randomized, double-blind switch trial in patients with obesity
due  to  biallelic  or  heterozygous  POMC,  PCSK1  or  LEPR  deficiency  or  a  clinical  diagnosis  of  BBS  with  genetic
confirmation, who were previously enrolled in our long-term, open-label extension trial. We expect to enroll 30 patients,
randomized  1:1  to  receive  once-weekly  setmelanotide  and  once-daily  placebo,  or  once-daily  setmelanotide  and  once-
weekly  placebo  for  13  weeks.  Following  the  13-week  randomized  treatment  period,  patients  will  crossover  to  an  open-
label,  13-week  study  in  which  all  patients  will  receive  once-weekly  setmelanotide.  The  primary  efficacy  endpoint  is  a
responder  analysis,  based  on  the  proportion  of  patients  with  no  weight  gain  defined  as  a  change  of  5  %  or  less  from
baseline to week 13.

In addition, we plan to initiate a second trial to evaluate the weekly formulation of setmelanotide in the second half
of 2022. This de novo trial will be a randomized, double-blind Phase 3 clinical trial in patients with BBS who live outside
the  United  States.  We  expect  to  enroll  40  patients,  randomized  1:1  to  receive  30  mg  of  setmelanotide  or  placebo  once
weekly  for  18  weeks.  Following  the  18-week  treatment  period,  patients  will  continue  on  treatment,  or  crossover  from
placebo to active therapy, for an additional 14 weeks. The primary efficacy endpoint is the mean change from baseline in
body weight after approximately 18 weeks of once weekly dosing.

Safety and Tolerability Results

Historically,  clinical  data  with  other  MC4R  therapies  suggested  that  MC4R-mediated  side  effects  may  include
changes in blood pressure and heart rate, increased erections in males, changes in libido and sexual function in females,
and nausea and vomiting. As a result, primarily due to concerns about blood pressure and heart rate changes, we are not
aware  of  any  other  MC4R  agonists  are  currently  in  the  clinic  for  the  treatment  of  obesity  and/or  hyperphagia.  It  is
noteworthy  that  the  pattern  of  effects  differed  among  each  of  the  other  MC4R  therapies,  underscoring  the  complex
physiology of MC4R. With setmelanotide, there has been little, if any, evidence of blood pressure or heart rate changes,
preliminarily  supporting  an  important  differentiation  of  setmelanotide  from  previous  MC4R  therapies.  Monitoring  for
blood pressure and heart rate changes, as well as other potential adverse events, or AEs, is included in all setmelanotide
clinical trials.

Because  of  these  first  generation  MC4R  therapy  failures,  the  setmelanotide  program  employed  an  intensive
preclinical  screening  program  to  assess  clinical  candidates  for  blood  pressure  and  heart  rate  effects,  along  with  efficacy.
The  cornerstone  of  this  preclinical  screening  program  was  a  significant  investment  in  obese  primate  studies  which
validated  setmelanotide  as  a  promising  compound  for  clinical  development.  More  recently,  new  research  supporting  a
unique mechanism of action of setmelanotide, compared to earlier MC4R agonists and the endogenous ligand MSH, was
published in May 2018 in Nature Medicine.

Setmelanotide  was  generally  well  tolerated  in  our  Phase  1,  Phase  2  and  Phase  3  clinical  trials  to  date.  Overall,
except as outlined below, the number and patterns of AEs were generally low, and the intensity of the AEs was generally
mild, and infrequently led to clinical trial discontinuation.

In the majority of our trials, we observed a small increase in frequency of penile erections in male patients, as well
as  signs  of  sexual  arousal  in  a  small  number  of  female  patients.  These  symptoms  were  infrequent,  generally  mild,  not
painful,  and  short-lived.  Most  often  these  symptoms  were  reported  in  the  first  week  of  treatment.  There  was  a  small
incidence of nausea and vomiting, as well as injection site reactions, both of which usually were reported as mild, early in
treatment, and short-lived. A small number of patients had dose reductions and/or discontinued treatment due to nausea and
vomiting.

We also noted darkening of skin and skin lesions, such as moles and freckles, in approximately half of the patients
who  received  setmelanotide.  This  was  likely  caused  by  activation  of  the  closely  related  MC1  receptor,  the  receptor  that
mediates skin darkening in response to sun exposure. This was observed generally after one to two weeks of treatment,

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most often plateaued by two to four weeks of treatment, and like sun-related tanning, generally returned to baseline after
cessation of exposure.

Overall, the most common AEs reported among setmelanotide treated patients have been skin hyperpigmentation,

injection site reactions, nausea, headache, vomiting, decreased appetite, and diarrhea.

Life-Cycle Management and Preclinical Development

We continue to advance the development of our once-weekly formulation of setmelanotide for all indications in
which setmelanotide is approved or in development. In addition, we have initiated development of an auto-injector device
designed to make administration of our once-weekly product candidate easier and more convenient for our patients.

IMCIVREE is approved in the United States and authorized in the EU and Great Britain for patients 6 years of age
and older. Rare genetic diseases of obesity often present early in life, and we have identified children with genetic obesity
under  6  years  of  age  who  we  believe  may  potentially  benefit  from  treatment  with  setmelanotide.  In  the  first  quarter  of
2022, we announced initiation of the Phase 3 trial evaluating daily setmelanotide in pediatric patients who are between the
ages of 2 and 6 years old.  The trial is a multi-center, one-year, open-label Phase 3 trial in pediatric patients with obesity
due to biallelic POMC, PCSK1 or LEPR deficiency or a clinical diagnosis of BBS with genetic confirmation. The primary
efficacy endpoint is a responder analysis, based on the proportion of patients who experience a decrease from baseline over
one  year  in  BMI  Z  of  ≥0.2.  In  addition,  we  have  initiated  discussions  with  the  EMA  to  modify  our  EMA-approved
Pediatric Investigation Plan (PIP) to be consistent with our plans for the treatment of these younger patients. We expect to
meet all our PIP requirements by 2024.

We  have  initiated  a  program  to  identify  next  generation  MC4R  agonists  based  on  the  setmelanotide  chemical
space that we believe will have the potential to avoid cardiovascular AEs and MC1R activation, the latter of which results
in hyperpigmentation. This program is expected to result in a clinical development candidate that will be an  MC4R agonist
matching setmelanotide’s cardiovascular safety but without the potential to cause hyperpigmentation. We expect to identify
a lead compound from this program for preclinical development in 2022.

Genetic Sequencing and Patient Finding

We  continue  to  expand  our  sequencing  efforts  in  individuals  living  with  early-onset,  severe  obesity  to  support
research, patient finding and community building efforts in order to better understand rare genetic diseases of obesity. Our
obesity DNA database contains sequencing samples from approximately 45,000 individuals, and we are using these data to
support research, patient finding and community building while forging a better understanding of rare genetic diseases of
obesity.  Our  sequencing  data  has  come  from  four  distinct  sources  in  recent  years:  the  Genetic  Obesity  ID  |  Genotyping
Study,  a  global  network  of  collaborations  with  obesity  researchers  with  individual  sample  collections,  institutional
biobanks and Uncovering Rare Obesity or URO. By bringing additional awareness to these rare genetic diseases of obesity,
our sequencing efforts have the potential to help foster patient communities and drive medical action in these populations.

Uncovering Rare Obesity

Moving forward, we expect that Uncovering Rare Obesity, or URO, our free genetic testing program designed to
help determine if individuals have an underlying genetic cause of their severe obesity, will become the primary driver of
how  we  collect  sequencing  samples  and  identify  patients.  As  severe  obesity  is  epidemic  in  the  United  States,  we  are
focused on identifying people with early-onset obesity that may be caused by certain rare genetic variants. As part of these
efforts,  we  have  launched  Uncovering  Rare  Obesity  in  order  to  increase  access  to  genetic  testing.  As  of  December  31,
2021,  2,758  United  States  health  care  providers  have  requested  28,171  Uncovering  Rare  Obesity  kits,  and  13,029
sequencing tests have been ordered and patient samples collected.

This program complements several initiatives designed to advance the understanding of genetic causes of severe
obesity,  and  Uncovering  Rare  Obesity  broadens  these  efforts  and  brings  access  to  genetic  testing  into  the  community
setting.  Currently  available  physician-ordered  genetic  testing  panels  are  often  cost  prohibitive,  while  many  consumer
genetic tests are incomplete when it comes to genetic disorders of obesity. This makes it difficult to confirm an underlying

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genetic cause of severe obesity. We believe the program marks an important step in the understanding of these disorders
that might help patients and their families find new diagnosis and treatment strategies in the years ahead.

Our  partner  Prevention  Genetics,  a  Clinical  Laboratory  Improvement  Amendments-College  of  American
Pathologists  of  CLIA/CAP-certified  independent  laboratory,  conducts  the  genetic  testing  for  Uncovering  Rare  Obesity.
This program covers the cost of the test and excludes office visit, copay, sample collection, and any other related costs to a
participant.  In  addition,  as  part  of  the  program,  licensed  genetic  counselors  from  PWN  Health,  a  leading  provider  of
professional guidance for diagnostic and genetic testing, are available to advise participating individuals.

Commercial Efforts for IMCIVREE

We are focused on making IMCIVREE available globally. In the United States, we have executed on our strategy
of making IMCIVREE commercially available to patients with obesity due to POMC, PCSK1 or LEPR deficiency, and we
are building out the infrastructure and teams in preparation for a commercial launch for patients with BBS and potentially
Alstrom syndrome, if our sNDA is approved by FDA. We expect IMCIVREE will be commercially available in the key
European markets, UK and Israel in 2022. Although the total number of patients potentially addressable by setmelanotide
may  not  be  so  rare,  individually  populations  with  each  of  these  MC4R  pathway-related  genetic  variants  are  rare  and
affected patients face many of the same challenges as any classically rare patient population. There is little or no awareness
about these rare genetic diseases of obesity, and the patients suffering from them are lost in the health care system, with
limited educational resources and no effective treatments for their condition. All our efforts and services described above
are designed to address the challenges of rare diseases and lay the groundwork for potential future launches, with a focus
on scalability.

We  are  working  with  the  broader  community  of  physicians,  patients  and  families  to  improve  the  path  to  an
accurate  diagnosis  as  we  support  disease  education  through  our  medical  and  commercial  team  efforts.  Additionally,  we
have patient support programs in place to provide support to patients, including genetic counseling, reimbursement support
inclusive of co-pay and patient assistance programs, and IMCIVREE injection training.

The  ongoing  efforts  outlined  to  support  the  POMC,  PCSK1  and  LEPR  launch  lay  the  foundation  for  future
commercialization  efforts,  including  potential  for  BBS  and  Alström  if  setmelanotide  is  ultimately  approved  in  these
indications.  All  disease  education  efforts  supporting  awareness  of  rare  genetic  diseases  of  obesity  and  testing  will  also
uncover BBS and Alström patients. In addition, compared to POMC, PCSK1 and LEPR, BBS and Alström syndrome are
syndromic  diseases  where  patients  suffer  from  multiple  symptoms  beyond  early-onset  obesity  and  hyperphagia.  This
allows  for  a  tailored  approach  to  disease  education  efforts  to  differentiate  individuals  with  BBS  and  Alström  syndrome
from the broader population with obesity.

Following  marketing  authorization  by  both  the  European  Commission  and  Great  Britain’s  MHRA  for  biallelic
POMC, PCSK1 and LEPR deficiency, we are focused on achieving market access and reimbursement for IMCIVREE with
country level authorities.  As of March 1, 2022:

● The German Federal Joint Committee (G-BA) has unanimously voted to exclude IMCIVREE from its lifestyle
exemption list for POMC, PCSK1and LEPR deficiency obesities. In Germany, drugs classified as lifestyle drugs
which  including  those  designed  to  effect  weight  loss,  smoking  cessation  or  hair  loss  are  not  eligible  for
reimbursement.  This  first-ever  exclusion  marks  an  important  recognition  that  IMCIVREE  is  designed  to  treat
rare genetic diseases that manifest as obesity and that this group of diseases is distinct from general obesity. With
this exemption status, IMCIVREE would be eligible for national coverage and reimbursement. We expect first
commercial sales in Germany in the second quarter of 2022.

● The  French  Haute  Autorité  de  Santé  (HAS)  has  granted  paid  early  access  for  IMCIVREE  for  patients  with

POMC, PCSK1 or LEPR deficiency obesity which we expect to commence in the second quarter of 2022.

● We  have  submitted  reimbursement  dossiers  in  seven  countries,  including  France,  Germany,  Italy,  Spain,  the
Netherlands, Israel, and the United Kingdom, with positive feedback from EU payers and favorable HTA ratings
from authorities in several countries.

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We have established initial partnerships in Asia and the Middle East, and we are actively exploring opportunities

to provide setmelanotide to patients in South America.

Competition

The  biotechnology  and  pharmaceutical  industries  are  intensely  competitive  and  subject  to  rapid  and  significant
technological change. We have competitors in a number of jurisdictions, many of which have substantially greater name
recognition,  commercial  infrastructures  and  financial,  technical  and  personnel  resources  than  we  have.  Established
competitors  may  invest  heavily  to  quickly  discover  and  develop  compounds  that  could  make  setmelanotide  obsolete  or
uneconomical. Any new product that competes with an approved product may need to demonstrate compelling advantages
in efficacy, convenience, tolerability and safety to be commercially successful. Other competitive factors, including generic
competition, could force us to lower prices or could result in reduced sales. In addition, new products developed by others
could  emerge  as  competitors  to  setmelanotide.  If  we  are  not  able  to  compete  effectively  against  our  current  and  future
competitors, our business will not grow, and our financial condition and operations will suffer.

Currently,  IMCIVREE  is  the  only  approved  treatment  for  weight  management  in  patients  with  obesity  due  to
POMC, PCSK1 or LEPR deficiencies, and there are no approved treatments for regulating hunger and hyperphagia related
behaviors of patients early-onset, severe obesity and hyperphagia that are the result of genetic variants affecting the MC4R
pathway, including BBS, Alström syndrome, certain variants of the POMC, PCSK1, LEPR, SRC1 and SH2B1 genes, as
well  as  MC4R  deficiency  obesity.    Bariatric  surgery  is  not  an  appropriate  treatment  option  for  these  genetic  diseases  of
obesity  because  the  severe  obesity  and  hyperphagia  associated  with  these  diseases  are  considered  to  be  risk  factors  for
bariatric surgery. Also, existing therapies indicated for general obesity, including glucagon-like peptide-1 (GLP-1) receptor
agonists, such as Wegovy®, and glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1)
agonists,  such  as  tirzepatide  which  is  being  investigated  as  a  treatment  for  obesity,  do  not  specifically  restore  function
impaired by genetic deficiencies in the MC4R pathway, which we believe is the root cause of hyperphagia and obesity in
patients with MC4R genetic variants.  

Licensing Agreements

Ipsen Pharma S.A.S.

Pursuant  to  a  license  agreement  with  Ipsen  Pharma  S.A.S.,  or  Ipsen,  we  have  an  exclusive,  sublicensable,
worldwide  license  to  certain  patents  and  other  intellectual  property  rights  to  research,  develop,  and  commercialize
compounds that were discovered or researched by Ipsen in the course of conducting its MC4R program or that otherwise
were covered by the licensed patents. Rights under the license included the right to research, develop and commercialize
setmelanotide.  Pursuant  to  the  license,  we  have  a  non-exclusive,  sublicensable,  worldwide  license  to  certain  patents  and
other intellectual property rights that were licensed by Ipsen from a third party or that Ipsen may develop in the future to
research, develop, and commercialize any of the compounds exclusively licensed by Ipsen pursuant to the license.

Under the terms of the Ipsen license agreement, Ipsen is eligible to receive payments of up to $40.0 million upon
the  achievement  of  certain  development  and  commercial  milestones  in  connection  with  the  development,  regulatory
approval  and  commercialization  of  applicable  licensed  products,  and  royalties  on  future  sales  of  the  licensed  products.
Substantially all of the aggregate payments under the Ipsen license agreement are for milestones that may be achieved no
earlier  than  first  commercial  sale  of  the  applicable  licensed  product,  and  as  of  December  31,  2021,  we  have  paid  $4.0
million in clinical and regulatory milestones and $5.0 million in commercial milestones. Royalties in the mid-single digits
on future sales of the applicable licensed products will be due under the Ipsen license agreement on a licensed product-by-
licensed product and country-by-country basis until the later of the date when sales of a licensed product in a particular
country are no longer covered by patent rights licensed pursuant to the Ipsen license agreement and the tenth anniversary of
the  date  of  the  first  commercial  sale  of  the  applicable  licensed  product  in  the  applicable  country.  The  term  of  the  Ipsen
license  agreement  continues  until  the  expiration  of  the  applicable  royalty  term  on  a  country-by-country  and  product-by-
product basis. Upon expiration of the term of the agreement, the licensed rights granted to us under the agreement, to the
extent  they  remain  in  effect  at  the  time  of  expiration,  will  thereafter  become  irrevocable,  perpetual  and  fully  paid-up
licenses that survive the expiration of the term. We have a right to terminate the license agreement at any time during the
term for any reason on 180 days’ written notice to Ipsen. Ipsen has a right to terminate the agreement prior to expiration

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of its term for our material breach of the agreement, our failure to initiate or complete development of a licensed product or
our  bringing  an  action  seeking  to  have  an  Ipsen  license  patent  right  declared  invalid.  Upon  any  early  termination  of  the
license agreement not due to Ipsen’s material breach, all licensed rights granted under the license agreement will terminate.

Camurus

In  January  2016,  we  entered  into  a  license  agreement  for  the  use  of  Camurus’  drug  delivery  technology,
FluidCrystal,  to  formulate  setmelanotide  with  Camurus.  Under  the  terms  of  the  agreement,  Camurus  granted  us  a
worldwide  license  to  the  FluidCrystal  technology  to  formulate  setmelanotide  and  to  develop,  manufacture,  and
commercialize this new formulation for once-weekly dosing, administered as a SC injection. The license granted to us is
specific  to  the  FluidCrystal  technology  incorporating  setmelanotide.  Under  the  terms  of  the  license  agreement,  we  are
responsible  for  manufacturing,  development,  and  commercialization  of  the  setmelanotide  FluidCrystal  formulation
worldwide. Camurus received a non-refundable and non-creditable upfront payment of $0.5 million in January 2016, and is
eligible to receive progressive payments of approximately $65.0 million, of which the majority are sales milestones. As of
December  31,  2021,  we  have  made  $1.3  million  of  milestone  payments  to  Camrus.  In  addition,  Camurus  is  eligible  to
receive tiered, mid to mid-high, single-digit royalties on future sales of the product.

The term of the agreement continues until the expiration of the applicable royalty term on a country-by-country
and  product-by-product  basis.  Upon  expiration  of  the  term  of  the  agreement,  the  licensed  rights  granted  to  us  under  the
agreement, to the extent they remain in effect at the time of expiration, will thereafter become irrevocable, perpetual and
fully paid-up licenses that survive the expiration of the term. We have a right to terminate the license agreement at any time
during the term for any reason upon 90 days’ written notice to Camurus. Camurus has a right to terminate the agreement
prior  to  expiration  of  its  term  for  our  material  breach  of  the  agreement,  if  we  voluntarily  or  involuntarily  file  for
bankruptcy, or for our bringing an action seeking to have a Camurus license patent right declared invalid. Upon any early
termination  of  the  license  agreement  not  due  to  Camurus’  material  breach,  all  licensed  rights  granted  under  the  license
agreement will terminate.

Takeda

In March 2018, we acquired exclusive, worldwide rights from Takeda to develop and commercialize RM-853.
RM-853 is a potent, orally available GOAT inhibitor currently in preclinical development for Prader-Willi Syndrome, or
PWS. PWS is a rare genetic disorder that results in hyperphagia and early-onset, life-threatening obesity, for which there
are no approved therapeutic options. We will assume sole responsibility for the global product development and
commercialization of RM-853. Takeda received an upfront fee of $4.4 million which we settled in April 2018 with shares
of our common stock, and is eligible to receive milestone payments of approximately $140.0 million, most of which are
payable upon regulatory approval or are sales milestones. In addition, Takeda is eligible to receive back-end development
milestones, and single-digit royalties on future RM-853 sales.

Among other obligations under our agreement with Takeda, Takeda has a right of first negotiation under certain

circumstances to sublicense the assets we acquired from Takeda in the territory of Japan. This right of first negotiation
remains in effect until the earlier of five years from the date of the agreement, consummation of a change in control, or
sublicense to a third party. This may delay or limit our ability to enter into certain transactions with respect to this product
candidate.

The term of the agreement continues until the expiration of the applicable royalty term on a country-by-country

and product-by-product basis. Upon expiration of the term of the agreement, the licensed rights granted to us under the
agreement, to the extent they remain in effect at the time of expiration, will thereafter become irrevocable, perpetual and
fully paid-up licenses that survive the expiration of the term. We have a right to terminate the license agreement at any time
during the term for any reason upon 90 days’ written notice to Takeda. Takeda has a right to terminate the agreement prior
to expiration of its term for our material breach of the agreement, if we voluntarily or involuntarily file for bankruptcy, or
for our bringing an action seeking to have a Takeda license patent right declared invalid. Upon any early termination of the
license agreement not due to Takeda’s material breach, all licensed rights granted under the license agreement will
terminate.

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RareStone Group Ltd.

In December 2021, we entered into an Exclusive License Agreement with RareStone, or the RareStone License.
Pursuant  to  the  RareStone  License,  we  granted  to  RareStone  an  exclusive,  sublicensable,  royalty-bearing  license  under
certain  patent  rights  and  know-how  to  develop,  manufacture,  commercialize  and  otherwise  exploit  any  pharmaceutical
product  that  contains  setmelanotide  in  the  diagnosis,  treatment  or  prevention  of  conditions  and  diseases  in  humans  in
China,  including  mainland  China,  Hong  Kong  and  Macao.  RareStone  has  a  right  of  first  negotiation  in  the  event  that
Rhythm chooses to grant a license to develop or commercialize the licensed product in Taiwan.

According to the terms of the RareStone License, RareStone has agreed to seek local approvals to commercialize
IMCIVREE  for  the  treatment  of  obesity  and  hyperphagia  due  to  biallelic  proopiomelanocortin  (POMC),  proprotein
convertase  subtilisin/kexin  type  1  (PCSK1)  or  leptin  receptor  (LEPR)  deficiency,  as  well  as  Bardet-Biedl  and  Alström
syndromes. Additionally, RareStone agreed to fund efforts to identify and enroll patients from China in Rhythm’s global
EMANATE  trial,  a  Phase  3,  randomized,  double-blind,  placebo-controlled  trial  to  evaluate  setmelanotide  in  five
independent sub-studies in patients with obesity due to a heterozygous variant of POMC/PCSK1 or LEPR; certain variants
of the SRC1 gene, certain variants of the SH2B1 gene, or PCSK1 N221D deletions within the MC4R pathway. According
to  the  terms  of  the  RareStone License,  RareStone  made  an  upfront  payment  to  Rhythm  of  $7.0  million  and  issued  $5.0
million in equity to Rhythm. Rhythm will be eligible to receive development and commercialization milestones of up to
$62.5 million, as well as tiered royalty payments on annual net sales of IMCIVREE.

Patents and Proprietary Rights

We  have  in-licensed  a  large  patent  portfolio  from  Ipsen  for  our  melanocortin  programs.  The  portfolio  includes
multiple  patent  families,  and  all  of  these  in-licensed  patent  families  are  being  prosecuted  or  maintained  by  Ipsen  in
consultation with us. We have also filed patent applications in six families which are exclusively owned and maintained by
us that relate to the melanocortin program.

Our MC4R portfolio of licensed and exclusively owned patent families, which includes setmelanotide, consists of
13  patent  families  currently  being  prosecuted  or  maintained,  which  include  applications  and  patents  directed  to
compositions  of  matter,  formulations  and  methods  of  treatment  using  setmelanotide.  As  of  December  31,  2020,  the
portfolio for the MC4 program consists of 14 issued United States patents and 228 issued non-United States patents across
8  of  the  13  families.  There  also  13  pending  United  States  patent  applications  and  76  pending  non-United  States
applications in 24 jurisdictions.

In  the  patent  family  directed  to  selected  MC4R  receptor  agonists,  including  the  composition  of  matter  for
setmelanotide,  we  have  3  issued  United  States  patents  and  108  issued  non-United  States  patents,  including  Australia,
Canada, China, Europe, Hong Kong, India, Israel, Japan, Korea, New Zealand, Russia and Singapore. The standard 20-year
term for patents in this family would expire in 2026, but two of the United States patents are expected to expire in 2027 due
to patent term adjustments. Patent term extensions for delays in marketing approval may also extend the terms of patents in
this family, and we have filed for patent term extension in the United States that, if granted, would extend the composition
of matter patent protection to 2032.

In  addition  to  the  patents  and  patent  applications  discussed  above,  we  co-own  one  patent  family  with  Charité-
Universitätsmedizin Berlin, which has been filed in 21 jurisdictions. We also co-own one patent family with the University
of Strasbourg and the French National Institute of Health and Medical Research, which has been filed in 4 jurisdictions.
Both of these patent families relate to the melanocortin program.

We have also in-licensed a patent family from Takeda directed to the composition of matter and methods of use of
ghrelin O-acetyltransferase inhibitors, including RM-853. This patent family includes 1 issued United States patent, nine
issued non-United States patents including China, Europe, and Japan, and one allowed application in Canada. The standard
20-year  term  for  the  patents  in  this  family  will  expire  in  2033,  though  patent  term  extensions  for  delays  in  marketing
approval may also extend the terms of patents in this family.

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Intellectual Property Protection Strategy

We currently seek, and intend to continue seeking, patent protection whenever commercially reasonable for any
patentable aspects of setmelanotide and related technology or any new products or product candidates we acquire in the
future. Where our intellectual property is not protected by patents, we may seek to protect it through other means, including
maintenance  of  trade  secrets  and  careful  protection  of  our  proprietary  information.  Our  license  from  Ipsen  for  the
melanocortin program require Ipsen, subject to certain exceptions and upon consultation with us, to prosecute and maintain
its patent rights as they relate to the licensed compounds and methods. If Ipsen decides to cease prosecution or maintenance
of any of the licensed patent rights, we have the option to take over prosecution and maintenance of those patents and Ipsen
will assign to us all of its rights in such patents. For those patent rights that we own exclusively, we control all prosecution
and maintenance activities.

The patent positions of biopharmaceutical companies are generally uncertain and involve complex legal, scientific
and  factual  questions.  In  addition,  the  coverage  claimed  in  a  patent  application  can  be  significantly  reduced  before  the
patent  is  issued,  and  its  scope  can  be  reinterpreted  after  issuance.  Consequently,  we  do  not  know  whether  the  product
candidate  we  in-license  will  be  protectable  or  remain  protected  by  enforceable  patents.  We  cannot  predict  whether  the
patent applications we are currently pursuing will issue as patents in any particular jurisdiction, and furthermore, we cannot
determine  whether  the  claims  of  any  issued  patents  will  provide  sufficient  proprietary  protection  to  protect  us  from
competitors, or will be challenged, circumvented or invalidated by third parties. Because patent applications in the United
States and certain other jurisdictions are maintained in secrecy for 18 months, and since publication of discoveries in the
scientific or patent literature often lags behind actual discoveries, we cannot be certain of the priority of inventions covered
by pending patent applications. This potential issue is exacerbated by the fact that, prior to March 16, 2013, in the United
States,  the  first  to  make  the  claimed  invention  may  be  entitled  to  the  patent.  On  March  16,  2013,  the  United  States
transitioned to a “first to file” system in which the first inventor to file a patent application may be entitled to the patent.
For  applications  filed  prior  to  the  institution  of  the  “first  to  file”  system,  we  may  have  to  participate  in  interference
proceedings declared by the United States Patent and Trademark Office, or PTO, or a foreign patent office to determine
priority of invention. Moreover, we may have to participate in other proceedings declared by the United States PTO or a
foreign patent office, such as post-grant proceedings and oppositions, that challenge the validity of a granted patent. Such
proceedings could result in substantial cost, even if the eventual outcome is favorable to us.

Although  we  currently  have  issued  patents  directed  to  a  number  of  different  attributes  of  our  products,  and
pending  applications  on  others,  there  can  be  no  assurance  that  any  issued  patents  would  be  held  valid  by  a  court  of
competent jurisdiction. An adverse outcome could subject us to significant liabilities to third parties, require disputed rights
to be licensed from third parties or require us to cease using specific compounds or technology. To the extent prudent, we
intend to bring litigation against third parties that we believe are infringing our patents.

The  term  of  individual  patents  depends  upon  the  legal  term  of  the  patents  in  the  countries  in  which  they  are
obtained. In most countries in which we file, the patent term is 20 years from the earliest date of filing a non-provisional
patent application. In the United States, a patent’s term may be lengthened by patent term adjustment, which compensates a
patentee  for  administrative  delays  by  the  United  States  PTO  in  granting  a  patent,  or  may  be  shortened  if  a  patent  is
terminally disclaimed over another patent with an earlier expiration date.

As mentioned above, in the United States, the patent term of a patent that covers an FDA-approved drug may also
be eligible for patent term extension, which permits patent term restoration as compensation for the patent term lost during
the FDA regulatory review process. Setmelanotide has received FDA approval and we have filed for patent term extension
on that product. In the future, if and when our other pharmaceutical products receive FDA approval, we expect to apply for
patent term extensions on patents covering those products. We intend to seek patent term adjustments and extensions to any
of  our  issued  patents  in  any  jurisdiction  where  these  are  available,  however  there  is  no  guarantee  that  the  applicable
authorities, including the FDA in the United States, will agree with our assessment of whether such extensions should be
granted, and even if granted, the length of such adjustments or extensions.

To  protect  our  rights  to  any  of  our  issued  patents  and  proprietary  information,  we  may  need  to  litigate  against
infringing  third  parties,  or  avail  ourselves  of  the  courts  or  participate  in  hearings  to  determine  the  scope  and  validity  of
those patents or other proprietary rights. These types of proceedings are often costly and could be very time-consuming to

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us, and we cannot be certain that the deciding authorities will rule in our favor. An unfavorable decision could result in the
invalidation  or  a  limitation  in  the  scope  of  our  patents  or  forfeiture  of  the  rights  associated  with  our  patents  or  pending
patent applications. Any such decision could result in our key technologies not being protectable, allowing third parties to
use our technology without being required to pay us licensing fees or may compel us to license needed technologies from
third  parties  to  avoid  infringing  third-party  patent  and  proprietary  rights.  Such  a  decision  could  even  result  in  the
invalidation or a limitation in the scope of our patents or could cause us to lose our rights under existing issued patents or
not to have rights granted under our pending patent applications.

In addition, we intend to seek orphan drug exclusivity in jurisdictions in which it is available. A prerequisite to
orphan  drug  exclusivity  in  the  United  States  and  in  the  European  Union  is  orphan  drug  designation.  An  orphan  drug
designation may be granted, subject to fulfillment of specific criteria, where a drug is developed specifically to treat a rare
or  uncommon  medical  treatment.  If  a  product  which  has  an  orphan  drug  designation  subsequently  receives  the  first
regulatory  approval  for  the  indication  for  which  it  has  such  designation,  the  product  is  entitled  to  orphan  exclusivity,
meaning that the applicable regulatory authority may not approve any other applications to market the same drug for the
same indication, except in certain very limited circumstances, for a period of seven years in the United States and 10 years
in  the  European  Union.  Orphan  drug  exclusivity  does  not  prevent  competitors  from  developing  or  marketing  different
drugs for an indication. We have received orphan drug designation in the United States for the use of setmelanotide for five
indications and approval for two of those indications.

We also rely on trade secret protection for our confidential and proprietary information. Although we take steps to
protect  our  proprietary  information  and  trade  secrets,  including  through  contractual  means  with  our  employees  and
consultants,  no  assurance  can  be  given  that  others  will  not  independently  develop  substantially  equivalent  proprietary
information  and  techniques  or  otherwise  gain  access  to  our  trade  secrets  or  disclose  such  technology,  or  that  we  can
meaningfully  protect  our  trade  secrets.  It  is  our  policy  to  require  our  employees,  consultants,  outside  scientific
collaborators, sponsored researchers and other advisors to execute confidentiality agreements upon the commencement of
employment or consulting relationships with us. These agreements provide that all confidential information developed or
made known to the individual during the course of the individual’s relationship with us is to be kept confidential and not
disclosed  to  third  parties  except  in  specific  circumstances.  In  the  case  of  employees,  the  agreements  provide  that  all
inventions  conceived  by  the  individual  will  be  our  exclusive  property.  There  can  be  no  assurance,  however,  that  these
agreements will provide meaningful protection or adequate remedies for our trade secrets in the event of unauthorized use
or disclosure of such information.

Manufacturing

We currently contract with various third parties for the manufacture of setmelanotide and intend to continue to do
so in the future. We have entered into process development and manufacturing service agreements with our CMOs, Corden
Pharma Brussels S.A, or Corden (formerly Peptisyntha SA prior to its acquisition by Corden), PolyPeptide Group, Braine
L’Alleud,  or  Polypeptide,  Neuland  Laboratories,  and  Recipharm  Monts  S.A.S  for  certain  process  development  and
manufacturing services for regulatory starting materials and/or drug substance, or API, and drug product in connection with
the manufacture of setmelanotide.  We have also entered into commercial supply agreements with both Polypeptide and
Recipharm.  Under  our  agreements,  we  pay  these  third  parties  for  services  and/or  manufacture  of  setmelanotide  in
accordance with the terms of mutually agreed upon work orders, which we may enter into from time to time. We may need
to  engage  additional  third-party  suppliers  to  manufacture  our  clinical  and  commercial  drug  supplies  in  the  future.  In
connection with our commercialization of setmelanotide or any future product candidate, we have engaged and could need
to  engage  other  third  parties  to  assist  in  manufacturing  and/or  supply  chain  related  aspects.  While  there  are  a  limited
number  of  companies  that  can  produce  raw  materials  and  API  in  the  quantities  and  with  the  quality  and  purity  that  we
require for our product, based on our diligence to date, we believe our current network of manufacturing partners are able
to fulfill these requirements, and are capable of continuing to expand capacity as needed. Additionally, we have, and will
continue  to  evaluate  further  relationships  with  additional  suppliers  to  increase  overall  capacity  as  well  as  further  reduce
risks associated with reliance on a limited number of suppliers for manufacturing. Under the current agreements, each party
is subject to customary indemnification provisions.

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Our contract manufacturing agreements give us visibility into the expected future cost of producing setmelanotide
at  commercial  scale.  Based  upon  a  range  of  prices  of  currently-marketed  therapies  indicated  for  orphan  diseases,  we
believe that our cost of goods for setmelanotide will be highly competitive.

We currently have no plans to build our own clinical or commercial scale manufacturing capabilities. To meet our
projected needs for clinical supplies to support our activities through regulatory approval and commercial manufacturing,
the  CMOs  with  whom  we  currently  work  may  need  to  increase  scale  of  production  or  we  expect  that  we  may  need  to
secure  additional  capacity  or  seek  alternate  suppliers.  We  believe  that  our  current  suppliers  and  CMOs  are  able  to  scale
production  to  meet  our  clinical  and  commercial  demands.  Because  we  rely  on  these  CMOs,  we  have  personnel  with
pharmaceutical development and manufacturing experience who are responsible for maintaining our CMO relationships.

Setmelanotide  is  distributed  in  the  U.S.  through  our  specialty  pharmacy  and  in  the  EU/UK  through  third-party
service  providers  that  deliver  the  medication  to  patients.  We  plan  to  continue  building  out  our  network  for  commercial
distribution in jurisdictions in which setmelanotide is approved.

Regulatory Matters

Government Regulation

Government authorities in the United States, at the federal, state and local level, and other countries extensively
regulate,  among  other  things,  the  research,  development,  testing,  manufacture,  quality  control,  approval,  labeling,
packaging,  storage,  record-keeping,  promotion,  advertising,  distribution,  marketing  and  export  and  import  of  drug
products. A new drug must be approved by the FDA through NDA process or by comparable foreign regulatory authorities
through similar applications before it may be legally marketed in the United States and in foreign jurisdictions. We, along
with  any  third-party  contractors,  will  be  required  to  navigate  the  various  preclinical,  clinical  and  commercial  approval
requirements of the governing regulatory agencies of the countries in which we wish to conduct studies or seek approval of
our products and product candidates. The process of obtaining regulatory approvals and the subsequent compliance with
applicable federal, state, local and foreign statutes and regulations require the expenditure of substantial time and financial
resources.

U.S. Drug Development Process

In the United States, the FDA regulates drugs under the federal Food, Drug, and Cosmetic Act (FDCA) and its
implementing regulations. The process of obtaining regulatory approvals and the subsequent compliance with appropriate
federal, state, local and foreign statutes and regulations require the expenditure of substantial time and financial resources.
The process required by the FDA before a drug may be marketed in the United States generally involves the following:

● completion of preclinical laboratory tests, animal studies and formulation studies in accordance with FDA’s

Good Laboratory Practice requirements and other applicable regulations;

● submission  to  the  FDA  of  an  Investigational  New  Drug  Application  (IND),  which  must  become  effective

before human clinical trials may begin;

● approval by an independent Institutional Review Board (IRB) or ethics committee at each clinical site before

each trial may be initiated;

● performance of adequate and well-controlled human clinical trials in accordance with good clinical practices

(GCPs), to establish the safety and efficacy of the proposed drug for its intended use;

● preparation of and submission to the FDA of an NDA after completion of all pivotal trials;

● a determination by the FDA within 60 days of its receipt of an NDA to file the application for review

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● satisfactory completion of an FDA advisory committee review, if applicable;

● satisfactory completion of an FDA inspection of the manufacturing facility or facilities at which the drug is
produced to assess compliance with current Good Manufacturing Practice (cGMP) requirements to assure that
the facilities, methods and controls are adequate to preserve the drug’s identity, strength, quality and purity,
and of selected clinical investigation sites to assess compliance with GCPs; and

● FDA  review  and  approval  of  the  NDA  to  permit  commercial  marketing  of  the  product  for  particular

indications for use in the United States.

Prior to beginning the first clinical trial with a product candidate in the United States, a sponsor must submit an
IND to the FDA. An IND is a request for authorization from the FDA to administer an investigational new drug product to
humans.  The  central  focus  of  an  IND  submission  is  on  the  general  investigational  plan  and  the  protocol(s)  for  clinical
studies.  The  IND  also  includes  results  of  animal  and  in  vitro  studies  assessing  the  toxicology,  pharmacokinetics,
pharmacology, and pharmacodynamic characteristics of the product; chemistry, manufacturing, and controls information;
and any available human data or literature to support the use of the investigational product. An IND must become effective
before human clinical trials may begin. The IND automatically becomes effective 30 days after receipt by the FDA, unless
the  FDA,  within  the  30-  day  time  period,  raises  safety  concerns  or  questions  about  the  proposed  clinical  trial.  In  such  a
case, the IND may be placed on clinical hold and the IND sponsor and the FDA must resolve any outstanding concerns or
questions before the clinical trial can begin. Submission of an IND therefore may or may not result in FDA authorization to
begin a clinical trial.

Clinical trials involve the administration of the investigational product to human subjects under the supervision of
qualified  investigators  in  accordance  with  GCPs,  which  include  the  requirement  that  all  research  subjects  provide  their
informed consent for their participation in any clinical study. Clinical trials are conducted under protocols detailing, among
other things, the objectives of the study, the parameters to be used in monitoring safety and the effectiveness criteria to be
evaluated.  A  separate  submission  to  the  existing  IND  must  be  made  for  each  successive  clinical  trial  conducted  during
product  development  and  for  any  subsequent  protocol  amendments.  Furthermore,  an  independent  IRB  for  each  site
proposing to conduct the clinical trial must review and approve the plan for any clinical trial and its informed consent form
before the clinical trial begins at that site and must monitor the study until completed. Some studies also include oversight
by an independent group of qualified experts organized by the clinical study sponsor, known as a data safety monitoring
board,  which  provides  authorization  for  whether  or  not  a  study  may  move  forward  at  designated  check  points  based  on
access to certain data from the study and may halt the clinical trial if it determines that there is an unacceptable safety risk
for subjects or other grounds, such as no demonstration of efficacy. Depending on its charter, this group may determine
whether a trial may move forward at designated check points based on access to certain data from the trial. The FDA or the
sponsor  may  suspend  a  clinical  trial  at  any  time  on  various  grounds,  including  a  finding  that  the  research  subjects  or
patients are being exposed to an unacceptable health risk. Similarly, an IRB can suspend or terminate approval of a clinical
trial at its institution if the clinical trial is not being conducted in accordance with the IRB’s requirements or if the drug has
been associated with unexpected serious harm to patients. There are also requirements governing the reporting of ongoing
clinical studies and clinical study results to public registries.

Human clinical trials are typically conducted in three sequential phases that may overlap or be combined:

● Phase 1: The product candidate is initially introduced into healthy human subjects or patients with the
target  disease  or  condition.  These  studies  are  designed  to  test  the  safety,  dosage  tolerance,  absorption,
metabolism  and  distribution  of  the  investigational  product  in  humans,  the  side  effects  associated  with
increasing doses, and, if possible, to gain early evidence on effectiveness.

● Phase 2: The product candidate is administered to a limited patient population with a specified disease or
condition  to  evaluate  the  preliminary  efficacy,  optimal  dosages  and  dosing  schedule  and  to  identify
possible adverse side effects and safety risks. Multiple Phase 2 clinical trials may be conducted to obtain
information prior to beginning larger and more expensive Phase 3 clinical trials.

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● Phase  3:  The  product  candidate  is  administered  to  an  expanded  patient  population  to  further  evaluate
dosage,  to  provide  statistically  significant  evidence  of  clinical  efficacy  and  to  further  test  for  safety,
generally  at  multiple  geographically  dispersed  clinical  trial  sites.  These  clinical  trials  are  intended  to
establish the overall risk/benefit ratio of the investigational product and to provide an adequate basis for
product approval.

In some cases, the FDA may require, or sponsors may voluntarily pursue, additional clinical trials after a product
is approved to gain more information about the product. These so-called Phase 4 studies, may be conducted after initial
marketing  approval,  and  may  be  used  to  gain  additional  experience  from  the  treatment  of  patients  in  the  intended
therapeutic indication. In certain instances, the FDA may mandate the performance of Phase 4 clinical trials as a condition
of approval of an NDA.

Concurrent  with  clinical  trials,  companies  usually  complete  additional  animal  studies  and  must  also  develop
additional information about the chemistry and physical characteristics of the drug and finalize a process for manufacturing
the product in commercial quantities in accordance with cGMP requirements. The manufacturing process must be capable
of consistently producing quality batches of the product candidate and, among other things, the manufacturer must develop
methods for testing the identity, strength, quality and purity of the final drug. In addition, appropriate packaging must be
selected  and  tested,  and  stability  studies  must  be  conducted  to  demonstrate  that  the  product  candidate  does  not  undergo
unacceptable deterioration over its shelf life.

While  the  IND  is  active,  progress  reports  summarizing  the  results  of  the  clinical  trials  and  nonclinical  studies
performed  since  the  last  progress  report,  among  other  information,  must  be  submitted  at  least  annually  to  the  FDA,  and
written IND safety reports must be submitted to the FDA and investigators for serious and unexpected suspected adverse
events, findings from other studies suggesting a significant risk to humans exposed to the same or similar drugs, findings
from animal or in vitro testing suggesting a significant risk to humans, and any clinically important increased incidence of
a serious suspected adverse reaction compared to that listed in the protocol or investigator brochure.

In  addition,  during  the  development  of  a  new  drug,  sponsors  are  given  opportunities  to  meet  with  the  FDA  at
certain points. These points may be prior to submission of an IND, at the end of Phase 2, and before an NDA is submitted.
Meetings at other times may be requested. These meetings can provide an opportunity for the sponsor to share information
about the data gathered to date, for the FDA to provide advice, and for the sponsor and the FDA to reach agreement on the
next phase of development. Sponsors typically use the meetings at the end of the Phase 2 trial to discuss Phase 2 clinical
results and present plans for the pivotal Phase 3 clinical trials that they believe will support approval of the new drug.

U.S. Review and Approval Process

Assuming successful completion of all required testing in accordance with all applicable regulatory requirements,
the results of product development, preclinical and other non-clinical studies and clinical trials, along with descriptions of
the manufacturing process, analytical tests conducted on the chemistry of the drug, proposed labeling and other relevant
information are submitted to the FDA as part of an NDA requesting approval to market the product. Data can come from
company-sponsored clinical studies intended to test the safety and effectiveness of a use of the product, or from a number
of alternative sources, including studies initiated by independent investigators. The submission of an NDA is subject to the
payment of substantial user fees; a waiver of such fees may be obtained under certain limited circumstances. Additionally,
no user fees are assessed on NDAs for products designated as orphan drugs, unless the product also includes a non-orphan
indication.

The FDA conducts a preliminary review of all NDAs within the first 60 days after submission, before accepting
them  for  filing,  to  determine  whether  they  are  sufficiently  complete  to  permit  substantive  review  The  FDA  may  request
additional information rather than accept an NDA for filing. In this event, the NDA must be resubmitted with the additional
information. The resubmitted application also is subject to review before the FDA accepts it for filing. Once filed, the FDA
reviews an NDA to determine, among other things, whether a product is safe and effective for its intended use and whether
its manufacturing is cGMP-compliant to assure and preserve the product’s identity, strength, quality and purity. Under the
Prescription Drug User Fee Act (PDUFA) guidelines that are currently in effect, the FDA has a goal of ten months from the
filing date to complete a standard review of an NDA for a drug that is a new molecular entity. This review

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typically takes twelve months from the date the NDA is submitted to FDA because the FDA has approximately two months
to make a “filing” decision after it the application is submitted.

The FDA may refer an application for a novel drug to an advisory committee. An advisory committee is a panel of
independent  experts,  including  clinicians  and  other  scientific  experts,  that  reviews,  evaluates  and  provides  a
recommendation as to whether the application should be approved and under what conditions. The FDA is not bound by
the recommendations of an advisory committee, but it considers such recommendations carefully when making decisions.

Before  approving  an  NDA,  the  FDA  will  typically  inspect  the  facility  or  facilities  where  the  product  is
manufactured. The FDA will not approve an application unless it determines that the manufacturing processes and facilities
are in compliance with cGMP and adequate to assure consistent production of the product within required specifications.
Additionally, before approving a NDA, the FDA will typically inspect one or more clinical sites to assure compliance with
GCPs. If the FDA determines that the application, manufacturing process or manufacturing facilities are not acceptable, it
will outline the deficiencies in the submission and often will request additional testing or information. Notwithstanding the
submission of any requested additional information, the FDA ultimately may decide that the application does not satisfy
the regulatory criteria for approval.

After the FDA evaluates an NDA and conducts inspections of manufacturing facilities where the investigational
product and/or its drug substance will be produced, the FDA may issue an approval letter or a Complete Response Letter
(CRL).  An  approval  letter  authorizes  commercial  marketing  of  the  product  with  specific  prescribing  information  for
specific indications. A CRL will describe all of the deficiencies that the FDA has identified in the NDA, except that where
the FDA determines that the data supporting the application are inadequate to support approval, the FDA may issue the
CRL without first conducting required inspections and/or reviewing proposed labeling. In issuing the CRL, the FDA may
recommend  actions  that  the  applicant  might  take  to  place  the  NDA  in  condition  for  approval,  including  requests  for
additional information or clarification. The FDA may delay or refuse approval of an NDA if applicable regulatory criteria
are not satisfied, require additional testing or information and/or require post-marketing testing and surveillance to monitor
safety or efficacy of a product.

If  regulatory  approval  of  a  product  is  granted,  such  approval  will  be  granted  for  particular  indications  and  may
entail limitations on the indicated uses for which such product may be marketed. For example, the FDA may approve the
NDA with a Risk Evaluation and Mitigation Strategy (REMS) to ensure the benefits of the product outweigh its risks. A
REMS is a safety strategy to manage a known or potential serious risk associated with a medicine and to enable patients to
have  continued  access  to  such  medicines  by  managing  their  safe  use,  and  could  include  medication  guides,  physician
communication plans, or elements to assure safe use, such as restricted distribution methods, patient registries, and other
risk minimization tools. The FDA also may condition approval on, among other things, changes to proposed labeling or the
development of adequate controls and specifications. The FDA may also require one or more Phase 4 post- market studies
and surveillance to further assess and monitor the product’s safety and effectiveness after commercialization, and may limit
further marketing of the product based on the results of these post-marketing studies.

In addition, the Pediatric Research Equity Act (PREA) requires a sponsor to conduct pediatric clinical trials for
most  drugs,  for  a  new  active  ingredient,  new  indication,  new  dosage  form,  new  dosing  regimen  or  new  route  of
administration. Under PREA, original NDAs and supplements must contain a pediatric assessment unless the sponsor has
received  a  deferral  or  waiver.  The  required  assessment  must  evaluate  the  safety  and  effectiveness  of  the  product  for  the
claimed  indications  in  all  relevant  pediatric  subpopulations  and  support  dosing  and  administration  for  each  pediatric
subpopulation for which the product is safe and effective. The sponsor or FDA may request a deferral of pediatric clinical
trials for some or all of the pediatric subpopulations. A deferral may be granted for several reasons, including a finding that
the  drug  is  ready  for  approval  for  use  in  adults  before  pediatric  clinical  trials  are  complete  or  that  additional  safety  or
effectiveness  data  needs  to  be  collected  before  the  pediatric  clinical  trials  begin.  The  FDA  must  send  a  non-compliance
letter to any sponsor that fails to submit the required assessment, keep a deferral current or fails to submit a request for
approval of a pediatric formulation.

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Expedited Development and Review Programs

The FDA offers a number of expedited development and review programs for qualifying product candidates. For
example,  the  Fast  Track  program  is  intended  to  expedite  or  facilitate  the  process  for  reviewing  new  products  that  are
intended to treat a serious or life-threatening disease or condition and demonstrate the potential to address unmet medical
needs  for  the  disease  or  condition.  Fast  Track  designation  applies  to  the  combination  of  the  product  and  the  specific
indication for which it is being studied. The sponsor of a fast track product has opportunities for more frequent interactions
with the applicable FDA review team during product development and, once an NDA is submitted, the product candidate
may  be  eligible  for  priority  review.  A  Fast  Track  product  may  also  be  eligible  for  rolling  review,  where  the  FDA  may
consider  for  review  sections  of  the  NDA  on  a  rolling  basis  before  the  complete  application  is  submitted,  if  the  sponsor
provides  a  schedule  for  the  submission  of  the  sections  of  the  NDA,  the  FDA  agrees  to  accept  sections  of  the  NDA  and
determines that the schedule is acceptable, and the sponsor pays any required user fees upon submission of the first section
of the NDA.

A  product  candidate  intended  to  treat  a  serious  or  life-threatening  disease  or  condition  may  also  be  eligible  for
Breakthrough Therapy designation to expedite its development and review. A product candidate can receive Breakthrough
Therapy designation if preliminary clinical evidence indicates that the product candidate, alone or in combination with one
or  more  other  drugs  or  biologics,  may  demonstrate  substantial  improvement  over  existing  therapies  on  one  or  more
clinically  significant  endpoints,  such  as  substantial  treatment  effects  observed  early  in  clinical  development.  The
designation  includes  all  of  the  Fast  Track  program  features,  as  well  as  more  intensive  FDA  interaction  and  guidance
beginning as early as Phase 1 and an organizational commitment to expedite the development and review of the product
candidate, including involvement of senior managers.

Any  marketing  application  for  a  drug  submitted  to  the  FDA  for  approval,  including  a  product  candidate  with  a
Fast  Track  designation  and/or  Breakthrough  Therapy  designation,  may  be  eligible  for  other  types  of  FDA  programs
intended to expedite the FDA review and approval process, such as priority review and accelerated approval. A product
candidate  is  eligible  for  priority  review  if  it  is  designed  to  treat  a  serious  or  life-threatening  disease  or  condition,  and  if
approved, would provide a significant improvement in safety or effectiveness compared to available alternatives for such
disease or condition. For new-molecular-entity NDAs, priority review designation means the FDA’s goal is to take action
on the marketing application within six months of the 60-day filing date.

Additionally,  product  candidates  studied  for  their  safety  and  effectiveness  in  treating  serious  or  life-threatening
diseases or conditions may receive accelerated approval upon a determination that the product has an effect on a surrogate
endpoint  that  is  reasonably  likely  to  predict  clinical  benefit,  or  on  a  clinical  endpoint  that  can  be  measured  earlier  than
irreversible morbidity or mortality, that is reasonably likely to predict an effect on irreversible morbidity or mortality or
other clinical benefit, taking into account the severity, rarity, or prevalence of the condition and the availability or lack of
alternative  treatments.  As  a  condition  of  accelerated  approval,  the  FDA  will  generally  require  the  sponsor  to  perform
adequate  and  well-controlled  post-marketing  clinical  studies  to  verify  and  describe  the  anticipated  effect  on  irreversible
morbidity  or  mortality  or  other  clinical  benefit.  Products  receiving  accelerated  approval  may  be  subject  to  expedited
withdrawal procedures if the sponsor fails to conduct the required post-marketing studies or if such studies fail to verify the
predicted clinical benefit. In addition, the FDA currently requires as a condition for accelerated approval pre-approval of
promotional materials, which could adversely impact the timing of the commercial launch of the product.

Fast  Track  designation,  Breakthrough  Therapy  designation,  priority  review,  and  accelerated  approval  do  not
change  the  standards  for  approval,  but  may  expedite  the  development  or  approval  process.  Even  if  a  product  candidate
qualifies for one or more of these programs, the FDA may later decide that the product no longer meets the conditions for
qualification or decide that the time period for FDA review or approval will not be shortened.

Orphan Drug Designation and Exclusivity

Under the Orphan Drug Act, the FDA may grant orphan designation to a drug intended to treat a rare disease or
condition,  defined  as  a  disease  or  condition  with  a  patient  population  of  fewer  than  200,000  individuals  in  the  United
States,  or  a  patient  population  greater  than  200,000  individuals  in  the  United  States  and  when  there  is  no  reasonable
expectation that the cost of developing and making available the drug in the United States will be recovered from sales in

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the  United  States  for  that  drug.  Orphan  drug  designation  must  be  requested  before  submitting  an  NDA.  After  the  FDA
grants  orphan  drug  designation,  the  generic  identity  of  the  therapeutic  agent  and  its  potential  orphan  use  are  disclosed
publicly by the FDA.

If a product that has orphan drug designation subsequently receives the first FDA approval for a particular active
ingredient  for  the  disease  for  which  it  has  such  designation,  the  product  is  entitled  to  orphan  product  exclusivity,  which
means that the FDA may not approve any other applications, including a full NDA, to market the same drug for the same
indication for seven years, except in limited circumstances, such as a showing of clinical superiority to the product with
orphan drug exclusivity or if the FDA finds that the holder of the orphan drug exclusivity has not shown that it can assure
the availability of sufficient quantities of the orphan drug to meet the needs of patients with the disease or condition for
which the drug was designated. Orphan drug exclusivity does not prevent the FDA from approving a different drug for the
same disease or condition, or the same drug for a different disease or condition. Among the other benefits of orphan drug
designation are tax credits for certain research and a waiver of the NDA application user fee.

A designated orphan drug many not receive orphan drug exclusivity if it is approved for a use that is broader than
the indication for which it received orphan designation. In addition, orphan drug exclusive marketing rights in the United
States may be lost if the FDA later determines that the request for designation was materially defective or, as noted above,
if a second applicant demonstrates that its product is clinically superior to the approved product with orphan exclusivity or
the  manufacturer  of  the  approved  product  is  unable  to  assure  sufficient  quantities  of  the  product  to  meet  the  needs  of
patients with the rare disease or condition.

Post-approval Requirements

Drug  products  manufactured  or  distributed  pursuant  to  FDA  approvals  are  subject  to  pervasive  and  continuing
regulation  by  the  FDA,  including,  among  other  things,  requirements  relating  to  record-keeping,  reporting  of  adverse
experiences,  periodic  reporting,  product  sampling  and  distribution,  and  advertising  and  promotion  of  the  product.  After
approval, most changes to the approved product, such as adding new indications or other labeling claims, are subject to
prior  FDA  review  and  approval.  There  also  are  continuing,  annual  program  fees  for  any  marketed  products.  Drug
manufacturers  and  their  subcontractors  are  required  to  register  their  establishments  with  the  FDA  and  certain  state
agencies, and are subject to periodic unannounced inspections by the FDA and certain state agencies for compliance with
cGMP,  which  impose  certain  procedural  and  documentation  requirements  upon  us  and  our  third-party  manufacturers.
Changes to the manufacturing process are strictly regulated, and, depending on the significance of the change, may require
prior FDA approval before being implemented. FDA regulations also require investigation and correction of any deviations
from  cGMP  and  impose  reporting  requirements.  Accordingly,  manufacturers  must  continue  to  expend  time,  money  and
effort  in  the  area  of  production  and  quality  control  to  maintain  compliance  with  cGMP  and  other  aspects  of  regulatory
compliance.

The FDA may withdraw approval if compliance with regulatory requirements and standards is not maintained or
if problems occur after the product reaches the market. Later discovery of previously unknown problems with a product,
including adverse events of unanticipated severity or frequency, or with manufacturing processes, or failure to comply with
regulatory requirements, may result in revisions to the approved labeling to add new safety information; imposition of post-
market studies or clinical studies to assess new safety risks; or imposition of distribution restrictions or other restrictions
under a REMS program. Other potential consequences include, among other things:

● restrictions on the marketing or manufacturing of the product, complete withdrawal of the product from the

market or product recalls;

● fines, warning letters, or untitled letters;

● clinical holds on clinical studies;

● refusal of the FDA to approve pending applications or supplements to approved applications, or suspension

or revocation of product approvals;

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● product seizure or detention, or refusal to permit the import or export of products;

● consent decrees, corporate integrity agreements, debarment or exclusion from federal healthcare programs;

● mandated modification of promotional materials and labeling and the issuance of corrective information;

● the  issuance  of  safety  alerts,  Dear  Healthcare  Provider  letters,  press  releases  and  other  communications

containing warnings or other safety information about the product; or

● injunctions or the imposition of civil or criminal penalties.

The FDA closely regulates the marketing, labeling, advertising and promotion of drug products. A company can
make only those claims relating to safety and efficacy, purity and potency that are approved by the FDA and in accordance
with  the  provisions  of  the  approved  label.  The  FDA  and  other  agencies  actively  enforce  the  laws  and  regulations
prohibiting the promotion of off-label uses. Failure to comply with these requirements can result in, among other things,
adverse  publicity,  warning  letters,  corrective  advertising  and  potential  civil  and  criminal  penalties.  Physicians  may
prescribe, in their independent professional medical judgment, legally available products for uses that are not described in
the product’s labeling and that differ from those tested by us and approved by the FDA. Physicians may believe that such
off-label uses are the best treatment for many patients in varied circumstances. The FDA does not regulate the behavior of
physicians in their choice of treatments. The FDA does, however, restrict manufacturer’s communications on the subject of
off-label use of their products. However, companies may share truthful and not misleading information that is otherwise
consistent with a product’s FDA-approved labelling.

Marketing Exclusivity

Market  exclusivity  provisions  authorized  under  the  FDCA  can  delay  the  submission  or  the  approval  of  certain
marketing  applications.  The  FDCA  provides  a  five-year  period  of  non-patent  marketing  exclusivity  within  the  United
States to the first applicant to obtain approval of an NDA for a new chemical entity. A drug is a new chemical entity if the
FDA  has  not  previously  approved  any  other  new  drug  containing  the  same  active  moiety,  which  is  the  molecule  or  ion
responsible for the action of the drug substance. During the exclusivity period, the FDA may not approve or even accept
for review an abbreviated new drug application (ANDA), or an NDA submitted under Section 505(b)(2) (505(b)(2) NDA),
submitted  by  another  company  for  another  drug  based  on  the  same  active  moiety,  regardless  of  whether  the  drug  is
intended for the same indication as the original innovative drug or for another indication, where the applicant does not own
or have a legal right of reference to all the data required for approval. However, an application may be submitted after four
years if it contains a certification of patent invalidity or non-infringement to one of the patents listed with the FDA by the
innovator NDA holder.

The FDCA alternatively provides three years of marketing exclusivity for an NDA, or supplement to an existing
NDA if new clinical investigations, other than bioavailability studies, that were conducted or sponsored by the applicant
are deemed by the FDA to be essential to the approval of the application, for example new indications, dosages or strengths
of an existing drug. This three-year exclusivity covers only the modification for which the drug received approval on the
basis  of  the  new  clinical  investigations  and  does  not  prohibit  the  FDA  from  approving  ANDAs  or  505(b)(2)  NDAs  for
drugs containing the active agent for the original indication or condition of use. Five-year and three-year exclusivity will
not delay the submission or approval of a full NDA. However, an applicant submitting a full NDA would be required to
conduct or obtain a right of reference to any preclinical studies and adequate and well-controlled clinical trials necessary to
demonstrate safety and effectiveness.

Pediatric exclusivity is another type of marketing exclusivity available in the United States. Pediatric exclusivity
provides  for  an  additional  six  months  of  marketing  exclusivity  attached  to  another  period  of  exclusivity  if  a  sponsor
conducts clinical trials in children in response to a written request from the FDA. The issuance of a written request does not
require the sponsor to undertake the described clinical trials. In addition, orphan drug exclusivity, as described above, may
offer a seven-year period of marketing exclusivity, except in certain circumstances.

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FDA Approval and Regulation of Companion Diagnostics

If safe and effective use of a therapeutic product depends on an in vitro diagnostic medical device, then the FDA
generally will require approval or clearance of that diagnostic, known as an in vitro companion diagnostic device, at the
same time that the FDA approves the therapeutic product. In August 2014, the FDA issued final guidance clarifying the
requirements that will apply to approval of therapeutic products and in vitro companion diagnostic devices. According to
the  guidance,  for  novel  drugs,  an  in  vitro  companion  diagnostic  device  and  its  corresponding  therapeutic  should  be
approved or cleared contemporaneously by the FDA for the use indicated in the therapeutic product’s labeling.

If the FDA determines that an in vitro companion diagnostic device is essential to the safe and effective use of a
novel  therapeutic  product  or  indication,  the  FDA  generally  will  not  approve  the  therapeutic  product  or  new  therapeutic
product indication if the in vitro companion diagnostic device is not approved or cleared for that indication. Approval or
clearance of the in vitro  companion  diagnostic  device  will  ensure  that  the  device  has  been  adequately  evaluated  and  has
adequate performance characteristics in the intended population.

Under the FDCA, in vitro diagnostics, including in vitro companion diagnostic devices, are generally regulated as
medical devices. In the United States, the FDCA and its implementing regulations, and other federal and state statutes and
regulations govern, among other things, medical device design and development, preclinical and clinical testing, premarket
clearance  or  approval,  registration  and  listing,  manufacturing,  labeling,  storage,  advertising  and  promotion,  sales  and
distribution,  export  and  import,  and  post-market  surveillance.  Unless  an  exemption  applies,  diagnostic  tests  require
marketing clearance or approval from the FDA prior to commercial distribution. The two primary types of FDA marketing
authorization  applicable  to  a  medical  device  are  premarket  notification,  also  called  510(k)  clearance,  and  premarket
approval, or PMA approval. The FDA has stated that it generally requires in vitro companion diagnostic devices intended
to select the patients who will respond to a drug to obtain a PMA for that diagnostic simultaneously with approval of the
drug.

The PMA process, including the gathering of clinical and preclinical data and the submission to and review by the
FDA, can take several years or longer. It involves a rigorous premarket review during which the applicant must prepare and
provide the FDA with reasonable assurance of the device’s safety and effectiveness and information about the device and
its components regarding, among other things, device design, manufacturing and labeling. In addition, PMAs for certain
devices  must  generally  include  the  results  from  extensive  preclinical  and  adequate  and  well-controlled  clinical  trials  to
establish the safety and effectiveness of the device for each indication for which FDA approval is sought. In particular, for
a diagnostic, a PMA application typically requires data regarding analytical and clinical validation studies. As part of the
PMA  review,  the  FDA  will  typically  inspect  the  manufacturer’s  facilities  for  compliance  with  the  Quality  System
Regulation, or QSR, which imposes elaborate testing, control, documentation and other quality assurance requirements.

PMA  approval  is  not  guaranteed,  and  the  FDA  may  ultimately  respond  to  a  PMA  submission  with  a  not
approvable determination based on deficiencies in the application and require additional clinical trial or other data that may
be  expensive  and  time-consuming  to  generate  and  that  can  substantially  delay  approval.  If  the  FDA’s  evaluation  of  the
PMA application is favorable, the FDA typically issues an approvable letter requiring the applicant’s agreement to specific
conditions, such as changes in labeling, or specific additional information, such as submission of final labeling, in order to
secure final approval of the PMA. If the FDA’s evaluation of the PMA or manufacturing facilities is not favorable, the FDA
will deny approval of the PMA or issue a not approvable letter. A not approvable letter will outline the deficiencies in the
application  and,  where  practical,  will  identify  what  is  necessary  to  make  the  PMA  approvable.  The  FDA  may  also
determine that additional clinical trials are necessary, in which case the PMA approval may be delayed for several months
or years while the trials are conducted and then the data submitted in an amendment to the PMA. If the FDA concludes that
the applicable criteria have been met, the FDA will issue a PMA for the approved indications, which can be more limited
than  those  originally  sought  by  the  applicant.  The  PMA  can  include  post-approval  conditions  that  the  FDA  believes
necessary  to  ensure  the  safety  and  effectiveness  of  the  device,  including,  among  other  things,  restrictions  on  labeling,
promotion,  sale  and  distribution.  Once  granted,  PMA  approval  may  be  withdrawn  by  the  FDA  if  compliance  with  post
approval requirements, conditions of approval or other regulatory standards are not maintained or problems are identified
following initial marketing.

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After a device is placed on the market, it remains subject to significant regulatory requirements. Medical devices
may be marketed only for the uses and indications for which they are cleared or approved. Device manufacturers must also
establish  registration  and  device  listings  with  the  FDA.  A  medical  device  manufacturer’s  manufacturing  processes  and
those  of  its  suppliers  are  required  to  comply  with  the  applicable  portions  of  the  QSR,  which  cover  the  methods  and
documentation of the design, testing, production, processes, controls, quality assurance, labeling, packaging and shipping
of medical devices. Domestic facility records and manufacturing processes are subject to periodic unscheduled inspections
by the FDA. The FDA also may inspect foreign facilities that export products to the United States.

Regulation of Combination Products in the United States

Certain  product  are  comprised  of  components,  such  as  drug  components  and  device  components,  that  would
normally  be  subject  to  different  regulatory  frameworks  by  the  FDA  and  frequently  regulated  by  different  centers  at  the
FDA. These products are known as combination products. Under the FDCA, the FDA is charged with assigning a center
with primary jurisdiction, or a lead center, for review of a combination product. The determination of which center will be
the lead center is based on the “primary mode of action” of the combination product. Thus, if the primary mode of action of
a drug-device combination product is attributable to the drug product, the FDA center responsible for premarket review of
the drug product would have primary jurisdiction for the combination product. The FDA has also established the Office of
Combination  Products  to  address  issues  surrounding  combination  products  and  provide  more  certainty  to  the  regulatory
review process. That office serves as a focal point for combination product issues for agency reviewers and industry. It is
also  responsible  for  developing  guidance  and  regulations  to  clarify  the  regulation  of  combination  products,  and  for
assignment of the FDA center that has primary jurisdiction for review of combination products where the jurisdiction is
unclear or in dispute. A combination product with a primary mode of action attributable to the drug component generally
would be reviewed and approved pursuant to the drug approval processes set forth in the FDCA. In reviewing the NDA for
such  a  product,  however,  FDA  reviewers  would  consult  with  their  counterparts  in  the  device  center  to  ensure  that  the
device component of the combination product met applicable requirements regarding safety, effectiveness, durability and
performance. In addition, under FDA regulations, combination products are subject to cGMP requirements applicable to
both drugs and devices, including the QSR applicable to medical devices.

Foreign Regulation

In  addition  to  regulations  in  the  United  States,  we  will  be  subject  to  a  variety  of  foreign  regulations  governing
clinical  trials  and  commercial  sales  and  distribution  of  setmelanotide  to  the  extent  we  choose  to  sell  any  setmelanotide
outside of the United States. Whether or not we obtain FDA approval for a product, we must obtain approval of a product
by  equivalent  competent  authorities  in  foreign  jurisdictions  before  we  can  commence  clinical  trials  or  marketing  of  the
product in those countries. The approval process varies from country to country and the time may be longer or shorter than
that required for FDA approval. The requirements governing the conduct of clinical trials, product licensing, pricing and
reimbursement vary greatly from country to country. As in the United States, post-approval regulatory requirements, such
as those regarding product manufacture, marketing, pharmacovigilance, promotion, advertising or distribution would apply
to any product that is approved outside the United States.

Regulation and Procedures Governing Marketing Authorization of Medicinal Products in the European Union

Non-clinical studies and clinical trials

Similarly  to  the  United  States,  the  various  phases  of  non-clinical  and  clinical  research  in  the  EU  are  subject  to

significant regulatory controls.

Non-clinical  studies  are  performed  to  demonstrate  the  health  or  environmental  safety  of  new  biological
substances. Non-clinical studies must be conducted in compliance with the principles of good laboratory practice (GLP) as
set  forth  in  EU  Directive  2004/10/EC.  In  particular,  non-clinical  studies,  both  in  vitro  and  in  vivo,  must  be  planned,
performed, monitored, recorded, reported and archived in accordance with the GLP principles, which define a set of rules
and  criteria  for  a  quality  system  for  the  organizational  process  and  the  conditions  for  non-clinical  studies.  These  GLP
standards reflect the Organization for Economic Co-operation and Development requirements.

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Clinical trials of medicinal products in the EU must be conducted in accordance with EU and national regulations
and  the  International  Conference  on  Harmonization  (ICH)  guidelines  on  good  clinical  practices  (GCP)  as  well  as  the
applicable  regulatory  requirements  and  the  ethical  principles  that  have  their  origin  in  the  Declaration  of  Helsinki.  If  the
sponsor of the clinical trial is not established within the EU, it must appoint an EU entity to act as its legal representative.
The sponsor must take out a clinical trial insurance policy, and in most EU member states, the sponsor is liable to provide
‘no fault’ compensation to any study subject injured in the clinical trial.

The regulatory landscape related to clinical trials in the EU has been subject to recent changes. The EU Clinical
Trials Regulation (CTR), which was adopted in April 2014 and repeals the EU Clinical Trials Directive, became applicable
on  January  31,  2022.  Unlike  directives,  the  CTR  is  directly  applicable  in  all  EU  member  states  without  the  need  for
member  states  to  further  implement  it  into  national  law.  The  CTR  notably  harmonizes  the  assessment  and  supervision
processes for clinical trials throughout the EU via a Clinical Trials Information System, which contains a centralized EU
portal and database.

While  the  Clinical  Trials  Directive  required  a  separate  clinical  trial  application  (CTA)  to  be  submitted  in  each
member state, to both the competent national health authority and an independent ethics committee, much like the FDA
and IRB respectively, the CTR introduces a centralized process and only requires the submission of a single application to
all member states concerned. The CTR allows sponsors to make a single submission to both the competent authority and an
ethics committee in each member state, leading to a single decision per member state. The CTA must include, among other
things,  a  copy  of  the  trial  protocol  and  an  investigational  medicinal  product  dossier  containing  information  about  the
manufacture  and  quality  of  the  medicinal  product  under  investigation.  The  assessment  procedure  of  the  CTA  has  been
harmonized  as  well,  including  a  joint  assessment  by  all  member  states  concerned,  and  a  separate  assessment  by  each
member state with respect to specific requirements related to its own territory, including ethics rules. Each member state’s
decision  is  communicated  to  the  sponsor  via  the  centralized  EU  portal.  Once  the  CTA  is  approved,  clinical  study
development may proceed.

The  CTR  foresees  a  three-year  transition  period.  The  extent  to  which  ongoing  and  new  clinical  trials  will  be
governed by the CTR varies. For clinical trials whose CTA was made under the Clinical Trials Directive before January 31,
2022, the Clinical Trials Directive will continue to apply on a transitional basis for three years. Additionally, sponsors may
still choose to submit a CTA under either the Clinical Trials Directive or the CTR until January 31, 2023 and, if authorized,
those will be governed by the Clinical Trials Directive until January 31, 2025. By that date, all ongoing trials will become
subject to the provisions of the CTR.

Marketing Authorizations

In the EU, medicinal product candidates can only be commercialized after obtaining a marketing authorization, or
MA.  To  obtain  regulatory  approval  of  a  product  candidate  in  the  EU,  we  must  submit  a  marketing  authorization
application, or MAA. The process for doing this depends, among other things, on the nature of the medicinal product.

There are two types of MAs:

● “Centralized MAs” are issued by the European Commission through the centralized procedure, based on the
opinion  of  the  Committee  for  Medicinal  Products  for  Human  Use  (CHMP)  of  the  European  Medicines
Agency (EMA) and are valid throughout the EU. The centralized procedure is mandatory for certain types of
products,  such  as  (i)  medicinal  products  derived  from  biotechnological  processes,  (ii)  designated  orphan
medicinal products, (iii) advanced therapy medicinal products (ATMPs) such as gene therapy, somatic cell-
therapy  or  tissue-engineered  medicines,  and  (iv)  medicinal  products  containing  a  new  active  substance
indicated for the treatment certain diseases, such as HIV/AIDS, cancer, neurodegenerative diseases, diabetes,
auto-immune  and  other  immune  dysfunctions  and  viral  diseases.  The  centralized  procedure  is  optional  for
any products containing a new active substance not yet authorized in the EU, or for products that constitute a
significant therapeutic, scientific or technical innovation or for which the granting of a MA would be in the
interest of public health in the EU.

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● “National MAs” are issued by the competent authorities of the EU member states, only cover their respective
territory, and are available for product candidates not falling within the mandatory scope of the centralized
procedure. Where a product has already been authorized for marketing in an EU member state, this national
MA can be recognized in another member state through the mutual recognition procedure. If the product has
not received a national MA in any member state at the time of application, it can be approved simultaneously
in various member states through the decentralized procedure. Under the decentralized procedure an identical
dossier is submitted to the competent authorities of each of the member states in which the MA is sought, one
of which is selected by the applicant as the reference member state.

A MA has an initial validity for five years in principle. The MA may be renewed after five years on the basis of a
re-evaluation of the risk-benefit balance by the EMA or by the competent authority of the EU member state. To this end,
the  MA  holder  must  provide  the  EMA  or  the  competent  authority  with  a  consolidated  version  of  the  file  in  respect  of
quality, safety and efficacy, including all variations introduced since the MA was granted, at least six months before the
MA ceases to be valid. The European Commission or the competent authorities of the EU member states may decide, on
justified grounds relating to pharmacovigilance, to proceed with one further five year period of MA. Once subsequently
definitively renewed, the MA shall be valid for an unlimited period. Any authorization which is not followed by the actual
placing of the medicinal product on the EU market or on the market of the authorizing EU member state(s) within three
years after authorization ceases to be valid (the so-called “sunset clause”).

Under  the  centralized  procedure,  the  maximum  timeframe  for  the  evaluation  of  an  MAA  by  the  CHMP  is  210
days, excluding clock stops, when additional information or written or oral explanation is to be provided by the applicant in
response to questions of the CHMP. In exceptional cases, the CHMP might perform an accelerated review of a MAA in no
more than 150 days (not including clock stops). Innovative products that target an unmet medical need and are expected to
be of major public health interest may be eligible for a number of expedited development and review programs, such as the
PRIME scheme, which provides incentives similar to the breakthrough therapy designation in the U.S. In March 2016, the
EMA launched an initiative, the Priority Medicines (PRIME) scheme, a voluntary scheme aimed at enhancing the EMA’s
support for the development of medicines that target unmet medical needs. It is based on increased interaction and early
dialogue with companies developing promising medicines, to optimize their product development plans and speed up their
evaluation to help them reach patients earlier. Product developers that benefit from PRIME designation can expect to be
eligible for accelerated assessment but this is not guaranteed. Many benefits accrue to sponsors of product candidates with
PRIME  designation,  including  but  not  limited  to,  early  and  proactive  regulatory  dialogue  with  the  EMA,  frequent
discussions  on  clinical  trial  designs  and  other  development  program  elements,  and  accelerated  MAA  assessment  once  a
dossier  has  been  submitted.  Importantly,  a  dedicated  contact  and  rapporteur  from  the  CHMP  is  appointed  early  in  the
PRIME scheme facilitating increased understanding of the product at EMA’s committee level. An initial meeting initiates
these  relationships  and  includes  a  team  of  multidisciplinary  experts  at  the  EMA  to  provide  guidance  on  the  overall
development and regulatory strategies.

Moreover, in the EU, a “conditional” MA may be granted in cases where all the required safety and efficacy data
are not yet available. The conditional MA is subject to conditions to be fulfilled for generating the missing data or ensuring
increased safety measures. It is valid for one year and has to be renewed annually until fulfillment of all the conditions.
Once the pending studies are provided, it can become a “normal” MA. However, if the conditions are not fulfilled within
the timeframe set by the EMA, the MA ceases to be renewed. Furthermore, MA may also be granted “under exceptional
circumstances”  when  the  applicant  can  show  that  it  is  unable  to  provide  comprehensive  data  on  the  efficacy  and  safety
under  normal  conditions  of  use  even  after  the  product  has  been  authorized  and  subject  to  specific  procedures  being
introduced. This may arise in particular when the intended indications are very rare and, in the present state of scientific
knowledge, it is not possible to provide comprehensive information, or when generating data may be contrary to generally
accepted ethical principles. This MA is close to the conditional MA as it is reserved for medicinal products to be approved
for severe diseases or unmet medical needs and the applicant does not hold the complete data set legally required for the
grant of a MA. However, unlike the conditional MA, the applicant does not have to provide the missing data and will never
have  to.  Although  the  MA  “under  exceptional  circumstances”  is  granted  definitively,  the  risk-benefit  balance  of  the
medicinal product is reviewed annually and the MA is withdrawn in case the risk-benefit ratio is no longer favorable.

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Data and marketing exclusivity

The  EU  also  provides  opportunities  for  market  exclusivity.  Upon  receiving  MA,  reference  product  candidates
generally  receive  eight  years  of  data  exclusivity  and  an  additional  two  years  of  market  exclusivity.  If  granted,  the  data
exclusivity period prevents applicants generic or biosimilar applicants from relying on the pre-clinical and clinical trial data
contained in the dossier of the reference product when applying for a generic or biosimilar MA in the EU during a period
of eight years from the date on which the reference product was first authorized in the EU. During the market exclusivity
period,  an  application  for  a  generic  or  biosimilar  MA  can  be  submitted  and  a  related  MA  may  be  granted,  and  the
innovator’s  data  may  be  referenced,  but  no  generic  or  biosimilar  can  be  placed  on  the  EU  market  until  10  years  have
elapsed from the initial MA of the reference product in the EU. The overall ten-year period can be extended to a maximum
of eleven years if, during the first eight years of those ten years, the MA holder obtains an authorization for one or more
new  therapeutic  indications  which,  during  the  scientific  evaluation  prior  to  their  authorization,  are  held  to  bring  a
significant  clinical  benefit  in  comparison  with  existing  therapies.  However,  there  is  no  guarantee  that  a  product  will  be
considered  by  the  EU’s  regulatory  authorities  to  be  a  new  chemical  entity,  and  products  may  not  qualify  for  data
exclusivity.

Orphan Medicinal Products

The criteria for designating an “orphan medicinal product” in the EU are similar in principle to those in the United
States. Regulation (EC) No. 141/2000, as implemented by Regulation (EC) No. 847/2000 provides that a medicinal product
can be designated as an orphan if its sponsor can establish that: (1) the product is intended for the diagnosis, prevention or
treatment of a life threatening or chronically debilitating condition; (2) either (a) such condition affects not more than five
in ten thousand persons in the EU when the application is made, or (b) the product, without the benefits derived from the
orphan status, would not generate sufficient return in the EU to justify the necessary investment; and (3) there exists no
satisfactory method of diagnosis, prevention or treatment of the condition in question that has been authorized in the EU or,
if such method exists, the medicinal product will be of significant benefit to those affected by that condition.

In  the  EU,  an  application  for  designation  as  an  orphan  product  can  be  made  any  time  prior  to  the  filing  of  the
application  for  MA.  Orphan  drug  designation  entitles  a  party  to  incentives  such  fee  reductions  or  fee  waivers,  protocol
assistance, and access to the centralized procedure. Once authorized, orphan medicinal products are entitled to a ten-years
period  of  market  exclusivity  for  the  approved  therapeutic  indication,  which  means  that  the  competent  authorities  cannot
accept another MAA, or grant a MA, or accept an application to extend a MA for a similar product for the same indication
for  a  period  of  ten  years.  The  period  of  market  exclusivity  is  extended  by  two  years  for  orphan  medicinal  products  that
have  also  complied  with  an  agreed  pediatric  investigation  plan  (PIP).  No  extension  to  any  supplementary  protection
certificate can be granted on the basis of pediatric studies for orphan indications. Orphan drug designation does not convey
any advantage in, or shorten the duration of, the regulatory review and approval process.

The orphan exclusivity period may, however, be reduced to six years if, at the end of the fifth year, it is established
that the product no longer meets the criteria for which it received orphan drug destination, including where it is shown that
the  product  is  sufficiently  profitable  not  to  justify  maintenance  of  market  exclusivity,  or  where  the  prevalence  of  the
condition  has  increased  above  the  threshold.  Granting  of  an  authorization  for  another  similar  orphan  medicinal  product
where  another  product  has  market  exclusivity  can  happen  at  any  time  if:  (i)  the  second  applicant  can  establish  that  its
product, although similar to the authorized product, is safer, more effective or otherwise clinically superior, (ii) inability of
the  applicant    to  supply  sufficient  quantities  of  the  orphan  medicinal  product  or  (iii)  where  the  applicant  consents  to  a
second orphan medicinal product application. A company may voluntarily remove a product from the orphan register.

Pediatric Development

In  the  EU,  MAAs  for  new  medicinal  products  have  to  include  the  results  of  trials  conducted  in  the  pediatric
population, in compliance with a PIP agreed with the EMA’s Pediatric Committee (PDCO). The PIP sets out the timing and
measures  proposed  to  generate  data  to  support  a  pediatric  indication  of  the  drug  for  which  an  MA  is  being  sought.  The
PDCO can grant a deferral of the obligation to implement some or all of the measures of the PIP until there are sufficient
data to demonstrate the efficacy and safety of the product in adults. Further, the obligation to provide pediatric clinical trial
data can be waived by the PDCO when these data are not needed or appropriate because the product is likely to be

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ineffective  or  unsafe  in  children,  the  disease  or  condition  for  which  the  product  is  intended  occurs  only  in  adult
populations, or when the product does not represent a significant therapeutic benefit over existing treatments for pediatric
patients.  Once  the  MA  is  obtained  in  all  member  states  and  study  results  are  included  in  the  product  information,  even
when negative, the product is eligible for a six-months supplementary protection certificate extension (if any is in effect at
the  time  of  approval)  or,  in  the  case  of  orphan  pharmaceutical  products,  a  two  year  extension  of  the  orphan  market
exclusivity is granted.

Post-Approval Requirements

Similar  to  the  United  States,  both  MA  holders  and  manufacturers  of  medicinal  products  are  subject  to
comprehensive regulatory oversight by the EMA, the European Commission and/or the competent regulatory authorities of
the member states. The holder of a MA must establish and maintain a pharmacovigilance system and appoint an individual
qualified person for pharmacovigilance who is responsible for oversight of that system. Key obligations include expedited
reporting of suspected serious adverse reactions and submission of periodic safety update reports (PSURs).

All  new  MAA  must  include  a  risk  management  plan  (RMP)  describing  the  risk  management  system  that  the
company will put in place and documenting measures to prevent or minimize the risks associated with the product. The
regulatory authorities may also impose specific obligations as a condition of the MA. Such risk-minimization measures or
post-authorization  obligations  may  include  additional  safety  monitoring,  more  frequent  submission  of  PSURs,  or  the
conduct of additional clinical trials or post-authorization safety studies.

The advertising and promotion of medicinal products is also subject to laws concerning promotion of medicinal
products,  interactions  with  physicians,  misleading  and  comparative  advertising  and  unfair  commercial  practices.  All
advertising  and  promotional  activities  for  the  product  must  be  consistent  with  the  approved  summary  of  product
characteristics,  and  therefore  all  off-label  promotion  is  prohibited.  Direct-to-consumer  advertising  of  prescription
medicines is also prohibited in the EU. Although general requirements for advertising and promotion of medicinal products
are established under EU directives, the details are governed by regulations in each member state and can differ from one
country to another.

The aforementioned EU rules are generally applicable in the European Economic Area (EEA) which consists of

the 27 EU member states plus Norway, Liechtenstein and Iceland.

Failure  to  comply  with  EU  and  member  state  laws  that  apply  to  the  conduct  of  clinical  trials,  manufacturing
approval, MA of medicinal products and marketing of such products, both before and after grant of the MA, manufacturing
of  pharmaceutical  products,  statutory  health  insurance,  bribery  and  anti-corruption  or  with  other  applicable  regulatory
requirements  may  result  in  administrative,  civil  or  criminal  penalties.  These  penalties  could  include  delays  or  refusal  to
authorize  the  conduct  of  clinical  trials,  or  to  grant  MA,  product  withdrawals  and  recalls,  product  seizures,  suspension,
withdrawal or variation of the MA, total or partial suspension of production, distribution, manufacturing or clinical trials,
operating restrictions, injunctions, suspension of licenses, fines and criminal penalties.

Brexit and the Regulatory Framework in the United Kingdom

The  United  Kingdom  (UK)  left  the  EU  on  January  31,  2020,  following  which  existing  EU  medicinal  product
legislation continued to apply in the UK during the transition period under the terms of the EU-UK Withdrawal Agreement.
The transition period, which ended on December 31, 2020, maintained access to the EU single market and to the global
trade  deals  negotiated  by  the  EU  on  behalf  of  its  members.  The  transition  period  provided  time  for  the  UK  and  EU  to
negotiate a framework for partnership for the future, which was then crystallized in the Trade and Cooperation Agreement
(TCA) and became effective on the January 1, 2021. The TCA includes specific provisions concerning pharmaceuticals,
which  include  the  mutual  recognition  of  GMP  inspections  of  manufacturing  facilities  for  medicinal  products  and  GMP
documents issued, but does not foresee wholesale mutual recognition of UK and EU pharmaceutical regulations.

EU  laws  which  have  been  transposed  into  UK  law  through  secondary  legislation  continue  to  be  applicable  as
“retained EU law”. However, new legislation such as the EU CTR or in relation to orphan medicines will not be applicable.
The UK government has passed a new Medicines and Medical Devices Act 2021, which introduces delegated powers in

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favour of the Secretary of State or an ‘appropriate authority’ to amend or supplement existing regulations in the area of
medicinal  products  and  medical  devices.  This  allows  new  rules  to  be  introduced  in  the  future  by  way  of  secondary
legislation,  which  aims  to  allow  flexibility  in  addressing  regulatory  gaps  and  future  changes  in  the  fields  of  human
medicines, clinical trials and medical devices.

As  of  January  1,  2021,  the  Medicines  and  Healthcare  products  Regulatory  Agency  (MHRA)  is  the  UK’s
standalone medicines and medical devices regulator. As a result of the Northern Ireland protocol, different rules will apply
in  Northern  Ireland  than  in  England,  Wales,  and  Scotland,  together,  Great  Britain  (GB);  broadly,  Northern  Ireland  will
continue to follow the EU regulatory regime, but its national competent authority will remain the MHRA. The MHRA has
published  a  guidance  on  how  various  aspects  of  the  UK  regulatory  regime  for  medicines  will  operate  in  GB  and  in
Northern Ireland following the expiry of the Brexit transition period on December 31, 2020. The guidance includes clinical
trials, importing, exporting, and pharmacovigilance and is relevant to any business involved in the research, development,
or commercialization of medicines in the UK. The new guidance was given effect via the Human Medicines Regulations
(Amendment etc.) (EU Exit) Regulations 2019 (the Exit Regulations).

The MHRA has introduced changes to national licensing procedures, including procedures to prioritize access to
new medicines that will benefit patients, including a 150-day assessment and a rolling review procedure. All existing EU
MAs  for  centrally  authorized  products  were  automatically  converted  or  grandfathered  into  UK  MAs,  effective  in  GB
(only), free of charge on January 1, 2021, unless the MA holder chooses to opt-out. After Brexit, companies established in
the UK cannot use the centralized procedure and instead must follow one of the UK national authorization procedures or
one of the remaining post-Brexit international cooperation procedures to obtain an MA to commercialize products in the
UK.  The  MHRA  may  rely  on  a  decision  taken  by  the  European  Commission  on  the  approval  of  a  new  (centralized
procedure)  MA  when  determining  an  application  for  a  GB  authorization;  or  use  the  MHRA’s  decentralized  or  mutual
recognition  procedures  which  enable  MAs  approved  in  EU  member  states  (or  Iceland,  Liechtenstein,  Norway)  to  be
granted in GB.

Additionally,  an  MHRA  public  consultation  on  the  post-Brexit  regulatory  framework  for  medical  devices  and
diagnostics was opened until end of November 2021. MHRA seeks to amend the UK Medical Devices Regulations 2002
(which are based on EU legislation, primarily the EU Medical Devices Directive and the EU In Vitro Diagnostic Medical
Devices Directive), in particular to create new access pathways to support innovation, create an innovative framework for
regulating  software  and  artificial  intelligence  as    medical  devices,  reform  in vitro  diagnostic  medical  devices  regulation,
and foster sustainability through the reuse and remanufacture of medical devices. The new regime is expected to come into
force  in  July  2023,  coinciding  with  the  end  of  the  acceptance  period  for  EU  CE  marks  in  Great  Britain,  subject  to
appropriate transitional arrangements.

Regulation of Combination Products in the European Union

The  EU  regulates  medical  devices  and  medicinal  products  separately,  through  different  legislative  instruments,
and  the  applicable  requirements  will  vary  depending  on  the  type  of  drug-device  combination  product.  EU  guidance  has
been published to help manufacturers select the right regulatory framework.

Drug-delivery  products  intended  to  administer  a  medicinal  product  where  the  medicinal  product  and  the  device
form a single integral product are regulated as medicinal products in the EU. The EMA is responsible for evaluating the
quality, safety and efficacy of MAAs submitted through the centralized procedure, including the safety and performance of
the medical device in relation to its use with the medicinal product. The EMA or the EU member state national competent
authority will assess the product in accordance with the rules for medicinal products described above but the device part
must  comply  with  the  EU  Medical  Devices  Regulation  (including  the  general  safety  and  performance  requirements
provided in Annex I). MAA must include – where available – the results of the assessment of the conformity of the device
part with the Medical Devices Regulation contained in the manufacturer’s EU declaration of conformity of the device or
the relevant certificate issued by a notified body. If the MAA does not include the results of the conformity assessment and
where for the conformity assessment of the device, if used separately, the involvement of a notified body is required, the
competent authority must require the applicant to provide a notified body opinion on the conformity of the device.

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By contrast, in case of drug-delivery products intended to administer a medicinal product where the device and the
medicinal product do not form a single integral product (but are e.g. co-packaged), the medicinal product is regulated in
accordance with the rules for medicinal products described above while the device part is regulated as a medical device and
will  have  to  comply  with  all  the  requirements  set  forth  by  the  Medical  Devices  Regulation.  The  characteristics  of  non-
integral devices used for the administration of medicinal products may impact the quality, safety and efficacy profile of the
medicinal products. To the extent that administration devices are co-packaged with the medicinal product or, in exceptional
cases, where the use of a specific type of administration device is specifically provided for in the product information of
the  medicinal  product,  additional  information  may  need  to  be  provided  in  the  MAA  for  the  medicinal  product  on  the
characteristics of the medical device(s) that may impact on the quality, safety and/or efficacy of the medicinal product.

The  requirements  regarding  quality  documentation  for  medicinal  products  when  used  with  a  medical  device,
including  single  integral  products,  co-packaged  and  referenced  products,  are  outlined  in  the  EMA  guideline  of  July  22,
2021, which became effective on January 1, 2022.

The aforementioned EU rules are generally applicable in the EEA.

Regulation of Companion Diagnostics in the European Union

In the EU, in vitro diagnostic medical devices are regulated by Directive 98/79/EC (IVDD) which regulates the
placing on the market, the CE marking, the essential requirements, the conformity assessment procedures, the registration
obligations  for  manufactures  and  devices  as  well  as  the  vigilance  procedure.  In  vitro  diagnostic  medical  devices  must
comply with the requirements provided for in the Directive, and with further requirements implemented at national level
(as the case may be).

The  regulation  of  companion  diagnostics  will  be  subject  to  further  requirements  once  the  in-vitro  diagnostic
medical devices Regulation No 2017/746 (IVDR) will become applicable on May 26, 2022. However on October 14, 2021,
the European Commission proposed a “progressive” roll-out of the IVDR to prevent disruption in the supply of in  vitro
diagnostic medical devices. The European Parliament and Council adopted the proposed regulation on December 15, 2021.
The IVDR will fully apply on May 26, 2022 but there will be a tiered system extending the grace period for many devices
(depending on their risk classification) before they have to be fully compliant with the regulation.

The IVDR introduces a new classification system for companion diagnostics which are now specifically defined
as diagnostic tests that support the safe and effective use of a specific medicinal product, by identifying patients that are
suitable  or  unsuitable  for  treatment.  Companion  diagnostics  will  have  to  undergo  a  conformity  assessment  by  a  notified
body. Before it can issue a CE certificate, the notified body must seek a scientific opinion from the EMA on the suitability
of the companion diagnostic to the medicinal product concerned if the medicinal product falls exclusively within the scope
of the centralized procedure for the authorization of medicines, or the medicinal product is already authorized through the
centralized procedure, or a MAA for the medicinal product has been submitted through the centralized procedure. For other
substances, the notified body can seek the opinion from a national competent authorities or the EMA.

The aforementioned EU rules are generally applicable in the EEA.

Pharmaceutical Coverage and Reimbursement

In the United States and markets in other countries, patients who are prescribed treatments for their conditions and
providers performing the prescribed services generally rely on Government and third-party payors to reimburse all or part
of the associated healthcare costs. Patients are unlikely to use IMCIVREE unless coverage is provided and reimbursement
is adequate to cover a significant portion of the cost of our products. Significant uncertainty exists as to the coverage and
reimbursement status of products approved by the FDA and other government authorities. Sales will depend, in part, on the
extent  to  which  third-party  payors,  including  government  health  programs  in  the  United  States  such  as  Medicare  and
Medicaid,  commercial  health  insurers  and  managed  care  organizations,  provide  coverage,  and  establish  adequate
reimbursement levels for, IMCIVREE and other product candidates we may develop and obtain approval for in the future.
The process for determining whether a payor will provide coverage for a product may be separate from the

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process  for  setting  the  price  or  reimbursement  rate  that  the  payor  will  pay  for  the  product  once  coverage  is  approved.
Third-party  payors  are  increasingly  challenging  the  prices  charged,  examining  the  medical  necessity,  and  reviewing  the
cost-effectiveness of medical products and services and imposing controls to manage costs. Third-party payors may limit
coverage to specific products on an approved list, also known as a formulary, which might not include all of the approved
products for a particular indication.

In order to secure coverage and reimbursement for any product that might be approved for sale, a company may
need to conduct expensive pharmacoeconomic studies in order to demonstrate the medical necessity and cost-effectiveness
of  the  product,  in  addition  to  the  costs  required  to  obtain  FDA  or  other  comparable  marketing  approvals.  Nonetheless,
setmelanotide may not be considered medically necessary or cost effective. A decision by a third-party payor not to cover
IMCIVREE or any of our product candidates, if approved, could reduce physician utilization of our products and have a
material  adverse  effect  on  our  sales,  results  of  operations  and  financial  condition.  Additionally,  a  payor’s  decision  to
provide coverage for a product does not imply that an adequate reimbursement rate will be approved. Further, one payor’s
determination  to  provide  coverage  for  a  product  does  not  assure  that  other  payors  will  also  provide  coverage  and
reimbursement for the product, and the level of coverage and reimbursement can differ significantly from payor to payor.
Third-party reimbursement and coverage may not be available to enable us to maintain price levels sufficient to realize an
appropriate return on our investment in product development.

The containment of healthcare costs also has become a priority of federal, state and foreign governments and the
prices  of  products  have  been  a  focus  in  this  effort.  Governments  have  shown  significant  interest  in  implementing  cost-
containment programs, including price controls, restrictions on reimbursement and requirements for substitution of generic
products.  Adoption  of  price  controls  and  cost-containment  measures,  and  adoption  of  more  restrictive  policies  in
jurisdictions with existing controls and measures, could further limit a company’s revenue generated from the sale of any
approved  products.  Coverage  policies  and  third-party  reimbursement  rates  may  change  at  any  time.  Even  if  favorable
coverage and reimbursement status is attained for one or more products for which a company or its collaborators receive
marketing approval, less favorable coverage policies and reimbursement rates may be implemented in the future.

Outside  the  United  States,  ensuring  adequate  coverage  and  payment  for  setmelanotide  will  face  challenges.
Pricing  of  prescription  pharmaceuticals  is  subject  to  governmental  control  in  many  countries.  Pricing  negotiations  with
governmental  authorities  can  extend  well  beyond  the  receipt  of  regulatory  marketing  approval  for  a  product  and  may
require us to conduct a clinical trial that compares the cost effectiveness of setmelanotide or products to other available
therapies. The conduct of such a clinical trial could be expensive and result in delays in our commercialization efforts.

In  the  EU,  pricing  and  reimbursement  schemes  vary  widely  from  one  member  state  to  another.  Some  member
states  may  require  the  completion  of  additional  studies  that  compare  the  cost-effectiveness  of  a  particular  medicinal
product candidate to currently available therapies or so called Health Technology Assessments (HTA), in order to obtain
reimbursement  or  pricing  approval.  For  example,  the  EU  provides  options  for  its  member  states  to  restrict  the  range  of
products for which their national health insurance systems provide reimbursement and to control the prices of medicinal
products for human use. EU member states may approve a specific price for a product or it may instead adopt a system of
direct or indirect controls on the profitability of the company placing the product on the market. Other EU member states
allow companies to fix their own prices for products, but monitor and control prescription volumes and issue guidance to
physicians  to  limit  prescriptions.  The  downward  pressure  on  healthcare  costs  in  general,  and  particularly  in  relation  to
prescription only medicinal products, has become more intense. As a result, increasingly high barriers are being erected to
the entry of new products.

HTA of medicinal products is, however, becoming an increasingly common part of the pricing and reimbursement
procedures in some EU member states, including France, Germany, Ireland, Italy, Spain and Sweden. HTA is the procedure
according to which the assessment of the public health impact, therapeutic impact and the economic and societal impact of
use of a given medicinal product in the national healthcare systems of the individual country is conducted. HTA generally
focuses on the clinical efficacy and effectiveness, safety, cost, and cost-effectiveness of individual medicinal products as
well  as  their  potential  implications  for  the  healthcare  system.  Those  elements  of  medicinal  products  are  compared  with
other  treatment  options  available  on  the  market.  The  outcome  of  HTA  regarding  specific  medicinal  products  will  often
influence  the  pricing  and  reimbursement  status  granted  to  these  medicinal  products  by  the  competent  authorities  of
individual EU member states. The extent to which pricing and reimbursement decisions are influenced by

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the  HTA  of  the  specific  medicinal  product  varies  between  EU  member  states.  In  addition,  pursuant  to  Directive
2011/24/EU on the application of patients’ rights in cross-border healthcare, a voluntary network of national authorities or
bodies responsible for HTA in the individual EU member states was established. The purpose of the network is to facilitate
and support the exchange of scientific information concerning HTAs. This may lead to harmonization of the criteria taken
into  account  in  the  conduct  of  HTAs  between  EU  member  states  and  in  pricing  and  reimbursement  decisions  and  may
negatively affect price in at least some EU member states.

On  January  15,  2021,  Regulation  No  2021/2282  on  HTA,  amending  Directive  2011/24/EU,  was  adopted.  This
regulation  intends  to  boost  cooperation  among  EU  member  states  in  assessing  health  technologies,  including  new
medicinal products, and providing the basis for cooperation at the EU level for joint clinical assessments in these areas.
The  regulation  foresees  a  three-year  transitional  period  and  will  permit  EU  member  states  to  use  common  HTA  tools,
methodologies, and procedures across the EU, working together in four main areas, including joint clinical assessment of
the  innovative  health  technologies  with  the  most  potential  impact  for  patients,  joint  scientific  consultations  whereby
developers  can  seek  advice  from  HTA  authorities,  identification  of  emerging  health  technologies  to  identify  promising
technologies early, and continuing voluntary cooperation in other areas. Individual EU member states will continue to be
responsible for assessing non-clinical (e.g., economic, social, ethical) aspects of health technology, and making decisions
on pricing and reimbursement.

Healthcare Laws and Regulations

We  are  subject  to  healthcare  regulation  and  enforcement  by  the  federal  government  and  the  states  where  we
conduct business. These laws include, without limitation, state and federal anti-kickback, fraud and abuse, false claims, and
physician  and  other  healthcare  provider  payment  transparency  laws  and  regulations.  Foreign  governments  also  have
comparable regulations.

The  federal  Anti-Kickback  Statute  prohibits,  among  other  things,  any  person  from  knowingly  and  willfully
offering, soliciting, receiving or providing remuneration, directly or indirectly, to induce either the referral of an individual,
for an item or service or the purchasing or ordering of a good or service, for which payment may be made under federal
healthcare  programs  such  as  the  Medicare  and  Medicaid  programs.  The  Anti-Kickback  Statute  is  subject  to  evolving
interpretations.  In  the  past,  the  government  has  enforced  the  Anti-Kickback  Statute  to  reach  large  settlements  with
healthcare  companies  based  on  sham  consulting  and  other  financial  arrangements  with  physicians.  Further,  a  person  or
entity  does  not  need  to  have  actual  knowledge  of  these  statutes  or  specific  intent  to  violate  them  to  have  committed  a
violation. The majority of states also have anti-kickback laws which establish similar prohibitions and in some cases may
apply to items or services reimbursed by any third-party payor, including commercial insurers.

Additionally,  the  civil  False  Claims  Act  prohibits  knowingly  presenting  or  causing  the  presentation  of  a  false,
fictitious or fraudulent claim for payment to the U.S. government. Actions under the False Claims Act may be brought by
the  Attorney  General  or  as  a  qui  tam  action  by  a  private  individual  in  the  name  of  the  government.  In  addition,  the
government  may  assert  that  a  claim  including  items  or  services  resulting  from  a  violation  of  the  federal  Anti-Kickback
Statute constitutes a false or fraudulent claim for purposes of the federal False Claims Act. Violations of the False Claims
Act can result in very significant monetary penalties and treble damages. The federal government is using the False Claims
Act,  and  the  accompanying  threat  of  significant  liability,  in  its  investigation  and  prosecution  of  pharmaceutical  and
biotechnology companies in connection with the promotion of products for unapproved uses and other sales and marketing
practices.  The  government  has  obtained  multi-billion  dollar  settlements  under  the  False  Claims  Act  in  addition  to
individual criminal convictions under applicable criminal statutes. We expect that the government will continue to devote
substantial resources to investigating healthcare providers’ and manufacturers’ compliance with applicable fraud and abuse
laws.

The federal Health Insurance Portability and Accountability Act of 1996, or HIPAA, created new federal criminal
statutes that prohibit, among other things, knowingly and willfully executing a scheme to defraud any healthcare benefit
program and making false statements relating to healthcare matters. Similar to the federal Anti-Kickback Statute, a person
or entity does not need to have actual knowledge of these statutes or specific intent to violate them to have committed a
violation.

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The federal civil monetary penalties laws, impose civil fines for, among other things, the offering or transfer of
remuneration  to  a  Medicare  or  state  healthcare  program  beneficiary  if  the  person  knows  or  should  know  it  is  likely  to
influence the beneficiary’s selection of a particular provider, practitioner, or supplier of services reimbursable by Medicare
or a state healthcare program, unless an exception applies.

In  addition,  there  has  been  increased  federal  and  state  regulation  of  payments  made  to  physicians  and  other
healthcare providers. The Physician Payments Sunshine Act imposes new reporting requirements on drug manufacturers
for payments made by them to physicians (defined to include doctors, dentists, optometrists, podiatrists and chiropractors),
certain non-physician practitioners (physician assistants, nurse practitioners, clinical nurse specialists, certified registered
nurse  anesthetists,  anesthesiology  assistants,  and  certified  nurse  midwives)  and  teaching  hospitals,  as  well  as  ownership
and  investment  interests  held  by  physicians  and  their  immediate  family  members.  Drug  manufacturers  must  report  such
payments to the government by the 90th day of each calendar year.

State and foreign laws and regulations restrict business practices in the pharmaceutical industry and complicate
our  compliance  efforts.  For  example,  some  states  require  companies  to  comply  with  the  pharmaceutical  industry’s
voluntary  compliance  guidelines  and  the  federal  government’s  compliance  guidance  or  otherwise  restrict  payments  to
healthcare  providers  and  other  potential  referral  sources.  Some  states  require  manufacturers  to  file  reports  relating  to
pricing  and  marketing  information.  Some  state  and  local  governments  require  the  public  registration  of  pharmaceutical
sales representatives. Certain states also mandate implementation of commercial compliance programs, impose restrictions
on  drug  manufacturer  marketing  practices  and/or  require  the  tracking  and  reporting  of  gifts,  compensation  and  other
remuneration to physicians.

Violation of any of such laws or any other governmental regulations that may apply to drug manufacturers may
result  in  penalties,  including,  without  limitation,  civil  and  criminal  penalties,  damages,  fines,  the  curtailment  or
restructuring of our operations, exclusion from participation in federal and state healthcare programs and imprisonment.

In  the  EU,  interactions  between  pharmaceutical  companies  and  physicians  are  also  governed  by  strict  laws,
regulations, industry self-regulation codes of conduct and physicians’ codes of professional conduct in the individual EU
member  states.  The  provision  of  benefits  or  advantages  to  physicians  to  induce  or  encourage  the  prescription,
recommendation, endorsement, purchase, supply, order or use of medicinal products is prohibited in the EU. The provision
of benefits or advantages to physicians is also governed by national laws (including anti-bribery laws) of the EU member
states. In the UK, the UK Bribery Act 2010 applies to any company incorporated in or “carrying on business”, irrespective
of  where  in  the  world  the  alleged  bribery  activity  occurs.  This  Act  could  have  implications  for  our  interactions  with
physicians in and outside the UK. Violation of these laws could result in substantial fines and imprisonment.

Payments made to physicians in certain EU member states must be publicly disclosed. Moreover, agreements with
physicians  must  often  be  the  subject  of  prior  notification  and/or  approval  by  the  physician’s  employer,  their  competent
professional  organization,  and/or  the  competent  authorities  of  the  individual  EU  member  states.  These  requirements  are
provided in the national laws, industry codes, or professional codes of conduct, applicable in the individual EU member
states.  Failure  to  comply  with  these  requirements  could  result  in  reputational  risk,  public  reprimands,  administrative
penalties, fines or imprisonment.

Failure to comply with the EU legislation and national laws on medicinal products including on the promotion of
medicinal products, interactions with physicians, misleading and comparative advertising and unfair commercial practices,
statutory  health  insurance,  bribery  and  anti-corruption  or  with  other  applicable  regulatory  requirements  can  result  in
enforcement  action  by  the  EU  member  state  authorities,  which  may  include  any  of  the  following:  fines,  imprisonment,
orders forfeiting products or prohibiting or suspending their supply to the market, or requiring the manufacturer to issue
public warnings, or to conduct a product recall.

Data Privacy and Security

Numerous  federal,  state  and  foreign  laws  and  regulations  also  govern  the  privacy  and  security  of  health
information and the collection, use, disclosure, and protection of health-related and other personal information, including
state data breach notification laws, state health information and/or genetic privacy laws, and federal and state consumer

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protection laws, such as Section 5 of the FTC Act, many of which differ from each other in significant ways and often are
not  preempted  by  HIPAA,  thus  complicating  compliance  efforts.  Compliance  with  these  laws  is  difficult,  constantly
evolving, and time consuming, and companies that do not comply with these state laws may face significant penalties.

For example, HIPAA, as amended by the Health Information Technology for Economic and Clinical Health, and
the  regulations  implemented  thereunder,  or  collectively,  HIPAA,  imposes  obligations  with  respect  to  safeguarding  the
privacy, security and transmission of individually identifiable health information. We may obtain health information from
third parties (including research institutions from which we obtain clinical trial data) that are subject to privacy and security
requirements under HIPAA. Although we are not directly subject to HIPAA – other than with respect to providing certain
employee  benefits  –  we  could  potentially  be  subject  to  criminal  penalties  if  we,  our  affiliates,  or  our  agents  knowingly
obtain, use, or disclose individually identifiable health information maintained by a HIPAA-covered entity in a manner that
is not authorized or permitted by HIPAA. Further, in California, the California Consumer Privacy Act, or the CCPA, took
effect on January 1, 2020. The CCPA establishes certain requirements for data use and sharing transparency and creates
new data privacy rights for consumers. The California Privacy Rights Act, or CPRA, was also recently voted into law by
California  residents.  The  CPRA  significantly  amends  the  CCPA,  and  imposes  additional  data  protection  obligations  on
covered companies doing business in California, including additional consumer rights processes and opt outs for certain
uses of sensitive data. It also creates a new California data protection agency specifically tasked to enforce the law, which
will likely result in increased regulatory scrutiny of California businesses in the areas of data protection and security. The
substantive  requirements  for  businesses  subject  to  the  CPRA  will  go  into  effect  on  January  1,  2023,  and  become
enforceable on July 1, 2023. Similarly, there are a number of legislative proposals at both the federal and state level, as well
in the EU and other jurisdictions that could impose new obligations or limitations in areas affecting our business. These
laws and regulations, as well as any associated claims, inquiries or investigations or any other government actions may lead
to  unfavorable  outcomes,  including  increased  compliance  costs,  delays  or  impediments  in  the  development  of  new
products, negative publicity, increased operating costs, diversion of management time and attention, fines, and demands or
orders that we modify or cease existing business practices.

The  EU,  UK,  Switzerland  and  other  countries  have  also  adopted  data  protection  laws  and  regulations,  which
impose significant compliance obligations. In the EEA, the collection and use of personal data (including health data) is
governed by the provisions of the General Data Protection Regulation (GDPR). From January 1, 2021, we are also subject
to  the  UK  data  protection  regime,  consisting  primarily  of  the  UK  General  Data  Protection  Regulation  and  the  UK  Data
Protection  Act  2018  (together,  the  “UK  GDPR”),  which  retains  in  large  part  the  GDPR  in  UK  national  law  following
Brexit.  The  GDPR,  together  with  the  UK  GDPR,  imposes  a  strict  data  protection  compliance  regime  in  relation  to  our
collection, control, processing, sharing, disclosure and other use of data relating to identifiable living individuals (“personal
data”) within the EEA and/or UK. Fines for certain breaches of the GDPR and the UK GDPR are significant, up to the
greater  of  (i)  20  million  Euros  (for  the  GDPR)  and  17.5  million  pounds  (for  the  UK  GDPR),  or  (ii)  4  %  of  total  global
annual turnover. In addition to the foregoing, a breach of the GDPR or UK GDPR could result in regulatory investigations,
reputational damage, orders to cease/change our processing of data, enforcement notices, and/or assessment notices (for a
compulsory  audit).  We  may  also  face  civil  claims  including  representative  actions  and  other  class  action  type  litigation
(where individuals have suffered harm), potentially amounting to significant compensation or damages liabilities, as well
as associated costs, diversion of internal resources, and reputational harm.

The GDPR, together with the national legislation of the EEA member states governing the processing of personal
data, and the UK GDPR impose strict obligations and restrictions on the ability to collect, analyze and transfer personal
data, including health data from clinical trials and AE reporting. In particular, these obligations and restrictions concern the
consent of the individuals to whom the personal data relates, the information provided to the individuals, the transfer of
personal data out of the EEA and the UK, security breach notifications, security and confidentiality of the personal data,
and  imposition  of  substantial  potential  fines  for  breaches  of  the  data  protection  obligations.  Data  protection  authorities
from  the  different  EEA  member  states  may  interpret  the  GDPR  and  national  laws  differently  and  impose  additional
requirements,  including  in  relation  to  health  data,  which  add  to  the  complexity  of  processing  personal  data  in  the  EEA.
Guidance on implementation and compliance practices are often updated or otherwise revised.

With respect to the transfers of personal data out of the EEA and the UK, the GDPR and the UK GDPR provide
that  the  transfers  of  personal  data  to  countries  that  are  not  considered  to  provide  an  adequate  level  of  data  protection,
including the United States, are permitted only on the basis of complying with specific legal steps, a number of which are

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subject  to  legal  challenges.  Most  recently,  on  July  16,  2020,  the  Court  of  Justice  of  the  European  Union  (“CJEU”)
invalidated the EU-US Privacy Shield Framework (“Privacy Shield”) under which personal data could be transferred from
the EEA to US entities who had self-certified under the Privacy Shield scheme. While the CJEU upheld the adequacy of an
alternative  mechanism,  the  standard  contractual  clauses  (a  standard  form  of  contract  approved  by  the  European
Commission  as  an  adequate  personal  data  transfer  mechanism),  it  made  clear  that  reliance  on  them  alone  may  not
necessarily be sufficient to enable data transfers in all circumstances. Use of the standard contractual clauses must now be
assessed  on  a  case-by-case  basis  taking  into  account  the  legal  regime  applicable  in  the  destination  country,  in  particular
applicable surveillance laws and rights of individuals and  additional measures and/or contractual provisions may need to
be  put  in  place,  however,  the  nature  of  these  additional  measures  is  currently  uncertain.  Additionally,  the  European
Commission has published revised standard contractual clauses for data transfers from the EEA: the revised clauses must
be used for relevant new data transfers from September 27, 2021; existing standard contractual clauses arrangements must
be  migrated  to  the  revised  clauses  by  December  27,  2022.  The  revised  standard  contractual  clauses  apply  only  to  the
transfer  of  personal  data  outside  of  the  EEA  and  not  the  UK;  the  UK’s  Information  Commissioner’s  Office  launched  a
public consultation on its draft revised data transfers mechanisms in August 2021. These recent developments may require
us to review and amend the legal mechanisms by which we make and/ or receive personal data transfers to/ in the U.S. As
supervisory  authorities  issue  further  guidance  on  personal  data  export  mechanisms,  including  circumstances  where  the
standard  contractual  clauses  cannot  be  used,  and/or  start  taking  enforcement  action,  we  could  suffer  additional  costs,
complaints and/or regulatory investigations or fines, and/or if we are otherwise unable to transfer personal data between
and among countries and regions in which we operate, it could affect the manner in which we provide our services, the
geographical  location  or  segregation  of  our  relevant  systems  and  operations,  and  could  adversely  affect  our  financial
results.

Healthcare Reform

A  primary  trend  in  the  United  States  healthcare  industry  and  elsewhere  is  cost  containment.  There  have  been  a
number  of  federal  and  state  proposals  during  the  last  few  years  regarding  the  pricing  of  pharmaceutical  and
biopharmaceutical  products,  limiting  coverage  and  reimbursement  for  drugs  and  other  medical  products,  government
control and other changes to the healthcare system in the United States.

By way of example, the United States and state governments continue to propose and pass legislation designed to
reduce  the  cost  of  healthcare.  In  March  2010,  the  Patient  Protection  and  Affordable  Care  Act,  or  signed  the  ACA,  was
signed into law, which, among other things, included changes to the coverage and payment for products under government
health care programs. Among the provisions of the ACA of importance to IMCIVREE and our potential drug candidates
are:

● an annual, nondeductible fee on any entity that manufactures or imports specified branded prescription drugs
and biologic agents, apportioned among these entities according to their market share in certain government
healthcare programs, although this fee does not apply to sales of certain products approved exclusively for
orphan indications;

● expansion  of  eligibility  criteria  for  Medicaid  programs  by,  among  other  things,  allowing  states  to  offer
Medicaid coverage to certain individuals with income at or below 133% of the federal poverty level, thereby
potentially increasing a manufacturer’s Medicaid rebate liability;

● expansion  of  manufacturers’  rebate  liability  under  the  Medicaid  Drug  Rebate  Program  by  increasing  the
minimum  rebate  for  both  branded  and  generic  drugs  and  revising  the  definition  of  “average  manufacturer
price,”  or  AMP,  for  calculating  and  reporting  Medicaid  drug  rebates  on  outpatient  prescription  drug  prices
and extending rebate liability to prescriptions for individuals enrolled in Medicaid managed care plans;

● introduction  of  a  price  reporting  requirement  for  drugs  that  are  inhaled,  instilled,  implanted,  injected,  or

infused and not generally dispensed through retail community pharmacies;

● expansion of the list of entity types eligible for participation in the Public Health Service 340B drug pricing
program, or the 340B program, to include certain free-standing cancer hospitals, critical access hospitals,

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rural  referral  centers,  and  sole  community  hospitals,  but  exempting  “orphan  drugs”  from  the  340B  ceiling
price requirements for these covered entities;

● established the Medicare Part D coverage gap discount program by requiring manufacturers to provide a 70%
point-of-sale-discount off the negotiated price of applicable brand drugs to eligible beneficiaries during their
coverage gap period as a condition for the manufacturers’ outpatient drugs to be covered under Medicare Part
D;

● a  new  Patient-Centered  Outcomes  Research  Institute  to  oversee,  identify  priorities  in,  and  conduct

comparative clinical effectiveness research, along with funding for such research; and

● established  the  Center  for  Medicare  and  Medicaid  Innovation  within  CMS  to  test  innovative  payment  and
service  delivery  models  to  lower  Medicare  and  Medicaid  spending,  potentially  including  prescription  drug
spending.

Since  its  enactment,  there  have  been  judicial,  executive  and  Congressional  challenges  to  certain  aspects  of  the
ACA.  On  June  17,  2021,  the  U.S.  Supreme  Court  dismissed  the  most  recent  judicial  challenge  to  the  ACA  brought  by
several states without specifically ruling on the constitutionality of the ACA. Thus, the ACA will remain in effect in its
current form. Further, prior to the U.S. Supreme Court ruling, President Biden issued an executive order to initiate a special
enrollment period from February 15, 2021, through August 15, 2021, for purposes of obtaining health insurance coverage
through the ACA marketplace. The executive order also instructed certain governmental agencies to review and reconsider
their  existing  policies  and  rules  that  limit  access  to  healthcare,  including  among  others,  reexamining  Medicaid
demonstration projects and waiver programs that include work requirements, and policies that create unnecessary barriers
to obtaining access to health insurance coverage through Medicaid or the ACA.

Other legislative and regulatory changes have been proposed and adopted in the United States since the ACA was
enacted. These changes included an aggregate reduction in Medicare payments to providers of 2 % per fiscal year, which
went  into  effect  on  April  1,  2013  and  will  remain  in  effect  through  2030,  with  the  exception  of  a  temporary  suspension
from  May  1,  2020  through  March  31,  2022,  unless  additional  Congressional  action  is  taken.  In  addition,  the  American
Taxpayer Relief Act of 2012, which further reduced Medicare payments to several providers, including hospitals, imaging
centers  and  cancer  treatment  centers,  and  increased  the  statute  of  limitations  period  for  the  government  to  recover
overpayments to providers from three to five years. Moreover, the federal government and individual states in the United
States have become increasingly active in developing proposals, passing legislation and implementing regulations designed
to  control  drug  pricing,  including  price  or  patient  reimbursement  constraints,  discounts,  formulary  flexibility,  marketing
cost disclosure and transparency measures. These new laws and the regulations and policies implementing them, as well as
other  healthcare-related  measures  that  may  be  adopted  in  the  future,  could  materially  reduce  our  ability  to  develop  and
commercialize IMCIVREE™ and our product candidates, if approved.

Human Capital

Our employees are dedicated to our mission of changing the paradigm for the treatment of rare genetic diseases of
obesity. As of January 31, 2022, we had approximately 140 employees, about 80 of which are located near our corporate
headquarters in Boston. We spent much of 2021 building out our U.S. field presence and enhancing our global footprint
and now have approximately 40 employees located in various parts of the United States and nearly 20 employees across
Europe. We also work with consultants and contractors to provide both specific expertise and flexibility for our business
needs.

We  believe  that  our  future  success  largely  depends  upon  our  continued  ability  to  attract,  hire  and  retain  highly
skilled employees. We emphasize several measures and objectives in managing our human capital assets, including, among
others,  employee  engagement,  development  and  training,  talent  acquisition  and  retention,  employee  wellness,  diversity,
inclusion,  and  compensation  and  pay  equity.  We  frequently  assess  the  external  market  to  provide  our  employees  with
competitive  salaries,  bonuses,  opportunities  for  equity  ownership,  development  opportunities  that  enable  continued
learning and growth and a robust employment package that promotes well-being across all aspects of their lives, including
health care, retirement planning and paid time off. In addition, we regularly collect employee feedback to ensure open

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communication, measure employee engagement and identify opportunities for improvement.  Throughout the COVID-19
pandemic,  we  have  implemented  efforts  to  ensure  our  employees  are  enabled  to  take  advantage  of  flexible  working
arrangements and collaborate safely.

We  believe  that  developing  a  diverse  and  inclusive  culture  is  critical  to  continuing  to  attract  and  retain  the  top
talent necessary to deliver on our growth strategy. As such, we are investing in a work environment where our employees
feel inspired and included. We continue to focus on extending our diversity and inclusion initiatives across our entire global
workforce.  In  addition,  we  work  to  ensure  our  employees  understand  and  embrace  our  commitment  to  our  patient
community  and  our  focus  on  changing  the  paradigm  for  treatment  of  rare  genetic  diseases  of  obesity.  We  value  our
employees’  courage  to  ask  bold  questions  and  their  commitment  to  learning  and  collaboration,  as  each  person  brings  a
unique  contribution  to  furthering  our  mission.  Grounded  in  these  guiding  principles,  we  believe  we  have  developed  a
collaborative environment where our colleagues feel respected, valued, and inspired to contribute to their fullest potential.

Corporate Information

We  are  a  Delaware  corporation  organized  in  February  2013.  We  were  originally  incorporated  under  the  name
Rhythm Metabolic, Inc., and as of October 2015, under the name Rhythm Pharmaceuticals, Inc. Our principal executive
offices are located at 222 Berkeley Street, 12th Floor, Boston, MA 02116, and our telephone number is (857) 264-4280.
Our website is www.rhythmtx.com. Information that is contained on, or that can be accessed through, our website is not
incorporated by reference into this Annual Report on Form 10-K, and you should not consider information on our website
to be part of this Annual Report on Form 10-K.

Available Information

We make available free of charge on the investor relations portion of our website our Annual Reports on Form 10-
K,  Quarterly  Reports  on  Form  10-Q,  Current  Reports  on  Form  8-K,  Proxy  Statements  for  our  annual  meetings  of
stockholders,  and  amendments  to  those  reports,  as  soon  as  reasonably  practicable  after  we  file  such  material  with,  or
furnish it to, the Securities and Exchange Commission, or SEC. These filings are available for download free of charge on
the  investor  relations  portion  of  our  website  located  at  https://ir.rhythmtx.com.  The  SEC  also  maintains  a  website  that
contains reports, proxy statements and other information about issuers, like us, that file electronically with the SEC.  The
address of that website is https://www.sec.gov.

Item 1A. Risk Factors

Our  operations  and  financial  results  are  subject  to  various  risks  and  uncertainties,  including  those  described
below,  which  could  adversely  affect  our  business,  financial  condition,  results  of  operations,  cash  flows,  and  the  trading
price of our common stock. Additional risks and uncertainties that we currently do not know about or that we currently
believe to be immaterial may also impair our business. You should carefully consider the risks described below and the
other  information  in  this  Annual  Report,  including  our  audited  consolidated  financial  statements  and  the  related  notes
thereto, and “Management’s Discussion and Analysis of Financial Condition and Results of Operations.”

Risks Related to Our Financial Position and Need for Capital

We  are  a  commercial  stage  biopharmaceutical  company  with  a  limited  operating  history  and  have  not  generated
significant  revenue  from  product  sales.  We  have  incurred  significant  operating  losses  since  our  inception,  anticipate
that we will incur continued losses for the foreseeable future and may never achieve profitability.

We are a commercial stage biopharmaceutical company with a limited operating history on which to base your

investment decision. Biopharmaceutical product development is a highly speculative undertaking and involves a substantial
degree of risk. We were incorporated in February 2013. Our operations to date have been limited primarily to acquiring
rights to intellectual property, business planning, raising capital, developing our technology, identifying potential product
candidates, undertaking preclinical studies and conducting research and development activities, including clinical trials, for
setmelanotide. To date, we have not generated significant revenue from product sales. We have obtained FDA approval for
IMCIVREE for chronic weight management in adult and pediatric patients 6 years of

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age and older with obesity due to proopiomelanocortin, or POMC, proprotein convertase subtilisin/kexin type 1, or PCSK1, 
or leptin receptor, or LEPR, deficiency confirmed by genetic testing.  IMCIVREE has also received marketing 
authorization from the European Commission and Great Britain’s Medicines and Healthcare Products Regulatory Agency, 
or MHRA for the treatment of obesity and the control of hunger associated with genetically confirmed loss-of-function 
biallelic POMC including PCSK1, deficiency or biallelic LEPR deficiency in adults and children 6 years of age and above.  
We have not obtained any other regulatory approvals for setmelanotide. We first commercialized IMCIVREE in the U.S. in 
the first quarter of 2021 and therefore do not have a long history operating as a commercial company. We will need to 
begin transitioning from a company with a research and development focus to a company capable of supporting 
commercial activities and we may not be successful in such a transition. We have not yet demonstrated our ability to 
manufacture at commercial scale, or arrange for a third party to do so on our behalf, or conduct sales, marketing and 
distribution activities necessary for successful product commercialization. Consequently, any predictions made about our 
future success or viability may not be as accurate as they could be if we had a longer operating history.

Since our inception, we have focused substantially all of our efforts and financial resources on the research and
development  of  setmelanotide,  which  is  approved  by  the  FDA  and  authorized  by  the  European  Commission  and  the
MHRA,  as  noted  above,  and  is  in  development  to  address  patients  with    Bardet-Biedl  syndrome,  or  BBS,  Alström
syndrome, and several other indications. We have funded our operations to date primarily through the proceeds from the
sales of common stock and preferred stock, asset sales, as well as capital contributions from our former parent, Rhythm
Holdings LLC, and have incurred losses in each year since our inception.

Our  net  losses  were  $69.6  million  and  $134.0  million  for  the  years  ended  December  31,  2021  and  2020,
respectively. As of December 31, 2021, we had an accumulated deficit of $528.9 million. Substantially all of our operating
losses have resulted from costs incurred in connection with our development programs and from commercial and general
and administrative costs associated with our operations. Our prior losses, combined with expected future losses, have had
and will continue to have an adverse effect on our stockholders’ deficit and working capital. We expect our research and
development  expenses  to  significantly  increase  in  connection  with  our  additional  clinical  trials  of  setmelanotide  and
development of any other product candidates we may choose to pursue. In addition, having obtained marketing approval
for  IMCIVREE,  we  will  incur  significant  sales,  marketing  and  outsourced  manufacturing  expenses.  We  will  incur
additional  costs  associated  with  operating  as  a  public  company,  including  as  a  result  of  no  longer  qualifying  as  an
“emerging growth company” as defined in the Jumpstart Our Business Startups Act of 2012, or the JOBS Act. As a result,
we  expect  to  continue  to  incur  significant  and  increasing  operating  losses  for  the  foreseeable  future.  Because  of  the
numerous risks and uncertainties associated with developing pharmaceutical products, we are unable to predict the extent
of any future losses or when we will become profitable, if at all. Even if we do become profitable, we may not be able to
sustain or increase our profitability on a quarterly or annual basis.

Our ability to become profitable depends upon our ability to generate revenue. To date, we have not generated any
significant revenue from setmelanotide. Our ability to generate revenue depends on a number of factors, including, but not
limited to, our ability to:

● commercialize setmelanotide by building a commercial organization and/or entering into collaborations with

third parties;

● ensure setmelanotide is available to patients;

● achieve market acceptance of setmelanotide in the medical community and with third-party payors;

● continue to initiate and successfully complete later-stage clinical trials that meet their clinical endpoints;

● continue to initiate and successfully complete all safety studies required to obtain U.S. and foreign marketing
approvals  for  setmelanotide  as  a  treatment  for  obesity  caused  by  genetic  deficiencies  affecting  the  MC4R
pathway; and

● successfully manufacture or contract with others to manufacture setmelanotide.

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Absent  our  entering  into  collaboration  or  partnership  agreements,  we  expect  to  incur  significant  sales  and
marketing  costs  as  we  prepare  to  commercialize  setmelanotide.  Even  though  IMCIVREE  is  FDA  approved  for  chronic
weight  management  in  patients  6  years  of  age  and  older  with  obesity  due  to  POMC,  PCSK1  or  LEPR  deficiencies
confirmed  by  genetic  testing  and  authorized  in  the  EU  and  Great  Britain  for  the  treatment  of  obesity  and  the  control  of
hunger  associated  with  genetically  confirmed  loss-of-function  biallelic  POMC  including  PCSK1,  deficiency  or  biallelic
LEPR deficiency in adults and children 6 years of age and above, and even if we successfully complete our pivotal and
other clinical trials and setmelanotide is approved for commercial sale in additional indications, setmelanotide may not be a
commercially  successful  drug.  We  may  not  achieve  profitability  soon  after  generating  product  sales,  if  ever.  If  we  are
unable  to  generate  product  revenue,  we  will  not  become  profitable  and  will  be  unable  to  continue  operations  without
continued funding.

We will need to raise additional funding, which may not be available on acceptable terms, or at all. Failure to obtain
this necessary capital when needed may force us to delay, limit or terminate our product development efforts or other
operations.

We are currently in the early stages of commercializing IMCIVREE for chronic weight management in patients
with  obesity  due  to  POMC,  PCSK1  or  LEPR  deficiencies  in  the  U.S.  and  the  EU  and  Great  Britain  and  advancing
setmelanotide through clinical development for additional indications in the United States and for potential approvals in
other  countries.  Developing  peptide  therapeutic  products  is  expensive  and  we  expect  our  research  and  development
expenses to increase substantially in connection with our ongoing activities, particularly as we advance setmelanotide in
additional  clinical  trials.  We  intend  to  use  our  available  cash  resources  to  advance  the  clinical  development  of
setmelanotide, for disease-education and community-building activities, precommercialization activities for setmelanotide
in  BBS,  patient  identification,  and  commercialization  activities  related  to  IMCIVREE.  Depending  on  the  status  of
additional regulatory approvals and commercialization of setmelanotide, as well as the progress we make in any sales of
IMCIVREE, we may still require significant additional capital to fund the continued development of setmelanotide and our
operating needs thereafter. We may also need to raise additional funds if we choose to pursue additional indications and/or
geographies for setmelanotide or otherwise expand more rapidly than we presently anticipate.

From August 2015 through August 2017, we raised aggregate net proceeds of $80.8 million through our issuance
of series A preferred stock. In connection with our initial public offering, or IPO, in October 2017 and our underwritten
follow-on offerings through February 2021, we raised aggregate net proceeds of approximately $611.4 million through the
issuance of our common stock after deducting underwriting discounts, commissions and offering related transaction costs.
Since inception, we have received a further $100.0 million from asset sales, specifically in connection with the sale of our
Rare Pediatric Disease Priority Review Voucher, or PRV, to Alexion Pharmaceuticals, Inc. As of December 31, 2021, our
cash  and  cash  equivalents  and  short-term  investments  were  approximately  $294.9  million.  We  expect  our  cash  and  cash
equivalents  and  short-term  investments  will  enable  us  to  fund  our  operating  expenses  into  the  second  half  of  2023.
 However, our operating plan may change as a result of many factors currently unknown to us, and we may need to seek
additional funds sooner than planned, through public or private equity or debt financings, government or other third party
funding, marketing and distribution arrangements and other collaborations, strategic alliances and licensing arrangements,
or a combination of these approaches. We will also require additional capital to obtain additional regulatory approvals for,
and to continue to commercialize, setmelanotide. Raising funds in the current economic environment, particularly in light
of ongoing uncertainty related to the COVID-19 pandemic, may present additional challenges. Even if we believe we have
sufficient funds for our current or future operating plans, we may seek additional capital if market conditions are favorable
or if we have specific strategic considerations.

Any  additional  fundraising  efforts  may  divert  our  management  from  their  day-to-day  activities,  which  may
adversely  affect  our  ability  to  develop  and  commercialize  setmelanotide.  In  addition,  we  cannot  guarantee  that  future
financing will be available in sufficient amounts or on terms acceptable to us, if at all. Moreover, the terms of any financing
may adversely affect the holdings or the rights of our stockholders and the issuance of additional securities, whether equity
or  debt,  by  us,  or  the  possibility  of  such  issuance,  may  cause  the  market  price  of  our  shares  to  decline.  The  sale  of
additional equity or convertible securities would dilute all of our stockholders. The incurrence of indebtedness would result
in increased fixed payment obligations, and we may be required to agree to certain restrictive covenants, such as limitations
on our ability to incur additional debt, limitations on our ability to acquire, sell or license intellectual property rights, and
other operating restrictions that could adversely impact our ability to conduct our business. We could also be required to

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seek funds through arrangements with collaborative partners or other third parties at an earlier stage than otherwise would
be  desirable  and  we  may  be  required  to  relinquish  rights  to  setmelanotide  or  technologies  or  otherwise  agree  to  terms
unfavorable to us, any of which may have a material adverse effect on our business, operating results and prospects.

If  we  are  unable  to  obtain  funding  on  a  timely  basis,  we  may  be  required  to  significantly  curtail,  delay  or
discontinue one or more of our research or development programs or the commercialization of setmelanotide or be unable
to expand our operations or otherwise capitalize on our business opportunities, as desired, which could materially adversely
affect our business, financial condition and results of operations.

Risks Related to the Development of Setmelanotide

Positive results from early clinical trials of setmelanotide may not be predictive of the results of later clinical trials of
setmelanotide. If we cannot generate positive results in our later clinical trials of setmelanotide, we may be unable to
successfully develop, obtain regulatory approval for, and commercialize additional indications for setmelanotide.

Positive results from any of our Phase 1, Phase 2, or Phase 3 clinical trials of setmelanotide, or initial results from
other clinical trials of setmelanotide, may not be predictive of the results of later clinical trials. The duration of effect of
setmelanotide  tested  in  our  Phase  1  and  Phase  2  clinical  trials  was  often  for  shorter  periods  than  in  our  pivotal  Phase  3
clinical trials. The duration of effect of setmelanotide has only been studied in long-term durations for a small number of
patients in our Phase 2 and Phase 3 clinical trials and safety or efficacy issues may arise when more patients are studied in
longer trials and on commercial drug. It is possible that the effects seen in short-term clinical trials will not be replicated in
long-term or larger clinical trials. In addition, not all of our trials demonstrated statistically significant weight loss and there
can be no guarantee that future trials will do so.

Positive results for one indication are not necessarily predictive of positive results for other indications. We have
demonstrated statistically significant and clinically meaningful reductions in weight and hunger in Phase 3 clinical trials in
obesity  due  to  POMC,  PCSK1  or  LEPR  deficiencies  and  BBS,  and  believe  we  have  demonstrated  proof  of  concept  in
Phase 2 clinical trials in impairments due to a variant in one of the two alleles in the POMC, PCSK1, or LEPR genes (HET
obesity), as well as the SRC1 and SH2B1 genes, all genetic diseases of extreme and unrelenting appetite and obesity. We
hypothesize that patients with other upstream genetic variants in the MC4R pathway may also respond with reductions in
weight  and  hunger  after  treatment  with  setmelanotide.  However,  patients  with  other  upstream  genetic  variants  may  not
have a similar response to setmelanotide, and until we obtain more clinical data in other genetic variants, we will not be
sure that we can achieve proof of concept in such indications.

We are actively working to advance additional genetic variants related to the MC4R pathway through our clinical
development program. Our continued development efforts are focused on obesity related to several single gene related, or
monogenic,  MC4R  pathway  impairments:  Bardet  Biedl  syndrome,  or  BBS;  Alström  syndrome;  HET  obesity  due  to  a
genetic  variant  in  one  of  the  two  alleles  of  the  POMC,  PCSK1  or  LEPR  gene,  or  HETs;  obesity  due  to  steroid  receptor
coactivator  1,  or  SRC1,  variants;  obesity  due  to  SH2B  adapter  protein  1,  or  SH2B1;  hypothalamic  obesity;  and  MC4R
deficiency obesity.  For example, in the first half of 2022 we plan to initiate our pivotal Phase 3 EMANATE clinical trial of
setmelanotide.  The  trial  is  a  randomized,  double-blind,  placebo-controlled  study  with  five  independent  sub-studies
evaluating  setmelanotide  in  patients  with:  heterozygous  POMC/PCSK1  obesity;  heterozygous  LEPR  obesity;  certain
variants of the SRC1; certain variants of SH2B1 genes; or PCSK1 N221D deletions within the MC4R pathway. Each sub-
study will be entirely independent of the others and, if successful, is designed to support separate regulatory submissions to
the  FDA  and  EMA  in  each  studied  indication.    However,  the  FDA  and  EMA  may  not  view  positive  results  in  one  sub-
study,  even  if  such  results  are  statistically  significant  and  clinically  meaningful,  as  being  sufficient  for  approval  for  any
given indication.

Success in a basket trial, or any trial in one indication, may not predict success in another indication. In contrast,
in the event of an adverse safety issue, clinical hold, or other adverse finding in one or more indications being tested, such
event could adversely affect our trials in the other indications and may delay or prevent completion of such clinical trials.

Many  companies  in  the  pharmaceutical  and  biotechnology  industries  have  suffered  significant  setbacks  in  later

stage clinical trials after achieving positive results in early stage development, and we cannot be certain that we will not

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face similar setbacks. These setbacks have been caused by, among other things, pre-clinical findings made while clinical
trials were underway.

Additionally,  setbacks  may  be  caused  by  new  safety  or  efficacy  observations  made  in  clinical  trials,  including
previously  unreported  adverse  events,  or  AEs.  Moreover,  preclinical  and  clinical  data  are  often  susceptible  to  varying
interpretations  and  analyses,  and  many  companies  that  believed  their  product  candidates  performed  satisfactorily  in
preclinical  studies  and  clinical  trials  nonetheless  failed  to  obtain  FDA  approval  or  a  marketing  authorization  from  the
European Commission or foreign regulatory authorities. If we fail to obtain positive results in our Phase 3 clinical trials of
setmelanotide, the development timeline and regulatory approval and commercialization prospects for setmelanotide and,
correspondingly, our business and financial prospects, would be materially adversely affected.

Interim,  “topline”  and  preliminary  data  from  our  clinical  trials  that  we  announce  or  publish  from  time  to  time  may
change as more patient data become available and are subject to audit and verification procedures that could result in
material changes in the final data.

From time to time, we may publicly disclose preliminary or topline data from our preclinical studies and clinical
trials, which is based on a preliminary analysis of then-available data, and the results and related findings and conclusions
are subject to change following a more comprehensive review of the data related to the particular study or trial. We make
assumptions, estimations, calculations and conclusions as part of our analyses of data, and we may not have received or
had the opportunity to fully and carefully evaluate all data. As a result, the topline or preliminary results that we report may
differ  from  future  results  of  the  same  studies,  or  different  conclusions  or  considerations  may  qualify  such  results,  once
additional  data  have  been  received  and  fully  evaluated.  Topline  data  also  remain  subject  to  audit  and  verification
procedures that may result in the final data being materially different from the preliminary data we previously published or
reported. As a result, topline data should be viewed with caution until the final data are available.

From time to time, we may also disclose interim data from our preclinical studies and clinical trials. For example,
in January 2021 we announced interim data from our ongoing exploratory Phase 2 Basket Study evaluating setmelanotide
in patients with MC4R pathway genetic variants in one of the two alleles in the POMC, PCSK1, or LEPR genes, as well as
the SRC1 and SH2B1 genes.   Interim data from clinical trials that we may complete are subject to the risk that one or more
of the clinical outcomes may materially change as patient enrollment continues and more patient data become available.
Adverse  differences  between  preliminary  or  interim  data  and  final  data  could  significantly  harm  our  business  prospects.
Further, disclosure of interim data by us or by our competitors could result in volatility in the price of our common stock.

Further,  others,  including  regulatory  agencies,  may  not  accept  or  agree  with  our  assumptions,  estimates,
calculations, conclusions or analyses or may interpret or weigh the importance of data differently, which could impact the
value of the particular program, the approvability or commercialization of the particular product candidate or product and
our company in general. In addition, the information we choose to publicly disclose regarding a particular study or clinical
trial  is  based  on  what  is  typically  extensive  information,  and  you  or  others  may  not  agree  with  what  we  determine  is
material or otherwise appropriate information to include in our disclosure.

If  the  interim,  topline,  or  preliminary  data  that  we  report  differ  from  actual  results,  or  if  others,  including
regulatory  authorities,  disagree  with  the  conclusions  reached,  our  ability  to  obtain  approval  for,  and  commercialize,  our
product candidates may be harmed, which could harm our business, operating results, prospects or financial condition.

The number of patients suffering from each of the MC4R pathway variants we are targeting is small and has not been
established  with  precision.  If  the  actual  number  of  patients  is  smaller  than  we  estimate,  our  revenue  and  ability  to
achieve profitability may be materially adversely affected.

Due  to  the  rarity  of  our  target  indications,  there  is  no  comprehensive  patient  registry  or  other  method  of
establishing with precision the actual number of patients with MC4R pathway deficiencies. As a result, we have had to rely
on other available sources to derive clinical prevalence estimates for our target indications. In addition, we have internal
genetic sequencing results from approximately 45,000 patients, as of December 31, 2021, with severe obesity that provide
another approach to estimating prevalence. Since the published epidemiology studies for these genetic variants

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are based on relatively small population samples, and are not amenable to robust statistical analyses, it is possible that these
projections  may  significantly  exceed  the  addressable  population,  particularly  given  the  need  to  genotype  patients  to
definitively confirm a diagnosis.

Based on multiple epidemiological methods, we have estimated the potential addressable patient populations with

these MC4R pathway deficiencies based on the following sources and assumptions:

● POMC Deficiency Obesity. POMC Deficiency Obesity is defined by the presence of biallelic variants in the
POMC  or  PCSK1  genes  that  are  interpreted  as  pathogenic,  likely  pathogenic,  or  of  uncertain  significance
(VOUS). Our addressable patient population estimate for POMC deficiency obesity is approximately 100 to
500 patients in the United States, with a comparable addressable patient population in Europe. Our estimates
are based on:

● approximately  50  patients  with  POMC  deficiency  obesity  noted  in  a  series  of  published  case  reports,
each mostly reporting a single or small number of patients. However, we believe our addressable patient
population  for  this  deficiency  may  be  approximately  100  to  500  patients  in  the  United  States,  and  a
comparable  addressable  patient  population  in  Europe,  as  most  of  the  reported  cases  are  from  a  small
number of academic research centers, and because genetic testing for POMC deficiency obesity is often
unavailable and currently is rarely performed;

● our belief, based on discussions with experts in rare diseases, that the number of diagnosed cases could

increase several-fold with increased awareness of this deficiency and the availability of new treatments;

● U.S. Census Bureau figures for adults and children, and Centers for Disease Control and Prevention, or
CDC,  prevalence  numbers  for  adults  with  severe  obesity  (body  mass  index,  or  BMI,  greater  than  40
kg/m2) and for children with severe early-onset obesity (99th percentile at ages two to 17 years old); and

● our internal sequencing yield for POMC deficiency obesity patients (including both POMC and PCSK1
gene  diseases),  defined  as  patients  having  biallelic  variants  in  the  POMC  or  PCSK1  genes  that  are
interpreted  as  pathogenic,  likely  pathogenic,  or  of  uncertain  significance  (VOUS),  of  approximately
0.05%.

● LEPR Deficiency Obesity.  LEPR  Deficiency  Obesity  is  defined  by  the  presence  of  biallelic  variants  in  the
LEPR gene that are interpreted as pathogenic, likely pathogenic, or of uncertain significance (VOUS). Our
addressable patient population estimate for LEPR deficiency obesity is approximately 500 to 2,000 patients
in the United States, with a comparable addressable patient population in Europe. Our estimates are based on:

● epidemiology  studies  on  LEPR  deficiency  obesity  in  small  cohorts  of  patients  comprised  of  children

with severe obesity and adults with severe obesity who have a history of early onset obesity;

● U.S. Census Bureau figures for adults and children and CDC prevalence numbers for adults with severe
obesity (BMI, greater than 40 kg/m2) and for children with severe early-onset obesity (99th percentile at
ages two to 17 years old);

● with wider availability of genetic testing expected for LEPR deficiency obesity and increased awareness
of  new  treatments,  our  belief  that  up  to  40%  of  patients  with  these  diseases  may  eventually  be
diagnosed; and

● our internal sequencing yield for LEPR deficiency obesity patients, defined as patients having biallelic
variants  in  the  LEPR  gene  that  are  interpreted  as  pathogenic,  likely  pathogenic,  or  of  uncertain
significance (VOUS), of approximately 0.09%.

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● Bardet-Biedl  Syndrome.  Our  addressable  patient  population  estimate  for  BBS  is  approximately  1,500  to

2,500 patients in the United States based on:

● published  prevalence  estimates  of  one  in  100,000  in  North  America,  which  projects  to  approximately
3,250 people in the United States. We believe the majority of these patients are addressable patients; and

● our belief that with wider availability of genetic testing expected for BBS and increased awareness of

new treatments, the number of patients diagnosed with this disorder will increase.

● Alström Syndrome. Our addressable patient population estimate for Alström syndrome is approximately 500

patients in the United States. This estimate is based on:

● published prevalence estimates of one in 1,000,000 in North America, which projects to approximately
325 people in the United States. We believe the majority of these patients are addressable patients; and

● our belief that with wider availability of genetic testing expected for Alström syndrome and increased

awareness of new treatments, the number of patients diagnosed with this disorder will increase.

● POMC, PCSK1, or LEPR Heterozygous Obesities; SRC1 and SH2B1 Obesities. Our potential setmelanotide-
responsive patient population estimate for POMC, PCSK1, or LEPR heterozygous, SRC1 and SH2B1 obesity
patients  with  at  least  one  variant  interpreted  as  pathogenic,  likely  pathogenic,  or  of  uncertain  significance
(VOUS) is 100,000 to 200,000 patients in the United States. Our estimates are based on:

● U.S.  Census  Bureau  population  data  and  CDC  prevalence  numbers  for  early  onset  obesity  (120%  the

95th percentile between the ages of 2-5 years);

● our internal sequencing yield of patients with POMC, PCSK1, or LEPR heterozygous, SRC1 or SH2B1
variants  interpreted  as  pathogenic,  likely  pathogenic,  or  of  uncertain  significance  (VOUS)  of
approximately 10-15%; and

● a clinical response rate of 40% for patients carrying pathogenic or likely pathogenic variants, and 20%

for patients carrying a variant of uncertain significance (VOUS).

The clinical response rate used in this calculation is based on the clinical data currently available to us from our
trials and may change as more data become available.

● MC4R  Deficiency  Obesity.  Our  addressable  patient  population  estimate  for  MC4R-rescuable  deficiency

obesity is approximately 10,000 patients in the United States. This estimate is based on:

● U.S.  Census  Bureau  population  data  and  CDC  prevalence  numbers  for  early  onset  obesity  (120%  the

95th percentile between the ages of 2-5 years);

● a  comprehensive  ongoing  biochemical  screening  study  indicating  there  may  be  a  defined  subset  of

individuals who carry MC4R variants that may be rescued by an MC4R agonist; and

● our  internal  sequencing  yield  for  MC4R  deficiency  obesity  patients  of  approximately  2.0%  prior  to

application of functional filters.

● Hypothalamic obesity. Our addressable patient population estimate for hypothalamic obesity (HO) is greater

than 4,500 patients in the United States. This estimate is based on:

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● an  annual  incidence  of  craniophryngioma  (CP)  of  approximately  1.3  million  per  year  in  the  United
States, which projects to approximately 493 cases of CP per year based on a United States population of
approximately 329 million;

● approximately 62.5% (based on a published range of 50% to 75%) of CP patients develop HO;

● 20-year average survival after CP surgery of 75% (based on a published range of 66% to 85%);

● allowing  for  patients  that  develop  HO  due  to  other  factors  besides  CP,  results  in  an  estimated  HO

prevalence in the United States exceeding 4,500 patients; and

● internal  Company  estimate  is  based  on  reported  incidence  of  hypothalamic  obesity  following

craniophryngioma and long-term survival rates.

We believe that the patient populations in the EU are at least as large as those in the United States. However, we

do not have comparable epidemiological data from the EU and these estimates are therefore based solely on applying
relative population percentages to the Company-derived estimates described above.

Defining the exact genetic variants that result in MC4R pathway diseases is complex, so if any approval that we
obtain is based on a narrower definition of these patient populations than we had anticipated, then the potential market for
setmelanotide for these indications will be smaller than we originally believed. In either case, a smaller patient population
in our target indications would have a materially adverse effect on our ability to achieve commercialization and generate
revenues.

If  we  experience  delays  or  difficulties  in  the  enrollment  and/or  retention  of  patients  in  clinical  trials,  our  regulatory
submissions or receipt of additional marketing approvals could be delayed or prevented.

We may not be able to initiate or continue our planned clinical trials on a timely basis or at all for our product
candidates if we are unable to recruit and enroll a sufficient number of eligible patients to participate in these trials through
completion of such trials as required by the FDA or other comparable foreign regulatory authorities. Patient enrollment is a
significant factor in the timing of clinical trials. Our ability to enroll eligible patients may be limited or may result in slower
enrollment than we anticipate.

Our  clinical  trials  will  compete  with  other  clinical  trials  that  are  in  the  same  therapeutic  areas  as  our  product
candidates,  including  general  obesity,  and  this  competition  reduces  the  number  and  types  of  patients  available  to  us,  as
some patients who might have opted to enroll in our trials may instead opt to enroll in a trial being conducted by one of our
competitors. Because the number of qualified clinical investigators and clinical trial sites is limited, we expect to conduct
some of our clinical trials at the same clinical trial sites that some of our competitors use, which will reduce the number of
patients who are available for our clinical trials at such clinical trial sites. In addition, there are limited patient pools from
which  to  draw  for  clinical  studies.  In  addition  to  the  rarity  of  genetic  diseases  of  obesity,  the  eligibility  criteria  of  our
clinical  studies  will  further  limit  the  pool  of  available  study  participants  as  we  will  require  that  patients  have  specific
characteristics that we can measure or to assure their disease is either severe enough or not too advanced to include them in
a study. Patient enrollment for our current or any future clinical trials may be affected by other factors, including:

● size and nature of the patient population;

● severity of the disease under investigation;

● availability and efficacy of approved drugs for the disease under investigation;

● patient eligibility criteria for the trial in question as defined in the protocol;

● perceived risks and benefits of the product candidate under study;

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● clinicians’ and patients’ perceptions as to the potential advantages of the product candidate being studied in
relation  to  other  available  therapies,  including  any  new  products  that  may  be  approved  or  future  product
candidates being investigated for the indications we are investigating;

● clinicians’ willingness to screen their patients for genetic markers to indicate which patients may be eligible

for enrollment in our clinical trials;

● delays  in  or  temporary  suspension  of  the  enrollment  of  patients  in  our  planned  clinical  trial  due  to  the

COVID-19 pandemic;

● ability to obtain and maintain patient consents;

● patient referral practices of physicians;

● the ability to monitor patients adequately during and after treatment;

● proximity and availability of clinical trial sites for prospective patients; and

● the  risk  that  patients  enrolled  in  clinical  trials  will  drop  out  of  the  trials  before  completion,  including  as  a
result  of  contracting  COVID-19  or  other  health  conditions  or  being  forced  to  quarantine,  or,  because  they
may be late-stage cancer patients, will not survive the full terms of the clinical trials.

In addition, the pediatric population is an important patient population for setmelanotide, and our addressable patient
population  estimates  include  pediatric  populations.  However,  it  may  be  more  challenging  to  conduct  studies  in  younger
participants, and to locate and enroll pediatric patients. These factors may make it difficult for us to enroll enough patients
to complete our clinical trials in a timely and cost-effective manner. Our inability to enroll a sufficient number of patients
for our clinical trials would result in significant delays or may require us to abandon one or more clinical trials altogether.
Enrollment  delays  in  our  clinical  trials  may  also  result  in  increased  development  costs  for  setmelanotide  and  any  future
product  candidates  and  jeopardize  our  ability  to  obtain  additional  marketing  approvals  for  the  sale  of  setmelanotide.
Furthermore,  even  if  we  are  able  to  enroll  a  sufficient  number  of  patients  for  our  clinical  trials,  we  may  have  difficulty
maintaining participation in our clinical trials through the treatment and any follow-up periods.

Failures or delays in the commencement or completion of our planned clinical trials of setmelanotide could result in
increased costs to us and could delay, prevent or limit our ability to generate revenue and continue our business.

Successful completion of our ongoing and planned clinical trials is a prerequisite to submitting an NDA or NDA
supplement to the FDA, an MAA to the EMA, and other applications for marketing authorization to equivalent competent
authorities in foreign jurisdictions, and consequently, successful completion of such trials, at a minimum will be required
for regulatory approvals and the commercial marketing of setmelanotide.

We  do  not  know  whether  our  planned  clinical  trials  will  begin  or  whether  any  of  our  clinical  trials  will  be
completed  on  schedule,  if  at  all,  as  the  commencement  and  successful  completion  of  clinical  trials  can  be  delayed  or
prevented for a number of reasons, including but not limited to:

● inability to generate sufficient preclinical or other in vivo or in vitro data to support the initiation of clinical

studies;

● delays in the completion of preclinical laboratory tests, animal studies and formulation studies in accordance

with FDA’s good laboratory practice requirements and other applicable regulations;

● the FDA or other equivalent competent authorities in foreign jurisdictions may deny permission to proceed
with our ongoing or planned trials or any other clinical trials we may initiate, or may place a clinical trial on
hold or be suspended;

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● delays  in  filing  or  receiving  authorization  to  proceed  under  an  additional  investigational  new  drug

application, or IND, or similar foreign application if required;

● delays in reaching a consensus with the FDA and other regulatory agencies on study design and obtaining

regulatory authorization to commence clinical trials;

● delays  in  reaching  or  failing  to  reach  agreement  on  acceptable  terms  with  prospective  contract  research
organizations, or CROs, and clinical trial sites, the terms of which can be subject to extensive negotiation and
may vary significantly among different CROs and trial sites;

● difficulties in obtaining Institutional Review Board, or IRB, and/or ethics committee approval to conduct a

clinical trial at a prospective site or sites;

● since many already diagnosed patients are at academic sites, delays in conducting clinical trials at academic
sites due to the particular challenges and delays typically associated with those sites, as well as the lack of
alternatives to these sites which have already diagnosed patients;

● inadequate  quantity  or  quality  of  setmelanotide  or  other  materials  necessary  to  conduct  clinical  trials,

including delays in the manufacturing of sufficient supply of finished drug product;

● challenges in identifying, recruiting and training suitable clinical investigators;

● challenges in recruiting and enrolling suitable patients to participate in clinical trials;

● severe or unexpected drug related side effects experienced by patients in a clinical trial, including side effects

previously identified in our completed clinical trials;

● difficulty collaborating with patient groups and investigators;

● failure  by  our  CROs,  other  third  parties  or  us  to  perform  in  accordance  with  the  FDA’s  or  any  other
regulatory  authority’s  good  clinical  practice  requirements,  or  GCPs,  or  applicable  regulatory  guidelines  in
other countries;

● occurrence of adverse events associated with setmelanotide that are viewed to outweigh its potential benefits,

or occurrence of adverse events in trial of the same or similar class of agents conducted by other companies;

● changes to the clinical trial protocols;

● clinical sites deviating from trial protocol or dropping out of a trial;

● changes in regulatory requirements and guidance that require amending or submitting new clinical protocols;

● changes in the standard of care on which a clinical development plan was based, which may require new or

additional trials;

● selection of clinical endpoints that require prolonged periods of observation or analyses of resulting data;

● the cost of clinical trials of our product candidates being greater than we anticipate;

● clinical trials of our product candidates producing negative or inconclusive results, which may result in our
deciding,  or  regulators  requiring  us,  to  conduct  additional  clinical  trials  or  abandon  development  of  such
product candidates; and

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● development of antibodies to the drug or adjuvants may result in loss of efficacy or safety events.

In addition, disruptions caused by the COVID-19 pandemic may increase the likelihood that we encounter such
difficulties  or  delays  in  initiating,  enrolling,  conducting  or  completing  our  planned  and  ongoing  clinical  trials.    Clinical
trials may also be delayed or terminated as a result of ambiguous or negative interim results. In addition, a clinical trial
may be suspended or terminated by us, the FDA or other equivalent competent authorities in foreign jurisdictions, the IRBs
or ethics committees at the sites where the IRBs or the ethics committees are overseeing a clinical trial, a data and safety
monitoring  board,  or  DSMB,  or  Safety  Monitoring  Committee,  or  SMC,  overseeing  the  clinical  trial  at  issue  or  other
equivalent competent authorities due to a number of factors, including, among others:

● failure to conduct the clinical trial in accordance with regulatory requirements or our clinical trial protocols;

● inspection of the clinical trial operations or trial sites by the FDA or other equivalent competent authorities
that reveals deficiencies or violations that require us to undertake corrective action, including the imposition
of a clinical hold;

● unforeseen safety issues, adverse side effects or lack of effectiveness;

● changes in government regulations or administrative actions;

● problems with clinical trial supply materials; and

● lack of adequate funding to continue the clinical trial.

Delays in the completion of any preclinical studies or clinical trials of setmelanotide will increase our costs, slow
down our product candidate development and approval process and delay or potentially jeopardize our ability to commence
product  sales  and  generate  product  revenue.  In  addition,  many  of  the  factors  that  cause,  or  lead  to,  a  delay  in  the
commencement  or  completion  of  clinical  trials  may  also  ultimately  lead  to  the  denial  of  a  regulatory  approval  for
setmelanotide. Any delays to our preclinical studies or clinical trials that occur as a result could shorten any period during
which we may have the exclusive right to commercialize setmelanotide and our competitors may be able to bring products
to  market  before  we  do,  and  the  commercial  viability  of  our  product  candidates  could  be  significantly  reduced.  Any  of
these occurrences may harm our business, financial condition and prospects significantly.

The  COVID-19  pandemic  has  and  may  continue  to  adversely  impact  our  business,  including  our  preclinical  studies,
clinical trials and our commercialization prospects.

The COVID-19 pandemic has spread to multiple countries and regions, including the United States, Canada and
Europe, where we have planned or ongoing preclinical studies and clinical trials. Governments from many countries have
established stay at home measures including, among other things, the prohibition of public gatherings and restrictions on
domestic and international travel. The pandemic and government measures taken in response have also had a significant
impact, both direct and indirect, on businesses and commerce, as worker shortages have occurred, supply chains have been
disrupted,  facilities  and  production  have  been  suspended,  and  demand  for  certain  goods  and  services,  such  as  medical
services and supplies, has spiked, while demand for other goods and services, such as travel, has fallen. In response to the
spread of COVID-19, we have limited access to our principal executive office with most employees continuing their work
outside of our office and restricted travel. In addition, we experienced interruption of key clinical trial activities, such as
patient attendance and clinical trial site monitoring, in our Phase 3 clinical trial evaluating setmelanotide for the treatment
of  insatiable  hunger  and  severe  obesity  in  individuals  with  BBS  or  Alström  syndrome.  If  the  COVID-19  pandemic
continues  for  a  significant  length  of  time,  we  may  experience  additional  disruptions  that  could  severely  impact  our
business, preclinical studies, clinical trials and our commercialization prospects, including:

● delays in receiving approval from local regulatory authorities to initiate or conduct our planned clinical trials;

● further delays or difficulties in enrolling patients in our clinical trials;

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● delays or difficulties in clinical site initiation, including difficulties in recruiting clinical site investigators and

clinical site staff;

● further  delays  in  clinical  sites  receiving  the  supplies  and  materials  needed  to  conduct  our  clinical  trials,

including interruption in global shipping that may affect the transport of clinical trial materials;

● changes  in  local  regulations  as  part  of  a  response  to  the  COVID-19  pandemic  which  may  require  us  to
change  the  ways  in  which  our  clinical  trials  are  conducted,  which  may  result  in  unexpected  costs,  or  to
discontinue such clinical trials altogether;

● diversion of healthcare resources away from the conduct of clinical trials, including the diversion of hospitals

serving as our clinical trial sites and hospital staff supporting the conduct of our clinical trials;

● further interruption of key clinical trial activities, such as clinical trial site monitoring, due to limitations on
travel  imposed  or  recommended  by  federal  or  state  governments,  employers  and  others,  or  interruption  of
clinical trial subject visits and study procedures, the occurrence of which could affect the integrity of clinical
trial data;

● risk that participants enrolled in our clinical trials will contract COVID-19 while the clinical trial is ongoing,
which could impact the results of the clinical trial, including by increasing the number of observed adverse
events;

● interruptions  or  delays  in  preclinical  studies  due  to  restricted  or  limited  operations  at  our  research  and

development laboratory facility;

● interruptions or delays in manufacturing activities due to restricted or limited operations at our CMOs;

● delays in global shipping of raw materials, API, and/or finished goods between locations;

● interruptions or delays in delivery of clinical trial ancillary supplies, due to restricted or limited operations;

● delays  in  necessary  interactions  with  local  regulators,  ethics  committees  and  other  important  agencies  and

contractors due to limitations in employee resources or forced furlough of government employees;

● continued limitations in employee resources that would otherwise be focused on the start-up or conduct of
our clinical trials, including because of sickness of employees or their families or the desire of employees to
avoid contact with large groups of people, or due to increased hiring and/or retention or other staffing issues;

● refusal of the FDA or foreign regulatory authorities to accept data from clinical trials in affected geographies;

● impacts from prolonged remote work arrangements, such as increased cybersecurity risks and strains on our

business continuity plans; and

● delays  in  the  receipt  of  marketing  authorizations  for  our  product  candidates,  which  could  materially  affect

our commercialization plans.

The COVID-19 pandemic continues to rapidly evolve. The extent to which the pandemic impacts our business,
preclinical  studies,  clinical  trials  and  our  commercialization  prospects  will  depend  on  future  developments,  which  are
highly uncertain and cannot be predicted with confidence, such as the duration and severity of the pandemic, the impact of
the  variants,  travel  restrictions  and  social  distancing  recommendations  and  regulations  in  the  United  States  and  other
countries,  business  closures  or  business  disruptions,  the  effectiveness  of  vaccines,  vaccine  distribution  efforts  and
treatments,  and  the  effectiveness  of  other  actions  taken  in  the  United  States  and  other  countries  to  contain  and  treat  the
disease. While the potential economic impact brought by and the duration of the COVID-19 pandemic may be difficult to

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assess or predict, the widespread pandemic has resulted in, and may continue to result in, significant disruption of global
financial  markets,  reducing  our  ability  to  access  capital,  which  could  in  the  future  negatively  affect  our  liquidity.  In
addition, the recession or economic downturn resulting from the spread of COVID-19 could materially affect our business.

Setmelanotide may cause undesirable side effects that could delay or prevent additional regulatory approvals, limit the
commercial profile of approved labeling, or result in significant negative consequences following marketing approval.

First generation MC4R agonists were predominantly small molecules that failed in clinical trials due to significant
safety  issues,  particularly  increases  in  blood  pressure,  and  had  limited  efficacy.  Undesirable  side  effects  caused  by
setmelanotide could cause us or regulatory authorities to interrupt, delay or halt clinical trials and could result in a more
restrictive  labeling  or  the  delay  or  denial  of  additional  regulatory  approvals  by  the  FDA  or  other  equivalent  competent
authorities  in  foreign  jurisdictions.  Treatment-related  side  effects  could  also  affect  patient  recruitment  or  the  ability  of
enrolled patients to complete the trial or result in potential product liability claims. Any of these occurrences may prevent
us  from  achieving  or  maintaining  market  acceptance  of  the  affected  product  candidate  and  may  adversely  affect  our
business, financial condition and prospects significantly.

Setmelanotide is an MC4R agonist. Potential side effects of MC4R agonism, which have been noted either with

setmelanotide or with other MC4R agonists in clinical trials and preclinical studies, may include:

● adverse effects on cardiovascular parameters, such as increases in heart rate and blood pressure;

● erections  in  males  and  similar  effects  in  women,  such  as  sexual  arousal,  clitoral  swelling  and

hypersensitivity;

● nausea and vomiting;

● reduced appetite;

● headache;

● effects on mood, depression, anxiety and other psychiatric manifestations; and

● other effects, for which most investigators reported as unrelated to setmelanotide and for which no increased

incidence or pattern is currently evident.

In  addition,  injection  site  reactions  have  been  seen  in  subcutaneous,  or  SC,  injections  with  setmelanotide.  In
addition,  setmelanotide  has  likely  off  target  effects  on  the  closely  related  MC1  receptor,  which  mediates  tanning  in
response to sun exposure. Other MC1 receptor mediated effects include darkening of skin blemishes, such as freckles and
moles,  and  hair  color  change.  The  cosmetic  effects  are  not  tolerated  by  all  patients,  as  a  small  number  of  patients  have
withdrawn  from  treatment  due  to  skin  darkening.  These  effects  have  generally  been  reversible  in  clinical  trials  after
discontinuation  of  setmelanotide,  but  it  is  still  unknown  if  they  will  be  reversible  with  long  term  exposure.  The  MC1
receptor  mediated  effects  may  also  carry  risks.  The  long  term  impact  of  MC1  receptor  activation  has  not  been  tested  in
clinical  trials,  and  could  potentially  include  increases  in  skin  cancer,  excess  biopsy  procedures  and  cosmetic  blemishes.
These skin changes may also result in unblinding, which could make interpretation of clinical trial results more complex
and possibly subject to bias. We have also initiated trials of setmelanotide in potential new indications that include patients
who might have more serious underlying conditions, such as Alström syndrome and other indications. It is possible that the
underlying conditions in these patients, such as congestive heart failure and potentially other conditions, may confound the
understanding of the safety profile of setmelanotide.

If  these  or  other  significant  adverse  events  or  other  side  effects  are  observed  in  any  of  our  ongoing  or  planned
clinical trials, we may have difficulty recruiting patients to the clinical trials, patients may drop out of our trials, or we may
be  required  to  abandon  the  trials  or  our  development  efforts  of  that  product  candidate  altogether.  We,  the  FDA,  other
comparable regulatory authorities or an IRB may also suspend clinical trials of a product candidate at any time for various
reasons, including a belief that subjects in such trials are being exposed to unacceptable health risks or adverse side effects.

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Some  potential  therapeutics  developed  in  the  biotechnology  industry  that  initially  showed  therapeutic  promise  in  early-
stage trials have later been found to cause side effects that prevented their further development. Even if the side effects do
not preclude setmelanotide from maintaining marketing approval or obtaining additional approvals, undesirable side effects
may inhibit market acceptance due to its tolerability versus other therapies. Any of these developments could materially
adversely affect our business, financial condition and prospects.

Further, if we or others identify undesirable side effects caused by the product, or any other similar product, before

or after regulatory approvals, a number of potentially significant negative consequences could result, including:

● regulatory authorities may request that we withdraw the product from the market or may limit or vary their

approval of the product through labeling or other means;

● regulatory  authorities  may  require  the  addition  of  labeling  statements,  such  as  a  “boxed”  warning  or  a

contraindication;

● the  FDA,  the  EU  competent  authorities  and  other  equivalent  competent  authorities  in  foreign  jurisdictions
may  require  the  addition  of  a  Risk  Evaluation  and  Mitigation  Strategy,  or  REMS,  or  other  specific
obligations  as  a  condition  for  marketing  authorization  due  to  the  need  to  limit  treatment  to  rare  patient
populations, or to address safety concerns;

● we may be required to change the way the product is distributed or administered or change the labeling of the

product;

● we  may  be  required  to  conduct  additional  studies  and  clinical  trials  or  comply  with  other  post-market

requirements to assess possible serious risks;

● we may be required to conduct long term safety follow-up evaluations, including setting up disease and drug

based registries;

● we may decide to remove the product from the marketplace;

● we could be sued and held liable for injury caused to individuals exposed to or taking the product; and

● our reputation may suffer.

Any  of  these  events  could  prevent  us  from  achieving  or  maintaining  market  acceptance  of  setmelanotide  and
could substantially increase the costs of commercializing setmelanotide and significantly impact our ability to successfully
commercialize setmelanotide and generate revenues.

We  may  not  be  able  to  obtain  or  maintain  orphan  drug  designations  for  setmelanotide  or  to  obtain  or  maintain
exclusivity  in  any  use.  Even  with  exclusivity,  competitors  may  obtain  approval  for  different  drugs  that  treat  the  same
indications as setmelanotide.

The FDA may designate drugs for relatively small patient populations as orphan drugs. Under the Orphan Drug
Act of 1983, or the Orphan Drug Act, the FDA may designate a product candidate as an orphan drug if it is intended to
treat a rare disease or condition, which is defined under the Federal Food, Drug and Cosmetic Act, or FDCA, as having a
patient population of fewer than 200,000 individuals in the United States, or a patient population greater than 200,000 in
the United States where there is no reasonable expectation that the cost of developing the drug will be recovered from sales
in the United States.

Generally,  if  a  product  candidate  with  an  orphan  drug  designation  receives  the  first  marketing  approval  for  the

indication for which it has such designation, the product is entitled to a period of seven years of marketing exclusivity,

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which  precludes  the  FDA  from  approving  another  marketing  application  for  a  product  that  constitutes  the  same  drug
treating the same indication for that marketing exclusivity period, except in limited circumstances.

The exclusivity period in the United States can be extended by six months if the NDA sponsor submits pediatric
data that fairly respond to a written request from the FDA for such data. Orphan drug exclusivity may be revoked if the
FDA  determines  that  the  request  for  designation  was  materially  defective  or  if  the  manufacturer  is  unable  to  assure
sufficient quantity of the product to meet the needs of patients with the rare disease or condition. Other potential benefits of
orphan drug designation and/or approval of a designated drug include eligibility for: exemption from certain prescription
drug  user  fees,  tax  credits  for  certain  qualified  clinical  testing  expenses,  and  waivers  from  the  pediatric  assessment
requirements of the Pediatric Research Equity Act.

In the EU, orphan drug designation is granted by the European Commission based on a scientific opinion of the
EMA’s  Committee  for  Orphan  Medicinal  Products.  A  medicinal  product  may  be  designated  as  orphan  if  its  sponsor  can
establish  that  (i)  the  product  is  intended  for  the  diagnosis,  prevention  or  treatment  of  a  life-threatening  or  chronically
debilitating condition; (ii) either (a) such condition affects no more than 5 in 10,000 persons in the EU when the application
is made, or (b) the product, without the benefits derived from orphan status, would not generate sufficient return in the EU
to justify investment; and (iii) there exists no satisfactory method of diagnosis, prevention or treatment of such condition
authorized for marketing in the EU, or if such a method exists, the medicinal product will be of significant benefit to those
affected by the condition. The application for orphan designation must be submitted before the application for marketing
authorization.

Grant of orphan designation by the European Commission also entitles the holder of this designation to financial
incentives  such  as  reduction  of  fees  or  fee  waivers,  protocol  assistance,  and  access  to  the  centralized  marketing
authorization  procedure.  Orphan  drug  designation  must  be  requested  before  submitting  an  application  for  marketing
authorization.  In  addition  to  a  range  of  other  benefits  during  the  development  and  regulatory  review,  orphan  medicinal
products  are,  upon  grant  of  marketing  authorization,  entitled  to  ten  years  of  exclusivity  in  all  EU  member  states  for  the
approved therapeutic indication, which means that the EMA and European Commission cannot accept another marketing
authorization application, grant a marketing authorization, or accept an application to extend a marketing authorization for
a similar product for the same indication for a period of ten years. The period of market exclusivity is extended by two
years  for  orphan  medicinal  products  that  have  also  complied  with  an  agreed  Pediatric  Investigation  Plan,  or  PIP.  No
extension to any supplementary protection certificate can be granted on the basis of pediatric studies for orphan indications.
Orphan medicinal product designation does not convey any advantage in, or shorten the duration of, the regulatory review
and  approval  process.  Marketing  authorization  may,  however,  be  granted  to  a  similar  medicinal  product  with  the  same
orphan indication during the ten-year period with the consent of the marketing authorization holder for the original orphan
medicinal product or if the manufacturer of the original orphan medicinal product is unable to supply sufficient quantities.

The  ten-year  market  exclusivity  in  the  EU  may  be  reduced  to  six  years  if,  at  the  end  of  the  fifth  year,  it  is
established  that  the  product  no  longer  meets  the  criteria  for  which  it  received  orphan  designation,  including  where  it  is
shown that the product is sufficiently profitable not to justify maintenance of market exclusivity, or where the prevalence of
the  condition  has  increased  above  the  threshold.  Additionally  granting  of  an  authorization  for  another  similar  orphan
medicinal  product  where  another  product  has  market  exclusivity  can  happen  at  any  time:  (i)  the  second  applicant  can
establish that its product, although similar, is safer, more effective or otherwise clinically superior; (ii) the applicant cannot
supply  enough  orphan  medicinal  product  or  (iii)  where  the  applicant  consents  to  a  second  orphan  medicinal  product
application.  Orphan drug designation does not, in itself, convey any advantage in, or shorten the duration of, the regulatory
review and authorization process.

In  connection  with  IMCIVREE’s  approval,  the  FDA  granted  us  seven  years  of  orphan  drug  exclusivity  for
setmelanotide for chronic weight management in adult and pediatric patients 6 years of age and older with obesity due to
POMC,  PCSK1,  or  LEPR  deficiency  confirmed  by  genetic  testing  demonstrating  variants  in  POMC,  PCSK1,  or  LEPR
genes  that  are  interpreted  as  pathogenic,  likely  pathogenic,  or  of  uncertain  significance,  and  in  the  EU,  we  obtained  ten
years  of  market  exclusivity  for  setmelanotide  for  the  treatment  of  obesity  and  the  control  of  hunger  associated  with
genetically  confirmed  loss-of-function  biallelic  POMC,  including  PCSK1,  deficiency  or  biallelic  leptin  receptor  (LEPR)
deficiency in adults and children 6 years of age and above.

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We  have  also  been  granted  orphan  drug  designation  for  setmelanotide  for  the  treatment  of  BBS  and  Alström
syndrome in both the United States and the EU. Setmelanotide has also been granted orphan designation for setmelanotide
in treating Prader-Willi syndrome in the EU. There can be no assurance that we will be able to maintain the benefits orphan
drug exclusivity, or that the FDA or the European Commission will grant orphan designations for setmelanotide for other
uses. In addition, orphan drug designation neither shortens the development time or regulatory review time of a drug nor
gives the drug any advantage in the regulatory review or approval process.

Even though we have obtained orphan drug exclusivity for certain uses of setmelanotide, such exclusivities may
not effectively protect setmelanotide from competition because different drugs can be approved for the same condition. In
the United States, even after an orphan drug is approved, the FDA may subsequently approve another drug for the same
condition if the FDA concludes that the latter drug is not the same drug or is clinically superior in that it is shown to be
safer, more effective or makes a major contribution to patient care.  As discussed above, similar rules apply in the EU.

Although we have obtained PRIME designation in the EU for setmelanotide for the treatment of obesity and the control
of hunger associated with deficiency disorders of the MC4R receptor pathway and Breakthrough Therapy designation
for setmelanotide for the treatment of obesity associated with certain genetic defects upstream of the MC4R in the leptin
melanocortin pathway, which includes POMC deficiency obesity, LEPR deficiency obesity, Bardet Biedl syndrome and
Alström syndrome in the United States, the FDA may rescind the Breakthrough Therapy Designation and we may be
unable to obtain Breakthrough Therapy designation for other uses. In addition, Breakthrough Therapy designation by
the  FDA  or  PRIME  designation  by  the  EMA  may  not  lead  to  a  faster  development,  regulatory  review  or  approval
process,  and  it  does  not  increase  the  likelihood  that  setmelanotide  will  receive  additional  marketing  approvals  in  the
United States or additional marketing authorizations in the EU.

The FDA is authorized under the FDCA to give certain product candidates “Breakthrough Therapy designation.”
A Breakthrough Therapy product candidate is defined as a product candidate that is intended, alone or in combination with
one  or  more  other  drugs,  to  treat  a  serious  or  life  threatening  disease  or  condition  and  preliminary  clinical  evidence
indicates  that  such  product  candidate  may  demonstrate  substantial  improvement  on  one  or  more  clinically  significant
endpoints  over  existing  therapies.  The  FDA  will  seek  to  ensure  the  sponsor  of  Breakthrough  Therapy  product  candidate
receives  intensive  guidance  on  an  efficient  drug  development  program,  intensive  involvement  of  senior  managers  and
experienced staff on a proactive, collaborative and cross disciplinary review. In addition, the FDA may consider reviewing
portions of an NDA before the sponsor submits the complete application, or rolling review. Product candidates designated
as breakthrough therapies by the FDA may be eligible for other expedited programs, such as priority review, if supported
by clinical data.

Designation  as  Breakthrough  Therapy  is  within  the  discretion  of  the  FDA.  Accordingly,  even  if  we  believe
setmelanotide meets the criteria for designation as Breakthrough Therapy, the FDA may disagree. In any event, the receipt
of Breakthrough Therapy designation for a product candidate, or acceptance for one or more of the FDA’s other expedited
programs,  may  not  result  in  a  faster  development  process,  review  or  approval  compared  to  products  considered  for
approval under conventional FDA procedures and does not guarantee ultimate approval by the FDA. Regulatory standards
to demonstrate safety and efficacy must still be met. Additionally, the FDA may later decide that the product candidate no
longer meets the conditions for designation and may withdraw designation at any time or decide that the time period for
FDA review or approval will not be shortened.

The  PRIME  scheme  was  launched  by  the  EMA  in  2016.  In  the  EU,  innovative  products  that  target  an  unmet
medical need and are expected to be of major public health interest may be eligible for a number of expedited development
and  review  programs,  such  as  the  PRIME  scheme,  which  provides  incentives  similar  to  the  Breakthrough  Therapy
designation in the United States. PRIME is a voluntary scheme aimed at enhancing the EMA’s support for the development
of  medicines  that  target  unmet  medical  needs.  It  is  based  on  increased  interaction  and  early  dialogue  with  companies
developing promising medicines, to optimize their product development plans and speed up their evaluation to help them
reach patients earlier. The benefits of a PRIME designation include the appointment of a rapporteur before submission of a
marketing authorization application, early dialogue and scientific advice at key development milestones, and the potential
to qualify products for accelerated review earlier in the application process. In late June 2018, setmelanotide was granted
eligibility  to  PRIME  by  the  CHMP  for  the  treatment  of  obesity  and  the  control  of  hunger  associated  with  deficiency
disorders of the MC4R receptor pathway. Acknowledging that setmelanotide targets an unmet medical need, the EMA

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offers enhanced support in the development of the medicinal product through enhanced interaction and early dialogue to
optimize our development plans and speed up regulatory evaluation in the EU. As part of this designation, the EMA has
provided  guidance  to  us  concerning  the  development  of  setmelanotide.  The  PRIME  designation  does  not,  however,
guarantee  that  the  regulatory  review  process  in  the  EU  will  be  shorter  or  less  demanding.  Neither  does  the  PRIME
designation guarantee that the European Commission will grant additional marketing authorizations for setmelanotide.

We  may  not  be  able  to  translate  the  once-daily  formulations  of  setmelanotide  for  methods  of  delivery  that  would  be
acceptable to the FDA or other equivalent competent authorities in foreign jurisdictions or commercially successful.

Setmelanotide is currently administered by once-daily SC injection using small insulin type needles and syringes.
SC injection is generally less well received by patients than other methods of administration, such as oral administration.
Considerable additional resources and efforts, including potential studies, may be necessary in order to translate the once-
daily formulation of setmelanotide into a once-weekly formulation that may be well received by patients.

We have entered into a license agreement with Camurus AB, or Camurus, for the use of Camurus’ drug delivery
technology,  FluidCrystal,  to  formulate  once-weekly  setmelanotide.  This  formulation,  if  successfully  developed  for
setmelanotide, and approved by the FDA and other regulatory authorities, will be delivered subcutaneously, similar to our
once-daily  formulation,  except  that  we  anticipate  it  will  be  injected  once  weekly.  In  addition,  we  have  initiated
development of an auto-injector device designed to make administration of our once-weekly product candidate easier and
more convenient for our patients.

While we have started consultations with regulatory authorities about the potential path for approval of the once-
weekly  formulation,  we  cannot  yet  estimate  the  requirements  for  non-clinical  and  clinical  data,  manufacturing  program,
time,  cost,  and  probability  of  success  for  approval.  Regulatory  authorities  have  limited  experience  evaluating  Camurus’
formulations,  which  further  complicates  our  understanding  regarding  the  information  that  may  be  required  to  obtain
approval of a once-weekly formulation.

We  received  FDA  approval  of  the  once-daily  formulation  in  the  initial  NDA  submission  for  chronic  weight
management in patients six years of age and older with obesity due to POMC, PCSK1 or LEPR deficiencies, as confirmed
by genetic testing, and plan to seek approval of the once-weekly formulation at a later time.  While we plan to develop the
once-weekly formulation, or to develop other new and useful formulations and delivery technology for setmelanotide, we
cannot estimate the probability of success, nor the resources and time needed to succeed. If we are unable to gain approval
and utilize the once-weekly formulation, or to develop new formulations, setmelanotide may not achieve significant market
acceptance and our business, financial condition and results of operations may be materially harmed.

Our approach to treating patients with MC4R pathway deficiencies requires the identification of patients with unique
genetic subtypes, for example, POMC genetic deficiency. The FDA or other equivalent competent authorities in foreign
jurisdictions could require the clearance, approval or certification of an in vitro companion diagnostic device to ensure
appropriate selection of patients as a condition of approving setmelanotide in additional indications. The requirement
that we obtain clearance, approval or certification of an in vitro companion diagnostic device will require substantial
financial  resources,  and  could  delay  or  prevent  the  receipt  of  additional  regulatory  approvals  for  setmelanotide,  or
adversely affect those we have already obtained.

We  have  focused  our  development  of  setmelanotide  as  a  treatment  for  obesity  caused  by  certain  genetic
deficiencies affecting the MC4R pathway. To date, we have employed in vitro genetic diagnostic testing to select patients
for  enrollment  in  our  clinical  trials,  including  our  clinical  trials  for  IMCIVREE  and  for  other  potential  indications  for
setmelanotide. If the safe and effective use of any of our product candidates depends on an in vitro diagnostic that is not
otherwise  commercially  available,  then  the  FDA  may  require  approval  or  clearance  of  that  diagnostic,  known  as  a
companion diagnostic, at the same time as, or in connection with, the FDA approval of such product candidates.

In the EU, in vitro diagnostic medical devices are regulated by Directive 98/79/EC, or the IVDD. The regulation
of companion diagnostics will be subject to further requirements once the in-vitro diagnostic medical devices Regulation
No  2017/746,  or  the  IVDR,  will  become  applicable  on  May  26,  2022.  However  on  October  14,  2021,  the  European
Commission proposed a “progressive” roll-out of the IVDR to prevent disruption in the supply of in vitro diagnostic

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medical devices. The European Parliament and Council adopted the proposed regulation on December 15, 2021. The IVDR
will fully apply on May 26, 2022 but there will be a tiered system extending the grace period for many devices (depending
on  their  risk  classification)  before  they  have  to  be  fully  compliant  with  the  regulation. The  IVDR  introduces  a  new
classification system for companion diagnostics which are now specifically defined as diagnostic tests that support the safe
and  effective  use  of  a  specific  medicinal  product,  by  identifying  patients  that  are  suitable  or  unsuitable  for  treatment.
Companion  diagnostics  will  have  to  undergo  a  conformity  assessment  by  a  notified  body.  Before  it  can  issue  a  CE
certificate, the notified body must seek a scientific opinion from the EMA on the suitability of the companion diagnostic to
the medicinal product concerned if the medicinal product falls exclusively within the scope of the centralized procedure for
the  authorization  of  medicines,  or  the  medicinal  product  is  already  authorized  through  the  centralized  procedure,  or  a
marketing authorization application for the medicinal product has been submitted through the centralized procedure. For
other substances, the notified body can seek the opinion from a national competent authorities or the EMA. Compliance
with the new requirements may impact our development plans for setmelanotide.

If  the  FDA  or  a  comparable  regulatory  authority  requires  clearance,  approval  or  certification  of  a  companion
diagnostic  for  setmelanotide,  any  delay  or  failure  by  us  or  our  current  and  future  collaborators  to  develop  or  obtain
regulatory clearance or approval of, or certification of, such tests, if necessary, could delay or prevent us from obtaining
additional  approvals  for  setmelanotide,  or  adversely  affect  the  approvals  we  have  already  obtained.  For  example,  in
November 2020, the FDA approved IMCIVREE for chronic weight management in adult and pediatric patients 6 years of
age  and  older  with  obesity  due  to  POMC,  PCSK1,  or  LEPR  deficiencies  confirmed  by  genetic  testing  demonstrating
variants  in  POMC,  PCSK1,  or  LEPR  genes  that  are  interpreted  as  pathogenic,  likely  pathogenic,  or  of  uncertain
significance. Although the FDA did not require that we obtain approval of a companion diagnostic prior to approving the
New  Drug  Application,  or  NDA,  for  IMCIVREE,  in  connection  with  the  NDA  approval  we  agreed  as  a  post-marketing
commitment to conduct adequate analytical and clinical validation testing to develop and establish an in vitro companion
diagnostic device to accurately and reliably detect patients with variants in the POMC, PCSK1, and LEPR genes that may
benefit  from  setmelanotide  therapy.  In  September  2020,  our  collaboration  partner,  Prevention  Genetics,  submitted  a  de
novo request seeking FDA authorization to market such an in vitro companion diagnostic device for IMCIVREE as a Class
II  medical  device.  In  December  2020,  the  FDA  sent  Prevention  Genetics  a  major  deficiency  letter  in  response  to  the  de
novo request, which among other things, placed the review on hold and requested additional information needed to support
the  requested  device  classification.  In  January  2022,  the  FDA  granted  the  de  novo  request  for  classification  for  the
POMC/PCSK1/LEPR  CDx  Panel  for  market  authorization  as  a  Class  II  device.  If  the  FDA  or  a  comparable  regulatory
authority  requires  clearance,  approval  or  certification  of  a  companion  diagnostic  when  we  seek  additional  approvals  for
setmelanotide, any delay or failure by us or our current and future collaborators to develop or obtain regulatory clearance
or  approval  of,  or  certification  of,  such  tests,  if  necessary,  could  delay  or  prevent  us  from  obtaining  such  additional
approvals for setmelanotide, or adversely affect the approvals we have already obtained.

We rely, and expect that we will continue to rely, on third parties to conduct clinical trials for setmelanotide. If these
third  parties  do  not  successfully  carry  out  their  contractual  duties  or  meet  expected  deadlines,  we  may  not  be  able  to
obtain  additional  regulatory  approvals  for  or  commercialize  setmelanotide  and  our  business  could  be  substantially
harmed.

We  have  agreements  with  third  party  CROs  to  operationalize,  provide  monitors  for  and  to  manage  data  for  our
ongoing  clinical  trials.  We  rely  heavily  on  these  parties  for  the  execution  of  clinical  trials  for  setmelanotide  and  control
only  certain  aspects  of  their  activities.  As  a  result,  we  have  less  direct  control  over  the  start-up,  conduct,  timing  and
completion of these clinical trials, and the management of data developed through the clinical trials than would be the case
if we were relying entirely upon our own staff. Communicating with outside parties can also be challenging, potentially
leading  to  mistakes  as  well  as  difficulties  in  coordinating  activities.  However,  we  remain  responsible  for  the  conduct  of
these trials and are subject to enforcement which may include civil and criminal liabilities for any violations of FDA rules
and regulations and the comparable foreign regulatory provisions during the conduct of our clinical trials. Outside parties
may:

● have staffing difficulties;

● fail to comply with contractual obligations;

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● devote inadequate resources to our clinical trials;

● experience regulatory compliance issues;

● undergo changes in priorities or become financially distressed; or

● form more favorable relationships with other entities, some of which may be our competitors.

These factors, among others,  may materially adversely affect the willingness or ability of third parties to conduct
our  clinical  trials  and  may  subject  us  to  unexpected  cost  increases  that  are  beyond  our  control.  Nevertheless,  we  are
responsible for ensuring that each of our studies is conducted in accordance with the applicable protocol, legal, regulatory
and scientific standards, and our reliance on CROs does not relieve us of our regulatory responsibilities. We and our CROs
are required to comply with GCPs, which are guidelines enforced by the FDA, the competent authorities of the EU member
states and equivalent competent authorities in foreign jurisdictions for any products in clinical development. The FDA and
foreign  regulatory  authorities  enforce  these  regulations  and  GCP  guidelines  through  periodic  inspections  of  clinical  trial
sponsors,  principal  investigators,  and  trial  sites,  and  IRBs.  If  we  or  our  CROs  fail  to  comply  with  applicable  GCPs,  the
clinical  data  generated  in  our  clinical  trials  may  be  deemed  unreliable  and  the  FDA  or  other  equivalent  competent
authorities  in  foreign  jurisdictions  may  require  us  to  perform  additional  clinical  trials  before  approving  our  marketing
applications. We cannot assure you that, upon inspection, the FDA or foreign regulatory authorities will determine that any
of our clinical trials comply with GCPs. In addition, our clinical trials must be conducted with products produced under
current Good Manufacturing Practices, or cGMPs and similar foreign requirements. Our failure or the failure of our CROs
to comply with these regulations may require us to repeat clinical trials, which would delay the regulatory approval process
and could also subject us to enforcement action up to and including civil and criminal penalties.

If any of our relationships with these third party CROs terminate, we may not be able to enter into arrangements
with  alternative  CROs.  If  CROs  do  not  successfully  carry  out  their  contractual  duties  or  obligations  or  meet  expected
deadlines, if they need to be replaced or if the quality or accuracy of the clinical data they obtain are compromised due to
the failure to adhere to our clinical protocols, regulatory requirements or for other reasons, any such clinical trials may be
extended, delayed or terminated, and we may not be able to obtain regulatory approval for, or successfully commercialize,
setmelanotide. As a result, our financial results and the commercial prospects for setmelanotide in the subject indication
would be harmed, our costs could increase and our ability to generate revenue could be delayed.

Risks Related to the Commercialization of IMCIVREE (setmelanotide)

The successful commercialization of IMCIVREE and any other product candidates for which we obtain approval will
depend in part on the extent to which governmental authorities, private health insurers, and other third-party payors
provide  coverage  and  adequate  reimbursement  levels.  Failure  to  obtain  or  maintain  coverage  and  adequate
reimbursement for IMCIVREE or our other product candidates, if any and if approved, could limit our ability to market
those products and decrease our ability to generate revenue.

Our  ability  to  successfully  commercialize  IMCIVREE  or  any  other  product  candidates  for  which  we  obtain
approval will depend in part on the extent to which coverage and reimbursement for these product candidates and related
treatments  will  be  available  from  government  authorities,  private  health  insurers  and  other  organizations.  Government
authorities  and  third-party  payors,  such  as  private  health  insurers  and  health  maintenance  organizations,  decide  which
medications they will pay for and establish reimbursement levels.

Increasing  efforts  by  governmental  and  third-party  payors  in  the  United  States  and  abroad  to  cap  or  reduce
healthcare costs may cause such organizations to limit both coverage and the level of reimbursement for newly approved
products,  such  as  IMCIVREE,  and,  as  a  result,  they  may  not  cover  or  provide  adequate  payment.  Even  if  we  show
improved efficacy or improved convenience of administration, third-party payors may deny or revoke the reimbursement
status  of  our  product  candidates,  if  approved,  or  establish  prices  for  our  product  candidates  at  levels  that  are  too  low  to
enable us to realize an appropriate return on our investment. If reimbursement is not available or is available only at limited
levels, we may not be able to successfully commercialize IMCIVREE or other product candidates, and may not be able to
obtain a

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satisfactory  financial  return.  Further,  as  we  continue  to  grow  as  an  organization,  previously-established  prices  may  no
longer be sufficient and could create additional pricing pressure for us.

No  uniform  policy  for  coverage  and  reimbursement  for  products  exist  among  third-party  payors  in  the  United
States. Therefore, coverage and reimbursement for products can differ significantly from payor to payor. As a result, the
coverage determination process is often a time-consuming and costly process that may require us to provide scientific and
clinical  support  for  the  use  of  IMCIVREE  to  each  payor  separately,  with  no  assurance  that  coverage  and  adequate
reimbursement will be applied consistently or obtained in the first instance. Furthermore, rules and regulations regarding
reimbursement change frequently, in some cases on short notice, and we believe that changes in these rules and regulations
are likely.

In  some  foreign  countries,  particularly  in  Canada,  Great  Britain  and  in  the  EU  member  states,  the  pricing  and
reimbursement  of  prescription  only  medicinal  products  is  subject  to  strict  governmental  control  which  varies  widely
between countries. In these countries, pricing negotiations with governmental authorities can take six to twelve months or
longer after the receipt of regulatory approval and product launch. To obtain favorable reimbursement for the indications
sought  or  pricing  approval  in  some  countries,  we  may  be  required  to  conduct  a  clinical  trial  that  compares  the  cost
effectiveness of IMCIVREE with other available therapies. If reimbursement for IMCIVREE is unavailable in any country
in which we seek reimbursement, if it is limited in scope or amount, if it is conditioned upon our completion of additional
clinical trials or if pricing is set at unsatisfactory levels, our operating results could be materially adversely affected.

In the EU, in particular, each EU member state can restrict the range of medicinal products for which its national
health insurance system provides reimbursement and can control the prices of medicinal products for human use marketed
in its territory. As a result, following receipt of marketing authorization in an EU member state, through any application
route, an applicant is required to engage in pricing discussions and negotiations with the competent pricing authority in the
individual  EU  member  states.  Some  EU  member  states  operate  positive  and  negative  list  systems  under  which  products
may only be marketed once a reimbursement price has been agreed upon. Other EU member states approve a specific price
for the medicinal product or may instead adopt a system of direct or indirect controls on the profitability of the company
placing  the  medicinal  product  on  the  market.  The  downward  pressure  on  healthcare  costs  in  general,  particularly
prescription drugs, has become more intense. As a result, increasingly high barriers are being erected to the entry of new
products. In addition, we may face competition for IMCIVREE from lower priced products in foreign countries that have
placed price controls on pharmaceutical products.

Health Technology Assessment, or HTA, of medicinal products, however, is becoming an increasingly common
part of the pricing and reimbursement procedures in the United Kingdom and some EU member states, including France,
Germany,  Italy,  Spain,  the  Netherlands,  Belgium,  Norway  and  Sweden.  HTA  is  the  procedure  according  to  which  the
assessment  of  the  public  health  impact,  therapeutic  impact  and  the  economic  and  societal  impact  of  use  of  a  given
medicinal product in the national healthcare systems of the individual country is conducted. HTA generally focuses on the
clinical  efficacy  and  effectiveness,  safety,  cost,  and  cost  effectiveness  of  individual  medicinal  products  as  well  as  their
potential implications for the healthcare system. Those elements of medicinal products are compared with other treatment
options  available  on  the  market.  The  outcome  of  HTA  regarding  specific  medicinal  products  will  often  influence  the
pricing  and  reimbursement  status  granted  to  these  medicinal  products  by  the  competent  authorities  of  individual  EU
member  states.  The  extent  to  which  pricing  and  reimbursement  decisions  are  influenced  by  the  HTA  of  the  specific
medicinal product varies between EU member states. In addition, pursuant to Directive 2011/24/EU on the application of
patients’ rights in cross border healthcare, a voluntary network of national authorities or bodies responsible for HTA in the
individual  EU  member  states  was  established.  The  purpose  of  the  network  is  to  facilitate  and  support  the  exchange  of
scientific information concerning HTAs. This may lead to harmonization of the criteria taken into account in the conduct of
HTAs between EU member states and in pricing and reimbursement decisions and may negatively affect price in at least
some EU member states.

On  January  15,  2021,  Regulation  No  2021/2282  on  HTA,  amending  Directive  2011/24/EU,  was  adopted.  This
regulation  intends  to  boost  cooperation  among  EU  member  states  in  assessing  health  technologies,  including  new
medicinal products, and providing the basis for cooperation at the EU level for joint clinical assessments in these areas.
The  regulation  foresees  a  three-year  transitional  period  and  will  permit  EU  member  states  to  use  common  HTA  tools,
methodologies, and procedures across the EU, working together in four main areas, including joint clinical assessment of

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the  innovative  health  technologies  with  the  most  potential  impact  for  patients,  joint  scientific  consultations  whereby
developers  can  seek  advice  from  HTA  authorities,  identification  of  emerging  health  technologies  to  identify  promising
technologies early, and continuing voluntary cooperation in other areas. Individual EU member states will continue to be
responsible for assessing non-clinical (e.g., economic, social, ethical) aspects of health technology, and making decisions
on pricing and reimbursement.

If we are unable to establish sales and marketing capabilities or enter into agreements with third parties to market and
sell IMCIVREE, we may not be able to generate any revenue.

In  order  to  market  IMCIVREE,  we  must  continue  to  build  our  sales,  marketing,  managerial  and  other  non-
technical capabilities or make arrangements with third parties to perform these services. Although we have received FDA
approval  for  IMCIVREE,  for  chronic  weight  management  in  adult  and  pediatric  patients  6  years  of  age  and  older  with
obesity  due  to  POMC,  PCSK1  or  LEPR  deficiency,  and  the  European  Commission  and  MHRA  granted  marketing
authorization  to  IMCIVREE,  for  the  treatment  of  obesity  and  the  control  of  hunger  associated  with  confirmed  loss-of-
function biallelic POMC, including PCSK1, deficiency or biallelic LEPR deficiency in adults and children 6 years of age
and  above,  we  are  early  in  our  commercialization  efforts  and  have  not  yet  established  a  full-scale  commercial
infrastructure. Therefore, you should not compare us to commercial-stage biotechnology companies, and you should not
expect  that  we  will  generate  substantial  revenues  or  become  profitable  in  the  near  term.  If  we  are  unable  to  establish
adequate sales, marketing and distribution capabilities, whether independently or with third parties, or if we are unable to
do so on commercially reasonable terms, our business, results of operations, financial condition and prospects would be
materially adversely affected.

We may never receive regulatory approval to market setmelanotide outside of the United States, the European Union
and Great Britain.

We intend to seek marketing authorizations in various countries worldwide. In order to market any product outside
of the United States, the EU or Great Britain, we must establish and comply with the numerous and varying safety, efficacy
and  other  regulatory  requirements  of  other  countries.  Marketing  authorization  procedures  vary  among  countries  and  can
involve  additional  setmelanotide  testing  and  additional  administrative  review  periods.  The  time  required  to  obtain
marketing  authorization  in  other  countries  might  differ  from  that  required  to  obtain  FDA  approval  or  marketing
authorization from the European Commission or the MHRA. The marketing authorization processes in other countries may
implicate all of the risks detailed above regarding FDA approval in the United States as well as other risks. In particular, in
many countries outside of the United States and Europe, products must receive pricing and reimbursement approval before
the product can be commercialized. Obtaining this approval can result in substantial delays in bringing products to market
in  such  countries.  Grant  of  marketing  authorization  in  one  country  does  not  ensure  grant  of  marketing  authorization  in
another country, but a failure or delay in obtaining marketing authorization in one country may have a negative effect on
the regulatory process or commercial activities in others. Failure to obtain marketing authorization in other countries or any
delay or other setback in obtaining such authorizations would impair our ability to market setmelanotide in such foreign
markets.  Any  such  impairment  would  reduce  the  size  of  our  potential  market  share  and  could  have  a  material  adverse
impact on our business, results of operations and prospects.

We may not achieve market acceptance for IMCIVREE, which would limit the revenue that we generate from the sale
of IMCIVREE.

The  commercial  success  of  IMCIVREE  will  also  depend  upon  the  awareness  and  acceptance  of  IMCIVREE
within the medical community, including physicians, patients and third party payors. If IMCIVREE does not achieve an
adequate  level  of  acceptance  by  patients,  physicians  and  third  party  payors,  we  may  not  generate  sufficient  revenue  to
become or remain profitable. Before granting reimbursement approval, third party payors may require us to demonstrate
that, in addition to treating obesity caused by certain genetic deficiencies affecting the MC4R pathway, IMCIVREE also
provides incremental health benefits to patients. Our efforts to educate the medical community and third party payors about
the  benefits  of  IMCIVREE  may  require  significant  resources  and  may  never  be  successful.  All  of  these  challenges  may
impact our ability to ever successfully market and sell IMCIVREE.

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Market acceptance of IMCIVREE will depend on a number of factors, including, among others:

● the ability of IMCIVREE to provide chronic weight management in patients with obesity caused by certain
genetic deficiencies affecting the MC4R pathway and, if required by any competent authority in connection
with  the  approval  for  these  indications,  to  provide  patients  with  incremental  health  benefits,  as  compared
with other available treatments, therapies, devices or surgeries;

● the  complexities  of  genetic  testing,  including  obtaining  genetic  results  that  support  patient  treatment  with

IMCIVREE;

● the relative convenience and ease of SC injections as the necessary method of administration of IMCIVREE,

including as compared with other treatments for patients with obesity;

● the prevalence and severity of any adverse side effects associated with IMCIVREE;

● limitations  or  warnings  contained  in  the  labeling  approved  for  IMCIVREE  by  the  FDA  or  the  specific
obligations  imposed  as  a  condition  for  marketing  authorization  imposed  by  other  equivalent  competent
authorities in foreign jurisdictions, particularly by the European Commission;

● availability of alternative treatments, including a number of obesity therapies already approved or expected

to be commercially launched in the near future;

● our ability to increase awareness of these diseases among our target populations through marketing and other

cross-functional efforts;

● the  size  of  the  target  patient  population,  and  the  willingness  of  the  target  patient  population  to  try  new

therapies and of physicians to prescribe these therapies;

● the  ability  of  IMCIVREE  to  treat  the  maximum  range  of  pediatric  patients,  and  any  limitations  on  its

indications for use;

● the strength of marketing and distribution support and timing of market introduction of competitive products;

● publicity concerning IMCIVREE or competing products and treatments;

● pricing and cost effectiveness;

● the effectiveness of our sales and marketing strategies;

● our ability to increase awareness of IMCIVREE through marketing efforts;

● our ability to obtain sufficient third-party coverage or reimbursement;

● the willingness of patients to pay out-of-pocket in the absence of third-party coverage; and

● the  likelihood  that  competent  authorities  in  foreign  jurisdictions  may  require  development  of  a  REMS  or
other  specific  obligations  as  a  condition  of  approval  or  post-approval,  may  not  agree  with  our  proposed
REMS  or  other  specific  obligations,  or  may  impose  additional  requirements  that  limit  the  promotion,
advertising, distribution or sales of IMCIVREE.

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Our industry is intensely competitive. If we are not able to compete effectively against current and future competitors,
we  may  not  be  able  to  generate  revenue  from  the  sale  of  IMCIVREE,  our  business  will  not  grow  and  our  financial
condition and operations will suffer.

The  biotechnology  and  pharmaceutical  industries  are  intensely  competitive  and  subject  to  rapid  and  significant
technological change. We have competitors in a number of jurisdictions, many of which have substantially greater name
recognition,  commercial  infrastructures  and  financial,  technical  and  personnel  resources  than  we  have.  Established
competitors  may  invest  heavily  to  quickly  discover  and  develop  compounds  that  could  make  IMCIVREE  obsolete  or
uneconomical. Any new product that competes with an approved product may need to demonstrate compelling advantages
in efficacy, convenience, tolerability and safety to be commercially successful. In addition, payers may require that patients
try  other  medications  known  as  step  therapy  or  a  “step-edit,”  including  medications  approved  for  treatment  of  general
obesity, before receiving reimbursement for IMCIVREE. Other competitive factors, including generic competition, could
force us to lower prices or could result in reduced sales. In addition, new products developed by others could emerge as
competitors  to  IMCIVREE.  If  we  are  not  able  to  compete  effectively  against  our  current  and  future  competitors,  our
business will not grow and our financial condition and operations will suffer.

Currently, IMCIVREE is the only approved treatment for providing chronic weight management in patients with
obesity due to POMC, PCSK1 or LEPR deficiencies, and there are no approved treatments for chronic weight management
in patients with BBS, Alström syndrome, deficiencies due to a variant in one of the two alleles in the POMC, PCSK1, or
LEPR  genes  (HET  obesity),  SRC1  deficiency  obesity,  SH2B1  deficiency  obesity,  MC4R  deficiency  obesity,  and
hypothalamic  obesity.  Bariatric  surgery  is  not  a  good  treatment  option  for  these  genetic  diseases  of  obesity  because  the
severe obesity and hyperphagia associated with these diseases are considered to be risk factors for bariatric surgery. Also,
existing  therapies  indicated  for  general  obesity,  including  glucagon-like  peptide-1  (GLP-1)  receptor  agonists,  such  as
Wegovy®, and glucose-dependent insulinotropic polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) agonists, such as
tirzepatide which is being investigated as a treatment for obesity, do not specifically restore function impaired by genetic
deficiencies in the MC4R pathway, which we believe is the root cause of hyperphagia and obesity in patients with MC4R
genetic  variants.  Based  on  search  results  from  ClinicalTrials.gov,  we  are  unaware  of  any  competitive  products  in
therapeutic clinical studies for the obesity and hyperphagia caused by upstream MC4R pathway deficiencies specifically,
however LG Chem has represented it is in early-stage clinical development of an MC4R agonist. New competitors may
emerge which could limit our business opportunity in the future.

We face potential product liability exposure, and, if claims are brought against us, we may incur substantial liability.

The use of setmelanotide in clinical trials and the sale of IMCIVREE exposes us to the risk of product liability
claims. Product liability claims might be brought against us by patients, healthcare providers or others selling or otherwise
coming into contact with IMCIVREE. For example, we may be sued if any product we develop allegedly causes injury or
is  found  to  be  otherwise  unsuitable  during  product  testing,  manufacturing,  marketing  or  sale.  Any  such  product  liability
claims may include allegations of defects in manufacturing, defects in design or a failure to warn of dangers inherent in the
product,  including  as  a  result  of  interactions  with  alcohol  or  other  drugs,  negligence,  strict  liability  and  a  breach  of
warranties.  Claims  could  also  be  asserted  under  state  consumer  protection  laws  and  any  equivalent  laws  in  foreign
countries. If we become subject to product liability claims and cannot successfully defend ourselves against them, we could
incur  substantial  liabilities.  In  addition,  regardless  of  merit  or  eventual  outcome,  product  liability  claims  may  result  in,
among other things:

● withdrawal of patients from our clinical trials;

● substantial monetary awards to patients or other claimants;

● decreased  demand  for  IMCIVREE  or  any  future  product  candidates  following  marketing  approval,  if

obtained;

● damage to our reputation and exposure to adverse publicity;

● litigation costs;

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● distraction of management’s attention from our primary business;

● loss of revenue; and

● the inability to successfully commercialize IMCIVREE or any future product candidates, if approved.

We  maintain  product  liability  insurance  coverage  for  our  clinical  trials  and  commercial  product  with  a
$10.0  million  annual  aggregate  coverage  limit.  Our  insurance  coverage  may  be  insufficient  to  reimburse  us  for  any
expenses  or  losses  we  may  suffer.  Moreover,  in  the  future,  we  may  not  be  able  to  maintain  insurance  coverage  at  a
reasonable cost or in sufficient amounts to protect us against losses, including if insurance coverage becomes increasingly
expensive. Large judgments have been awarded in class action lawsuits based on drugs that had unanticipated side effects.
The  cost  of  any  product  liability  litigation  or  other  proceedings,  even  if  resolved  in  our  favor,  could  be  substantial,
particularly in light of the size of our business and financial resources. A product liability claim or series of claims brought
against us could cause our stock price to decline and, if we are unsuccessful in defending such a claim or claims and the
resulting  judgments  exceed  our  insurance  coverage,  our  financial  condition,  business  and  prospects  could  be  materially
adversely affected.

We rely completely on third party suppliers to manufacture our clinical and commercial drug supplies of setmelanotide,
and  we  intend  to  rely  on  third  parties  to  produce  preclinical,  clinical  and  commercial  supplies  of  any  future  product
candidate.

We do not currently have, nor do we plan to acquire, the infrastructure or capability to manufacture our clinical
and commercial drug supply internally for setmelanotide, or any future product candidates, for use in the conduct of our
preclinical  studies  and  clinical  trials,  and  we  lack  the  internal  resources  and  the  capability  to  manufacture  any  product
candidate on a clinical or commercial scale. The facilities used by our contract manufacturing organizations, or CMOs, to
manufacture  the  active  pharmaceutical  ingredient,  or  API,  and  final  drug  product  must  pass  inspection  by  the  FDA  and
other equivalent competent authorities in foreign jurisdictions pursuant to inspections that have been and will be conducted
following submission of our NDAs or relevant foreign regulatory submission to the other equivalent competent authorities
in  foreign  jurisdictions.  Our  failure  or  the  failure  of  our  CMOs  to  pass  preapproval  inspection  of  the  manufacturing
facilities of setmelanotide could delay the regulatory approval process. In addition, our clinical trials must be conducted
with products produced under GMP and similar foreign regulations. Our failure or the failure of our CROs or CMOs to
comply with these regulations may require us to repeat clinical trials, which would delay the regulatory approval process
and could also subject us to enforcement action, including civil and criminal penalties. When we import any drugs or drug
substances,  we  would  be  subject  to  FDA,  United  States  Department  of  Agriculture,  and  U.S.  Bureau  of  Customs  and
Border Patrol import regulation requirements. Such enforcement for our failure or our CROs or CMOs’ failure to comply
with these regulations could result in import delays, detention of products, and, depending on criteria such as the history of
violative activities, the FDA could place a foreign firm or certain drug substances or products on Import Alert and require
that all such drug substances or products be subject to detention without physical examination which could significantly
impact the global supply chain for setmelanotide. With the exception of those on the FDA’s drug shortage list or properly
imported by individuals, the FDCA prohibits the importation of prescription drug products for commercial use if they were
manufactured  in  a  foreign  country,  unless  they  have  been  approved  or  are  otherwise  authorized  to  be  marketed  in  the
United States and are labeled accordingly.

We currently contract with third parties for the manufacture of setmelanotide and intend to continue to do so in the
future. We have entered into process development and manufacturing service agreements with our CMOs, Corden Pharma
Switzerland, LLC, or Corden, (formerly Peptisyntha SA prior to its acquisition by Corden), and Neuland Laboratories for
certain  process  development  and  manufacturing  services  for  regulatory  starting  materials  and/or  raw  materials  in
connection  with  the  manufacture  of  setmelanotide.  We  have  entered  into  long-term  commercial  supply  agreements  with
PolyPeptide Group and Recipharm Monts S.A.S. for manufacturing of drug substance and drug product for IMCIVREE.
Under our agreements, we pay these third parties for services in accordance with the terms of mutually agreed upon work
orders, which we may enter into from time to time. We may need to engage additional third party suppliers to manufacture
our clinical and/or commercial (subject to approval) drug supplies. We also have engaged other third parties to assist in,
among other things, distribution, post-approval safety reporting and pharmacovigilance activities. We cannot be certain that
we can engage third party suppliers on terms as favorable as those that are currently in place.

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We  do  not  perform  the  manufacturing  of  any  drug  products  and  are  completely  dependent  on  our  CMOs  to
comply  with  GMPs  and  similar  foreign  requirements  for  manufacture  of  both  drug  substance,  or  API  and  finished  drug
product. We recognize that we are ultimately responsible for ensuring that our drug substances and finished drug product
are manufactured in accordance with GMPs and similar foreign requirements, and, therefore, the company’s management
practices and oversight, including routine auditing, are critical. If our CMOs cannot successfully manufacture material that
conform to our specifications and the strict regulatory requirements of the FDA or other equivalent competent authorities
in foreign jurisdictions, they may be subject to administrative and judicial enforcement for non-compliance and the drug
products  would  be  deemed  misbranded  or  adulterated  and  prohibited  from  distribution  into  interstate  commerce.
Furthermore, all of our CMOs are engaged with other companies to supply and/or manufacture materials or products for
such companies, which exposes our manufacturers to regulatory risks for the production of such materials and products. As
a  result,  failure  to  satisfy  the  regulatory  requirements  for  the  production  of  those  other  company  materials  and  products
may affect the regulatory clearance of our CMOs’ facilities generally. In addition, satisfying the regulatory requirements
for  production  of  setmelanotide  with  multiple  suppliers,  while  assuring  more  robust  drug  availability  in  the  future,  adds
additional  complexity  and  risk  to  regulatory  approval.  If  the  FDA  or  another  equivalent  competent  foreign  regulatory
agency does not approve these facilities for the manufacture of setmelanotide or if it withdraws its approval in the future,
we  may  need  to  find  alternative  manufacturing  facilities,  which  would  adversely  impact  our  ability  to  develop,  obtain
regulatory approval for or market setmelanotide.

We are manufacturing finished drug product for use in our upcoming or ongoing clinical trials and for commercial
supply. We believe we currently have a sufficient amount of finished setmelanotide and placebo to complete our ongoing
and  planned  clinical  trials,  and  for  commercial  supply.  However,  these  projections  could  change  based  on  delays
encountered  with  manufacturing  activities,  equipment  scheduling  and  material  lead  times.  Any  such  delays  in  the
manufacturing of finished drug product could delay our planned clinical trials of setmelanotide and our commercial supply,
which could delay, prevent or limit our ability to generate revenue and continue our business.

Moreover,  as  a  result  of  the  COVID-19  pandemic,  certain  of  our  suppliers  and  CMOs  in  Europe  have  been
affected, which has disrupted their activities. As a result, we could face difficulty sourcing key components necessary to
produce supply of setmelanotide, which may negatively affect our clinical development and commercialization activities. If
the  COVID-19  coronavirus  further  impacts  business  operations,  including  our  CMOs  and  suppliers,  we  could  face
additional  disruption  to  our  supply  chain  that  could  affect  the  supply  of  drug  product  for  preclinical,  clinical  trial  and
commercial use. Additionally, as our CMOs are producers of drug substances and drug products, including vaccines and
therapeutics,  they  could  be  compelled  by  a  national  government,  or  choose  themselves,  to  shift  their  resources  to  the
production of a COVID-19 vaccine and/or therapeutics for COVID-19, which could disrupt any scheduled drug substance
or drug product batches we may have and may prevent us from obtaining supplies for our programs in a timely manner to
meet our development timelines.

We do not have long term supply agreements in place with all of our contractors involved with the manufacturing
of  our  weekly  formulation  of  setmelanotide.  We  currently  place  individual  batch  or  campaign  orders  with  the
CMOs/suppliers  that  are  individually  contracted  under  existing  master  services  and  quality  agreements  for  the  weekly
formulation  of  setmelanotide.  If  we  engage  new  contractors,  such  contractors  must  be  approved  by  the  FDA  and  other
equivalent  competent  authorities  in  foreign  jurisdictions.  We  will  need  to  submit  information  to  the  FDA  and  other
equivalent competent authorities in foreign jurisdictions describing the manufacturing changes. If manufacturing changes
occur post-approval, the FDA and foreign regulatory authorities may have to approve these changes. We plan to continue
to  rely  upon  CMOs  and,  potentially,  collaboration  partners  to  manufacture  commercial  quantities  of  setmelanotide.  Our
current scale of manufacturing appears adequate to support all of our current needs for clinical trial and initial commercial
supplies for setmelanotide. Going forward, we may need to identify additional CMOs or partners to produce setmelanotide
on a larger scale.

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The  exclusive  license  agreement  with  RareStone  Group  Ltd.,  or  RareStone,  is  important  to  our  business.  If  we  or
RareStone  fail  to  adequately  perform  under  the  agreement,  or  if  we  or  RareStone  terminate  the  agreement,  the
development of setmelanotide in certain indications and commercialization of IMCIVREE in certain markets would be
delayed or terminated and our business would be adversely affected.

In December 2021, we entered into an Exclusive License Agreement with RareStone, or the RareStone License.
Pursuant  to  the  RareStone  License,  we  granted  to  RareStone  an  exclusive,  sublicensable,  royalty-bearing  license  under
certain  patent  rights  and  know-how  to  develop,  manufacture,  commercialize  and  otherwise  exploit  any  pharmaceutical
product  that  contains  setmelanotide  in  the  diagnosis,  treatment  or  prevention  of  conditions  and  diseases  in  humans  in
China, including mainland China, Hong Kong and Macao. RareStone has a right of first negotiation in the event that the
Company chooses to grant a license to develop or commercialize the licensed product in Taiwan.

Termination  of  this  RareStone  License  could  cause  significant  delays  in  our  product  development  and
commercialization  efforts  for  setmelanotide  and  could  prevent  us  from  commercializing  IMCIVREE  in  the  markets
covered by the RareStone License without first expanding our internal capabilities or entering into another agreement with
a  third  party.  Any  alternative  collaboration  or  license  could  also  be  on  less  favorable  terms  to  us.  In  addition,  under  the
agreement,  RareStone  agreed  to  provide  funding  for  certain  clinical  development  activities.  If  the  agreement  were
terminated, we may need to refund those payments and seek additional financing to support the research and development
of  any  terminated  products  or  discontinue  any  terminated  products,  which  could  have  a  material  adverse  effect  on  our
business.

Under  the  RareStone  License,  we  are  dependent  upon  RareStone  to  successfully  commercialize  any  applicable
collaboration products in China, including mainland China, Hong Kong and Macao. We cannot directly control RareStone's
commercialization  activities  or  the  resources  it  allocates  to  setmelanotide.  Our  interests  and  RareStone's  interests  may
differ or conflict from time to time, or we may disagree with RareStone's level of effort or resource allocation. RareStone
may internally prioritize setmelanotide differently than we do or it may not allocate sufficient resources to effectively or
optimally commercialize setmelanotide. If these events were to occur, our business would be adversely affected.

Risks Related to Our Intellectual Property Rights

If  we  are  unable  to  adequately  protect  our  proprietary  technology  or  maintain  issued  patents  that  are  sufficient  to
protect setmelanotide, others could compete against us more directly, which would have a material adverse impact on
our business, results of operations, financial condition and prospects.

Our commercial success will depend in part on our success in obtaining and maintaining issued patents and other
intellectual  property  rights  in  the  United  States  and  elsewhere  and  protecting  our  proprietary  technology.  If  we  do  not
adequately protect our intellectual property and proprietary technology, competitors may be able to use our technologies
and  erode  or  negate  any  competitive  advantage  we  may  have,  which  could  harm  our  business  and  ability  to  achieve
profitability.

We cannot provide any assurances that any of our patents have, or that any of our pending patent applications that
mature  into  issued  patents  will  include,  claims  with  a  scope  sufficient  to  protect  setmelanotide.  Other  parties  have
developed  technologies  that  may  be  related  or  competitive  to  our  approach,  and  may  have  filed  or  may  file  patent
applications  and  may  have  received  or  may  receive  patents  that  may  overlap  with  our  patent  applications,  either  by
claiming  the  same  methods  or  formulations  or  by  claiming  subject  matter  that  could  dominate  our  patent  position.  The
patent positions of biotechnology and pharmaceutical companies, including our patent position, involve complex legal and
factual questions, and, therefore, the issuance, scope, validity and enforceability of any patent claims that we may obtain
cannot be predicted with certainty.

Although an issued patent is presumed valid and enforceable, its issuance is not conclusive as to its validity or its
enforceability and such patent may not provide us with adequate proprietary protection or competitive advantages against
competitors  with  similar  products.  Patents,  if  issued,  may  be  challenged,  deemed  unenforceable,  invalidated  or
circumvented. U.S. patents and patent applications or the patents and patent application obtained or submitted pursuant to

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comparable  foreign  laws,  may  also  be  subject  to  interference  proceedings,  ex  parte  reexamination,  inter  partes  review
proceedings, post-grant review proceedings, supplemental examination and challenges in court. Patents may be subjected
to  opposition  or  comparable  proceedings  lodged  in  various  foreign,  both  national  and  regional,  patent  offices.  These
proceedings could result in either loss of the patent or denial of the patent application or loss or reduction in the scope of
one or more of the claims of the patent or patent application. In addition, such proceedings may be costly. Thus, any patents
that  we  may  own  or  exclusively  license  may  not  provide  any  protection  against  competitors.  Furthermore,  an  adverse
decision in an interference proceeding can result in a third party receiving the patent right sought by us, which in turn could
affect our ability to develop, market or otherwise commercialize setmelanotide.

Competitors  may  also  be  able  to  design  around  our  patents.  Other  parties  may  develop  and  obtain  patent
protection  for  more  effective  technologies,  designs  or  methods.  The  laws  of  some  foreign  countries  do  not  protect  our
proprietary  rights  to  the  same  extent  as  the  laws  of  the  United  States,  and  we  may  encounter  significant  problems  in
protecting our proprietary rights in these countries. If these developments were to occur, they could have a material adverse
effect on our sales.

In addition, proceedings to enforce or defend our patents could put our patents at risk of being invalidated, held
unenforceable  or  interpreted  narrowly.  Such  proceedings  could  also  provoke  third  parties  to  assert  claims  against  us,
including that some or all of the claims in one or more of our patents are invalid or otherwise unenforceable. If any of our
patents  covering  setmelanotide  are  invalidated  or  found  unenforceable,  our  financial  position  and  results  of  operations
would  be  materially  and  adversely  impacted.  In  addition,  if  a  court  found  that  valid,  enforceable  patents  held  by  third
parties  covered  setmelanotide,  our  financial  position  and  results  of  operations  would  also  be  materially  and  adversely
impacted.

The degree of future protection for our proprietary rights is uncertain, and we cannot ensure that:

● any of our patents, or any of our pending patent applications, if issued, will include claims having a scope

sufficient to protect setmelanotide;

● any of our pending patent applications will issue as patents;

● we will be able to successfully commercialize IMCIVREE before our relevant patents expire;

● we were the first to make the inventions covered by each of our patents and pending patent applications;

● we were the first to file patent applications for these inventions;

● others will not develop similar or alternative technologies that do not infringe our patents;

● any of our patents will be found to ultimately be valid and enforceable;

● any patents issued to us will provide a basis for an exclusive market for our commercially viable products,

will provide us with any competitive advantages or will not be challenged by third parties;

● we will develop additional proprietary technologies or product candidates that are separately patentable; or

● our commercial activities or products will not infringe upon the patents of others.

We rely upon unpatented trade secrets, unpatented know-how and continuing technological innovation to develop
and maintain our competitive position, which we seek to protect, in part, by confidentiality agreements with employees,
consultants,  collaborators  and  vendors.  We  also  have  agreements  with  employees  and  selected  consultants  that  obligate
them to assign their inventions to us. It is possible that technology relevant to our business will be independently developed
by a person who is not a party to such an agreement. We may not be able to prevent the unauthorized disclosure or use of
our technical knowledge or trade secrets by consultants, collaborators, vendors, former employees and current employees.

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Furthermore, if the parties to our confidentiality agreements breach or violate the terms of these agreements, we may not
have  adequate  remedies  for  any  such  breach  or  violation,  and  we  could  lose  our  trade  secrets  through  such  breaches  or
violations. Further, our trade secrets could otherwise become known or be independently discovered by our competitors.

We  may  be  involved  in  lawsuits  to  protect  or  enforce  our  patents  or  the  patents  of  our  licensors,  which  could  be
expensive, time consuming and unsuccessful.

Competitors may infringe our patents or the patents of our licensors. To counter infringement or unauthorized use,
we may be required to file infringement claims, which can be expensive and time consuming and divert the attention of our
management  and  key  personnel  from  our  business  operations.  Even  if  we  prevail  in  any  lawsuits  that  we  initiate,  the
damages or other remedies awarded may not be commercially meaningful. In addition, in an infringement proceeding, a
court may decide that a patent of ours or our licensors is not valid, is unenforceable and/or is not infringed, or may refuse
to stop the other party from using the technology at issue on the grounds that our patents do not cover the technology in
question. An adverse result in any litigation or defense proceedings could put one or more of our patents at risk of being
invalidated or interpreted narrowly and could put our patent applications at risk of not issuing.

Interference proceedings provoked by third parties or brought by us may be necessary to determine the priority of
inventions  with  respect  to  our  patents  or  patent  applications  or  those  of  our  licensors.  An  unfavorable  outcome  could
require us to cease using the related technology or to attempt to license rights to it from the prevailing party. Our business
could  be  harmed  if  the  prevailing  party  does  not  offer  us  a  license  on  commercially  reasonable  terms.  Our  defense  of
litigation  or  interference  proceedings  may  fail  and,  even  if  successful,  may  result  in  substantial  costs  and  distract  our
management  and  other  employees.  We  may  not  be  able  to  prevent,  alone  or  with  our  licensors,  misappropriation  of  our
intellectual property rights, particularly in countries where the laws may not protect those rights as fully as in the United
States.

Furthermore,  because  of  the  substantial  amount  of  discovery  required  in  connection  with  intellectual  property
litigation, there is a risk that some of our confidential information could be compromised by disclosure during this type of
litigation.  There  could  also  be  public  announcements  of  the  results  of  hearings,  motions  or  other  interim  proceedings  or
developments.  If  securities  analysts  or  investors  perceive  these  results  to  be  negative,  it  could  have  a  material  adverse
effect on the price of our common stock.

We may infringe the intellectual property rights of others, which may prevent or delay our product development efforts
and stop us from commercializing or increase the costs of commercializing IMCIVREE.

Our  success  will  depend  in  part  on  our  ability  to  operate  without  infringing  the  intellectual  property  and
proprietary rights of third parties. We cannot assure you that our business, products and methods do not or will not infringe
the  patents  or  other  intellectual  property  rights  of  third  parties.  For  example,  numerous  third  party  U.S.  and  non  U.S.
patents and pending applications exist that cover melanocortin receptor analogs and methods of using these analogs.

The  pharmaceutical  industry  is  characterized  by  extensive  litigation  regarding  patents  and  other  intellectual
property rights. Other parties may allege that setmelanotide or the use of our technologies infringes patent claims or other
intellectual property rights held by them or that we are employing their proprietary technology without authorization.

Patent and other types of intellectual property litigation can involve complex factual and legal questions, and their
outcome is uncertain. Any claim relating to intellectual property infringement that is successfully asserted against us may
require  us  to  pay  substantial  damages,  including  treble  damages  and  attorney’s  fees  if  we  are  found  to  be  willfully
infringing  another  party’s  patents,  for  past  use  of  the  asserted  intellectual  property  and  royalties  and  other  consideration
going forward if we are forced or choose to take a license. In addition, if any such claim were successfully asserted against
us  and  we  could  not  obtain  such  a  license,  we  may  be  forced  to  stop  or  delay  developing,  manufacturing,  selling  or
otherwise commercializing IMCIVREE.

If we are unable to avoid infringing the patent rights of others, we may be required to seek a license, defend an
infringement action or challenge the validity of the patents in court, or redesign our products. Patent litigation is costly and
time consuming. We may not have sufficient resources to bring these actions to a successful conclusion.

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In  addition,  in  order  to  avoid  infringing  the  intellectual  property  rights  of  third  parties  and  any  resulting
intellectual property litigation or claims, we could be forced to do one or more of the following, which may not be possible
and, even if possible, could be costly and time consuming:

● cease development and commercialization of setmelanotide;

● pay substantial damages for past use of the asserted intellectual property;

● obtain a license from the holder of the asserted intellectual property, which license may not be available on

reasonable terms, if at all; and

● in the case of trademark claims, rename setmelanotide and/or its trade name IMCIVREE.

Any of these risks coming to fruition could have a material adverse effect on our business, results of operations,

financial condition and prospects.

We may be subject to claims challenging the inventorship or ownership of our patents and other intellectual property.

We may also be subject to claims that former employees, collaborators or other third parties have an ownership
interest in our patents or other intellectual property. Litigation may be necessary to defend against these and other claims
challenging inventorship or ownership. If we fail in defending any such claims, in addition to paying monetary damages,
we may lose valuable intellectual property rights, such as exclusive ownership of, or right to use, such intellectual property.
Such an outcome could have a material adverse effect on our business. Even if we are successful in defending against such
claims, litigation could result in substantial costs and be a distraction to management and other employees.

Issued patents covering setmelanotide could be found invalid or unenforceable if challenged in court.

If we or one of our licensing partners threatened or initiated legal proceedings against a third party to enforce a
patent  covering  setmelanotide,  the  defendant  could  claim  that  the  patent  covering  setmelanotide  is  invalid  and/or
unenforceable. In patent litigation in the United States, defendant counterclaims alleging invalidity and/or unenforceability
are  commonplace.  Grounds  for  a  validity  challenge  include  alleged  failures  to  meet  any  one  of  several  statutory
requirements,  including  novelty,  non-obviousness  and  enablement.  Grounds  for  unenforceability  assertions  include
allegations  that  someone  connected  with  prosecution  of  the  patent  withheld  material  information  from  the  U.S.  PTO,  or
made a misleading statement, during patent prosecution. Third parties may also raise similar claims before administrative
bodies in the United States or abroad, even outside the context of litigation. Such mechanisms include re-examination, inter
partes review, post grant review and equivalent proceedings in foreign jurisdictions, for example, opposition proceedings.
Such  proceedings  could  result  in  revocation  or  amendment  of  our  patents  in  such  a  way  that  they  no  longer  cover
setmelanotide  or  competitive  products.  The  outcome  following  legal  assertions  of  invalidity  and/or  unenforceability  is
unpredictable. With respect to validity, for example, we cannot be certain that there is no invalidating prior art, of which we
and the patent examiner were unaware during prosecution. If a defendant were to prevail on a legal assertion of invalidity
and/or unenforceability, we would lose at least part, and perhaps all, of the patent protection on setmelanotide. Such a loss
of patent protection would have a material adverse impact on our business.

We do not seek to protect our intellectual property rights in all jurisdictions throughout the world and we may not be
able to adequately enforce our intellectual property rights even in the jurisdictions where we seek protection.

Filing, prosecuting and defending patents on setmelanotide in all countries and jurisdictions throughout the world
would be prohibitively expensive, and our intellectual property rights in some countries outside the United States could be
less extensive than those in the United States. In addition, the laws of some foreign countries do not protect intellectual
property  rights  to  the  same  extent  as  federal  and  state  laws  in  the  United  States.  Consequently,  we  may  not  be  able  to
prevent third parties from practicing our inventions in all countries outside the United States, or from selling or importing
products  made  using  our  inventions  in  and  into  the  United  States  or  other  jurisdictions.  Competitors  may  use  our
technologies in jurisdictions where we have not obtained patent protection to develop their own products and further, may
export otherwise infringing products to territories where we have patent protection, but enforcement is not as strong as

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that in the United States. These products may compete with our product and our patents or other intellectual property rights
may not be effective or sufficient to prevent them from competing.

Many companies have encountered significant problems in protecting and defending intellectual property rights in
foreign  jurisdictions.  The  legal  systems  of  certain  countries,  particularly  certain  developing  countries,  do  not  favor  the
enforcement of patents and other intellectual property protection, particularly those relating to biopharmaceuticals, which
could make it difficult for us to stop the infringement of our patents or marketing of competing products in violation of our
proprietary rights generally. For example, an April 2017 report from the Office of the United States Trade Representative
identified  a  number  of  countries,  including  India  and  China,  where  challenges  to  the  procurement  and  enforcement  of
patent rights have been reported. Several countries, including India and China, have been listed in the report every year
since 1989. Proceedings to enforce our patent rights in foreign jurisdictions could result in substantial costs and divert our
efforts  and  attention  from  other  aspects  of  our  business,  could  put  our  patents  at  risk  of  being  invalidated  or  interpreted
narrowly, could put our patent applications at risk of not issuing and could provoke third parties to assert claims against us.
We  may  not  prevail  in  any  lawsuits  that  we  initiate  and  the  damages  or  other  remedies  awarded,  if  any,  may  not  be
commercially  meaningful.  Accordingly,  our  efforts  to  enforce  our  intellectual  property  rights  around  the  world  may  be
inadequate to obtain a significant commercial advantage from the intellectual property that we develop or license.

We are dependent on licensed intellectual property. If we were to lose our rights to licensed intellectual property, we may
not be able to continue developing or commercializing setmelanotide.

We have licensed our rights to setmelanotide from Ipsen Pharma SAS, or Ipsen. Our license with Ipsen imposes
various obligations on us, and provides Ipsen the right to terminate the license in the event of our material breach of the
license agreement, our failure to initiate or complete development of a licensed product, or our commencement of an action
seeking to have an Ipsen licensed patent right declared invalid. Termination of our license from Ipsen would result in our
loss of the right to use the licensed intellectual property, which would materially adversely affect our ability to develop and
commercialize setmelanotide, as well as harm our competitive business position and our business prospects.

We also have licensed from Camurus its drug delivery technology, FluidCrystal, to formulate setmelanotide. Our
license with Camurus imposes various obligations on us, and provides Camurus the right to terminate the license in the
event  of  our  material  breach  of  the  license  agreement.  Termination  of  our  license  from  Camurus  would  result  in  our
inability to use the licensed intellectual property.

We  may  enter  into  additional  licenses  to  third  party  intellectual  property  that  are  necessary  or  useful  to  our
business.  Future  licensors  may  also  allege  that  we  have  breached  our  license  agreement  and  may  accordingly  seek  to
terminate  our  license  with  them.  In  addition,  future  licensors  may  have  the  right  to  terminate  our  license  at  will.  Any
termination could result in our loss of the right to use the licensed intellectual property, which could materially adversely
affect our ability to develop and commercialize setmelanotide, as well as harm our competitive business position and our
business prospects.

While we have registered trademarks for the commercial trade name IMCIVREE (setmelanotide) in the United States
and the EU, we have not yet obtained trademark protection for IMCIVREE in certain foreign jurisdictions and failure
to secure such registrations could adversely affect our business.

While we have received registered trademarks for the commercial trade name IMCIVREE (setmelanotide) and its
logo  in  the  United  States  and  the  EU,  we  have  not  yet  obtained  trademark  protection  for  IMCIVREE  in  certain  foreign
jurisdictions  and  are  pursuing  trademark  registrations  in  other  jurisdictions.  Our  trademark  applications  may  be  rejected
during trademark registration proceedings. Although we would be given an opportunity to respond to those rejections, we
may be unable to overcome them. In addition, in the U.S. PTO and in comparable agencies in many foreign jurisdictions,
third  parties  are  given  an  opportunity  to  oppose  pending  trademark  applications  and  to  seek  to  cancel  registered
trademarks.  Opposition  or  cancellation  proceedings  may  be  filed  against  our  trademarks,  and  our  trademarks  may  not
survive those proceedings.

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If  we  do  not  obtain  additional  protection  under  the  Hatch-Waxman  Amendments  and  similar  foreign  legislation  by
extending the patent terms and obtaining product exclusivity for setmelanotide, our business may be materially harmed.

Depending upon the timing, duration and specifics of FDA marketing approval for setmelanotide, one or more of
the U.S. patents we license may be eligible for limited patent term restoration under the Drug Price Competition and Patent
Term Restoration Act of 1984, referred to as the Hatch Waxman Amendments. The Hatch Waxman Amendments permit a
patent term restoration of up to five years as compensation for patent term lost during product development and the FDA
regulatory  review  process,  and  we  have  applied  to  the  U.S.  PTO  for  patent  term  extension.  However,  we  may  not  be
granted  an  extension  because  of,  for  example,  failure  to  apply  within  applicable  deadlines,  failure  to  apply  prior  to
expiration of relevant patents or otherwise failure to satisfy applicable requirements. Moreover, the applicable time period
or the scope of patent protection afforded could be less than we request. If we are unable to obtain patent term extension or
restoration or the term of any such extension is less than we request, our competitors may obtain approval of competing
products following our patent expiration, and our ability to generate revenues could be materially adversely affected.

Because setmelanotide contains active ingredients that the FDA has determined to be a new chemical entity, it has
been afforded five years of marketing exclusivity by the FDA. Following the expiration of this marketing exclusivity, the
FDA may approve generic products. Manufacturers may seek to launch these generic products following the expiration of
the  applicable  marketing  exclusivity  period,  even  if  we  still  have  patent  protection  for  setmelanotide.  Recent  legislation
enacted  by  Congress  created,  among  other  things,  new  causes  of  action  against  innovator  companies  that  refuse  to  offer
samples of drugs for purposes of testing and developing generic or biosimilar products or to allow companies to participate
in  a  shared  Risk  Evaluation  and  Mitigation  Strategy  (REMS).  Competition  that  setmelanotide  may  face  from  generic
versions could materially and adversely impact our future revenue, profitability and cash flows and substantially limit our
ability to obtain a return on the investments we have made in setmelanotide.

In the EU, the grant of orphan designation for setmelanotide means that this medicinal product would be entitled,
upon grant of marketing authorization by the European Commission, to ten years of exclusivity in all EU member states.
Marketing authorization may, however, be granted to a similar medicinal product with the same orphan indication during
the ten year period if we are unable to supply sufficient quantities of setmelanotide. Marketing authorization may also be
granted  to  a  similar  medicinal  product  with  the  same  orphan  indication  if  the  similar  product  is  deemed  safer,  more
effective or otherwise clinically superior to setmelanotide. The period of market exclusivity may, in addition, be reduced to
six  years  if  it  can  be  demonstrated  on  the  basis  of  available  evidence  that  setmelanotide  is  sufficiently  profitable  not  to
justify maintenance of market exclusivity.

If  we  fail  to  obtain  an  extension  of  patent  protection  under  similar  foreign  legislation,  where  applicable,  our
competitors  may  obtain  approval  of  competing  products  following  our  patent  expiration,  and  our  ability  to  generate
revenues could be materially adversely affected in the foreign countries concerned.

Changes in U.S. patent law could diminish the value of patents in general, thereby impairing our ability to protect our
product.

The  United  States  has  enacted  and  is  currently  implementing  the  America  Invents  Act  of  2011,  wide  ranging
patent  reform  legislation.  Further,  the  U.S.  Supreme  Court  has  ruled  on  several  patent  cases  in  recent  years,  either
narrowing  the  scope  of  patent  protection  available  in  certain  circumstances  or  weakening  the  rights  of  patent  owners  in
certain situations. In addition to increasing uncertainty with regard to our ability to obtain future patents, this combination
of events has created uncertainty with respect to the value of patents, once obtained. Depending on decisions by the U.S.
Congress, the federal courts and the U.S. PTO, the laws and regulations governing patents could change in unpredictable
ways that would weaken our ability to obtain new patents or to enforce our existing patents or future patents.

We may be subject to damages resulting from claims that we or our employees have wrongfully used or disclosed alleged
trade secrets of their former employers.

Our  employees  have  been  previously  employed  at  other  biotechnology  or  pharmaceutical  companies,  including
our competitors or potential competitors. We may be subject to claims that these employees or we have inadvertently or
otherwise used or disclosed trade secrets or other proprietary information of the former employers of our employees.

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Litigation may be necessary to defend against these claims. Even if we are successful in defending against these claims,
litigation  could  result  in  substantial  costs  and  be  a  distraction  to  management.  If  we  fail  in  defending  such  claims,  in
addition to paying money damages, we may lose valuable intellectual property rights or personnel. A loss of key personnel
or  their  work  product  could  hamper  or  prevent  our  ability  to  commercialize  setmelanotide,  which  would  materially
adversely affect our commercial development efforts.

Risks Related to Regulatory Approval and Marketing of Setmelanotide and Other Legal Compliance Matters

Even  if  we  complete  the  necessary  clinical  trials,  the  regulatory  and  marketing  approval  process  is  expensive,  time
consuming  and  uncertain  and  may  prevent  us  from  obtaining  additional  approvals  for  the  commercialization  of
setmelanotide beyond FDA approval for obesity due to POMC, PCSK1or LEPR deficiencies in the United States and the
 marketing authorizations granted by the European Commission and the MHRA for the treatment of obesity and the
control of hunger associated with confirmed loss-of-function biallelic POMC, including PCSK1, deficiency or biallelic
LEPR deficiency in adults and children 6 years of age and above in the EU and Great Britain, respectively. We depend
primarily on the success of setmelanotide, and we cannot be certain that we will be able to obtain additional regulatory
approvals  for,  or  successfully  commercialize,  setmelanotide.  If  we  are  not  able  to  obtain,  or  if  there  are  delays  in
obtaining,  required  additional  regulatory  approvals,  we  will  not  be  able  to  commercialize  setmelanotide  in  additional
indications  in  the  United  States  or  in  foreign  jurisdictions,  and  our  ability  to  generate  revenue  will  be  materially
impaired.

We currently have only one product candidate, setmelanotide, in clinical development, and our business depends
entirely on its successful clinical development, regulatory approval and commercialization. Setmelanotide (IMCIVREE),
which is currently approved by FDA for chronic weight management in patients with obesity due to POMC, PCSK1 or
LEPR deficiencies and by the European Commission and MHRA for the treatment of obesity and the control of hunger
associated with confirmed loss-of-function biallelic POMC, including PCSK1, deficiency or biallelic LEPR deficiency in
adults  and  children  6  years  of  age  and  above,  will  require  substantial  additional  clinical  development,  testing  and
regulatory  approval  before  we  are  permitted  to  commence  commercialization  in  indications  beyond  those  currently
approved for IMCIVREE in the United States, the EU and Great Britain. The clinical trials, manufacturing and marketing
of setmelanotide are subject to extensive and rigorous review and regulation by numerous government authorities in the
United States and in other countries where we intend to test and, if approved, market setmelanotide.

Before  obtaining  regulatory  approvals  for  the  commercial  sale  of  any  product  candidate,  we  must  demonstrate
through  nonclinical  testing  and  clinical  trials  that  the  product  candidate  is  safe  and  effective  for  use  in  each  target
indication.  This  process  can  take  many  years  and  approval,  if  any,  may  be  conditional  on  postmarketing  studies  and
surveillance,  and  will  require  the  expenditure  of  substantial  resources  beyond  our  existing  cash  resources.  Of  the  large
number  of  drugs  in  development  in  the  United  States  and  in  other  countries,  only  a  small  percentage  will  successfully
complete  the  FDA  regulatory  approval  process  or  the  equivalent  process  in  foreign  jurisdictions  and  will  be
commercialized.  In  addition,  we  have  not  discussed  all  of  our  proposed  development  programs  with  the  FDA  or  the
competent authorities of foreign jurisdictions. Accordingly, even if we are able to obtain the requisite financing to continue
to  fund  our  development  and  clinical  trials,  we  cannot  assure  you  that  setmelanotide  will  be  successfully  developed  or
commercialized.

In addition, obtaining FDA approval of an NDA for additional indications and the approval of an MAA from the
European  Commission  for  additional  indications  is  a  complex,  lengthy,  expensive  and  uncertain  process,  and  the  FDA,
EMA or equivalent competent authorities in foreign jurisdictions may delay, limit or deny approval of setmelanotide for
many reasons, including, among others:

● the FDA, the EMA, or other equivalent competent authorities in foreign jurisdictions may disagree with our
interpretation  of  data  from  clinical  trials,  or  may  change  the  requirements  for  approval  even  after  it  has
reviewed and commented on the design for our clinical trials;

● we may not be able to demonstrate to the satisfaction of the FDA, the EMA, or other equivalent competent
authorities  in  foreign  jurisdictions  that  setmelanotide  is  safe  and  effective  in  treating  obesity  caused  by
certain genetic deficiencies affecting the MC4R pathway;

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● the results of our clinical trials may not be interpretable or meet the level of statistical or clinical significance
required  by  the  FDA,  the  EMA,  or  other  equivalent  competent  authorities  in  foreign  jurisdictions  for
marketing approval. For example, the potential unblinding of setmelanotide studies due to easily identifiable
AEs may raise the concern that potential bias has affected the clinical trial results;

● the FDA, the EMA, or other equivalent competent authorities in foreign jurisdictions may disagree with the

number, size, conduct or implementation of our clinical trials;

● the  FDA,  the  EMA,  or  other  equivalent  competent  authorities  in  foreign  jurisdictions  may  require  that  we

conduct additional clinical trials or pre-clinical studies;

● the FDA, the EMA, or other equivalent competent authorities in foreign jurisdictions may not consider that

our diagnostic strategy supports approval;

● the  FDA,  the  EMA,  or  other  equivalent  competent  authorities  in  foreign  jurisdictions  may  decide  that
additional  assays  or  data  to  understand  any  risks  for  anti-drug  antibodies  may  need  to  be  available  for
approval;

● the  FDA,  the  EMA,  or  other  equivalent  competent  authorities  in  foreign  jurisdictions  may  decide  that  the
toxicology  program,  including  any  parts  of  carcinogenicity  studies  that  are  filed,  do  not  meet  the
requirements for approval;

● the  FDA,  the  EMA,  or  other  equivalent  competent  authorities  in  foreign  jurisdictions  or  the  applicable
foreign  regulatory  agency  may  identify  deficiencies  in  our  chemistry,  manufacturing  or  controls  of
setmelanotide, or in the commercial production of setmelanotide to support product approval;

● the CROs that we retain to conduct our clinical trials may take actions outside of our control that materially

adversely impact our clinical trials;

● the FDA, the EMA, or other equivalent competent authorities in foreign jurisdictions may find the data from
preclinical  studies  and  clinical  trials  insufficient  to  demonstrate  that  clinical  and  other  benefits  of
setmelanotide outweigh its safety risks;

● the FDA, the EMA, or other equivalent competent authorities in foreign jurisdictions may disagree with our

interpretation of data from our preclinical studies and clinical trials;

● the FDA, the EMA, or other equivalent competent authorities in foreign jurisdictions may not approve the

formulation, labeling or specifications of setmelanotide;

● the  FDA,  the  EMA,  or  other  equivalent  competent  authorities  in  foreign  jurisdictions  may  not  accept  data

generated at our clinical trial sites;

● the  FDA,  the  EMA,  or  the  equivalent  competent  authorities  in  foreign  jurisdictions  may  require,  as  a
condition  of  approval,  additional  preclinical  studies  or  clinical  trials,  limitations  on  approved  labeling  or
distribution and use restrictions;

● as  part  of  our  NDA  approval,  we  were  required  to  complete  certain  post-market  requirements  and

commitments, which we may not be able to meet;

● the  FDA  may  require  development  of  a  REMS  as  a  condition  of  additional  approvals  or  may  impose

additional requirements that limit the promotion, advertising, distribution, or sales of setmelanotide;

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● the  European  Commission  may  grant  only  conditional  approval  marketing  authorization  or  based  on  the
EMA’s opinion impose specific obligations as a condition for marketing authorization, or may require us to
conduct post authorization safety studies as a condition of grant of marketing authorization;

● the FDA or other equivalent competent foreign regulatory agencies may deem our manufacturing processes
or our facilities or the facilities of our CMOs inadequate to preserve the identity, strength, quality, purity, or
potency of our product; or

● the FDA or the equivalent competent authorities in foreign jurisdictions may change its approval policies or

adopt new regulations and guidance.

Any  of  these  factors,  many  of  which  are  beyond  our  control,  could  jeopardize  our  ability  to  obtain  additional
regulatory approvals for and successfully market IMCIVREE. Moreover, because our business is entirely dependent upon
setmelanotide, any such setback in our pursuit of regulatory approvals would have a material adverse effect on our business
and prospects.

Future regulatory legislation or regulation may increase the difficulty and cost for us to obtain marketing approval of
and commercialize our product candidates.

The  EU  pharmaceutical  legislation  is  currently  undergoing  a  complete  review  process,  in  the  context  of  the
Pharmaceutical Strategy for Europe initiative, launched by the European Commission in November 2020. A proposal for
revision  of  several  legislative  instruments  related  to  medicinal  products  (potentially  revising  the  duration  of  regulatory
exclusivity, eligibility for expedited pathways, etc.) is expected to be adopted by the European Commission by the end of
2022. The proposed revisions, once they are agreed and adopted by the European Parliament and European Council (not
expected before the end of 2024), may have a significant impact on the pharmaceutical industry in the long term.

Disruptions at the FDA and other government agencies caused by funding shortages or global health concerns could
hinder their ability to hire, retain or deploy key leadership and other personnel, or otherwise prevent new or modified
products from being developed, approved or commercialized in a timely manner or at all, which could negatively impact
our business.

The ability of the FDA and foreign regulatory authorities to review and or approve new products can be affected
by  a  variety  of  factors,  including  government  budget  and  funding  levels,  statutory,  regulatory,  and  policy  changes,  the
FDA’s and foreign regulatory authorities’ ability to hire and retain key personnel and accept the payment of user fees, and
other events that may otherwise affect the FDA’s and foreign regulatory authorities’ ability to perform routine functions.
Average review times at the FDA and foreign regulatory authorities have fluctuated in recent years as a result. In addition,
government funding of other government agencies that fund research and development activities is subject to the political
process,  which  is  inherently  fluid  and  unpredictable.  Disruptions  at  the  FDA  and  other  agencies,  such  as  the  EMA,
following  its  relocation  to  Amsterdam  and  resulting  staff  changes,  may  also  slow  the  time  necessary  for  new  drugs  and
biologics to be reviewed and/or approved by necessary government agencies, which would adversely affect our business. 
For  example,  over  the  last  several  years,  ,  the  U.S.  government  has  shut  down  several  times  and  certain  regulatory
agencies, such as the FDA, have had to furlough critical FDA employees and stop critical activities.

Separately, in response to the COVID-19 pandemic, in March 2020, the FDA announced its intention to postpone
most  inspections  of  foreign  manufacturing  facilities,  and  on  March  18,  2020,  the  FDA  temporarily  postponed  routine
surveillance inspections of domestic manufacturing facilities. Subsequently, in July 2020, the FDA resumed certain on-site
inspections of domestic manufacturing facilities subject to a risk-based prioritization system. The FDA utilized this risk-
based assessment system to assist in determining when and where it was safest to conduct prioritized domestic inspections.
Additionally, on April 15, 2021, the FDA issued a guidance document in which the FDA described its plans to conduct
voluntary  remote  interactive  evaluations  of  certain  drug  manufacturing  facilities  and  clinical  research  sites,  among  other
facilities. According to the guidance, the FDA may request such remote interactive evaluations where the FDA determines
that remote evaluation would be appropriate based on mission needs and travel limitations. In May 2021, the FDA outlined
a  detailed  plan  to  move  toward  a  more  consistent  state  of  inspectional  operations,  and  in  July  2021,  the  FDA  resumed
standard inspectional operations of domestic facilities and was continuing to maintain this level of operation

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as  of  September  2021.  More  recently,  the  FDA  has  continued  to  monitor  and  implement  changes  to  its  inspectional
activities to ensure the safety of its employees and those of the firms it regulates as it adapts to the evolving COVID-19
pandemic. Regulatory authorities outside the United States have adopted similar restrictions or other policy measures in
response to the COVID-19 pandemic. If a prolonged government shutdown occurs, or if global health concerns continue to
prevent  the  FDA  or  other  regulatory  authorities  from  conducting  their  regular  inspections,  reviews,  or  other  regulatory
activities, it could significantly impact the ability of the FDA or other regulatory authorities to timely review and process
our regulatory submissions, which could have a material adverse effect on our business.

Our  failure  to  obtain  marketing  approval  in  foreign  jurisdictions  would  prevent  setmelanotide  from  being  marketed
abroad,  and  any  current  or  future  approvals  we  have  been  or  may  be  granted  for  setmelanotide  in  the  United  States
would not assure approval of setmelanotide in foreign jurisdictions.

In  order  to  market  and  sell  setmelanotide  and  any  other  product  candidate  that  we  may  develop  in  the  EU  and
many  other  jurisdictions,  we  or  our  third  party  collaborators  must  obtain  separate  marketing  authorizations  and  comply
with  numerous  and  varying  regulatory  requirements.  The  marketing  authorization  procedure  varies  among  countries  and
can  involve  additional  testing.  The  time  required  to  obtain  marketing  authorization  may  differ  substantially  from  that
required to obtain FDA approval. The marketing authorization process outside the United States generally includes all of
the risks associated with obtaining FDA approval. In addition, in many countries outside the United States, it is required
that the product be approved for reimbursement before the product can be sold in that country. We or these third parties
may not obtain marketing authorization from competent authorities outside the United States on a timely basis, if at all.
Approval  by  the  FDA  does  not  ensure  grant  of  marketing  authorization  by  competent  authorities  in  other  countries  or
jurisdictions, and grant of marketing authorization by one competent authority outside the United States does not ensure
grant of marketing authorization by competent authorities in other countries or jurisdictions or by the FDA. We may not be
able  to  file  for  marketing  authorizations  and  may  not  receive  necessary  marketing  authorization  to  commercialize
setmelanotide in any market. Additionally, the United Kingdom’s withdrawal from the EU, commonly referred to as Brexit,
has resulted in the relocation of the EMA from the United Kingdom to the Netherlands. This relocation has caused, and
may  continue  to  cause,  disruption  in  the  administrative  and  medical  scientific  links  between  the  EMA  and  the  MHRA,
including delays in granting clinical trial authorization or marketing authorization, disruption of importation and export of
active  substance  and  other  components  of  new  drug  formulations,  and  disruption  of  the  supply  chain  for  clinical  trial
product and final authorized formulations. The cumulative effects of the disruption to the regulatory framework may add
considerably to the development lead time to marketing authorization and commercialization of setmelanotide, or any other
product  candidates  in  the  EU  and/or  the  United  Kingdom.  Although  we  have  obtained  FDA  approval  and  marketing
authorization from the European Commission and the MHRA for setmelanotide, any delay in obtaining, or an inability to
obtain,  any  marketing  authorization,  for  any  of  our  other  product  candidates,  as  a  result  of  Brexit  or  otherwise,  would
prevent us from commercializing our product candidates in the United Kingdom and/or the EU and restrict our ability to
generate revenue and achieve and sustain profitability. If any of these outcomes occur, we may be forced to restrict or delay
efforts to seek marketing authorization in the United Kingdom and/or EU for any of our other product candidates, which
could significantly and materially harm our business.

The terms of our current and future potential marketing approvals for setmelanotide and ongoing regulation may limit
how  we  manufacture  and  market  setmelanotide,  and  compliance  with  such  requirements  may  involve  substantial
resources, which could materially impair our ability to generate revenue.

Regulatory  authorities  may  impose  significant  restrictions  on  setmelanotide’s  indicated  uses  or  marketing  or
impose  ongoing  requirements  for  potentially  costly  post  approval  studies.  We  and  setmelanotide  will  also  be  subject  to
ongoing requirements by the FDA and foreign regulatory authorities, governing labeling, packaging, storage, advertising,
promotion,  marketing,  distribution,  importation,  exportation,  post-approval  changes,  manufacturing,  recordkeeping,  and
submission  of  safety  and  other  post  market  information.  Advertising  and  promotional  materials  must  comply  with  the
FDCA  and  implementing  regulations  and  foreign  regulations,  and  are  subject  to  FDA  and  foreign  regulatory  authorities
oversight and post-marketing reporting obligations, in addition to other potentially applicable federal and state laws.  The
FDA  and  the  other  competent  foreign  authorities  have  significant  post  market  authority,  including,  for  example,  the
authority to require labeling changes based on new safety information and to require post market studies or clinical trials to
evaluate serious safety risks related to the use of a drug. The FDA and foreign regulatory authorities also has the authority
to require, as part of an NDA or similar foreign application or post approval, the submission of a REMS or other

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specific obligations, which may include Elements to Assure Safe Use. Any REMS or other specific obligations required by
the  FDA  or  foreign  regulatory  authorities  may  lead  to  increased  costs  to  assure  compliance  with  new  post  approval
regulatory requirements and potential requirements or restrictions on the sale of approved products, all of which could lead
to lower sales volume and revenue.  The holder of an approved NDA also must submit new or supplemental applications
and  obtain  FDA  approval  for  certain  changes  to  the  approved  product,  product  labeling  or  manufacturing  process,  or
adding new manufacturers. Similar requirements apply in foreign jurisdictions.

Manufacturers of drug products and their facilities may be subject to payment of application and program fees and
are  subject  to  continual  review  and  periodic  inspections  by  the  FDA  and  other  equivalent  competent  authorities  for
compliance with cGMPs and other regulations. If we or a regulatory agency discover problems with setmelanotide, such as
AEs of unanticipated severity or frequency, or problems with the facility where setmelanotide is manufactured or disagrees
with the promotion, marketing or labeling of the product, a regulatory agency may impose restrictions on setmelanotide,
the manufacturer or us, including requiring withdrawal of setmelanotide from the market or suspension of manufacturing.
If we or the manufacturing facilities for setmelanotide fail to comply with applicable regulatory requirements, a regulatory
agency may, among other things:

● issue warning letters or untitled letters;

● seek an injunction or impose civil or criminal penalties or monetary fines;

● vary, suspend or withdraw marketing approval;

● suspend any ongoing clinical trials;

● refuse to approve pending applications or supplements to applications submitted by us;

● suspend or impose restrictions on operations, including costly new manufacturing requirements; or

● seize  or  detain  setmelanotide,  refuse  to  permit  the  import  or  export  of  setmelanotide,  or  request  that  we

initiate a product recall.

Any  government  investigation  of  alleged  violations  of  law  could  require  us  to  expend  significant  time  and
resources in response and could generate negative publicity. The occurrence of any event or penalty described above may
inhibit our ability to commercialize our product candidates and adversely affect our business, financial condition, results of
operations and prospects.

Accordingly,  we  and  our  CMOs  will  continue  to  expend  time,  money  and  effort  in  all  areas  of  regulatory
compliance, including manufacturing, production, product surveillance and quality control. If we are not able to comply
with  post-approval  regulatory  requirements,  we  could  have  the  marketing  approvals  for  setmelanotide  withdrawn  by
regulatory  authorities  and  our  ability  to  market  any  future  products  could  be  limited,  which  could  adversely  affect  our
ability to achieve or sustain profitability. Thus, the cost of compliance with post-approval regulations may have a negative
effect on our operating results and financial condition.

In  addition,  a  sponsor’s  responsibilities  and  obligations  under  the  FDCA  and  FDA  regulations,  and  those  of
equivalent  foreign  regulatory  agencies,  may  change  and  additional  government  regulations  may  be  enacted  that  could
prevent, limit or delay regulatory approval of our product candidates. We cannot predict the likelihood, nature or extent of
government regulation that may arise from future legislation or administrative action, either in the United States or abroad.
If we are slow or unable to adapt to changes in existing requirements or the adoption of new requirements or policies, or if
we are not able to maintain regulatory compliance, we may be subject to enforcement action and we may not achieve or
sustain profitability.

Similar  to  the  United  States,  both  marketing  authorization  holders  and  manufacturers  of  medicinal  products  are

subject to comprehensive regulatory oversight by the EMA and the competent authorities of the individual EU member

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states, both before and after grant of the manufacturing and marketing authorizations. This oversight includes control of
compliance  with  GMP  rules,  which  govern  quality  control  of  the  manufacturing  process  and  require  documentation
policies  and  procedures.  We  and  our  third  party  manufacturers  would  be  required  to  ensure  that  all  of  our  processes,
methods, and equipment are compliant with GMP. Failure by us or by any of our third party partners, including suppliers,
manufacturers,  and  distributors  to  comply  with  EU  laws  and  the  related  national  laws  of  individual  EU  member  states
governing  the  conduct  of  clinical  trials,  manufacturing  approval,  marketing  authorization  of  medicinal  products,  both
before  and  after  grant  of  marketing  authorization,  and  marketing  of  such  products  following  grant  of  authorization  may
result  in  administrative,  civil,  or  criminal  penalties.  These  penalties  could  include  delays  in  or  refusal  to  authorize  the
conduct of clinical trials or to grant marketing authorization, product withdrawals and recalls, product seizures, suspension,
revocation  or  variation  of  the  marketing  authorization,  total  or  partial  suspension  of  production,  distribution,
manufacturing, or clinical trials, operating restrictions, injunctions, suspension of licenses, fines, and criminal penalties.

In  addition,  EU  legislation  related  to  pharmacovigilance,  or  the  assessment  and  monitoring  of  the  safety  of
medicinal products, provides that the EMA and the competent authorities of the EU member states have the authority to
require companies to conduct additional post-approval clinical efficacy and safety studies. The legislation also governs the
obligations of marketing authorization holders with respect to additional monitoring, AE management and reporting. Under
the  pharmacovigilance  legislation  and  its  related  regulations  and  guidelines,  we  may  be  required  to  conduct  a  labor
intensive collection of data regarding the risks and benefits of marketed products and may be required to engage in ongoing
assessments  of  those  risks  and  benefits,  including  the  possible  requirement  to  conduct  additional  clinical  studies,  which
may be time consuming and expensive and could impact our profitability. Noncompliance with such obligations can lead to
the  variation,  suspension  or  withdrawal  of  marketing  authorization  or  imposition  of  financial  penalties  or  other
enforcement measures.

Current  and  future  healthcare  reform  legislation  or  regulation  may  increase  the  difficulty  and  cost  for  us  and  any
future  collaborators  to  commercialize  setmelanotide  and  may  adversely  affect  the  prices  we,  or  they,  may  obtain  and
may have a negative impact on our business and results of operations.

In the United States and some foreign jurisdictions there have been, and continue to be, a number of legislative
and regulatory changes and proposed changes regarding the healthcare system that could, among other things, restrict or
regulate post-approval activities with respect to IMCIVREE and affect our ability, or the ability of any future collaborators,
to profitably sell our products. Among policy makers and payors in the United States and elsewhere, there is significant
interest in promoting changes in healthcare systems with the stated goals of containing healthcare costs, improving quality
and/or  expanding  access.  In  the  United  States  and  elsewhere,  the  pharmaceutical  industry  has  been  a  particular  focus  of
these  efforts  and  has  been  significantly  affected  by  major  legislative  initiatives.  We  expect  that  current  laws,  as  well  as
other healthcare reform measures that may be adopted in the future, may result in more rigorous coverage criteria and in
additional downward pressure on the price that we, or any future collaborators, may receive for IMCIVREE or any product
candidates approved for sale.

In  March  2010,  Patient  Protection  and  Affordable  Care  Act,  as  amended  by  the  Health  Care  and  Education
Reconciliation  Act  of  2010,  or  collectively  the  ACA,  was  signed  into  law.  The  ACA  substantially  changed  the  way
healthcare  is  financed  by  both  governmental  and  private  insurers,  and  significantly  affects  the  U.S.  pharmaceutical
industry.  Among  the  provisions  of  the  ACA  of  importance  to  our  business,  including,  without  limitation,  our  ability  to
commercialize and the prices we may obtain for any product candidates that are approved for sale, are the following:

● an annual, nondeductible fee on any entity that manufactures or imports specified branded prescription drugs
and biologic agents, apportioned among these entities according to their market share in certain government
healthcare programs, although this fee does not apply to sales of certain products approved exclusively for
orphan indications;

● expansion  of  eligibility  criteria  for  Medicaid  programs  by,  among  other  things,  allowing  states  to  offer
Medicaid coverage to certain individuals with income at or below 133% of the federal poverty level, thereby
potentially increasing a manufacturer’s Medicaid rebate liability;

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● expansion  of  manufacturers’  rebate  liability  under  the  Medicaid  Drug  Rebate  Program  by  increasing  the
minimum  rebate  for  both  branded  and  generic  drugs,  revising  the  “average  manufacturer  price”  definition,
and extending rebate liability from fee-for-service Medicaid utilization to include the utilization of Medicaid
managed care organizations as well as Medicaid managed care;

● expansion of the list of entity types eligible for participation in the Public Health Service 340B drug pricing
program,  or  the  340B  program,  to  include  certain  free-standing  cancer  hospitals,  critical  access  hospitals,
rural  referral  centers,  and  sole  community  hospitals,  but  exempting  “orphan  drugs,”  such  as  IMCIVREE,
from the 340B ceiling price requirements for these covered entities;

● establishment  of  the  Medicare  Part  D  coverage  gap  discount  program,  which  requires  manufacturers  to
provide  a  70%  point  of  sale  discount  off  the  negotiated  price  of  applicable  brand  drugs  to  eligible
beneficiaries during their coverage gap period as a condition for the manufacturers’ outpatient drugs to be
covered under Medicare Part D;

● a  Patient  Centered  Outcomes  Research  Institute  to  oversee,  identify  priorities  in,  and  conduct  comparative

clinical effectiveness research, along with funding for such research; and

● establishment of the Center for Medicare and Medicaid Innovation within CMS to test innovative payment
and service delivery models to lower Medicare and Medicaid spending, including prescription drug spending.

Since  its  enactment,  certain  provisions  of  the  ACA  have  been  subject  to  judicial,  executive,  and  legislative
challenges. On June 17, 2021, the U.S. Supreme Court dismissed the most recent judicial challenge to the ACA brought by
several  states  without  specifically  ruling  on  the  constitutionality  of  the  ACA.  Prior  to  the  Supreme  Court’s  decision,
President Biden issued an executive order initiating a special enrollment period from February 15, 2021 through August
15,  2021  for  purposes  of  obtaining  health  insurance  coverage  through  the  ACA  marketplace.  The  executive  order  also
instructed  certain  governmental  agencies  to  review  and  reconsider  their  existing  policies  and  rules  that  limit  access  to
healthcare. It is unclear how healthcare reform measures enacted by Congress or implemented by the Biden administration
or other challenges to the ACA, if any, will impact the ACA or our business.

In addition, other legislative changes have been proposed and adopted since the ACA was enacted. For example,
beginning  April  1,  2013,  Medicare  payments  to  providers  were  reduced  by  2%  under  the  sequestration  required  by  the
Budget Control Act of 2011, which will remain in effect through 2030, with the exception of a temporary suspension due to
the COVID19 pandemic from May 1, 2020 through July 1, 2022 (with a 1% payment reduction from April 1 to June 30,
2022), unless additional Congressional action is taken. On January 2, 2013, the American Taxpayer Relief Act of 2012 was
signed into law, which, among other things, further reduced Medicare payments to several providers, including hospitals,
imaging centers and cancer treatment centers, and increased the statute of limitations period for the government to recover
overpayments  to  providers  from  three  to  five  years.  Moreover,  the  federal  government  and  the  individual  states  in  the
United States have become increasingly active in developing proposals, passing legislation and implementing regulations
designed  to  control  drug  pricing,  including  price  or  patient  reimbursement  constraints,  discounts,  formulary  flexibility,
marketing cost disclosure, drug price increase reporting, and other transparency measures. These types of initiatives may
result in additional reductions in Medicare, Medicaid, and other healthcare funding, and may otherwise affect the prices we
may obtain for IMCIVREE or the frequency with which IMCIVREE is prescribed or used.

Additional  changes  that  may  affect  our  business  include  the  expansion  of  new  programs  such  as  Medicare
payment for performance initiatives for physicians under the Medicare Access and CHIP Reauthorization Act of 2015, or
MACRA, which was fully implemented in 2019. At this time, it is unclear how the introduction of this Medicare quality
payment  program  will  impact  overall  physician  reimbursement.  The  cost  of  prescription  pharmaceuticals  in  the  United
States  has  also  been  the  subject  of  considerable  discussion  in  the  United  States.  There  have  been  several  Congressional
inquiries, as well as legislative and regulatory initiatives and executive orders designed to, among other things, bring more
transparency  to  product  pricing,  review  the  relationship  between  pricing  and  manufacturer  patient  programs,  and  reform
government program reimbursement methodologies for drug products. Members of Congress and the Biden Administration
have  indicated  they  will  continue  to  pursue  legislative  or  administrative  measures  to  control  prescription  drug  costs,
although the likelihood of such measures being adopted remains uncertain. For example, the Build Back Better

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Act, if enacted, would introduce substantial drug pricing reforms, including the establishment of a drug price negotiation
program  within  the  U.S.  Department  of  Health  and  Human  Services  that  would  require  manufacturers  to  charge  a
negotiated “maximum fair price” for certain selected drugs or pay an excise tax for noncompliance, and the establishment
of  rebate  payment  requirements  on  manufacturers  of  certain  drugs  payable  under  Medicare  Parts  B  and  D.  If  the  Build
Back Better Act is not enacted, similar or other drug pricing proposals could appear in future legislation. We cannot predict
with certainty what impact any federal or state health reforms will have on us, but such changes could impose new or more
stringent regulatory requirements on our activities or result in reduced reimbursement for our products, any of which could
adversely affect our business, results of operations and financial condition.

We expect that these and other healthcare reform measures that may be adopted in the future may result in more
rigorous coverage and payment criteria and in additional downward pressure on the price that we receive for any approved
drug. Any reduction in reimbursement from Medicare or other government programs may result in a similar reduction in
payments from private payors. The implementation of cost containment measures or other healthcare reforms may prevent
us from being able to generate revenue, attain profitability, or commercialize our drugs. We expect that additional state and
federal  healthcare  reform  measures  will  be  adopted  in  the  future,  any  of  which  could  limit  the  amounts  that  federal  and
state  governments  will  pay  for  healthcare  products  and  services,  which  could  result  in  reduced  demand  for  our  drug
candidates or additional pricing pressures.

The pricing of prescription pharmaceuticals is also subject to governmental control outside the United States. In
these countries, pricing negotiations with governmental authorities can take considerable time after the receipt of marketing
approval for a product. To obtain reimbursement or pricing approval in some countries, we may be required to conduct a
clinical  trial  that  compares  the  cost  effectiveness  of  setmelanotide  to  other  available  therapies.  If  reimbursement  of  our
products is unavailable or limited in scope or amount, or if pricing is set at unsatisfactory levels, our ability to generate
revenues  and  become  profitable  could  be  impaired.  For  more  details  concerning  the  risks  related  to  pricing  and
reimbursement  in  the  EU,  please  refer  to  the  discussion  in  the  risk  factor  “The  successful  commercialization  of
setmelanotide  and  our  other  product  candidates  will  depend  in  part  on  the  extent  to  which  governmental  authorities,
private  health  insurers,  and  other  third-party  payors  provide  coverage  and  adequate  reimbursement  levels.  Failure  to
obtain or maintain coverage and adequate reimbursement for setmelanotide or our other product candidates, if approved,
could limit our ability to market those products and decrease our ability to generate revenue” in this Annual Report.

If  we  fail  to  comply  with  our  reporting  and  payment  obligations  under  the  Medicaid  Drug  Rebate  Program  or  other
governmental pricing programs in which we participate, we could be subject to additional reimbursement requirements,
penalties, sanctions and fines, which could have a material adverse effect on our business, financial condition, results
of operations and growth prospects.

Medicaid is a joint federal and state program administered by the states for low income and disabled beneficiaries.
We participate in and have certain price reporting obligations under the Medicaid Drug Rebate Program, or the MDRP, as a
condition  of  having  covered  outpatient  drugs  payable  under  Medicaid  and,  if  applicable,  under  Medicare  Part  B.  The
MDRP requires us  to pay a rebate to state Medicaid programs for each unit of our covered outpatient drugs dispensed to
Medicaid  beneficiaries  and  paid  for  by  a  state  Medicaid  program.  These  rebates  are  based  on  pricing  data  that  we  must
report on a monthly and quarterly basis to the Centers for Medicare & Medicaid Services, or CMS, the federal agency that
administers the MDRP and other governmental healthcare programs. These data include the average manufacturer price for
each drug and, in the case of innovator products, the best price, which in general represents the lowest price available from
the  manufacturer  to  certain  entities  in  the  U.S.  in  any  pricing  structure,  calculated  to  include  all  sales  and  associated
rebates, discounts and other price concessions. If we become aware that our MDRP government price reporting submission
for  a  prior  quarter  was  incorrect  or  has  changed  as  a  result  of  recalculation  of  the  pricing  data,  we  must  resubmit  the
corrected  data  for  up  to  three  years  after  those  data  originally  were  due.  If  we  fail  to  provide  information  timely  or  are
found to have knowingly submitted false information to the government, we may be subject to civil monetary penalties and
other sanctions, including termination from the MDRP. In the event that CMS terminates our rebate agreement pursuant to
which we participate in the MDRP, no federal payments would be available under Medicaid or Medicare Part B for our
covered  outpatient  drugs.  Our  failure  to  comply  with  our  MDRP  price  reporting  and  rebate  payment  obligations  could
negatively impact our financial results.

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The  ACA  made  significant  changes  to  the  MDRP,  as  described  under  the  risk  factor  “Current  and  future
healthcare  reform  legislation  or  regulation  may  increase  the  difficulty  and  cost  for  us  and  any  future  collaborators  to
obtain marketing approval of and commercialize setmelanotide and may adversely affect the prices we, or they, may obtain
and  may  have  a  negative  impact  on  our  business  and  results  of  operations,”  above.    In  addition,  in  March  2021,  the
American Rescue Plan Act of 2021 was signed into law, which, among other things, eliminated the statutory cap on drug
manufacturers’  MDRP  rebate  liability,  effective  January  1,  2024.  Under  current  law  enacted  as  part  of  the  ACA,  drug
manufacturers’ MDRP rebate liability is capped at 100% of the average manufacturer price for a covered outpatient drug.
Congress  could  enact  additional  legislation  that  further  increases  Medicaid  drug  rebates  or  other  costs  and  charges
associated with participating in the MDRP. Additional legislation or the issuance of regulations relating to the MDRP could
have a material adverse effect on our results of operations.

Federal  law  requires  that  any  company  that  participates  in  the  MDRP  also  participate  in  the  Public  Health
Service’s 340B drug pricing program in order for federal funds to be available for the manufacturer’s drugs under Medicaid
and, if applicable, Medicare Part B. We participate in the 340B program, which is administered by the Health Resources
and  Services  Administration,  or  HRSA,  and  requires  us  to  charge  statutorily  defined  covered  entities  no  more  than  the
340B “ceiling price” for our covered outpatient drugs. These 340B covered entities include a variety of community health
clinics and other entities that receive health services grants from the Public Health Service, as well as hospitals that serve a
disproportionate  share  of  low-income  patients.  The  ACA  expanded  the  list  of  covered  entities  to  include  certain  free-
standing  cancer  hospitals,  critical  access  hospitals,  rural  referral  centers  and  sole  community  hospitals,  but  exempts
“orphan drugs,” such as IMCIVREE, from the ceiling price requirements for these covered entities. The 340B ceiling price
is  calculated  using  a  statutory  formula  based  on  the  average  manufacturer  price  and  rebate  amount  for  the  covered
outpatient  drug  as  calculated  under  the  MDRP,  and  in  general,  products  subject  to  Medicaid  price  reporting  and  rebate
liability are also subject to the 340B ceiling price calculation and discount requirement. We must report 340B ceiling prices
to HRSA on a quarterly basis, and HRSA publishes those prices to 340B covered entities. In addition, HRSA has finalized
regulations  regarding  the  calculation  of  the  340B  ceiling  price  and  the  imposition  of  civil  monetary  penalties  on
manufacturers  that  knowingly  and  intentionally  overcharge  covered  entities  for  340B-eligible  drugs.  HRSA  has  also
finalized  an  administrative  dispute  resolution  process  through  which  340B  covered  entities  may  pursue  claims  against
participating  manufacturers  for  overcharges,  and  through  which  manufacturers  may  pursue  claims  against  340B  covered
entities for engaging in unlawful diversion or duplicate discounting of 340B drugs. Our failure to comply 340B program
requirements  could  negatively  impact  our  financial  results.  Any  additional  future  changes  to  the  definition  of  average
manufacturer price and the Medicaid rebate amount under the ACA or other legislation or regulation could affect our 340B
ceiling price calculations and also negatively impact our financial results. In addition, legislation may be introduced that, if
passed, would further expand the 340B program to additional covered entities or would require participating manufacturers
to agree to provide 340B discounted pricing on drugs used in an inpatient setting.

  In  order  for  IMCIVREE  or  any  product  candidates,  if  approved,  to  be  paid  for  with  federal  funds  under  the
Medicaid and Medicare Part B programs and purchased by certain federal agencies and grantees, we also participate in the
U.S. Department of Veterans Affairs, or VA, Federal Supply Schedule, or FSS, pricing program. As part of this program,
we  are  required  to  make  our  products  available  for  procurement  on  an  FSS  contract  under  which  we  must  comply  with
standard government terms and conditions and charge a price that is no higher than the statutory Federal Ceiling Price, or
FCP, to four federal agencies (VA, U.S. Department of Defense, or DOD, Public Health Service, and U.S. Coast Guard).
The FCP is based on the Non-Federal Average Manufacturer Price, or Non-FAMP, which we must calculate and report to
the VA on a quarterly and annual basis. Pursuant to applicable law, knowing provision of false information in connection
with  a  Non-FAMP  filing  can  subject  a  manufacturer  to  significant  civil  monetary  penalties  for  each  item  of  false
information. The FSS pricing and contracting obligations also contain extensive disclosure and certification requirements.

We also participate in the Tricare Retail Pharmacy program, under which we are required to pay quarterly rebates
on  utilization  of  innovator  products  that  are  dispensed  through  the  Tricare  Retail  Pharmacy  network  to  Tricare
beneficiaries. The rebates are calculated as the difference between the annual Non-FAMP and FCP. We are required to list
our  innovator  products  on  a  Tricare  Agreement  in  order  for  them  to  be  eligible  for  DOD  formulary  inclusion.  If  we
overcharge the government in connection with our FSS contract or Tricare Agreement, whether due to a misstated FCP or
otherwise,  we  are  required  to  refund  the  difference  to  the  government.  Failure  to  make  necessary  disclosures  and/or  to
identify  contract  overcharges  could  result  in  allegations  against  us  under  the  False  Claims  Act  and  other  laws  and
regulations. Unexpected refunds to the government, and responding to a government investigation or enforcement action,

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would  be  expensive  and  time-consuming,  and  could  have  a  material  adverse  effect  on  our  business,  financial  condition,
results of operations and growth prospects.

Individual  states  continue  to  consider  and  have  enacted  legislation  to  limit  the  growth  of  healthcare  costs,
including  the  cost  of  prescription  drugs  and  combination  products.  A  number  of  states  have  either  implemented  or  are
considering  implementation  of  drug  price  transparency  legislation.  Requirements  of  pharmaceutical  manufacturers  under
such  laws  include  advance  notice  of  planned  price  increases,  reporting  price  increase  amounts  and  factors  considered  in
taking such increases, wholesale acquisition cost information disclosure to prescribers, purchasers, and state agencies, and
new  product  notice  and  reporting.  Such  legislation  could  limit  the  price  or  payment  for  certain  drugs,  and  a  number  of
states  are  authorized  to  impose  civil  monetary  penalties  or  pursue  other  enforcement  mechanisms  against  manufacturers
who fail to comply with drug price transparency requirements, including the untimely, inaccurate, or incomplete reporting
of drug pricing information.

Pricing and rebate calculations vary among products and programs. The calculations are complex and are often
subject  to  interpretation  by  us,  governmental  or  regulatory  agencies,  and  the  courts.  CMS,  the  Department  of  Health  &
Human  Services  Office  of  Inspector  General,  and  other  governmental  agencies  have  pursued  manufacturers  that  were
alleged to have failed to report these data to the government in a timely or accurate manner. Governmental agencies may
also  make  changes  in  program  interpretations,  requirements  or  conditions  of  participation,  some  of  which  may  have
implications for amounts previously estimated or paid. We cannot assure you that any submissions we are required to make
under the MDRP, the 340B program, the VA/FSS program, the Tricare Retail Pharmacy Program, and other governmental
drug pricing programs will not be found to be incomplete or incorrect.

The FDA and other regulatory agencies actively enforce the laws and regulations prohibiting the promotion of off-label
uses.

In  the  United  States,  the  FDA  strictly  regulates  marketing,  labeling,  advertising  and  promotion  of  prescription
drugs. These regulations include standards and restrictions for direct-to-consumer advertising, industry-sponsored scientific
and educational activities, promotional activities involving the internet and off-label promotion. Any regulatory approval
that  the  FDA  grants  is  limited  to  those  specific  diseases  and  indications  for  which  a  product  is  deemed  to  be  safe  and
effective by the FDA. For example, the FDA-approved label for IMCIVREE is limited to chronic weight management in
adult and pediatric patients 6 years of age and older with obesity due to POMC, PCSK1, or LEPR deficiency confirmed by
genetic  testing  demonstrating  variants  in  POMC,  PCSK1,  or  LEPR  genes  that  are  interpreted  as  pathogenic,  likely
pathogenic,  or  of  uncertain  significance.  In  addition  to  the  FDA  approval  required  for  new  formulations,  any  new
indication for an approved product also requires FDA approval. If we are not able to obtain FDA approval for any desired
future indications for our drugs and drug candidates, our ability to effectively market and sell our products may be reduced
and our business may be adversely affected.

While physicians in the United States may choose, and are generally permitted, to prescribe drugs for uses that are
not  described  in  the  product’s  labeling  and  for  uses  that  differ  from  those  tested  in  clinical  trials  and  approved  by  the
regulatory  authorities,  our  ability  to  promote  the  products  is  narrowly  limited  to  those  indications  that  are  specifically
approved  by  the  FDA.  These  “off-label”  uses  are  common  across  medical  specialties  and  may  constitute  an  appropriate
treatment for some patients in varied circumstances. For example, we are actively evaluating IMCIVREE in subjects with
other forms of obesity caused by defects in the MCR4 pathway. We are not currently permitted to, and do not, market or
promote setmelanotide for these uses.

Regulatory authorities in the United States generally do not regulate the behavior of physicians in their choice of
treatments.  Regulatory  authorities  do,  however,  restrict  communications  by  pharmaceutical  companies  on  the  subject  of
off-label use. Although recent court decisions suggest that certain off-label promotional activities may be protected under
the  First  Amendment,  the  scope  of  any  such  protection  is  unclear.  If  our  promotional  activities  fail  to  comply  with  the
FDA’s  regulations  or  guidelines,  we  may  be  subject  to  warnings  from,  or  enforcement  action  by,  these  authorities.  In
addition, our failure to follow FDA rules and guidelines relating to promotion and advertising may cause the FDA to issue
warning letters or untitled letters, bring an enforcement action against us, suspend or withdraw an approved product from
the market, require a recall or institute fines or civil fines, or could result in disgorgement of money, operating restrictions,
injunctions or criminal prosecution, any of which could harm our reputation and our business.

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In  the  EU,  the  advertising  and  promotion  of  our  products  are  subject  to  EU  laws  governing  promotion  of
medicinal products, interactions with physicians, misleading and comparative advertising and unfair commercial practices.
In  addition,  other  legislation  adopted  by  individual  EU  member  states  may  apply  to  the  advertising  and  promotion  of
medicinal products. These laws require that promotional materials and advertising in relation to medicinal products comply
with the product’s Summary of Product Characteristics, or SmPC, as approved by the competent authorities. The SmPC is
the  document  that  provides  information  to  physicians  concerning  the  safe  and  effective  use  of  the  medicinal  product.  It
forms  an  intrinsic  and  integral  part  of  the  marketing  authorization  granted  for  the  medicinal  product.  Promotion  of  a
medicinal  product  that  does  not  comply  with  the  SmPC  is  considered  to  constitute  off  label  promotion.  The  off  label
promotion of medicinal products is prohibited in the EU. The applicable laws at EU level and in the individual EU member
states  also  prohibit  the  direct  to  consumer  advertising  of  prescription  only  medicinal  products.  Violations  of  the  rules
governing  the  promotion  of  medicinal  products  in  the  EU  could  be  penalized  by  administrative  measures,  fines  and
imprisonment. These laws may further limit or restrict the advertising and promotion of our products to the general public
and may also impose limitations on our promotional activities with health care professionals.

We may be subject to federal, state and foreign healthcare laws and regulations. If we are unable to comply or have not
fully complied with such laws and regulations, we could face criminal sanctions, damages, substantial civil penalties,
reputational harm and diminished profits and future earnings.

Healthcare providers, physicians and others will play a primary role in the recommendation and prescription of
setmelanotide,  if  approved.  Our  arrangements  and  interactions  with  healthcare  professionals,  third  party  payors,  patients
and others will expose us to broadly applicable fraud and abuse, antikickback, false claims and other healthcare laws and
regulations that may constrain the business or financial arrangements and relationships through which we market, sell and
distribute  setmelanotide,  if  we  obtain  marketing  approval.  The  U.S.  federal,  state  and  foreign  healthcare  laws  and
regulations that may affect our ability to operate include, but are not limited to:

● The  United  States  federal  healthcare  Anti-Kickback  Statute,  which  prohibits,  among  other  things,  persons
and entities from knowingly and willfully soliciting, offering, paying, or receiving remuneration, (anything of
value), directly or indirectly, in cash or in kind, to induce or reward either the referral of an individual for, or
the  purchase,  lease  order  or  arranging  for  or  recommending  the  purchase,  lease  or  order  of  any  good  or
service  for  which  payment  may  be  made,  in  whole  or  in  part,  by  federal  healthcare  programs  such  as
Medicare and Medicaid. This statute has been interpreted to apply to arrangements between pharmaceutical
companies on one hand and prescribers, purchasers, formulary managers, and patients on the other. Liability
under  the  Anti-Kickback  Statute  may  be  established  without  proving  actual  knowledge  of  the  statute  or
specific intent to violate it. Although there are a number of statutory exceptions and regulatory safe harbors
to  the  federal  Anti-Kickback  Statute  protecting  certain  common  business  arrangements  and  activities  from
prosecution  or  regulatory  sanctions,  the  exceptions  and  safe  harbors  are  drawn  narrowly.  Practices  that
involve  remuneration  to  those  who  prescribe,  purchase,  or  recommend  pharmaceutical  and  biological
products,  including  certain  discounts,  or  engaging  such  individuals  or  patients  as  consultants,  advisors,  or
speakers,  may  be  subject  to  scrutiny  if  they  do  not  fit  squarely  within  an  exception  or  safe  harbor.  Our
practices may not in all cases meet all of the criteria for safe harbor protection from anti-kickback liability.
Moreover,  there  are  no  safe  harbors  for  many  common  practices,  such  as  educational  and  research  grants,
charitable donations, product and patient support programs.

● The  federal  civil  False  Claims  Act  prohibits  individuals  or  entities  from,  among  other  things,  knowingly
presenting,  or  causing  to  be  presented  a  false  or  fraudulent  claim  for  payment  of  government  funds,  or
knowingly making, using or causing to made or used a false record or statement material to an obligation to
pay money to the government or knowingly concealing or knowingly and improperly avoiding, decreasing or
concealing an obligation to pay money to the federal government. Actions under the False Claims Act may
be  brought  by  the  Attorney  General  or  as  a  qui  tam  action  by  a  private  individual  in  the  name  of  the
government. Such private individuals may share in amounts paid by the entity to the government in recovery
or  settlement.  Many  pharmaceutical  manufacturers  have  been  investigated  and  have  reached  substantial
financial settlements with the federal government under the civil False Claims Act for a variety of alleged
improper  activities  including  causing  false  claims  to  be  submitted  as  a  result  of  the  marketing  of  their
products for unapproved and thus non-reimbursable uses, inflating prices reported to private price publication

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services  which  are  used  to  set  drug  payment  rates  under  government  healthcare  programs,  and  other
interactions  with  prescribers  and  other  customers  including  those  that  may  have  affected  their  billing  or
coding  practices  and  submission  to  the  federal  government.  The  government  may  assert  that  a  claim
including items or services resulting from a violation of the federal Anti-Kickback Statute constitutes a false
or fraudulent claim for purposes of the federal civil False Claims Act. False Claims Act liability is potentially
significant  in  the  healthcare  industry  because  the  statute  provides  for  treble  damages  and  significant
mandatory  penalties  per  false  or  fraudulent  claim  or  statement  for  violations.  Because  of  the  potential  for
large  monetary  exposure,  healthcare  and  pharmaceutical  companies  often  resolve  allegations  without
admissions of liability for significant and material amounts to avoid the uncertainty of treble damages and
per  claim  penalties  that  may  be  awarded  in  litigation  proceedings.  Settlements  may  require  companies  to
enter  into  corporate  integrity  agreements  with  the  government,  which  may  impose  substantial  costs  on
companies  to  ensure  compliance.  Pharmaceutical  and  other  healthcare  companies  also  are  subject  to  other
federal  false  claims  laws,  including,  among  others,  federal  criminal  healthcare  fraud  and  false  statement
statutes that extend to non-government health benefit programs.

● The  federal  Health  Insurance  Portability  and  Accountability  Act  of  1996,  as  amended  by  the  Health
Information  Technology  for  Economic  and  Clinical  Health  Act,  or  HIPAA,  imposes  criminal  and  civil
liability  for  executing  a  scheme  to  defraud  any  healthcare  benefit  program,  including  private  third-party
payors, and also imposes obligations, with respect to safeguarding the privacy, security and transmission of
individually  identifiable  health  information.  Penalties  for  failure  to  comply  with  a  requirement  of  HIPAA
vary significantly and include civil monetary penalties as well as criminal penalties for knowingly obtaining
or  disclosing  individually  identifiable  health  information  in  violation  of  HIPAA.  The  criminal  penalties
increase  if  the  wrongful  conduct  involves  false  pretenses  or  the  intent  to  sell,  transfer  or  use  identifiable
health  information  for  commercial  advantage,  personal  gain  or  malicious  harm.  HIPAA  also  prohibits
knowingly and willfully falsifying, concealing or covering up a material fact or making any materially false,
fictitious  or  fraudulent  statement  or  representation,  or  making  or  using  any  false  writing  or  document
knowing  the  same  to  contain  any  materially  false,  fictitious  or  fraudulent  statement  or  entry  in  connection
with the delivery of or payment for healthcare benefits, items or services. Similar to the federal healthcare
Anti-Kickback Statute, a person or entity does not need to have actual knowledge of the statute or specific
intent to violate it to have committed a violation.

● The federal Physician Payments Sunshine Act, implemented as the Open Payments Program, requires certain
manufacturers  of  drugs,  devices,  biologics  and  medical  supplies  to  report  payments  and  other  transfers  of
value  to  physicians  for  which  payment  is  available  under  Medicare,  Medicaid  or  the  Children’s  Health
Insurance  Program  (with  certain  exceptions)  to  report  annually  to  the  United  States  Department  of  Health
and  Human  Services,  Centers  for  Medicare  and  Medicaid  Services,  information  related  to  physicians
(defined  to  include  doctors,  dentists,  optometrists,  podiatrists,  and  chiropractors),  certain  non-physician
practitioners (physician assistants, nurse practitioners, clinical nurse specialists, certified nurse anesthetists,
anesthesiology  assistants  and  certified  nurse-midwives)  and  teaching  hospitals,  as  well  as  ownership  and
investment  interests  held  by  physicians  and  their  immediate  family  members.  Manufacturers  must  submit
reports on or before the 90th day of each calendar year disclosing reportable payments made in the previous
calendar year.

● Analogous state laws and regulations, such as state anti-kickback and false claims laws, which may apply to
items or services reimbursed under Medicaid and other state programs or, in several states, regardless of the
payer,  including  private  insurers.  Some  state  laws  require  pharmaceutical  companies  to  report  expenses
relating  to  the  marketing  and  promotion  of  pharmaceutical  products  and  to  report  gifts  and  payments  to
individual health care providers in those states. Some of these states also prohibit certain marketing-related
activities including the provision of gifts, meals, or other items to certain health care providers. Some states
restrict the ability of manufacturers to offer co-pay support to patients for certain prescription drugs. Some
states require the posting of information relating to clinical studies and their outcomes. Other states and cities
require identification or licensing of sales representatives. In addition, several states require pharmaceutical
companies to implement compliance programs or marketing codes of conduct.

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● Analogous foreign laws and regulations, including  restrictions imposed on the promotion and marketing of
medicinal products in the EU member states and other countries, restrictions on interactions with healthcare
professionals and requirements for public disclosure of payments made to physicians. Laws (including those
governing promotion, marketing and anti-kickback provisions), industry regulations and professional codes
of conduct often are strictly enforced. Even in those countries where we may decide not to directly promote
or  market  our  products,  inappropriate  activity  by  our  international  distribution  partners  could  have
implications for us.

Ensuring  that  our  business  arrangements  and  interactions  with  healthcare  professionals,  third  party  payors,
patients and others comply with applicable healthcare laws and regulations will require substantial resources. Various state,
federal and foreign regulatory and enforcement agencies continue actively to investigate violations of health care laws and
regulations, and the United States Congress continues to strengthen the arsenal of enforcement tools.

It is possible that governmental authorities will conclude that our business practices do not comply with current or
future  statutes,  regulations  or  case  law  involving  applicable  fraud  and  abuse,  privacy,  or  other  healthcare  laws  and
regulations.  If  our  operations,  including  our  engagements  with  healthcare  professionals,  researchers  and  patients,  or  our
disease awareness and/or patient identification initiatives including genetic testing programs, or anticipated activities to be
conducted by our field teams, were found to be in violation of any of these laws or any other governmental regulations that
may  apply  to  us,  we  may  be  subject  to  costly  investigations,  significant  civil,  criminal  and  administrative  monetary
penalties, imprisonment, damages, fines, disgorgement, exclusion from government funded healthcare programs, such as
Medicare and Medicaid, contractual damages, diminished profits and future earnings, and the curtailment or restructuring
of  our  operations,  any  of  which  could  substantially  disrupt  our  operations  or  financial  results.  Although  compliance
programs  can  mitigate  the  risk  of  investigation  and  prosecution  for  violations  of  these  laws,  the  risks  cannot  be  entirely
eliminated. Any action against us for violation of these laws or regulations, even if we successfully defend against it, could
cause us to incur significant legal expenses and generate negative publicity, which could harm our financial condition and
divert our management’s attention from the operation of our business.

Our  employees  may  engage  in  misconduct  or  other  improper  activities,  including  violating  applicable  regulatory
standards and requirements or engaging in insider trading, which could significantly harm our business.

We  are  exposed  to  the  risk  of  employee  fraud  or  other  misconduct.  Misconduct  by  employees  could  include
intentional  failures  to  comply  with  the  regulations  of  the  FDA  and  applicable  non  U.S.  regulators,  provide  accurate
information to the FDA and applicable non U.S. regulators, comply with healthcare fraud and abuse laws and regulations
in the United States and abroad, report financial information or data accurately or disclose unauthorized activities to us. In
particular,  sales,  marketing  and  business  arrangements  in  the  healthcare  industry  are  subject  to  extensive  laws  and
regulations  intended  to  prevent  fraud,  misconduct,  kickbacks,  self  dealing  and  other  abusive  practices.  These  laws  and
regulations restrict or prohibit a wide range of pricing, discounting, marketing and promotion, sales commission, customer
incentive  programs  and  other  business  arrangements.  Employee  misconduct  could  also  involve  the  improper  use  of,
including trading on, information obtained in the course of clinical trials, which could result in regulatory sanctions and
serious harm to our reputation. It is not always possible to identify and deter employee misconduct, and any precautions we
take  to  detect  and  prevent  this  activity  may  be  ineffective  in  controlling  unknown  or  unmanaged  risks  or  losses  or  in
protecting us from governmental investigations or other actions or lawsuits stemming from a failure to comply with these
laws  or  regulations.  If  any  such  actions  are  instituted  against  us,  and  we  are  not  successful  in  defending  ourselves  or
asserting our rights, those actions could have a significant impact on our business, including the imposition of significant
fines  or  other  sanctions.  Some  of  these  laws  and  related  risks  are  described  under  the  risk  factor  “We may be subject to
federal and state healthcare laws and regulations. If we are unable to comply or have not fully complied with such laws
and regulations, we could face criminal sanctions, damages, substantial civil penalties, reputational harm and diminished
profits and future earnings” of this Annual Report.

Actual  or  perceived  failure  to  comply  with  data  protection,  privacy  and  security  laws,  regulations  could  lead  to
government enforcement actions and significant penalties against us, and adversely impact our operating results.

The global data protection landscape is rapidly evolving, and we are or may become subject to numerous state,

federal and foreign laws, requirements and regulations governing the collection, use, disclosure, retention, and security of

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personal  information.  Implementation  standards  and  enforcement  practices  are  likely  to  remain  uncertain  for  the
foreseeable  future,  and  we  cannot  yet  determine  the  impact  future  laws,  regulations,  standards,  or  perception  of  their
requirements may have on our business. This evolution may create uncertainty in our business, affect our ability to operate
in certain jurisdictions or to collect, store, transfer use and share personal information, necessitate the acceptance of more
onerous obligations in our contracts, result in liability or impose additional costs on us. The cost of compliance with these
laws,  regulations  and  standards  is  high  and  is  likely  to  increase  in  the  future.  Any  failure  or  perceived  failure  by  us  to
comply with federal, state or foreign laws or regulations, our internal policies and procedures or our contracts governing
our  processing  of  personal  information  could  result  in  negative  publicity,  government  investigations  and  enforcement
actions,  claims  by  third  parties  and  damage  to  our  reputation,  any  of  which  could  have  a  material  adverse  effect  on  our
financial performance, business and operating results.

In  the  United  States,  numerous  federal  and  state  laws  and  regulations,  including  HIPAA,  as  amended  by  the
Health  Information  Technology  for  Economic  and  Clinical  Health  Act  of  2009  and  regulations  implemented  thereunder,
collectively  HIPAA,  state  data  breach  notification  laws,  state  health  information  privacy  laws  and  federal  and  state
consumer  protection  laws,  including  Section  5  of  the  Federal  Trade  Commission  Act,  which  govern  the  collection,  use,
disclosure and protection of health-related and other personal information, may apply to our operations and the operations
of current and future collaborators. We may obtain health information from third parties, such as research institutions with
which  we  collaborate,  that  are  subject  to  privacy  and  security  requirements  under  HIPAA.  Although  we  are  not  directly
subject  to  HIPAA,  other  than  potentially  with  respect  to  providing  certain  employee  benefits,  we  could  be  subject  to
criminal penalties if we knowingly obtain or disclose individually identifiable health information maintained by a HIPAA
covered entity in a manner that is not authorized or permitted by HIPAA.  In addition, state laws govern the privacy and
security of health, research and genetic information in specified circumstances, many of which differ from each other in
significant ways and may not have the same effect, thus complicating compliance efforts. Further, we may also be subject
to other state laws governing the privacy, processing and protection of personal information. For example, the California
Consumer Privacy Act of 2018, or CCPA, went into effect on January 1, 2020. The CCPA creates individual privacy rights
for  California  consumers  and  increases  the  privacy  and  security  obligations  of  entities  handling  certain  personal
information. The CCPA provides for civil penalties for violations, as well as a private right of action for data breaches that
is  expected  to  increase  data  breach  litigation.  Further,  the  California  Privacy  Rights  Act,  or  CPRA,  recently  passed  in
California.  The  CPRA  will  impose  additional  data  protection  obligations  on  covered  businesses,  including  additional
consumer rights processes, limitations on data uses, new audit requirements for higher risk data, and opt outs for certain
uses of sensitive data. It will also create a new California data protection agency authorized to issue substantive regulations
and  could  result  in  increased  privacy  and  information  security  enforcement.  The  majority  of  the  provisions  will  go  into
effect on January 1, 2023, and additional compliance investment and potential business process changes may be required.
Similar  laws  have  passed  in  Virginia  and  Colorado,  and  have  been  proposed  in  other  states  and  at  the  federal  level,
reflecting a trend toward more stringent privacy legislation in the United States. The enactment of such laws could have
potentially conflicting requirements that would make compliance challenging. In addition, some of our research activities
involve  minors,  which  may  be  subject  to  additional  laws  and  can  require  specialized  consent  processes,  privacy
protections, and compliance procedures. In the event that we are subject to or affected by HIPAA, the CCPA, the CPRA or
other domestic privacy and data protection laws, any liability from failure to comply with the requirements of these laws
could adversely affect our financial condition.

Furthermore,  the  Federal  Trade  Commission,  or  FTC,  and  many  state  Attorneys  General  continue  to  enforce
federal  and  state  consumer  protection  laws  against  companies  for  online  collection,  use,  dissemination  and  security
practices that appear to be unfair or deceptive. For example, according to the FTC, failing to take appropriate steps to keep
consumers’  personal  information  secure  can  constitute  unfair  acts  or  practices  in  or  affecting  commerce  in  violation  of
Section 5(a) of the Federal Trade Commission Act. The FTC expects a company’s data security measures to be reasonable
and  appropriate  in  light  of  the  sensitivity  and  volume  of  consumer  information  it  holds,  the  size  and  complexity  of  its
business, and the cost of available tools to improve security and reduce vulnerabilities.

Our operations abroad may also be subject to increased scrutiny or attention from data protection authorities. For
example,  in  Europe,  the  collection  and  use  of  personal  data,  including  health  and  genetic  data,  is  governed  by  the
provisions of the GDPR. The GDPR became effective on May 25, 2018, and imposes strict requirements for the processing
of the personal data of individuals within the European Economic Area, or EEA, including health data from clinical trials
and AE reporting. In particular, these requirements include certain obligations concerning the consent of the individuals to

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whom the personal data relates, the information provided to the individuals, the transfer of personal data out of the EU, the
EEA  and  the  United  Kingdom,  security  breach  notifications,  and  security  and  confidentiality  of  the  personal  data,  and
violations of these requirements could result in substantial fines, up to the greater of 20 million Euros or 4% of total global
annual turnover. In addition to the foregoing, a breach of the GDPR could result in regulatory investigations, reputational
damage,  orders  to  cease/change  our  processing  of  our  data,  enforcement  notices,  and/or  assessment  notices  for  a
compulsory  audit.  We  may  also  face  civil  claims  including  representative  actions  and  other  class  action  type  litigation
(where individuals have suffered harm), potentially amounting to significant compensation or damages liabilities, as well
as associated costs, diversion of internal resources, and reputational harm. Data protection authorities from the different EU
and EEA member states may also interpret the GDPR and national laws differently and impose additional requirements,
which adds to the complexity of processing personal data in the EU and the EEA.

Additionally, from January 1, 2021, we have had to comply with the GDPR and also the United Kingdom GDPR,
or UK GDPR, which, together with the amended United Kingdom Data Protection Act 2018, retains the GDPR in United
Kingdom national law following Brexit. The UK GDPR mirrors the fines under the GDPR, e.g. fines up to the greater of
€20 million (£17.5 million) or 4% of global turnover. The relationship between the United Kingdom and the EU in relation
to certain aspects of data protection law remains unclear, and it is unclear how United Kingdom data protection laws and
regulations will develop in the medium to longer term.

Among other requirements, the GDPR and UK GDPR also regulate transfers of personal data subject to the GDPR
to  third  countries  that  have  not  been  found  to  provide  adequate  protection  to  such  personal  data,  including  the  United
States;  in  July,  2020,  the  Court  of  Justice  of  the  European  Union,  or  the  CJEU,  invalidated  the  EU-US  Privacy  Shield
Framework, or the Privacy Shield, under which personal data could be transferred from the EEA to US entities who had
self-certified  under  the  Privacy  Shield  scheme  and  imposed  further  restrictions  on  the  use  of  the  standard  contractual
clauses, or SCCs. These restrictions include a requirement for companies to carry out a transfer impact assessment which,
among  other  things,  assesses  the  laws  governing  access  to  personal  data  in  the  recipient  country  and  considers  whether
supplementary  measures  that  provide  privacy  protections  additional  to  those  provided  under  SCCs  will  need  to  be
implemented  to  ensure  an  essentially  equivalent  level  of  data  protection  to  that  afforded  in  the  EEA.  The  European
Commission issued revised SCCs on June 4, 2021 to account for the decision of the CJEU and recommendations made by
the European Data Protection Board. The revised SCCs must be used for relevant new data transfers from September 27,
2021; existing standard contractual clauses arrangements must be migrated to the revised clauses by December 27, 2022.
There  is  some  uncertainty  around  whether  the  revised  clauses  can  be  used  for  all  types  of  data  transfers,  particularly
whether they can be relied on for data transfers to non-EEA entities subject to the GDPR. The revised SCCs apply only to
the transfer of personal data outside of the EEA and not the United Kingdom; the UK’s Information Commissioner’s Office
launched a public consultation on its draft revised data transfers mechanisms in August 2021. As supervisory authorities
issue further guidance on personal data export mechanisms, including circumstances where the standard contractual clauses
cannot  be  used,  and/or  start  taking  enforcement  action,  we  could  suffer  additional  costs,  complaints  and/or  regulatory
investigations  or  fines,  and/or  if  we  are  otherwise  unable  to  transfer  personal  data  between  and  among  countries  and
regions  in  which  we  operate,  it  could  affect  the  manner  in  which  we  provide  our  services,  the  geographical  location  or
segregation  of  our  relevant  systems  and  operations,  and  could  adversely  affect  our  financial  results.  The  European
Commission has adopted an adequacy decision in favor of the United Kingdom, enabling data transfers from EU member
states to the United Kingdom without additional safeguards. However, the UK adequacy decision will automatically expire
in June 2025 unless the European Commission re-assesses and renews/extends that decision, and remains under review by
the  European  Commission  during  this  period.  The  relationship  between  the  United  Kingdom  and  the  EU  in  relation  to
certain  aspects  of  data  protection  law  remains  unclear,  and  it  is  unclear  how  United  Kingdom  data  protection  laws  and
regulations will develop in the medium to longer term, and how data transfers to and from the United Kingdom will be
regulated in the long term.

Although we work to comply with applicable laws, regulations and standards, our contractual obligations and
other legal obligations, these requirements are evolving and may be modified, interpreted and applied in an inconsistent
manner from one jurisdiction to another, and may conflict with one another or other legal obligations with which we must
comply. Our failure to comply with our obligations under the GDPR, including any failure to adopt measures to ensure that
we can continue to conduct the data processing activities that we initiated in the EU before the GDPR entered into
application could adversely impact our ability to use the data generated in our studies. And any actual or perceived

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failure to comply with these data protection laws or adequately address privacy and security concerns could lead to
government enforcement actions and significant penalties against us, and adversely impact our operating results.

Our future growth depends, in part, on our ability to penetrate foreign markets, where we will be subject to additional
regulatory burdens and other risks and uncertainties.

Our future profitability will depend, in part, on our ability to commercialize setmelanotide in foreign markets for
which we intend to rely on collaborations with third parties, including RareStone. If we commercialize setmelanotide in
foreign markets, we will be subject to additional risks and uncertainties, including:

● our customers’ ability to obtain reimbursement for setmelanotide in foreign markets;

● our inability to directly control commercial activities because we are relying on third parties;

● the  burden  of  complying  with  complex  and  changing  foreign  regulatory,  tax,  accounting  and  legal

requirements;

● different medical practices and customs in foreign countries affecting acceptance in the marketplace;

● import or export licensing requirements;

● longer accounts receivable collection times;

● longer lead times for shipping;

● language barriers for technical training;

● reduced protection of intellectual property rights in some foreign countries;

● foreign currency exchange rate fluctuations; and

● the interpretation of contractual provisions governed by foreign laws in the event of a contract dispute.

Foreign  sales  of  setmelanotide  could  also  be  adversely  affected  by  the  imposition  of  governmental  controls,

political and economic instability, trade restrictions and changes in tariffs.

Laws  and  regulations  governing  any  international  operations  we  may  have  in  the  future  may  preclude  us  from
developing,  manufacturing  and  selling  setmelanotide  outside  of  the  United  States  and  require  us  to  develop  and
implement costly compliance programs.

If we expand our operations outside of the United States, we must dedicate additional resources to comply with
numerous  laws  and  regulations  in  each  jurisdiction  in  which  we  plan  to  operate.  The  Foreign  Corrupt  Practices  Act  of
1977,  or  the  FCPA,  prohibits  any  U.S.  individual  or  business  from  paying,  offering,  authorizing  payment  or  offering
anything of value, directly or indirectly, to any foreign official, political party or candidate for the purpose of influencing
any act or decision of such third party in order to assist the individual or business in obtaining or retaining business. The
FCPA  also  obligates  companies  whose  securities  are  listed  in  the  United  States  to  comply  with  certain  accounting
provisions  requiring  the  company  to  maintain  books  and  records  that  accurately  and  fairly  reflect  all  transactions  of  the
company,  including  international  subsidiaries,  and  to  devise  and  maintain  an  adequate  system  of  internal  accounting
controls for international operations.

Compliance with the FCPA is expensive and difficult, particularly in countries in which corruption is a recognized
problem. In addition, the FCPA presents particular challenges in the pharmaceutical industry, because, in many countries,
hospitals are operated by the government, and doctors and other hospital employees are considered foreign officials.

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Certain payments to hospitals in connection with clinical trials and other work have been deemed to be improper payments
to government officials and have led to FCPA enforcement actions.

Various laws, regulations and executive orders also restrict the use and dissemination outside of the United States,
or the sharing with certain non-U.S. nationals, of information classified for national security purposes, as well as certain
products  and  technical  data  relating  to  those  products.  If  we  expand  our  presence  outside  of  the  United  States,  it  will
require us to dedicate additional resources to comply with these laws, and these laws may preclude us from developing,
manufacturing or selling certain product candidates and products outside of the United States, which could limit our growth
potential and increase our development costs.

The  failure  to  comply  with  laws  governing  international  business  practices  may  result  in  substantial  civil  and
criminal penalties and suspension or debarment from government contracting. The Securities and Exchange Commission,
or SEC, also may suspend or bar issuers from trading securities on U.S. exchanges for violations of the FCPA’s accounting
provisions.

The  results  of  the  United  Kingdom’s  referendum  on  withdrawal  from  the  EU  may  have  a  negative  effect  on  global
economic conditions, financial markets and our business.

Following  a  national  referendum  and  enactment  of  legislation  by  the  government  of  the  United  Kingdom,  the
United  Kingdom  formally  withdrew  from  the  EU  on  January  31,  2020  and  ratified  a  trade  and  cooperation  agreement
governing its future relationship (commonly referred to as “Brexit”). The agreement, which was applied provisionally from
January 1, 2021 and entered into force on May 1, 2021, addresses trade, economic arrangements, law enforcement, judicial
cooperation  and  a  governance  framework  including  procedures  for  dispute  resolution,  among  other  things.    Because  the
agreement  merely  sets  forth  a  framework  in  many  respects  and  will  require  complex  additional  bilateral  negotiations
between  the  United  Kingdom  and  the  EU  as  both  parties  continue  to  work  on  the  rules  for  implementation,  significant
political and economic uncertainty remains about how the precise terms of the relationship between the parties will differ
from the terms before withdrawal.

Since January 1, 2021, however, the United Kingdom operates under a separate regulatory regime to the EU. EU
laws  regarding  medicinal  products  only  apply  in  respect  of  the  United  Kingdom  to  Northern  Ireland  (as  set  out  in  the
Protocol on Ireland/Northern Ireland). The EU laws that have been transposed into United Kingdom law through secondary
legislation  remain  applicable.  While  the  United  Kingdom  has  indicated  a  general  intention  that  new  laws  regarding  the
development, manufacture and commercialisation of medicinal products in the United Kingdom will align closely with EU
law, there are limited detailed proposals for future regulation of medicinal products. The trade and cooperation agreement
includes specific provisions concerning medicinal products, which include the mutual recognition of GMP, inspections of
manufacturing facilities for medicinal products and GMP documents issued (such mutual recognition can be rejected by
either  party  in  certain  circumstances),  but  does  not  foresee  wholesale  mutual  recognition  of  United  Kingdom  and  EU
pharmaceutical regulations. For example, it is not clear to what extent the United Kingdom will adopt legislation aligned
with,  or  similar  to,  the  EU  CTR  which  became  applicable  on  January  31,  2022  and  which  significantly  reforms  the
assessment and supervision processes for clinical trials throughout the EU. Therefore, there remains political and economic
uncertainty regarding to what extent the regulation of medicinal products will differ between the United Kingdom and the
EU in the future. Any divergences will increase the cost and complexity of running our business, including with respect to
the  conduct  of  clinical  trials.  Brexit  also  materially  impacted  the  regulatory  regime  with  respect  to  the  approval  of  our
product  candidates.  Great  Britain  is  no  longer  covered  by  the  EU’s  procedures  for  the  grant  of  marketing  authorizations
(Northern  Ireland  is  covered  by  the  centralized  authorisation  procedure  and  can  be  covered  under  the  decentralized  or
mutual  recognition  procedures).  As  of  January  1,  2021,  all  existing  centralized  marketing  authorizations  were
automatically converted into United Kingdom marketing authorizations effective in Great Britain and issued with a United
Kingdom  marketing  authorization  number  on  January  1,  2021  (unless  marketing  authorization  holders  opted  out  of  this
scheme).  A  separate  marketing  authorization  is  now  required  to  market  drugs  in  Great  Britain.  It  is  currently  unclear
whether  the  regulator  in  the  United  Kingdom,  the  MHRA  is  sufficiently  prepared  to  handle  the  increased  volume  of
marketing  authorisation  applications  that  it  is  likely  to  receive.  Any  delay  in  obtaining,  or  an  inability  to  obtain,  any
regulatory approvals, as a result of Brexit or otherwise, would prevent us from commercializing our product candidates in
Great  Britain  and  restrict  our  ability  to  generate  revenue  and  achieve  and  sustain  profitability.  If  any  of  these  outcomes
occur, we may be forced to restrict or delay efforts to seek regulatory approval in Great Britain for our product candidates,

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which  could  significantly  and  materially  harm  our  business.  The  United  Kingdom’s  withdrawal  from  the  EU  and  the
associated uncertainty has had and may continue to have a significant adverse effect on global economic conditions and the
stability of global financial markets, and could significantly reduce global market liquidity and restrict the ability of key
market participants to operate in certain financial markets. Asset valuations, currency exchange rates and credit ratings may
be  especially  subject  to  increased  market  volatility.  Any  of  these  factors  could  have  a  significant  adverse  effect  on  our
business, financial condition, results of operations and prospects.

Risks Related to Employee Matters and Managing Growth

Our  future  success  depends  on  our  ability  to  retain  our  key  employees  and  consultants,  and  to  attract,  retain  and
motivate qualified personnel.

We  are  highly  dependent  on  our  executive  leadership  team.  We  have  employment  agreements  with  these
individuals but any individual may terminate his or her employment with us at any time. The loss of their services might
impede  the  achievement  of  our  research,  development  and  commercialization  objectives.  We  also  do  not  have  any  key-
person life insurance on any of these key employees. We rely on consultants and advisors, including scientific and clinical
advisors, to assist us in formulating our development and commercialization strategy. Our consultants and advisors may be
employed  by  employers  other  than  us  and  may  have  commitments  under  consulting  or  advisory  contracts  with  other
entities that may limit their availability to us and may not be subject to non-compete agreements. Recruiting and retaining
qualified scientific personnel and sales and marketing personnel will also be critical to our success. We may not be able to
attract  and  retain  these  personnel  on  acceptable  terms  given  the  competition  among  numerous  pharmaceutical  and
biotechnology companies for similar personnel. We also experience competition for the hiring of scientific personnel from
universities and research institutions. Failure to succeed in clinical trials may make it more challenging to recruit and retain
qualified scientific personnel.

We will need to develop and expand our company, and we may encounter difficulties in managing this development and
expansion, which could disrupt our operations.

We expect to increase our number of employees and the scope of our operations. In particular, we will need to
transition from a research and development company to a commercial company. To manage our anticipated development
and expansion, we must continue to implement and improve our managerial, operational and financial systems, expand our
facilities  and  continue  to  recruit  and  train  additional  qualified  personnel.  Also,  our  management  may  need  to  divert  a
disproportionate amount of its attention away from their day-to-day activities and devote a substantial amount of time to
managing  these  development  activities.  Due  to  our  limited  resources,  we  may  not  be  able  to  effectively  manage  the
expansion  of  our  operations  or  recruit  and  train  additional  qualified  personnel.  This  may  result  in  weaknesses  in  our
infrastructure, and give rise to operational mistakes, loss of business and commercial opportunities, loss of employees and
reduced  productivity  among  remaining  employees.  If  our  management  is  unable  to  effectively  manage  our  expected
development and expansion, our expenses may increase more than expected, our ability to generate or increase our revenue
could be reduced and we may not be able to implement our business strategy.

The physical expansion of our operations may lead to significant costs and may divert financial resources from
other  projects,  such  as  the  development  of  setmelanotide.  Many  of  our  suppliers  and  collaborative  and  clinical  trial
relationships are located outside the United States, and we may in the future seek to hire employees located outside of the
United States. Accordingly, our business may become subject to economic, political, regulatory and other risks associated
with international operations, such as compliance with tax, employment, immigration and labor laws for employees living
or traveling abroad, workforce uncertainty in countries where labor unrest is more common than in the United States, as
well as difficulties associated with staffing and managing international operations, including differing labor relations. Any
of  these  factors  could  materially  affect  our  business,  financial  condition  and  results  of  operations.  Our  future  financial
performance and our ability to commercialize setmelanotide, if approved, and compete effectively will depend, in part, on
our ability to effectively manage the future development and expansion of our company.

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Our internal computer systems, or those of our third party CROs, CMOs or other contractors or consultants, may fail or
suffer security breaches, which could result in a material disruption of setmelanotide development programs, regulatory
investigations, enforcement actions and lawsuits.

In  the  ordinary  course  of  our  business,  we  collect  and  store  sensitive  data,  including  intellectual  property,  our
proprietary  business  information  and  that  of  our  suppliers,  as  well  as  personally  identifiable  information  of  employees.
Similarly,  our  third-party  CROs,  CMOs  and  other  contractors  and  consultants  possess  certain  of  our  sensitive  data.  The
secure maintenance of this information is material to our operations and business strategy. Despite the implementation of
security  measures,  our  internal  computer  systems  and  those  of  our  third-party  CROs,  CMOs  and  other  contractors  and
consultants  are  vulnerable  to  attacks  by  hackers,  damage  from  computer  viruses,  unauthorized  access,  breach  due  to
employee error, malfeasance or other disruptions, natural disasters, terrorism and telecommunication and electrical failures.
Any such attack, incident or breach could compromise our networks and the information stored there could be accessed,
publicly disclosed, lost, corrupted or stolen. Further, attacks upon information technology systems are increasing in their
frequency,  levels  of  persistence,  sophistication  and  intensity,  and  are  being  conducted  by  sophisticated  and  organized
groups and individuals with a wide range of motives and expertise. As a result of the COVID-19 pandemic, we may also
face  increased  cybersecurity  risks  due  to  our  reliance  on  internet  technology  and  the  number  of  our  employees  who  are
working  remotely,  which  may  create  additional  opportunities  for  cybercriminals  to  exploit  vulnerabilities.  Furthermore,
because the techniques used to obtain unauthorized access to, or to sabotage, systems change frequently and often are not
recognized  until  launched  against  a  target,  we  may  be  unable  to  anticipate  these  techniques  or  implement  adequate
preventative measures. We may also experience security breaches that may remain undetected for an extended period. The
legislative and regulatory landscape for privacy and data protection continues to evolve, and there has been an increasing
amount of focus on privacy and data protection issues with the potential to affect our business, including recently enacted
laws in a majority of states requiring security breach notification, some also require implementation of reasonable security
measures and provide a private right of action in the event of a breach. Costs of breach response, mitigation, investigation,
remediation,  notice  and  ongoing  assessments  can  be  considerable.  Thus,  any  access,  disclosure,  damage  or  other  loss  of
information,  including  our  data  being  breached  at  our  partners  or  third-party  providers,  could  result  in  legal  claims  or
proceedings and liability under state, federal and international privacy laws, disruption of our operations, and damage to
our reputation, which could adversely affect our business.

If such an event were to occur and cause interruptions in our operations, it could result in a material disruption of
our  programs.  For  example,  the  loss  of  clinical  trial  data  for  setmelanotide  or  other  product  candidates  could  result  in
delays in our regulatory approval efforts and significantly increase our costs to recover or reproduce the data. To the extent
that any disruption or security breach results in a loss of or damage to our data or applications or other data or applications
relating to our technology or product candidates, or inappropriate disclosure of confidential or proprietary information, we
could incur liabilities and the further development of setmelanotide and our product candidates could be delayed.

Risks Related to Our Common Stock

Our directors and executive officers and their affiliated entities own a significant percentage of our stock and, if they
choose to act together, will be able to exert significant influence over matters subject to stockholder approval.

Our  executive  officers  and  directors  and  their  respective  affiliates,  in  the  aggregate,  hold  shares  representing
approximately 11.9% of our outstanding voting stock as of December 31, 2021.  As a result, if these stockholders were to
choose to act together, they would be able to significantly influence all matters submitted to our stockholders for approval,
as well as our management and affairs. For example, these stockholders could significantly influence elections of directors,
any  amendments  of  our  organizational  documents,  or  approval  of  any  merger,  sale  of  assets,  or  other  major  corporate
transaction. This may prevent or discourage unsolicited acquisition proposals or offers for our common stock that you may
feel are in your best interest as one of our stockholders.

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Anti-takeover provisions in our charter documents and under Delaware law could make an acquisition of us, even one
that may be beneficial to our stockholders, more difficult and may prevent attempts by our stockholders to replace or
remove our current management.

We are a Delaware corporation. Provisions in our amended and restated certificate of incorporation and amended
and restated bylaws may delay or prevent an acquisition of us or a change in our management. In addition, because we are
incorporated in Delaware, we are governed by the provisions of Section 203 of the Delaware General Corporation Law,
which limits the ability of stockholders owning in excess of 15% of our outstanding voting stock to merge or combine with
us.  Although  we  believe  these  provisions  collectively  will  provide  for  an  opportunity  to  obtain  greater  value  for
stockholders  by  requiring  potential  acquirers  to  negotiate  with  our  board  of  directors,  they  would  apply  even  if  an  offer
rejected  by  our  board  were  considered  beneficial  by  some  stockholders.  In  addition,  these  provisions  may  frustrate  or
prevent  any  attempts  by  our  stockholders  to  replace  or  remove  our  current  management  by  making  it  more  difficult  for
stockholders  to  replace  members  of  our  board  of  directors,  which  is  responsible  for  appointing  the  members  of  our
management. Any provision in our amended and restated certificate of incorporation and amended and restated bylaws or
Delaware  law  that  has  the  effect  of  delaying  or  deterring  a  change  in  control  could  limit  the  opportunity  for  our
stockholders to receive a premium for their shares of our common stock, and could also affect the price that some investors
are willing to pay for our common stock.

Market volatility may affect our stock price and the value of your investment.

The market price for our common stock has been volatile and may continue to fluctuate significantly in response

to a number of factors, most of which we cannot control, including, among others:

● plans for, progress of, or results from preclinical studies and clinical trials of setmelanotide;

● the failure of the FDA or EMA to approve IMCIVREE for additional indications;

● announcements of new products, technologies, commercial relationships, acquisitions or other events by us

or our competitors;

● the success or failure of other weight loss therapies and companies targeting rare diseases and orphan drug

treatment;

● regulatory or legal developments in the United States and other countries;

● failure of setmelanotide, if approved, to achieve commercial success;

● fluctuations in stock market prices and trading volumes of similar companies;

● general market conditions and overall fluctuations in U.S. equity markets;

● variations in our quarterly operating results;

● changes in our financial guidance or securities analysts’ estimates of our financial performance;

● changes in accounting principles;

● our ability to raise additional capital and the terms on which we can raise it;

● sales of large blocks of our common stock, including sales by our executive officers, directors and significant

stockholders;

● additions or departures of key personnel;

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● discussion of us or our stock price by the press and by online investor communities; and

● other risks and uncertainties described in these risk factors.

Our quarterly operating results may fluctuate significantly.

We expect our operating results to be subject to quarterly fluctuations. Our net loss and other operating results will

be affected by numerous factors, including:

● variations in the level of expenses related to our development programs;

● addition or termination of clinical trials;

● any intellectual property infringement lawsuit in which we may become involved;

● regulatory developments affecting setmelanotide;

● our execution of any collaborative, licensing or similar arrangements, and the timing of payments we may

make or receive under these arrangements;

● the achievement and timing of milestone payments under our existing collaboration and license agreements;

and

● if setmelanotide receives regulatory approval, the level of underlying demand for that product and customers’

buying patterns.

If  our  quarterly  operating  results  fall  below  the  expectations  of  investors  or  securities  analysts,  the  price  of  our
common  stock  could  decline  substantially.  Furthermore,  any  quarterly  fluctuations  in  our  operating  results  may,  in  turn,
cause the price of our stock to fluctuate substantially.

Our ability to use certain net operating loss carryovers and other tax attributes may be limited.

Under the Code, a corporation is generally allowed a deduction for net operating losses, or NOLs, carried over
from a prior taxable year, and can use such NOLs to offset future taxable income, if any, until such losses are used or, for
NOLs  arising  in  taxable  years  ending  on  or  before  December  31,  2017,  until  such  NOLs  expire.  Other  unused  tax
attributes,  such  as  research  tax  credits  may  also  be  carried  forward  to  offset  future  taxable  income,  if  any,  until  such
attributes are used or expire. As of December 31, 2021, we had approximately $422.3 million and $385.1 million of unused
federal and state NOL carryforwards, respectively, and approximately $9.3 million and $4.2 million of unused federal and
state carryforwards of research tax credits, respectively. Of the federal NOL carryforwards at December 31, 2021, $349.2
million can be carried forward indefinitely, while $73.2 million will begin to expire in 2033.  Additionally, as of December
31, 2021, we had federal orphan drug credits related to qualifying research of $15.4 million.

If a corporation undergoes an “ownership change,” very generally defined as a greater than 50% change by value
in its equity ownership by certain shareholders or groups of shareholders over a rolling three-year period, Sections 382 and
383  of  the  Code  limit  the  corporation’s  ability  to  use  carryovers  of  its  pre-change  NOLs,  credits  and  certain  other  tax
attributes to reduce its tax liability for periods after the ownership change. Our issuance of common stock pursuant to prior
public offerings may have resulted in a limitation under Code Sections 382 and 383, either separately or in combination
with certain prior or subsequent shifts in the ownership of our common stock. Future changes in our stock ownership, some
of which are outside of our control, could also result in an ownership change under Sections 382 and 383 of the Code. In
addition, for taxable years beginning after December 31, 2020, utilization of federal NOLs generated in tax years beginning
after December 31, 2017 are limited to a maximum of 80% of the taxable income for such year, after taking into account
utilization  of  NOLs  generated  in  years  beginning  before  January  1,  2018  and  determined  without  regard  to  such  NOL
deduction. Further regulatory changes could also limited our ability to utilize our NOLs. As a result, our ability

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to use carryovers of NOLs and credits to reduce our future U.S. federal income tax liability may be subject to limitations.
This  could  result  in  increased  U.S.  federal  income  tax  liability  for  us  if  we  generate  taxable  income  in  a  future  period.
Limitations on the use of NOLs and other tax attributes could also increase our state tax liability. Any such limitation could
have a material adverse effect on our results of operations in future years. We have not completed a study to assess whether
an  ownership  change  for  purposes  of  Section  382  or  383  has  occurred,  or  whether  there  have  been  multiple  ownership
changes since our inception, due to the significant costs and complexities associated with such study.

The use of our tax attributes will also be limited to the extent that we do not generate positive taxable income in
future tax periods. We do not expect to generate positive taxable income in the near future and we may never achieve tax
profitability.

Substantial future sales or perceived potential sales of our common stock in the public market could cause the price of
our common stock to decline significantly.

Sales of our common stock in the public market, or the perception that these sales could occur, could cause the
market  price  of  our  common  stock  to  decline  significantly.  As  of  December  31,  2021,  we  had  50,283,574  shares  of
common stock outstanding.

The holders of an aggregate of approximately 5.9 million shares of our common stock, or approximately 11.9% of
our total outstanding common stock as of December 31, 2021, are entitled to rights with respect to the registration of their
shares under the Securities Act, subject to specified conditions, until such shares can otherwise be sold without restriction
under Rule 144 or until the rights terminate pursuant to the terms of the investors’ rights agreement between us and such
holders. We have also registered and intend to continue to register all shares of common stock that we may issue under our
equity  compensation  plans.  Once  we  register  these  shares  under  the  Securities  Act,  the  shares  become  freely  tradable
without  restriction  under  the  Securities  Act,  except  for  shares  purchased  by  affiliates.  Any  sales  of  securities  by  these
stockholders could have a material adverse effect on the trading price of our common stock.

We may be at an increased risk of securities class action litigation.

Historically, securities class action litigation has often been brought against a company following a decline in the
market price of its securities. This risk is especially relevant for us because biotechnology and pharmaceutical companies
have experienced significant stock price volatility in recent years. If we were to be sued, it could result in substantial costs
and a diversion of management’s attention and resources, which could harm our business.

We  do  not  intend  to  pay  dividends  on  our  common  stock  and,  consequently,  your  ability  to  achieve  a  return  on  your
investment will depend on appreciation in the price of our common stock.

We have never declared or paid any cash dividends on our common stock and do not currently intend to do so in
the  foreseeable  future.  We  currently  anticipate  that  we  will  retain  future  earnings  for  the  development,  operation  and
expansion of our business and do not anticipate declaring or paying any cash dividends in the foreseeable future. Therefore,
the success of an investment in shares of our common stock will depend upon any future appreciation in their value. There
is no guarantee that shares of our common stock will appreciate in value or even maintain the price at which you purchased
them.

Provisions in our certificate of incorporation and bylaws and Delaware law might discourage, delay or prevent a change
in  control  of  our  company  or  changes  in  our  management  and,  therefore,  depress  the  market  price  of  our  common
stock.

Our certificate of incorporation and bylaws contain provisions that could depress the market price of our common
stock by acting to discourage, delay or prevent a change in control of our company or changes in our management that the
stockholders of our company may deem advantageous. These provisions, among other things:

● establish a classified board of directors so that not all members of our board are elected at one time;

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● permit only the board of directors to establish the number of directors and fill vacancies on the board;

● provide  that  directors  may  only  be  removed  “for  cause”  and  only  with  the  approval  of  two-thirds  of  our

stockholders;

● authorize the issuance of “blank check” preferred stock that our board could use to implement a stockholder

rights plan (also known as a “poison pill”);

● eliminate the ability of our stockholders to call special meetings of stockholders;

● prohibit stockholder action by written consent, which requires all stockholder actions to be taken at a meeting

of our stockholders;

● prohibit cumulative voting;

● authorize our board of directors to amend the bylaws;

● establish advance notice requirements for nominations for election to our board or for proposing matters that

can be acted upon by stockholders at annual stockholder meetings; and

● require a super-majority vote of stockholders to amend some provisions described above.

In  addition,  Section  203  of  the  General  Corporation  Law  of  the  State  of  Delaware,  or  the  DGCL,  prohibits  a
publicly-held Delaware corporation from engaging in a business combination with an interested stockholder, generally a
person  which  together  with  its  affiliates  owns,  or  within  the  last  three  years  has  owned,  15%  of  our  voting  stock,  for  a
period  of  three  years  after  the  date  of  the  transaction  in  which  the  person  became  an  interested  stockholder,  unless  the
business combination is approved in a prescribed manner.

Any  provision  of  our  certificate  of  incorporation,  bylaws  or  Delaware  law  that  has  the  effect  of  delaying  or
preventing a change in control could limit the opportunity for our stockholders to receive a premium for their shares of our
capital stock and could also affect the price that some investors are willing to pay for our common stock.

Our certificate of incorporation provides that the Court of Chancery of the State of Delaware is the exclusive forum for
substantially  all  disputes  between  us  and  our  stockholders  and  our  bylaws  designate  the  federal  district  courts  of  the
United States as the exclusive forum for actions arising under the Securities Act, which could limit our stockholders’
ability to obtain a favorable judicial forum for disputes with us or our directors, officers or employees.

Our  certificate  of  incorporation  provides  that  the  Court  of  Chancery  of  the  State  of  Delaware  is  the  exclusive
forum  for:  (i)  any  derivative  action  or  proceeding  brought  on  our  behalf;  (ii)  any  action  asserting  a  claim  of  breach  of
fiduciary duty; (iii) any action asserting a claim against us arising under the DGCL, our certificate of incorporation or our
bylaws; and (iv) any action asserting a claim against us that is governed by the internal affairs doctrine. In addition, our
bylaws provide that the federal district courts of the United States are the exclusive forum for any complaint raising a cause
of action arising under the Securities Act. Any person or entity purchasing or otherwise acquiring any interest in any of our
securities shall be deemed to have notice of and consented to the provisions of our certificate of incorporation and bylaws
described above. These exclusive-forum provisions may limit a stockholder’s ability to bring a claim in a judicial forum
that  it  finds  favorable  for  disputes  with  us  or  our  directors,  officers  or  other  employees,  which  may  discourage  lawsuits
against  us  and  our  directors,  officers  and  other  employees.  If  a  court  were  to  find  these  provisions  of  our  certificate  of
incorporation  or  bylaws  to  be  inapplicable  or  unenforceable  in  an  action,  we  may  incur  additional  costs  associated  with
resolving the dispute in other jurisdictions, which could seriously harm our business.

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General Risk Factors

We may acquire businesses or products, form strategic alliances or create joint ventures in the future, and we may not
realize their benefits.

We  may  acquire  additional  businesses  or  products,  form  strategic  alliances  or  create  joint  ventures  with  third
parties that we believe will complement or augment our existing business. If we acquire businesses with promising markets
or  technologies,  we  may  not  be  able  to  realize  the  benefit  of  acquiring  such  businesses  if  we  are  unable  to  successfully
integrate them with our existing operations and company culture. We may encounter numerous difficulties in developing,
manufacturing and marketing any new products resulting from a strategic alliance, joint venture or acquisition that delay or
prevent us from realizing their expected benefits or enhancing our business. We cannot assure you that, following any such
acquisition, we will achieve the expected synergies to justify the transaction.

An active market for our common stock may not be maintained.

Our stock began trading on the Nasdaq Global Market in October 2017 and we can provide no assurance that we
will be able to continue to maintain an active trading market on the Nasdaq Global Market or any other exchange in the
future. If an active market for our common stock is not maintained, it may be difficult for our stockholders to sell shares
without depressing the market price for the shares or at all. An inactive market may also impair our ability to raise capital
by selling shares and may impair our ability to acquire other businesses, applications or technologies using our shares as
consideration.

If  securities  or  industry  analysts  do  not  continue  to  publish  research  or  reports  or  publish  unfavorable  research  or
reports about our business, our stock price and trading volume could decline.

The trading market for our common stock depends in part on the research and reports that securities or industry
analysts  publish  about  us,  our  business,  our  market  or  our  competitors.  We  do  not  control  these  analysts.  If  we  lose
securities or industry analysts coverage of our company, the trading price for our stock would be negatively impacted. If
one or more of the analysts who covers us downgrades our stock, our stock price would likely decline. If one or more of
these analysts issues unfavorable commentary or ceases to cover us or fails to regularly publish reports on us, interest in
our stock could decrease, which could cause our stock price or trading volume to decline.

Raising  additional  capital  may  cause  dilution  to  our  existing  stockholders,  restrict  our  operations  or  require  us  to
relinquish rights.

We  may  seek  additional  capital  through  a  combination  of  private  and  public  equity  offerings,  debt  financings,
collaborations and strategic and licensing arrangements. To the extent that we raise additional capital through the sale of
common  stock  or  securities  convertible  or  exchangeable  into  common  stock,  a  stockholder’s  ownership  interest  in  our
company  will  be  diluted.  In  addition,  the  terms  of  any  such  securities  may  include  liquidation  or  other  preferences  that
materially adversely affect the rights of our stockholders. Debt financing, if available, would increase our fixed payment
obligations and may involve agreements that include covenants limiting or restricting our ability to take specific actions,
such as incurring additional debt, making capital expenditures or declaring dividends. If we raise additional funds through
collaboration,  strategic  partnerships  and  licensing  arrangements  with  third  parties,  we  may  have  to  relinquish  valuable
rights to setmelanotide, our intellectual property or future revenue streams, or grant licenses on terms that are not favorable
to us.

Unfavorable  global  economic  conditions  could  adversely  affect  our  business,  financial  condition  or  results  of
operations.

Our  results  of  operations  could  be  adversely  affected  by  general  conditions  in  the  global  economy  and  in  the
global  financial  markets.  The  global  financial  crisis  caused  extreme  volatility  and  disruptions  in  the  capital  and  credit
markets. A severe or prolonged economic downturn, such as the global financial crisis, could result in a variety of risks to
our  business,  including  weakened  demand  for  setmelanotide  and  our  ability  to  raise  additional  capital  when  needed  on
acceptable terms, if at all. A weak or declining economy could also strain our suppliers, possibly resulting in supply

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disruption,  or  cause  our  customers  to  delay  making  payments  for  our  services.  Any  of  the  foregoing  could  harm  our
business and we cannot anticipate all of the ways in which the current economic climate and financial market conditions
could adversely impact our business.

We  have  incurred  and  will  continue  to  incur  substantial  costs  as  a  result  of  operating  as  a  public  company,  our
management will continue to devote substantial time to new compliance initiatives and corporation governance policies,
and  we  will  need  to  hire  additional  qualified  accounting  and  financial  personnel  with  appropriate  public  company
experience.

As a public company, and particularly now that we are no longer an emerging growth company, we have incurred
and will continue to incur significant legal, accounting and other expenses. The Sarbanes Oxley Act of 2002, the Dodd-
Frank Wall Street Reform and Consumer Protection Act, the listing requirements of the Nasdaq Global Market and other
applicable securities rules and regulations impose various requirements on public companies, including establishment and
maintenance of effective disclosure and financial controls and corporate governance practices. Our management and other
personnel will continue to devote a substantial amount of time to these compliance initiatives and we will need to continue
to hire additional accounting and financial personnel with appropriate public company experience and technical accounting
knowledge.  Even  if  we  are  able  to  hire  appropriate  personnel,  our  existing  operating  expenses  and  operations  will  be
impacted  by  the  direct  costs  of  their  employment  and  the  indirect  consequences  related  to  the  diversion  of  management
resources from product development efforts. Moreover, these rules and regulations will continue to increase our legal and
financial compliance costs and make some activities more time consuming and costly.

These  rules  and  regulations  are  often  subject  to  varying  interpretations,  in  many  cases  due  to  their  lack  of
specificity, and, as a result, their application in practice may evolve over time as new guidance is provided by regulatory
and governing bodies. This could result in future uncertainty regarding compliance matters and higher costs necessitated by
ongoing revisions to disclosure and governance practices.

If we fail to maintain an effective system of internal control over financial reporting, we may not be able to accurately
report our financial results or prevent fraud. As a result, stockholders could lose confidence in our financial and other
public reporting, which would harm our business and the trading price of our common stock.

Effective  internal  control  over  financial  reporting  is  necessary  for  us  to  provide  reliable  financial  reports  and,
together with adequate disclosure controls and procedures, is designed to prevent fraud. Any failure to implement required
new or improved controls, or difficulties encountered in their implementation could cause us to fail to meet our reporting
obligations.  In  addition,  any  testing  by  us  conducted  in  connection  with  Section  404,  or  any  testing  by  our  independent
registered public accounting firm, may reveal deficiencies in our internal control over financial reporting that are deemed
to  be  material  weaknesses  or  that  may  require  prospective  or  retroactive  changes  to  our  financial  statements  or  identify
other areas for further attention or improvement.

Pursuant  to  Section  404,  we  are  required  to  furnish  a  report  by  our  management  on  our  internal  control  over
financial  reporting.  To  continue  to  achieve  compliance  with  Section  404,  we  continue  to  be  engaged  in  a  process  to
document and evaluate our internal control over financial reporting, which is both costly and challenging. In this regard,
we will need to continue to dedicate internal resources, potentially engage outside consultants and adopt a detailed work
plan to assess and document the adequacy of internal control over financial reporting, continue steps to improve control
processes as appropriate, validate through testing that controls are functioning as documented and implement a continuous
reporting and improvement process for internal control over financial reporting. Despite our efforts, there is a risk that we
will not be able to conclude that our internal control over financial reporting is effective as required by Section 404.

In  addition,  because  we  no  longer  qualify  as  an  emerging  growth  company,  we  are  required  to  include  an
attestation report on internal control over financial reporting issued by our independent registered public accounting firm.
If  we  are  unable  to  maintain  effective  internal  control  over  financial  reporting,  we  may  not  have  adequate,  accurate  or
timely financial information, our independent registered public accounting firm may issue a report that is adverse, and we
may  be  unable  to  meet  our  reporting  obligations  as  a  public  company  or  comply  with  the  requirements  of  the  SEC  or
Section  404.  This  could  result  in  a  restatement  of  our  financial  statements,  the  imposition  of  sanctions,  including  the
inability of registered broker dealers to make a market in our common stock, or investigation by regulatory authorities.

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Any such action or other negative results caused by our inability to meet our reporting requirements or comply with legal
and regulatory requirements or by disclosure of an accounting, reporting or control issue could adversely affect the trading
price  of  our  securities  and  our  business.  Material  weaknesses  in  our  internal  control  over  financial  reporting  could  also
reduce our ability to obtain financing or could increase the cost of any financing we obtain. This could result in an adverse
reaction in the financial markets due to a loss of confidence in the reliability of our financial statements.

The  increasing  focus  on  environmental  sustainability  and  social  initiatives  could  increase  our  costs,  harm  our
reputation and adversely impact our financial results.

There  has  been  increasing  public  focus  by  investors,  customers,  environmental  activists,  the  media  and
governmental  and  nongovernmental  organizations  on  a  variety  of  environmental,  social  and  other  sustainability  matters.
We  experience  pressure  to  make  commitments  relating  to  sustainability  matters  that  affect  us,  including  the  design  and
implementation of specific risk mitigation strategic initiatives relating to sustainability. If we are not effective in addressing
environmental, social and other sustainability matters affecting our business, or setting and meeting relevant sustainability
goals,  our  reputation  and  financial  results  may  suffer.  We  may  experience  increased  costs  in  order  to  execute  upon  our
sustainability goals and measure achievement of those goals, which could have a materially adverse impact on our business
and financial condition.

In addition, this emphasis on environmental, social and other sustainability matters has resulted and may result in
the  adoption  of  new  laws  and  regulations,  including  new  reporting  requirements.  If  we  fail  to  comply  with  new  laws,
regulations or reporting requirements, our reputation and business could be adversely impacted.

Item 1B. Unresolved Staff Comments

None.

Item 2. Properties

Our  corporate  headquarters  are  located  in  Boston,  Massachusetts,  where  we  lease  approximately  13,600  square
feet of office space pursuant to lease agreements expiring in May 2025, with a five-year renewal option to extend the lease.
This facility houses our research, clinical, regulatory, commercial and administrative personnel.  See Note 5 to our audited
consolidated financial statements included in this report for additional information about this lease.

We believe that our existing facilities are adequate for our near-term needs, but we may need additional space as
we grow and expand our operations. We believe that suitable additional or alternative office space would be available as
required in the future on commercially reasonable terms.

Item 3. Legal Proceedings

We are not currently a party to any material legal proceedings.

Item 4. Mine Safety Disclosures

Not applicable.

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PART II

Item  5.  Market  for  Registrant’s  Common  Equity,  Related  Stockholder  Matters  and  Issuer  Purchases  of  Equity
Securities

Our  common  stock  has  been  listed  on  The  Nasdaq  Global  Market  under  the  symbol  “RYTM”  since  October  5,

2017. Prior to that date, there was no public trading market for our common stock.

Holders of Common Stock

As  of  February  22,  2022,  there  were  20  holders  of  record  of  our  common  stock.   This  number  does  not  reflect

beneficial owners whose shares are held in street name.

Securities Authorized for Issuance Under Equity Compensation Plans

Information regarding our equity compensation plans and the securities authorized for issuance thereunder is set

forth herein under Part III, Item 12 below.

Dividend Policy

We have never declared or paid any cash dividends on our common stock or any other securities. We anticipate
that we will retain all available funds and any future earnings, if any, for use in the operation of our business and do not
anticipate paying cash dividends in the foreseeable future. In addition, future debt instruments may materially restrict our
ability to pay dividends on our common stock. Payment of future cash dividends, if any, will be at the discretion of the
board of directors after taking into account various factors, including our financial condition, operating results, current and
anticipated  cash  needs,  the  requirements  of  current  or  then-existing  debt  instruments  and  other  factors  the  board  of
directors deems relevant.

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Performance Graph

This  graph  is  not  “soliciting  material,”  is  not  deemed  “filed”  with  the  SEC  and  is  not  to  be  incorporated  by
reference  into  any  filing  of  Rhythm  Pharmaceuticals,  Inc.  under  the  Securities  Act  or  the  Exchange  Act,  whether  made
before or after the date hereof and irrespective of any general incorporation language in any such filing.

The  following  graph  shows  the  total  stockholder  return  of  an  investment  of  $100  in  cash  at  market  close  on
October  5,  2017  (the  first  day  of  trading  of  our  common  stock)  through  December  31,  2021  for  (1)  our  common  stock,
(2)  the  Nasdaq  Composite  Index  (U.S.)  and  (3)  the  Nasdaq  Biotechnology  Index.  Pursuant  to  applicable  Securities  and
Exchange  Commission  rules,  all  values  assume  reinvestment  of  the  full  amount  of  all  dividends,  however  no  dividends
have  been  declared  on  our  common  stock  to  date.  The  stockholder  return  shown  on  the  graph  below  is  not  necessarily
indicative of future performance, and we do not make or endorse any predictions as to future stockholder returns.

Recent Sales of Unregistered Securities

None.  

Purchases of Equity Securities by the Issuer and Affiliated Purchasers

None.

Item 6. [Reserved]

Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations

You should read the following discussion and analysis of our financial condition and results of operations together
with  our  financial  statements  and  related  notes  appearing  elsewhere  in  this  Annual  Report.  In  addition  to  historical
information,  this  discussion  and  analysis  contains  forward-looking  statements  that  involve  risks,  uncertainties  and
assumptions. Our actual results may differ materially from those anticipated in these forward-looking statements as

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a  result  of  certain  factors.  We  discuss  factors  that  we  believe  could  cause  or  contribute  to  these  differences  below  and
elsewhere in this report, including those set forth under Item 1A. “Risk Factors” and under “Cautionary Note Regarding
Forward-Looking Statements” in this Annual Report.  Discussion and analysis of our 2020 fiscal year specifically, as well
as  the  year-over-year  comparison  of  our  2020  financial  performance  to  2019,  are  located  in  Part  II,  Item  7  -
Management’s Discussion and Analysis of Financial Condition and Results of Operations in our Annual Report on Form
10-K for the fiscal year ended December 31, 2020, filed with the SEC on March 1, 2021.

Overview

We  are  a  global,  commercial-stage  biopharmaceutical  company  focused  on  changing  the  paradigm  for  the
treatment  of  rare  genetic  diseases  of  obesity,  which  are  characterized  by  early-onset,  severe  obesity  and  hyperphagia,  a
pathological  and  insatiable  hunger.  While  obesity  affects  hundreds  of  millions  of  people  worldwide,  we  are  advancing
IMCIVREE™ (setmelanotide) as a precision medicine strategy for a subset of individuals who have severe obesity due to
genetic  variants  that  impair  the  melanocortin-4  receptor  (MC4R)  pathway,  a  pathway  in  the  brain  that  is  responsible  for
regulating hunger, caloric intake and energy expenditure, which consequently affect body weight. IMCIVREE, an MC4R
agonist for which we hold worldwide rights, is the first-ever therapy developed for patients with certain ultra-rare genetic
diseases of obesity that is approved or authorized in the United States, European Union (EU) or Great Britain. We made
IMCIVREE  commercially  available  in  the  United  States  for  patients  6  years  and  older  with  obesity  due  to
proopiomelanocortin  (POMC),  proprotein  convertase  subtilisin/kexin  type  1  (PCSK1),  or  leptin  receptor  (LEPR)
deficiency in early 2021, and we are working to achieve market access in several European countries in 2022. In addition
to initial commercial efforts, we are preparing to bring IMCIVREE to additional populations in 2022 and beyond. We are
advancing  a  broad  clinical  development  program  for  setmelanotide  in  patients  with  additional  rare  genetic  diseases  of
obesity in an effort to expand the approved indication to bring this potential therapy to approximately 100,000 to 200,000
patients in the United States and a similarly-sized rare patient population in Europe.

IMCIVREE  was  approved  in  November  2020  by  the  U.S.  Food  and  Drug  Administration  (FDA)  for  chronic
weight management in adult and pediatric patients 6 years of age and older with obesity due to POMC, PCSK1 or LEPR
deficiency confirmed by genetic testing demonstrating variants in POMC, PCSK1, or LEPR genes that are interpreted as
pathogenic, likely pathogenic, or of uncertain significance. The European Commission (EC) and Great Britain’s Medicines
&  Healthcare  Products  Regulatory  Agency  (MHRA),  in  July  and  September  2021,  respectively,  granted  marketing
authorization to IMCIVREE for the treatment of obesity and the control of hunger associated with genetically confirmed
loss-of-function biallelic POMC, including PCSK1, deficiency or biallelic LEPR deficiency in adults and children 6 years
of  age  and  above.  These  approvals  were  based  on  Phase  3  data  demonstrating  a  statistically  significant  and  clinically
meaningful reduction of weight and hunger in patients 12 years old or older with severe obesity due to POMC, PCSK1 or
LEPR  deficiency.  In  addition  to  the  United  States  and  Europe/UK,  we  and  our  partners  are  seeking  approval  for
IMCIVREE to treat patients with these genetic obesities in Israel, China, Hong Kong and Macau.  

Additionally,  we  are  seeking  regulatory  approvals  in  the  United  States  and  Europe  for  setmelanotide  to  treat
obesity and control hunger in patients with Bardet-Biedl syndrome (BBS) or Alström syndrome. In November 2021, we
announced  the  U.S.  FDA  has  accepted  for  filing  our  supplemental  New  Drug  Application  (sNDA)  for  setmelanotide
seeking to expand the approved label to include patients with BBS or Alström syndrome and granted us priority review for
this sNDA.  The FDA has assigned a Prescription Drug User Fee Act (PDUFA) goal date of June 16, 2022 for this sNDA.
In  October  2021,  we  announced  that  we  submitted  a  Type  II  variation  application  to  the  European  Medicines  Agency
(EMA) for setmelanotide for the treatment of obesity and control of hunger in adult and pediatric patients 6 years of age
and older with BBS or Alström syndrome. These regulatory submissions are based on positive results from a pivotal Phase
3  clinical  trial  that  met  its  primary  and  all  key  secondary  endpoints  and  achieved  clinically  meaningful  and  statistically
significant  reductions  in  body  weight  and  in  hyperphagia  associated  with  these  syndromes.  The  submissions  include  a
series  of  comprehensive  individual  patient  narratives  supporting  the  disease  burden  of  BBS.    Our  belief    is  that
setmelanotide,  if  approved,  has  the  potential  to  offer  the  first  therapeutic  option  for  the  early-onset,  severe  obesity  and
unrelenting  hunger  that  characterize  these  syndromes.    Recently,  we  have  decided  to  withdraw  the  Alström  syndrome
indication from the pending Type II variation application based on feedback from the EMA.

We  also  are  advancing  a  broad  clinical  development  program  evaluating  setmelanotide  in  several  ongoing  and

planned clinical trials, and we are leveraging what we believe is the largest known DNA database focused on obesity -

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with  approximately  45,000  sequencing  samples  as  of  December  31,  2021  -  to  improve  the  understanding,  diagnosis  and
care  of  people  living  with  severe  obesity  due  to  certain  variants  in  genes  associated  with  the  MC4R  pathway.  Having
achieved  proof-of-concept  in  our  ongoing  exploratory  Phase  2  Basket  Study  evaluating  setmelanotide  in  patients  with
severe obesity driven by variants in several different MC4R pathway associated genes, we expect to initiate in the first half
of  2022,  the  pivotal  Phase  3  EMANATE  clinical  trial,  a  randomized,  double-blind,  placebo-controlled  to  evaluate
setmelanotide in five independent sub-studies in patients with obesity due to a heterozygous variant of the POMC/PCSK1
genes or LEPR gene, certain rare variants of the SRC1 gene or the SH2B1 gene, or the N221D variant in the PCSK1 gene.
We also have initiated the Phase 2 DAYBREAK clinical trial designed to evaluate setmelanotide in patients who carry a
confirmed variant in one or more of 31 additional genes with strong or very strong relevance to the MC4R pathway. Our
broad clinical program evaluating setmelanotide in rare diseases of obesity also includes the ongoing exploratory Phase 2
Basket study, an ongoing Phase 2 study evaluating setmelanotide in patients with hypothalamic obesity, a Phase 3 study in
pediatric  patients  with  MC4R  pathway  deficiencies  between  the  ages  of  2  and  6  years  old,  and  potential  registration-
enabling study with our once-weekly formulation of setmelanotide.

We are studying additional diseases as part of investigator-initiated protocols. There are currently no effective or
approved treatments for these MC4R pathway-related diseases. The FDA has acknowledged the importance of these results
by  giving  setmelanotide  Breakthrough  Therapy  designation  for  the  treatment  of  obesity  associated  with  genetic  defects
upstream  of  the  MC4R  in  the  leptin  melanocortin  pathways.  The  Breakthrough  Therapy  designation  currently  covers
indications for POMC deficiency obesity, LEPR deficiency obesity, BBS and Alström syndrome.

On January 5, 2021, we entered into an asset purchase agreement with Alexion Pharmaceuticals, Inc., or Alexion,
pursuant  to  which  we  agreed  to  sell  our  Rare  Pediatric  Disease  Priority  Review  Voucher,  PRV,  to  Alexion,  or  the  PRV
Transfer.  We  were  awarded  the  voucher  under  a  FDA  program  intended  to  encourage  the  development  of  certain  rare
pediatric disease product applications. We received the PRV when IMCIVREE was approved by the FDA. Pursuant to the
transfer agreement, Alexion agreed to pay us $100 million in cash upon the closing of the sale.  The PRV Transfer closed
on February 17, 2021.

On  February  9,  2021,  we  completed  an  underwritten  public  offering  in  which  we  sold  5,750,000  shares  of  our
common stock at a public offering price of $30.00 per share, which included the exercise in full by the underwriters of their
option to purchase up to 750,000 additional shares of common stock. We received aggregate net proceeds from the offering
of approximately $161.6 million after deducting underwriting discounts and commissions and offering expenses payable by
us.

          On November 2, 2021, we entered into a sales agreement, or the Sales Agreement, with Cowen and Company 

LLC, or Cowen, as sales agent, pursuant to which we may, from time to time, issue and sell common stock with an 
aggregate value of up to $100 million in "at-the-market" offerings, or the ATM, under our Registration Statement on Form 
S-3 (File No. 333-260689) filed with the SEC on November 2, 2021. Sales of common stock, if any, pursuant to the Sales 
Agreement, may be made in sales deemed to be an “at the market offering” as defined in Rule 415(a) of the Securities Act, 
including sales made directly through The Nasdaq Global Market or on any other existing trading market for our common 
stock. During the year ended December 31, 2021, did not sell any shares of common stock under the Sales Agreement. As 
of December 31, 2021, there was $100.0 million of common stock remaining available for sale under the ATM.

                    Our  operations  to  date  have  been  limited  primarily  to  conducting  research  and  development  activities  for
setmelanotide. To date, we have not generated any significant product revenue and have financed our operations primarily
through the proceeds received from the sales of common and preferred stock, asset sales, as well as capital contributions
from the former parent company, Rhythm Holdings LLC. From August 2015 through August 2017, we raised aggregate net
proceeds of $80.8 million through our issuance of series A preferred stock.  Since our initial public offering, or IPO, on
October 10, 2017 and our underwritten follow-on offerings through February 2021, we have raised aggregate net proceeds
of  approximately  $611.4  million  through  the  issuance  of  our  common  stock  after  deducting  underwriting  discounts,
commissions and offering related transaction costs. As noted above, we also received $100.0 million from an asset sale,
specifically in connection with the PRV Transfer.  In  December  2021,  we  entered  into  an  Exclusive  License  Agreement
with RareStone Group Ltd., and received $7.0 million from the execution of that agreement.

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             We will not generate significant revenue from product sales until we are able to successfully establish a marketing
and  commercialization  infrastructure  for  IMCIVREE.  IMCIVREE  became  commercially  available  to  patients  6  years  of
age and older with obesity due to POMC, PCSK1 or LEPR deficiency in the U.S. in the first quarter of 2021 and following
marketing  authorizations  in  the  European  Union  and  Great  Britain,  we  are  pursuing  a  country-by-country  strategy  to
establish  market  access  and  reimbursement  for  IMCIVREE  in  several  countries.  We  expect  to  continue  to  fund  our
operations  through  the  sale  of  equity,  debt  financings  or  other  sources.  We  intend  to  build  our  own  marketing  and
commercial  sales  infrastructure  and  we  may  enter  into  collaboration  or  out  license  arrangements  with  other  parties  for
certain markets outside the United States. However, we may be unable to raise additional funds or enter into such other
arrangements when needed on favorable terms, or at all. If we fail to raise capital or enter into such other arrangements as,
and when, needed, we may have to significantly delay, scale back or discontinue the development or commercialization of
setmelanotide.

As of December 31, 2021 we had an accumulated deficit of $528.9 million. Our net losses were $69.6 million and
$134.0 million, for the years ended December 31, 2021 and 2020, respectively. We expect to continue to incur significant
expenses and increasing operating losses over the foreseeable future. We expect our expenses will increase substantially in
connection with our ongoing activities, as we:

● continue to conduct clinical trials for setmelanotide;

● engage  contract  manufacturing  organizations,  or  CMOs,  for  the  manufacture  of  clinical  and  commercial-

grade setmelanotide;

● seek regulatory approval for setmelanotide for future indications;

● expand our clinical and financial operations and build a marketing and commercialization infrastructure;

● engage  in  the  sales  and  marketing  efforts  necessary  to  support  the  continued  commercial  efforts  of

IMCIVREE globally;

● take  into  account  the  levels,  timing  and  collection  of  revenue  earned  from  sales  of  IMCIVREE  and  other

products approved in the future, if any; and

● continue to operate as a public company.

As  of  December  31,  2021,  our  cash  and  cash  equivalents  and  short-term  investments  were  approximately
$294.9 million.  We expect that our cash and cash equivalents and short-term investments as of December 31, 2021, will
enable us to fund our operating expenses into the second half of 2023.

Corporate Background

We  are  a  Delaware  corporation  organized  in  February  2013  under  the  name  Rhythm  Metabolic,  Inc.,  and  as  of

October 2015, under the name Rhythm Pharmaceuticals, Inc.

Impact of Novel Coronavirus

We are closely monitoring how the spread of COVID-19 is affecting our employees, business, preclinical studies
and  clinical  trials.  In  response  to  the  COVID-19  pandemic,  we  have  limited  access  to  our  executive  offices  with  most
employees continuing their work outside of our offices and travel has been restricted.  Based on current information we do
not currently anticipate any disruption in the clinical supply of setmelanotide.  Our CMOs have indicated that they have
appropriate  plans  and  procedures  in  place  to  ensure  uninterrupted  future  supply  of  clinical  and  commercial-grade
setmelanotide,  subject  to  potential  limitations  on  their  operations  due  to  COVID-19.   As  a  result,  we  do  not  currently
expect  that  the  COVID-19  pandemic  will  have  a  material  impact  on  our  business,  results  of  operations  and  financial
condition.  At this time, however, there is still uncertainty relating to the trajectory of the pandemic and the impact of

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related  responses,  and  disruptions  caused  by  the  COVID-19  pandemic  have  resulted  and  may  in  the  future  result  in
difficulties  or  delays  in  initiating,  enrolling,  conducting  or  completing  our  planned  and  ongoing  clinical  trials  and  the
incurrence of unforeseen costs as a result of disruptions in clinical supply or preclinical study or clinical trial delays. For
example,  we  experienced  interruption  of  key  clinical  trial  activities,  such  as  patient  attendance  and  clinical  trial  site
monitoring, in our Phase 3 clinical trial evaluating setmelanotide for the treatment of insatiable hunger and severe obesity
in individuals with BBS or Alström syndrome. The impact of COVID-19 on our future results will largely depend on future
developments, which are highly uncertain and cannot be predicted with confidence, such as the duration of the pandemic,
the impact of variants, travel restrictions and social distancing in the United States and other countries, business closures or
business disruptions, the ultimate impact on financial markets and the global economy, the effectiveness of vaccines and
vaccine distribution efforts and the effectiveness of other actions taken in the United States and other countries to contain
and  treat  the  disease.  See  “Risk  Factors—The  COVID-19  pandemic  has  and  may  continue  to  adversely  impact  our
business, including our preclinical studies, clinical trials and our commercialization prospects.” in Part I, Item 1A of this
Annual Report.

Financial Operations Overview

Revenue

            To date, we have not generated significant revenue from product sales. Our lead product candidate, IMCIVREE, 
was approved by the FDA in November 2020 for chronic weight management in adult and pediatric patients six years of 
age and older with obesity due to POMC, PCSK1 or LEPR deficiency confirmed by genetic testing. IMCIVREE became 
commercially available in the U.S. in the first quarter of 2021.  We recorded our first sales of IMCIVREE in March 2021.  
We expect our initial sales of IMCIVREE will be limited by the ultra-rare nature of the disease and limited number of 
diagnosed patients in the United States.

Cost of sales

All of our inventory of IMCIVREE produced prior to FDA approval is available for commercial or clinical use.
 Most of the manufacturing costs have been recorded as research and development expenses in prior periods.  Accordingly,
the costs for IMCIVREE included in our cost of sales for the year ended December 31, 2021 were insignificant.  We expect
cost  of  sales  to  increase  in  2022  as  we  began  to  sell  inventory  that  is  produced  after  we  began  capitalizing  IMCIVREE
commercial inventory.  

Research and development expenses

Research and development expenses consist primarily of costs incurred for our research activities, including our

drug discovery and genetic sequencing efforts, and the clinical development of setmelanotide, which include:

● expenses  incurred  under  agreements  with  third  parties,  including  CROs  that  conduct  research  and
development and preclinical activities on our behalf, and the cost of consultants and CMOs that manufacture
drug products for use in our preclinical studies and clinical trials;

● employee-related expenses including salaries, benefits and stock-based compensation expense;

● the cost of lab supplies and acquiring, developing and manufacturing preclinical and clinical study materials;

● the cost of genetic sequencing of potential patients in clinical studies; and

● facilities, depreciation, and other expenses, which include rent and maintenance of facilities, insurance and

other operating costs.

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We  expense  research  and  development  costs  to  operations  as  incurred.  Nonrefundable  advance  payments  for
goods  or  services  to  be  received  in  the  future  for  use  in  research  and  development  activities  are  recorded  as  prepaid
expenses. The capitalized amounts are expensed as the related goods are delivered or the services are performed.

The following table summarizes our current research and development expenses:

Research and development summary

Research and development expense

December 31, 

2021
$ 104,128

2020
$ 90,450

We are unable to predict the duration and costs of the current or future clinical trials of our product candidates.
The  duration,  costs,  and  timing  of  clinical  trials  and  development  of  setmelanotide  will  depend  on  a  variety  of  factors,
including:

● the scope, rate of progress, and expense of our ongoing, as well as any additional, clinical trials and other

research and development activities;

● the rate of enrollment in clinical trials;

● the safety and efficacy demonstrated by setmelanotide in future clinical trials;

● changes in regulatory requirements;

● changes in clinical trial design; and

● the timing and receipt of any regulatory approvals.

A  change  in  the  outcome  of  any  of  these  variables  with  respect  to  the  development  of  our  product  candidates

would significantly change the costs and timing associated with its development and potential commercialization.

Research  and  development  activities  are  central  to  our  business  model.  Product  candidates  in  later  stages  of
clinical  development  generally  have  higher  development  costs  than  those  in  earlier  stages  of  clinical  development,
primarily due to the increased size and duration of later-stage clinical trials. We expect research and development costs to
increase significantly for the foreseeable future as our setmelanotide and other development programs progress. However,
we do not believe that it is possible at this time to accurately project total program-specific expenses to commercialization
and there can be no guarantee that we can meet the funding needs associated with these expenses.

Selling, general and administrative expenses

Selling  expenses  consist  of  professional  fees  related  to  preparation  for  the  eventual  commercialization  of
setmelanotide as well as salaries and related benefits for commercial employees, including stock-based compensation.  As
we  accelerate  our  preparation  for  commercialization  and  start  to  market  setmelanotide  and  as  we  explore  new
collaborations to develop and commercialize setmelanotide, we anticipate that these expenses will materially increase.

General  and  administrative  expenses  consist  primarily  of  salaries  and  other  related  costs,  including  stock-based
compensation, relating to our full-time employees not involved in R&D or commercial activities. Other significant costs
include rent, legal fees relating to patent and corporate matters and fees for accounting and consulting services.

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The following table summarizes our current selling, general and administrative expenses.

Selling, general and administrative summary
Selling, general and administrative expense

December 31, 

2021
$  68,486

2020
$  46,125

We anticipate that our selling, general and administrative expenses will increase in the future to support continued
and expanding business support needs, commercialization for IMCIVREE in the United States and the European Union as
well as other international markets as well as increased costs of operating as a global commercial stage biopharmaceutical
public company. These increases will likely include increased costs related to the hiring of additional personnel and fees to
outside consultants, lawyers and accountants, compliance with exchange listing and SEC expenses, insurance and investor
relations costs, among other expenses.

Critical Accounting Policies and Estimates

Our management's discussion and analysis of our financial condition and results of operations are based on our
financial statements, which we have prepared in accordance with accounting principles generally accepted in the United
States, or GAAP. The preparation of these financial statements requires us to make estimates and assumptions that affect
the  reported  amounts  of  assets  and  liabilities  and  the  disclosure  of  contingent  assets  and  liabilities  at  the  date  of  the
financial statements, as well as the reported amounts of revenues and expenses during the reporting periods. These items
are  monitored  and  analyzed  by  us  for  changes  in  facts  and  circumstances  on  an  ongoing  basis,  and  material  changes  in
these estimates could occur in the future.  We base our estimates on historical experience and on various other factors that
we  believe  are  reasonable  under  the  circumstances,  the  results  of  which  form  the  basis  for  making  judgments  about  the
carrying value of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these
estimates under different assumptions or conditions.

While  our  significant  accounting  policies  are  described  in  more  detail  in  the  notes  to  our  financial  statements
included elsewhere in this Annual Report, we believe that the following accounting policies are the most critical to aid in
fully understanding and evaluating our financial condition and results of operations.

Accrued research and development expenses

As part of the process of preparing our financial statements, we are required to estimate the value associated with
goods and services received in the period in connection with research and development activities. This process involves
reviewing quotations and contracts, identifying services that have been performed on our behalf and estimating the level of
service  performed  and  the  associated  cost  incurred  for  the  service  when  we  have  not  yet  been  invoiced  or  otherwise
notified of the actual cost, or alternatively, the deferral of amounts paid for goods or services to be incurred in the future.
The majority of our service providers invoice us monthly in arrears for services performed or when contractual milestones
are  met.  We  make  estimates  of  our  accrued  expenses  or  prepaid  expenses  as  of  each  balance  sheet  date  in  our  financial
statements  based  on  facts  and  circumstances  known  to  us  at  the  time  those  financial  statements  are  prepared.  We
periodically  confirm  the  accuracy  of  our  estimates  with  the  service  providers  and  make  adjustments  if  necessary.  The
significant estimates in our accrued research and development expenses include fees paid to CROs, CMOs and consultants
in connection with research and development activities.

We accrue our expenses related to CROs, CMOs and consultants based on our estimates of the services received
and  efforts  expended  pursuant  to  quotes  and  contracts  with  CROs,  CMOs  and  consultants  that  conduct  research  and
development  and  manufacturing  on  our  behalf.  The  financial  terms  of  these  agreements  are  subject  to  negotiation,  vary
from  contract  to  contract  and  may  result  in  uneven  payment  flows.  The  allocation  of  CRO  upfront  expenses  for  both
clinical  trials  and  preclinical  studies  generally  tracks  actual  work  activity.  However,  there  may  be  instances  in  which
payments made to our vendors will exceed the level of services provided and result in a prepayment of the research and
development  expense.  In  accruing  service  fees  delivered  over  a  period  of  time,  we  estimate  the  time  period  over  which
services will be performed and the level of effort to be expended in each period. If the actual timing of the performance of
services or the level of effort varies from our estimate, we adjust accrued or prepaid expense accordingly. Although we do

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not expect our estimates to be materially different from amounts actually incurred, if our estimates of the status and timing
of services performed differ from the actual status and timing of services performed, it could result in us reporting amounts
that are too high or too low in any particular period. To date, there have been no material differences between our estimates
of such expenses and the amounts actually incurred.

Stock-based compensation

We have a 2017 equity incentive plan, or the 2017 Plan. The 2017 Plan provides for the grant of incentive and
non-qualified  stock  options  and  restricted  stock  and  stock  grants  to  employees,  consultants,  advisors  and  directors,  as
determined by the Board of Directors. As of December 31, 2021, we had reserved 8,994,352 shares of common stock under
the  2017  Plan.  Shares  of  common  stock  issued  pursuant  to  awards  are  generally  issued  from  authorized  but  unissued
shares.  The  2017  Plan  provides  that  the  exercise  price  of  incentive  stock  options  cannot  be  less  than  100%  of  the  fair
market value of the common stock on the date of the award for participants who own less than 10% of the total combined
voting  power  of  stock,  and  not  less  than  110%  for  participants  who  own  more  than  10%  of  the  voting  power.  Awards
granted under the 2017 Plan will vest over periods as determined by our Compensation Committee and approved by our
Board of Directors.

We estimate the fair value of our stock option awards to employees and non-employees using the Black-Scholes
option-pricing model, which requires the input of subjective assumptions, including (a) the expected volatility of our stock,
(b) the expected term of the award, (c) the risk-free interest rate, and (d) expected dividends. Previously due to the lack of a
public market for the trading of our common stock and a lack of company-specific historical and implied volatility data, we
based  our  estimate  of  expected  volatility  on  the  historical  volatility  of  a  group  of  companies  in  the  pharmaceutical  and
biotechnology  industries  in  a  similar  stage  of  development  as  us  and  that  are  publicly  traded.  For  these  analyses,  we
selected  companies  with  comparable  characteristics  to  ours  including  enterprise  value,  risk  profiles  and  with  historical
share price information sufficient to meet the expected life of the stock-based awards. We compute the historical volatility
data  using  the  daily  closing  prices  for  the  selected  companies'  shares  during  the  equivalent  period  of  the  calculated
expected term of our stock-based awards. During 2020, we began to estimate volatility by using a blend of our stock price
history for the length of time we have market data for our stock and the historical volatility of similar public companies for
the expected term of each grant.  We will continue to apply this process until a sufficient amount of historical information
regarding the volatility of our own stock price becomes available.

We have estimated the expected life of our employee stock options using the "simplified" method, whereby, the
expected life equals the average of the vesting term and the original contractual term of the option. The risk-free interest
rates for periods within the expected life of the option are based on the U.S. Treasury yield curve in effect during the period
the options were granted. We have elected to account for forfeitures as they occur.  Upon adopting Accounting Standards
Update 2018-07, Improvements to Nonemployee Share-Based Payment Accounting (Topic 718) on July 1, 2018, we elected
that  unsettled  equity-classified  awards  to  nonemployees  for  which  a  measurement  date  has  not  been  established  be
measured using the adoption date fair value.

Income taxes

We account for uncertain tax positions in accordance with the provisions of Accounting Standards Codification, or
ASC,  Topic  740,  Accounting  for  Income  Taxes,  or  ASC  740.  When  uncertain  tax  positions  exist,  we  recognize  the  tax
benefit of tax positions to the extent that the benefit will more likely than not be realized. The determination as to whether
the  tax  benefit  will  more  likely  than  not  be  realized  is  based  upon  the  technical  merits  of  the  tax  position  as  well  as
consideration  of  the  available  facts  and  circumstances.  As  of  December  31,  2021,  we  did  not  have  any  uncertain  tax
positions.

Income  taxes  are  recorded  in  accordance  with  ASC  740,  which  provides  for  deferred  taxes  using  an  asset  and
liability approach. We recognize deferred tax assets and liabilities for the expected future tax consequences of events that
have been included in the financial statements or tax returns. We determine our deferred tax assets and liabilities based on
differences  between  financial  reporting  and  tax  bases  of  assets  and  liabilities,  which  are  measured  using  the  enacted  tax
rates and laws that will be in effect when the differences are expected to reverse. Valuation allowances are provided, if

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based upon the weight of available evidence, it is more likely than not that some or all of the deferred tax assets will not be
realized.

As of December 31, 2021, we had net operating loss carryforwards to reduce federal and state incomes taxes of
approximately $429.3 million and $392.0 million, respectively. If not utilized, these carryforwards begin to expire in 2033.
Of the federal net operating loss carryforwards at December 31, 2021, $356.2 million can be carried forward indefinitely.
  At  December  31,  2021,  we  also  had  available  research  and  development  tax  credits  for  federal  and  state  income  tax
purposes  of  approximately  $9.3  million  and  $3.9  million,  respectively.   Additionally,  as  of  December  31,  2021,  we  had
federal orphan drug credits related to qualifying research of $15.4 million.  These tax credit carryforwards begin to expire
in 2033 for federal purposes and 2028 for state purposes.  

Utilization of the net operating loss and tax credit carryforwards may be subject to a substantial annual limitation
due  to  ownership  change  limitations  that  have  occurred  previously  or  that  could  occur  in  the  future,  as  provided  by
Section  382  of  the  Internal  Revenue  Code  of  1986,  as  amended,  or  the  Code,  or  Section  382,  as  well  as  similar  state
provisions  and  other  provisions  of  the  Code.  Ownership  changes  may  limit  the  amount  of  net  operating  losses  and  tax
credit  carryforwards  that  can  be  utilized  annually  to  offset  future  taxable  income  and  tax,  respectively.  In  general,  an
ownership change, as defined by Section 382, results from transactions that increase the ownership of 5.0% stockholders in
the stock of a corporation by more than 50% in the aggregate over a three-year period.    

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Results of Operations

Comparison of years ended December 31, 2021 and 2020.

The  following  table  summarizes  our  results  of  operations  for  the  years  ended  December  31,  2021  and  2020,

together with the changes in those items in dollars and as a percentage:

Statement of Operations Data:
Product Revenue, net
Costs and expenses:
Cost of sales
Research and development
Selling, general, and administrative

Total costs and expenses
Loss from operations
Other income, net
Net loss

NM=Not meaningful

Year Ended
December 31, 

2021

2020

(in thousands)

Change
$

%  

$

 3,154

$

 — $  3,154 NM

 599
 104,128
 68,486
 173,213
   (170,059)
 100,447

 —
 90,450
 46,125
 136,575
   (136,575)
 2,579

 599 NM

 13,678
 22,361
 36,638
   (33,484)

 15 %
 48 %
 27 %
 25 %
 97,868  3,795 %
 (48)%

$  (69,612) $ (133,996) $  64,384

Product revenue, net increased to $3.2 million in 2021.  There were no product revenues in the comparative prior
period.  We recorded our first sales of IMCIVREE in March 2021 and the year ended December 31, 2021 represents our
first year of sales subsequent to the approval of IMCIVREE in November 2020.  We expect our initial sales of IMCIVREE
will be limited by the ultra-rare nature of the disease and limited number of diagnosed patients in the United States.  To
date, all of our product revenue has been generated in the United States.

Cost of sales increased to $0.6 million in 2021.  There were no cost of sales in the comparative prior period. All of
our  inventory  of  IMCIVREE  produced  prior  to  FDA  approval  is  available  for  commercial  or  clinical  use.    Most  of  the
manufacturing costs have been recorded as research and development expenses in prior periods.  Accordingly, the costs for
IMCIVREE included in our cost of sales for the year ended December 31, 2021 were insignificant and primarily reflect the
amortization of our capitalized sales based milestone payment made to Ipsen upon our first commercial sale as well as a
royalty  due  to  Ipsen  on  our  net  product  sales.   We  expect  cost  of  sales  to  increase  as  we  begin  to  sell  inventory  that  is
produced after we began capitalizing IMCIVREE commercial inventory.

Research  and  development  expense.  Research  and  development  expense  increased  by  $13.7  million  to

$104.1 million in 2021 from $90.5 million in 2020, an increase of 15%. The increase was primarily due to the following:

● an  increase  of  $11.2  million  in  our  clinical  trial  costs  associated  with  new  and  planned  clinical  trials,
including  our  Phase  2  DAYBREAK  and    Phase  3  EMANATE  trials,  Phase  3  pediatrics  trial,  QTc  study,
Phase  2  hypothalamic  obesity  study,  and  increased  enrollment  in  our  long-term  extension  study.    These
increases were partially offset by the conclusion of prior studies, including pivotal Phase 3 studies for POMC
and LEPR, as well as GO-ID;

● an  increase  of  $7.7  million  in  salaries,  benefits  and  stock-based  compensation  related  to  the  hiring  of
additional full-time employees in order to support the growth of our research and development programs; and

● an increase of $1.3 million of pre-clinical expenses associated with second generation drug development.

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The above increases were partially offset by:

● a decrease of $3.0 million due to the milestone expenses associated with the license agreement with Ipsen on
filing the NDA and MMA for setmelanotide for the treatment of POMC and LEPR deficiency obesities;

● a decrease of $2.0 million primarily related to purchases of setmelanotide API and drug product for clinical

trials and preparation for potential commercialization; and

● a decrease of $1.4 million in costs associated with accessing sequencing data from third-party biobanks to

further our genetic research efforts.

Selling,  general  and  administrative  expense.  Selling,  general  and  administrative  expense  increased  by  $22.4
million to $68.5 million in 2021 from $46.1 million in 2020, an increase of 48%. The increase was primarily due to the
following:

● an increase of $9.9 million due to increased compensation and benefits related costs associated with additions
to our executive leadership team, increased headcount to support our expanding business operations as well
as to establish commercial operations in the United States and internationally;

● an increase of $5.9 million due to increased professional fees and consulting services to support the build out
of  our  commercial  operations  in  the  United  States  and  internationally  as  well  as  corporate  legal  and
consulting support for our international expansion;

● an increase of $3.7 million related to efforts to drive patient engagement and disease awareness about rare

genetic causes of obesity and prepare for the potential commercialization of setmelanotide in the U.S.;

● an increase of $1.6 million of fees associated with the sale of our PRV to Alexion; and

● and  increase  of  $1.3  million  of  employee  recruitment  and  other  missellaneous  office  related  expenses  to

support our expanding business operations in the United States and internationally.

Liquidity and Capital Resources

As  of  December  31,  2021,  our  cash  and  cash  equivalents  and  short-term  investments  were  approximately

$294.9 million.

Cash flows

The following table provides information regarding our cash flows for the years ended December 31, 2021 and

2020:

Year Ended December 31, 

2021

2020

(in thousands)

Net cash provided by (used in):

Operating activities
Investing activities
Financing activities

Net (decrease) increase in cash, cash equivalents and restricted cash

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$  (146,003) $  (121,980)
 158,531
 2,009
 38,560

 (62,159)
 166,481
 (41,681)

$

    
    
 
 
 
 
 
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Net cash used in operating activities

The use of cash in all periods resulted primarily from our net losses adjusted for non-cash charges and changes in

components of working capital.

Net  cash  used  in  operating  activities  was  $146.0  million  for  the  year  ended  December  31,  2021,  and  consisted
primarily of a net loss of $147.9 million adjusted for non-cash items, which consisted of the gain on the sale of the PRV,
non-cash stock-based compensation, depreciation and amortization and rent expense.  The change in operating assets and
liabilities reflected a total source of cash of approximately $1.9 million primarily driven by an increase in accounts payable
and accrued expenses of $18.3 million due to the timing of payments, partially offset by an increase of $16.4 million in
prepaid expenses, other current and other long term assets.

Net  cash  used  in  operating  activities  was  $122.0  million  for  the  year  ended  December  31,  2020,  and  consisted
primarily  of  a  net  loss  of  $116.1  million  adjusted  for  non-cash  items,  which  consisted  of  non-cash  stock-based
compensation, depreciation and amortization and rent expense.  The change in operating assets and liabilities reflected a
total use of cash of approximately $5.9 million for an increase in prepaid assets, accounts payable and accrued expenses
due to the timing of payments and an increase in overall operating expenses.

Net cash provided by (used in) investing activities

Net cash used in investing activities was $62.2 million for the year ended December 31, 2021 which relates to the
purchases of short-term investments, net of maturities, of $163.7 million, $0.4 million related to the purchase of property
plant and equipment and  $5.0 million for the acquisition of an intangible asset, partially offset by the $100.0 million in
proceeds from the sale of the PRV and $7.0 million in proceeds from an out-license agreement.

Net cash provided by investing activities for the year ended December 31, 2020 relates to the net maturities of

short-term investments of $158.7 million.

Net cash provided by financing activities

Net  cash  provided  by  financing  activities  was  $166.5  million  for  the  year  ended  December  31,  2021,  which
represents the net proceeds of $161.7 million from our common stock offering in February 2021 and $4.8 million of cash
proceeds from the exercise of stock options and the issuance of common stock from our 2017 Employee Stock Purchase
Plan, or the ESPP.

Net  cash  provided  by  financing  activities  was  $2.0  million  for  the  year  ended  December  31,  2020,  which

represents cash proceeds from the exercise of stock options and the issuance of common stock from the ESPP.

Funding requirements

We  expect  our  expenses  to  increase  in  connection  with  our  ongoing  activities,  particularly  as  we  continue  the
clinical  development  of  and  seek  marketing  approval  for  setmelanotide  for  future  indications.  In  addition,  we  expect  to
incur  significant  commercialization  expenses  related  to  product  sales,  marketing,  manufacturing  and  distribution  to  the
extent  that  such  sales,  marketing  and  distribution  are  not  the  responsibility  of  potential  collaborators.  We  also  expect  to
incur additional costs associated with operating as a public company.

We expect that our $294.9 million of cash and cash equivalents and short-term investments as of December 31,
2021,  will  enable  us  to  fund  our  operating  expenses  into  the  second  half  of  2023.  We  may  need  to  obtain  substantial
additional funding in connection with our research and development activities and any continuing operations thereafter. If
we are unable to raise capital when needed or on favorable terms, we would be forced to delay, reduce or eliminate our
research and development programs or future commercialization efforts.

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Our future capital requirements will depend on many factors, including:

● the costs to commercialize setmelanotide, by building an internal sales force or entering into collaborations

with third parties and providing support services for patients;

● the scope, progress, results and costs of clinical trials for our setmelanotide program;

● the costs, timing and outcome of regulatory review of our setmelanotide program;

● the obligations owed to Ipsen Pharma S.A.S., or Ipsen, Camurus AB, or Camurus and Takeda pursuant to our

license agreements;

● the extent to which we acquire or in-license other product candidates and technologies;

● the costs of preparing, filing and prosecuting patent applications, maintaining and enforcing our intellectual

property rights and defending intellectual property-related claims;

● our ability to establish and maintain additional collaborations on favorable terms, if at all; and

● the costs of operating as a public company and losing our emerging growth company status.

Although IMCIVREE has been approved by the FDA in certain indications, and became commercially available
in the first quarter of 2021, IMCIVREE may not achieve commercial success. In addition, developing our setmelanotide
program  is  a  time-consuming,  expensive  and  uncertain  process  that  may  take  years  to  complete,  and  we  may  never
generate the necessary data or results required to obtain future marketing approvals and achieve product sales. Accordingly,
we will need to continue to rely on additional financing to achieve our business objectives. Adequate additional financing
may not be available to us on acceptable terms, or at all.

In  addition,  the  magnitude  and  duration  of  the  COVID-19  pandemic  and  its  impact  on  our  liquidity  and  future
funding  requirements  is  uncertain  as  of  the  filing  date  of  this  Annual  Report  as  this  continues  to  evolve  globally.  See
“Impact of Novel Coronavirus” above and “Risk Factors— The COVID-19 pandemic has and may continue to adversely
impact our business, including our preclinical studies, clinical trials and our commercialization prospects.” in Part I, Item
1A of this Annual Report for a further discussion of the possible impact of the COVID-19 pandemic on our business.

Until  such  time,  if  ever,  as  we  can  generate  substantial  product  revenues,  we  expect  to  finance  our  cash  needs
through a combination of equity offerings, debt financings, collaborations, strategic alliances and licensing arrangements.  

To  the  extent  that  we  raise  additional  capital  through  the  sale  of  equity  or  convertible  debt  securities,  the
ownership interest of our stockholders will be diluted, and the terms of these securities may include liquidation or other
preferences that adversely affect the rights of our common stockholders. Debt financing, if available, involves agreements
that include covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, making
capital expenditures or declaring dividends.

If we raise funds through additional collaborations, strategic alliances or licensing arrangements with third parties,
we may have to relinquish valuable rights to our setmelanotide program on terms that may not be favorable to us. If we are
unable to raise additional funds through equity or debt financings when needed, we may be required to delay, limit, reduce
or  terminate  our  product  development  or  future  commercialization  efforts  or  grant  rights  to  develop  and  market  our
setmelanotide program that we would otherwise prefer to develop and market ourselves.

Contractual obligations

We enter into agreements in the normal course of business with CROs and CMOs for clinical trials and clinical
supply manufacturing and with vendors for clinical research studies and other services and products for operating purposes.

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We do not classify these as contractual obligations where the contracts are cancelable at any time by us, generally upon
30 days' prior written notice to the vendor.

Milestone  and  royalty  payments  associated  with  our  license  agreements  with  Ipsen,  Camurus  and  Takeda,  have
not been included as contractual obligations as we cannot reasonably estimate if or when they will occur. Under the terms
of the Ipsen license agreement, assuming that setmelanotide is successfully developed, receives regulatory approval and is
commercialized,  Ipsen  may  receive  aggregate  payments  of  up  to  $40.0  million  upon  the  achievement  of  certain
development  and  commercial  milestones  under  the  license  agreement  and  royalties  on  future  product  sales  and  at
December 31, 2021 there were $31.0 million of remaining milestones that may be achieved and due to Ipsen at a future
date. We expect to pay Ipsen a $4.0 million milestone in 2022 upon our first commercial sale of IMCIVREE in the Europe.
 The  majority  of  the  aggregate  payments  under  the  Ipsen  license  agreement  are  for  milestones  that  may  be  achieved  no
earlier than first commercial sale of setmelanotide. In the event that we enter into a sublicense agreement, we will make
payments to Ipsen, depending on the date of the sublicense agreement, ranging from 10% to 20% of all revenues actually
received under the sublicense agreement. Under the terms of the Camurus license agreement, assuming that setmelanotide
is successfully developed, receives regulatory approval and is commercialized, Camurus may receive aggregate payments
of  up  to  $64.75  million  upon  the  achievement  of  certain  development  and  commercial  milestones  under  the  license
agreement  and  royalties  on  future  product  sales  and  at  December  31,  2021  there  were  $63.5  million  of  remaining
milestones that may be achieved and due to Camurus at a future date. We expect to pay Camurus a $1.0 million milestone
in  2022  upon  the  achievement  of  a  development  milestone.  The  majority  of  the  aggregate  payments  under  the  Camurus
license  agreement  are  for  milestones  that  may  be  achieved  no  earlier  than  first  commercial  sale  of  this  formulation  of
setmelanotide.    Under  the  terms  of  the  Takeda  license  agreement,  assuming  that  RM-853,  is  successfully  developed,
receives regulatory approval and is commercialized, Takeda may receive aggregate payments of up to $140.0 million upon
the  achievement  of  certain  development  and  commercial  milestones  under  the  license  agreement  and  royalties  on  future
product sales. The majority of the aggregate payments under the Takeda license agreement are for milestones that may be
achieved no earlier than first commercial sale of the RM-853.

Based  on  our  current  development  plans as of December 31, 2021,  potential payments due to third parties,
during  the  next  12  months  from  the  filing  of  this  Annual  Report are estimated to be approximately $5.0 million in
commercial and development milestones, in connection with our license agreements. These milestones generally become
 due  and  payable  upon achievement of such milestones or sales.  When the achievement of these milestones or sales have
not occurred, such contingencies are not recorded in our financial statements and are excluded from the table below.

In August 2018, we amended our existing Lease Agreement for our head office facility in Boston, Massachusetts.
The new lease term commenced in May 2019 and has a term of six years with a five-year renewal option to extend the
lease.  The new lease includes approximately 13,600 square feet of office space.

Recent Accounting Pronouncements

For  a  discussion  of  pending  and  recently  adopted  accounting  pronouncements,  see  Note  2  to  our  audited

consolidated financial statements included elsewhere in this Annual Report.

Item 7A. Quantitative and Qualitative Disclosures About Market Risk

Our primary exposure to market risk is interest rate sensitivity, which is affected by changes in the general level of
U.S. interest rates, particularly because our investments, including cash equivalents, are in the form, or may be in the form
of, money market funds or marketable securities and are or may be invested in U.S. Treasury and U.S. government agency
obligations. Due to the short-term maturities and low risk profiles of our investments, an immediate 100 basis point change
in interest rates would not have a material effect on the fair market value of our investments.

We are not materially exposed to market risk related to changes in foreign currency exchange rates.

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Item 8. Financial Statements and Supplementary Data

See the consolidated financial statements filed as part of this Annual Report as listed under Item 15 below.

Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosures

Not Applicable.

Item 9A. Controls and Procedures

Limitations on Effectiveness of Controls and Procedures

In designing and evaluating our disclosure controls and procedures, management recognizes that any controls and
procedures,  no  matter  how  well  designed  and  operated,  can  provide  only  reasonable  assurance  of  achieving  the  desired
control objectives. In addition, the design of disclosure controls and procedures must reflect the fact that there are resource
constraints  and  that  management  is  required  to  apply  judgment  in  evaluating  the  benefits  of  possible  controls  and
procedures relative to their costs.

Evaluation of Disclosure Controls and Procedures

Our  management,  with  the  participation  of  our  principal  executive  officer  and  principal  financial  officer,  has
evaluated the effectiveness of our disclosure controls and procedures (as defined in Rules 13a- 15(e) and 15d- 15(e) under
the Securities Exchange Act of 1934, as amended, as of the end of the period covered by this Annual Report. Based on
such  evaluation,  our  principal  executive  officer  and  principal  financial  officer  have  concluded  that  as  of  December  31,
2021, our disclosure controls and procedures were effective at the reasonable assurance level.

Management’s Annual Report on Internal Control over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting

(as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act).

Our  management  assessed  the  effectiveness  of  our  internal  control  over  financial  reporting  as  of  December  31,
2021. In making this assessment, it used the criteria established in Internal Control—Integrated Framework (2013) issued
by  the  Committee  of  Sponsoring  Organizations  of  the  Treadway  Commission  (COSO).  Based  on  such  assessment,  our
management has concluded that our internal control over financial reporting was effective, as of December 31, 2021. Ernst
& Young LLP, our independent registered public accounting firm, has issued an attestation report on our internal control
over  financial  reporting,  which  appears  in  this  Item  under  the  heading  “Report  of  Independent  Registered  Public
Accounting Firm” below.

Changes in Internal Control Over Financial Reporting

There  were  no  changes  in  our  internal  control  over  financial  reporting  (as  defined  in  Rules  13a-15(f)  and  15d-
15(f)  under  the  Exchange  Act)  that  occurred  during  the  fourth  quarter  of  2021  that  have  materially  affected,  or  are
reasonably likely to materially affect, our internal control over financial reporting.

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Stockholders and the Board of Directors of Rhythm Pharmaceuticals, Inc.

Opinion on Internal Control Over Financial Reporting

We have audited Rhythm Pharmaceuticals, Inc.’s internal control over financial reporting as of December 31, 2021, based
on criteria established in Internal Control – Integrated Framework issued by the Committee of Sponsoring Organizations of
the Treadway Commission (2013 framework), (the COSO criteria). In our opinion, Rhythm Pharmaceuticals, Inc. (the

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Company) maintained, in all material respects, effective internal control over financial reporting as of December 31, 2021,
based on the COSO criteria.

We  also  have  audited,  in  accordance  with  the  standards  of  the  Public  Company  Accounting  Oversight  Board  (United
States)  (PCAOB),  the  consolidated  balance  sheets  of  the  Company  as  of  December  31,  2021  and  2020,  the  related
consolidated statements of operations and comprehensive loss, stockholders’ equity and cash flows for each of the three
years  in  the  period  ended  December  31,  2021,  and  the  related  notes  and  our  report  dated  March  1,  2022  expressed  an
unqualified opinion thereon.

Basis for Opinion

The Company’s management is responsible for maintaining effective internal control over financial reporting and for its
assessment  of  the  effectiveness  of  internal  control  over  financial  reporting  included  in  the  accompanying  Management’s
Annual Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Company’s
internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB
and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the
applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform
the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in
all material respects.

Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material
weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk,
and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides
a reasonable basis for our opinion.

Definition and Limitations of Internal Control Over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the
reliability  of  financial  reporting  and  the  preparation  of  financial  statements  for  external  purposes  in  accordance  with
generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and
procedures  that  (1)  pertain  to  the  maintenance  of  records  that,  in  reasonable  detail,  accurately  and  fairly  reflect  the
transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded
as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and
that receipts and expenditures of the company are being made only in accordance with authorizations of management and
directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized
acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also,
projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate
because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ Ernst & Young LLP

Boston, Massachusetts
March 1, 2022

Item 9B. Other Information

None

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Item 9C. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections.

Not applicable.

Item 10. Directors, Executive Officers and Corporate Governance

PART III

We  have  adopted  a  Code  of  Business  Conduct  and  Ethics  for  all  of  our  directors,  officers  and  employees,
including our principal executive officer, principal financial officer, principal accounting officer or controller, or persons
performing similar functions. We have posted a current copy of our Code of Business Conduct and Ethics on our website at
www.rhythmtx.com  in  the  “Investors  &  Media”  section  under  “Corporate  Governance.”  We  intend  to  disclose  on  our
website any amendments to, or waivers from, our Code of Business Conduct and Ethics that are required to be disclosed
pursuant  to  the  rules  of  the  SEC,  as  well  as  Nasdaq’s  requirement  to  disclose  waivers  with  respect  to  directors  and
executive officers.  The information contained on our website is not considered part of, or incorporated by reference into,
this Annual Report or any other filing that we make with the SEC.

The  remaining  information  required  under  this  item  is  incorporated  herein  by  reference  to  our  definitive  proxy
statement  for  our  2022  annual  meeting  of  stockholders,  which  proxy  statement  will  be  filed  with  the  Securities  and
Exchange Commission not later than 120 days after the close of our fiscal year ended December 31, 2021.

Item 11. Executive Compensation

The information required under this item is incorporated herein by reference to our definitive proxy statement for
our  2022  annual  meeting  of  stockholders,  which  proxy  statement  will  be  filed  with  the  Securities  and  Exchange
commission not later than 120 days after the close of our fiscal year ended December 31, 2021.

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

Equity Compensation Plan Information

The following table provides information as of December 31, 2021, regarding our common stock that may be

issued under (1) our 2017 Equity Incentive Plan, or the 2017 Plan; and (2) our 2017 Employee Stock Purchase Plan, or the
2017 ESPP.

Plan Category:
Equity compensation plans approved by
stockholders
2017 Plan
2017 ESPP

Equity compensation plans not approved
by stockholders
Total

Number of Securities
to be Issued Upon Exercise
of Outstanding Options,

Weighted-Average
Exercise Price
of Outstanding Options,

Number of Securities
Available for Future
Issuance Under Equity

Warrants and Rights

Warrants and Rights

Compensation Plans

 7,129,333
 —

 —
 7,129,333

$

$

 21.84

 —  

 —
 21.84

 1,865,019
 962,942

 —
 2,827,961

(1) The 2017 Plan provides for an annual increase on each January 1 commencing on January 1, 2018, by an amount equal to 4% of the number of shares
of common stock outstanding as of the end of the immediately preceding fiscal year, provided that the Board may provide for no increase or that the
increase will be a lesser number of shares.

(2) The 2017 ESPP provides for an annual increase on each January 1 commencing on January 1, 2018 and ending on and including January 1, 2027, by
an amount equal to the lesser of (i) 1% of the number of shares of common stock outstanding as of the end of the immediately preceding fiscal year or
(ii) 682,102, provided that the Board may provide for no increase or that the increase will be a lesser number of shares.

123

    
    
    
 
 
 
 
 
 
 
 
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Other

The  remaining  information  required  under  this  item  is  incorporated  herein  by  reference  to  our  definitive  proxy
statement  for  our  2022  annual  meeting  of  stockholders,  which  proxy  statement  will  be  filed  with  the  Securities  and
Exchange commission not later than 120 days after the close of our fiscal year ended December 31, 2021.

Item 13. Certain Relationships and Related Transactions, and Director Independence

The information required under this item is incorporated herein by reference to our definitive proxy statement for
our  2022  annual  meeting  of  stockholders,  which  proxy  statement  will  be  filed  with  the  Securities  and  Exchange
commission not later than 120 days after the close of our fiscal year ended December 31, 2021.

Item 14. Principal Accountant Fees and Services

The information required under this item is incorporated herein by reference to our definitive proxy statement for
our  2022  annual  meeting  of  stockholders,  which  proxy  statement  will  be  filed  with  the  Securities  and  Exchange
commission not later than 120 days after the close of our fiscal year ended December 31, 2021.

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Table of Contents

Item 15. Exhibits and Financial Statement Schedules

(a) 1. Consolidated Financial Statements.

PART IV

For a list of the consolidated financial statements included herein, see Index on page F-1 of this report.

2. Financial Statement Schedules.

All financial statement schedules have been omitted because the required information is either presented in the
consolidated financial statements or the notes thereto or is not applicable or required.

3. List of Exhibits.

The following is a list of exhibits filed as part of this Annual Report.

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Table of Contents

Exhibit
Number
2.1

3.1
3.2
4.1
4.2.1

4.2.2

4.3

4.4

10.1†
10.2†

10.3.1†

10.3.2†

10.4.1†
10.4.2†

10.5.1†*

10.5.2†*

10.6†*

10.7‡

10.8‡

10.9‡

10.10‡‡*

10.11.1‡

10.12.2‡

Exhibit Index

Exhibit Description

Asset Purchase Agreement, dated January 5, 2021,
between the Registrant and Alexion Pharmaceuticals, Inc.
Amended and Restated Certificate of Incorporation.
Amended and Restated Bylaws.
Form of Common Stock Certificate.
Amended and Restated Investors' Rights Agreement,
dated August 21, 2017.
Amendment No. 1 to Amended and Restated Investors'
Rights Agreement, dated January 25, 2021.
Form of Indenture to be entered into between the
Registrant and a trustee acceptable to the registrant.
Description of the Registrant’s Securities registered
pursuant to Section 12 of the Securities Exchange Act of
1934.
Form of Indemnification Agreement.
2015 Equity Incentive Plan and Form of Option
Agreement and Notice of Exercise.
2017 Equity Incentive Plan and Form of Option
Agreement and Notice of Exercise.
2017 Equity Incentive Plan Restricted Stock Unit Award
Agreement
2017 Employee Stock Purchase Plan
First Amendment to the 2017 Employee Stock Purchase
Plan
2022 Employment Inducement Plan and Form of Option
Agreement
2022 Employment Inducement Plan Form of Restricted
Stock Unit Agreement
Summary of Non-Employee Director Compensation
Policy
License Agreement, dated March 21, 2013, by and
between the Registrant (f/k/a Rhythm Metabolic, Inc.) and
Ipsen Pharma S.A.S.
License Agreement, dated January 4, 2016, by and
between the Registrant and Camurus AB.
License Agreement, dated March 30, 2018, by and
between the Registrant and Takeda Pharmaceutical
Company Limited.
License Agreement, dated December 3, 2021, by and
between the Registrant and RareStone Group Ltd.
Development and Manufacturing Services Agreement,
dated July 17, 2013, by and between the Registrant (f/k/a
Rhythm Metabolic, Inc.) and Peptisyntha Inc. (n/k/a
Corden Pharma International).
First Amendment to Development and Manufacturing
Services Agreement, dated February 20, 2020, by and
between the Registrant and Corden Pharma Brussels S.A.

126

Incorporated by Reference

Number

Form

8-K

Date
1/5/2021

10-Q
8-K
S-1/A
S-1

5/4/2020
12/11/2020
9/25/2017
9/5/2017

10-Q

11/02/2021

S-3

11/2/2021

10-K

3/2/2020

2.1

3.1
3.1
4.1
4.2

4.1

4.3

4.5

S-1/A
S-1/A

9/25/2017
9/25/2017

10.1
10.21

10-Q

11/14/2017

10.2

10-K

3/2/2020

10-Q
S-1

11/14/2017
6/18/2018

10.18

10.10
10.17

S-1

9/5/2017

10.6

S-1

9/5/2017

10-Q

5/14/2018

10.8

10.1

S-1

9/5/2017

10.7

10-Q

5/4/2020

10.3

    
    
    
    
10-Q

8/3/2020

10.1

S-1

9/5/2017

10.15

S-1

9/5/2017

10.11

10-K

3/8/2019

10.9

8-K

8/9/2018

10.1

10-Q

5/4/2020

10-Q

11/2/2020

10-K

3/1/2021

10-K

3/1/2021

10.2

10.1

10.15

10.15

10-K

3/1/2021

10.16

8-K

7/21/2020

10.1

10-Q

08/03/2021

10.1

10-Q

11/02/2021

10.2

Table of Contents

10.13.3‡

10.14

10.15.1

10.16.2

10.17.3

10.18†

10.19†

10.20†

10.21.1†

10.21.2†*

10.22†

10.23†

10.24†

10.25†

21.1*
23.1*

31.1*

31.2*

32.1**

32.2**

101.INS*

Second Amendment to Development and Manufacturing
Services Agreement, dated July 15, 2020, by and between
the Registrant and Corden Pharma Brussels S.A.
Development and Manufacturing Services Agreement,
dated as of December 21, 2016, by and between
Registrant and Recipharm Monts S.A.S.
Lease, dated November 25, 2015, by and between the
Registrant and 500 Boylston & 222 Berkeley Owner (DE)
LLC.
First Amendment to Lease, dated April 15, 2016, by and
between the Registrant and 500 Boylston & 222 Berkeley
Owner (DE) LLC.
Second Amendment to Lease, dated August 6, 2018, by
and between the Registrant and 500 Boylston & 222
Berkeley Owner (DE) LLC.
Offer Letter, dated December 21, 2017, by and between
the Registrant and Hunter Smith.
Offer Letter, dated September 4, 2020, by and between
the Registrant and Yann Mazabraud.
Offer Letter, dated May 10, 2018, by and between the
Registrant and Simon D. Kelner.
Offer Letter, dated September 14, 2018, by and between
the Registrant and Murray Stewart M.D.
Consulting Agreement, dated September 11, 2021,  by 
and between the Registrant and Murray Stewart, D.M., 
F.R.C.P.
Offer Letter, dated September 25, 2020, by and between
the Registrant and Jennifer Chien.
Offer Letter, dated July 16, 2020, by and between the
Registrant and David P. Meeker M.D.
Offer Letter, dated July 9, 2021, by and between the
Registrant and Pamela Cramer
Offer Letter, dated September 1, 2021, by and between
the Registrant and Linda Shapiro Manning, M.D.
List of Subsidiaries.
Consent of Ernst & Young LLP, Independent Registered
Public Accounting Firm.
Certification of the Chief Executive Officer, as required
by Section 302 of the Sarbanes-Oxley Act of 2002 (18
U.S.C. 1350).
Certification of the Chief Financial Officer, as required by
Section 302 of the Sarbanes-Oxley Act of 2002 (18
U.S.C. 1350).
Certification of the Chief Executive Officer, as required
by Section 906 of the Sarbanes-Oxley Act of 2002 (18
U.S.C. 1350).
Certification of the Chief Financial Officer, as required by
Section 906 of the Sarbanes-Oxley Act of 2002 (18
U.S.C. 1350).

Inline XBRL Instance Document- the Instance Document
does not appear in the interactive data file because its
XBRL tags are embedded within the Inline XBRL
document.

127

Table of Contents

101.SCH*
101.CAL*

101.DEF*

101.LAB*

101.PRE*

104*

Inline XBRL Taxonomy Extension Schema Document.
Inline XBRL Taxonomy Extension Calculation Linkbase
Document.
Inline XBRL Taxonomy Extension Definition Linkbase
Document.
Inline XBRL Taxonomy Extension Label Linkbase
Document.
Inline XBRL Taxonomy Extension Presentation Linkbase
Document.
Cover Page Interactive Data File (formatted as Inline
XBRL and contained in Exhibit 101).

*            Filed herewith.
**          Furnished and not filed herewith.
†            Indicates management contract or compensatory plan.
‡                         Indicates  confidential  treatment  has  been  requested  with  respect  to  specific  portions  of  this  exhibit.  Omitted
portions have been filed with the Securities and Exchange Commission pursuant to Rule 406 of the Securities Act.
Indicates that portions of this exhibit (indicated by asterisks) have been omitted pursuant to Regulation S-K, Item
601(b)(10).  Such  omitted  information  is  not  material  and  the  registrant  customarily  and  actually  treats  such
information as private or confidential.

‡‡

Item 16. Form 10-K Summary

None

128

Table of Contents

Pursuant to the requirements of Section 13 or 15(d) of the Securities Act of 1934, the registrant has duly caused

this report to be signed on its behalf by the undersigned, thereunto duly authorized.

SIGNATURES

RHYTHM PHARMACEUTICALS, INC.

By:

/s/ David P. Meeker M.D.
David P. Meeker M.D.
President and Chief Executive Officer

Pursuant  to  the  requirements  of  the  Securities  Act  of  1934,  this  report  has  been  signed  below  by  the  following

persons on behalf of the registrant and in the capacities and on the dates indicated.

Name

Title

/s/ David P. Meeker M.D.
David P. Meeker M.D.

Chief Executive Officer, Director, Chairman of the Board
(Principal Executive Officer)

/s/ Hunter Smith
Hunter Smith

/s/ William T. Roberts
William T. Roberts

/s/ Edward T. Mathers
Edward T. Mathers

/s/ Stuart Arbuckle
Stuart Arbuckle

/s/ Camille L. Bedrosian, M.D.
Camille L. Bedrosian M.D.

/s/ Jennifer L. Good
Jennifer L. Good

/s/ Christophe R. Jean
Christophe R. Jean

/s/ David W. J. McGirr
David W. J. McGirr

/s/ Lynn A. Tetrault
Lynn A. Tetrault

Chief Financial Officer
(Principal Financial Officer)

Chief Accounting Officer
(Principal Accounting Officer)

Lead Director

Director

Director

Director

Director

Director

Director

129

Date

March 1, 2022

March 1, 2022

March 1, 2022

March 1, 2022

March 1, 2022

March 1, 2022

March 1, 2022

March 1, 2022

March 1, 2022

March 1, 2022

    
    
Table of Contents

RHYTHM PHARMACEUTICALS, INC. 

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

Report of Independent Registered Public Accounting Firm (PCAOB ID No. 42)

Audited Consolidated Financial Statements:
Consolidated Balance Sheets
Consolidated Statements of Operations and Comprehensive Loss
Consolidated Statements of Stockholders’ Equity
Consolidated Statements of Cash Flows
Notes to Consolidated Financial Statements

F-1

Page No.

F-2

F-4
F-5
F-6
F-7
F-8

Table of Contents

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Stockholders and the Board of Directors of Rhythm Pharmaceuticals, Inc.

Opinion on the Financial Statements

We  have  audited  the  accompanying  consolidated  balance  sheets  of  Rhythm  Pharmaceuticals,  Inc.  (the  Company)  as  of
December  31,  2021  and  2020,  the  related  consolidated  statements  of  operations  and  comprehensive  loss,  stockholders’
equity and cash flows for each of the three years in the period ended December 31, 2021, and the related notes (collectively
referred to as the “consolidated financial statements”). In our opinion, the consolidated financial statements present fairly,
in  all  material  respects,  the  financial  position  of  the  Company  at  December  31,  2021  and  2020,  and  the  results  of  its
operations and its cash flows for each of the three years in the period ended December 31, 2021, in conformity with U.S.
generally accepted accounting principles.

We  also  have  audited,  in  accordance  with  the  standards  of  the  Public  Company  Accounting  Oversight  Board  (United
States)  (PCAOB),  the  Company's  internal  control  over  financial  reporting  as  of  December  31,  2021,  based  on  criteria
established  in  Internal  Control  –  Integrated  Framework  issued  by  the  Committee  of  Sponsoring  Organizations  of  the
Treadway Commission (2013 framework), and our report dated March 1, 2022 expressed an unqualified opinion thereon.

Basis for Opinion

These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion
on the Company’s financial statements based on our audits. We are a public accounting firm registered with the PCAOB
and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the
applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We  conducted  our  audits  in  accordance  with  the  standards  of  the  PCAOB.  Those  standards  require  that  we  plan  and
perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement,
whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the
financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures
included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits
also  included  evaluating  the  accounting  principles  used  and  significant  estimates  made  by  management,  as  well  as
evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our
opinion.

F-2

Table of Contents

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current period audit of the financial statements
that  was  communicated  or  required  to  be  communicated  to  the  audit  committee  and  that:  (1)  relates  to  accounts  or
disclosures that are material to the financial statements and (2) involved our especially challenging, subjective or complex
judgments.  The  communication  of  the  critical  audit  matter  does  not  alter  in  any  way  our  opinion  on  the  consolidated
financial  statements,  taken  as  a  whole,  and  we  are  not,  by  communicating  the  critical  audit  matter  below,  providing  a
separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Description  of  the
Matter

How  We  Addressed
the  Matter  in  Our
Audit

Accrued and Prepaid Research and Development Expenses

The  Company’s  total  accrued  expenses  and  other  current  liabilities  were  $30.1  million  at
December 31, 2021, which included the estimated obligation for research and development
expenses  incurred  as  of  December  31,  2021  but  not  paid  as  of  that  date.  In  addition,  the
Company’s  total  prepaid  expenses  and  other  current  assets  were  $12.5  million  and  other
long-tem assets were $11.8 million at December 31, 2021, which included amounts that were
paid  in  advance  of  services  incurred  pursuant  to  research  and  development  activities.  As
discussed  in  Note  2  of  the  consolidated  financial  statements,  the  Company’s  research  and
development expenses are based on the Company’s estimates of the progress of the related
studies or clinical trials, including the phase or completion of events, invoices received, and
contracted costs, which results in an accrual or prepayment at period end.

Auditing  the  Company’s  accrued  and  prepaid  research  and  development  expenses  was
especially challenging due to the application of significant management judgment about the
estimate of services provided but not yet invoiced. Specifically, the amount of accrued and
prepaid  research  and  development  expenses  recognized  is  sensitive  to  the  availability  of
information to make the estimate, including the estimate of the period over which services
will be performed, the associated cost of such services, and the level of services performed
and progress in the period for which the Company has not yet received an invoice from the
supplier. Additionally, due to the long duration of clinical trials and the timing of invoicing
received from third parties, the actual amounts incurred are not always known by the report
date.

To  evaluate  the  Company’s  estimate  of  services  incurred  as  of  period  end  pursuant  to  its
research and development activities, our audit procedures included, among others, testing the
completeness and accuracy of the underlying data used in the estimates and evaluating the
significant assumptions stated above that are used by management to estimate the recorded
amounts.  To  assess  the  reasonableness  of  the  significant  assumptions,  we  obtained
information regarding the nature and extent of progress of clinical trials and other activities
from the Company’s research and development personnel that oversee the clinical trials and
obtained information directly from third parties which indicated the third parties’ estimate of
costs incurred to date. To evaluate the completeness and valuation of the accrued or prepaid
research  and  development  expenses,  we  compared  invoices  received  by  the  Company
subsequent to December 31, 2021 to the amounts recognized by the Company as of that date.
We inspected the Company’s contracts with third parties and any pending change orders to
assess  the  impact  to  the  amounts  recorded.  We  also  independently  estimated  the  services
incurred  by  the  respective  third-party  and  compared  it  to  the  amount  recognized  by  the
Company.

/s/ Ernst & Young LLP

We have served as the Company’s auditor since 2015.
Boston, Massachusetts
March 1, 2022

F-3

Table of Contents

RHYTHM PHARMACEUTICALS, INC.

CONSOLIDATED BALANCE SHEETS

(in thousands, except share and per share data)

Assets
Current assets:

Cash and cash equivalents
Short-term investments
Accounts receivable
Prepaid expenses and other current assets
Total current assets

Property and equipment, net
Right-of-use asset
Intangible assets, net
Restricted cash
Other long-term assets

Total assets

Liabilities and stockholders’ equity
Current liabilities:
Accounts payable
Accrued expenses and other current liabilities
Contract liability
Lease liability
Total current liabilities

Long-term liabilities:
Lease liability

Total liabilities

Commitments and contingencies (Note 10)
Stockholders’ equity:

December 31, 
2021

December 31, 
2020

$

$

$

$

59,248
235,607
1,025
12,507
308,387
2,813
1,522
4,658
328
11,815
$ 329,523

$

5,737
30,084
7,000
606
43,427

1,945
45,372

100,854
71,938
—
8,876
181,668
3,195
1,807
—
403
—
187,073

4,900
12,559
—
535
17,994

2,551
20,545

Preferred Stock, $0.001 par value: 10,000,000 shares authorized; no shares issued and
outstanding at December 31, 2021 and December 31, 2020
Common stock, $0.001 par value: 120,000,000 shares authorized; 50,283,574 and
44,235,903 shares issued and outstanding at December 31, 2021 and December 31, 2020,
respectively
Additional paid-in capital
Accumulated other comprehensive (loss) income
Accumulated deficit
Total stockholders’ equity
Total liabilities and stockholders’ equity

—  

—

50
813,041
(1)
(528,939)
284,151
$ 329,523

$

44
625,762
49
(459,327)
166,528
187,073

The accompanying notes are an integral part of these financial statements

F-4

    
    
 
   
  
 
 
 
 
 
 
 
 
 
 
 
  
 
  
 
  
 
  
 
 
 
 
 
 
 
  
 
  
 
 
 
 
 
  
 
  
 
  
 
  
 
 
 
 
 
 
 
Table of Contents

RHYTHM PHARMACEUTICALS, INC.

CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS

(in thousands, except share and per share data)

Product revenue, net
Costs and expenses:

Cost of sales
Research and development
Selling, general, and administrative
Total costs and expenses

Loss from operations
Other income:

Other income  
Interest income, net
Total other income, net
Net loss
Net loss per share, basic and diluted
Weighted-average common shares outstanding, basic and diluted

Other comprehensive loss:

Net loss
Unrealized (loss) gain on marketable securities

Comprehensive loss

Year Ended
December 31, 
2021

Year Ended
December 31, 
2020

Year Ended
December 31, 
2019

$

3,154

$

— $

—

599
104,128
68,486
173,213
(170,059)

—
90,450
46,125
136,575
(136,575)

—
109,450
36,550
146,000
(146,000)

100,000
447
100,447
(69,612) $
(1.40)
49,600,294

—  

2,579
2,579
(133,996) $
(3.04)
44,127,220

—
5,271
5,271
(140,729)
(3.86)
36,422,450

(69,612) $
(1)
(69,613) $

(133,996) $
49
(133,947) $

(140,729)
144
(140,585)

$

$

$

The accompanying notes are an integral part of these financial statements

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Table of Contents

RHYTHM PHARMACEUTICALS, INC.

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY

(in thousands, except share data)

Balance at December 31, 2018
Stock compensation expense
Issuance of common stock in connection with ESPP
Issuance of common stock in connection with exercise of stock options
Issuance of common stock upon completion of public offering, net of offering
costs
Change in unrealized gain on marketable securities
Net loss

Balance at December 31, 2019
Stock compensation expense
Issuance of common stock in connection with ESPP
Issuance of common stock in connection with exercise of stock options
Change in unrealized gain on marketable securities
Net loss

Balance at December 31, 2020
Stock compensation expense
Issuance of common stock in connection with ESPP
Issuance of common stock in connection with exercise of stock options and
vesting of restricted stock units
Issuance of common stock upon completion of public offering, net of offering
costs
Unrealized loss on marketable securities
Net loss

Balance at December 31, 2021

Common Stock

     Amount     

Shares
34,410,725

—  

25,871
235,833

9,324,324

—  
—
43,996,753

$

—  

30,052
209,098

—  
—
44,235,903

$

—  

38,051

259,620

5,750,000

—  
—  

50,283,574

$

34
—  
—  
1  

9  
—  
—
44
—  
—  
—  
—  
—
44
—  
—

—

6
—  
—  
50

Additional
Paid-In
Capital

430,824

11,875  
558  
1,563  

Accumulated
Other
Comprehensive
     Income (Loss)
—
—
—
—

  $

  $

  $

  $

161,343  
144  
—
606,307

17,455  
522  
1,478  
—  
—
625,762

20,804  
621

4,134

161,720

—  
—  

$

813,041

$

—
—
—
— $
—
—
—
49
—
49 $
—
—

—

—
(50)
—
(1) $

Accumulated
Deficit

Total
Stockholders’
Equity

(184,602)
—  
—  
—  

—  
—  
(140,729)
(325,331)
—  
—  
—  
—  
(133,996)
(459,327)
—  
—

—

  $

  $

—
—  
(69,612) 
(528,939)

$

246,256
11,875
558
1,564

161,352
144
(140,729)
281,020
17,455
522
1,478
49
(133,996)
166,528
20,804
621

4,134

161,726
(50)
(69,612)
284,151

The accompanying notes are an integral part of these financial statements

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RHYTHM PHARMACEUTICALS, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)

Operating activities
Net loss
Adjustments to reconcile net loss to net cash used in operating activities:

Stock-based compensation expense
Gain on sale of priority review voucher
Depreciation and amortization
Non-cash rent expense

Changes in operating assets and liabilities:
Prepaid expenses and other current assets
Other long-term assets
Accounts payable, accrued expenses and other current liabilities

Net cash used in operating activities

Investing activities
Purchases of short-term investments
Maturities of short-term investments
Proceeds from sale of priority review voucher
Proceeds from out-license agreement
Milestone obligation under license agreement
Purchases of property and equipment

Net cash (used in) provided by investing activities

Financing activities
Net proceeds from issuance of common stock
Proceeds from the exercise of stock options
Proceeds from issuance of common stock from ESPP

Net cash provided by financing activities

Net (decrease) increase in cash, cash equivalents and restricted cash
Cash, cash equivalents and restricted cash at beginning of period
Cash, cash equivalents and restricted cash at end of period

Year ended December 31, 
2021

2020

$ (69,612)

$

(133,996)

20,804
(100,000)
1,158
(250)

(4,600)
(11,815)
18,312
(146,003)

(524,972)
361,247
100,000
7,000
(5,000)
(434)
(62,159)

161,726
4,134
621
166,481
(41,681)
101,257
59,576

$

$

17,455
—
690
(234)

551
—
(6,446)
(121,980)

(86,869)
245,614
—
—
—
(214)
158,531

—
1,487
522
2,009
38,560
62,697
101,257

The accompanying notes are an integral part of these financial statements

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Table of Contents

Rhythm Pharmaceuticals, Inc.

Notes to Consolidated Financial Statements

 (In thousands, except share and per share information)

1. Nature of Business

Rhythm  Pharmaceuticals,  Inc.  (the  “Company”  or  “we”)  is  a  global,  commercial-stage  biopharmaceutical
company focused on changing the paradigm for the treatment of rare genetic diseases of obesity, which are characterized
by  early-onset,  severe  obesity  and  hyperphagia,  a  pathological  and  insatiable  hunger.  While  obesity  affects  hundreds  of
millions  of  people  worldwide,  we  are  advancing  IMCIVREE™  (setmelanotide)  as  a  precision  medicine  strategy  for  a
subset  of  individuals  who  have  severe  obesity  due  to  genetic  variants  that  impair  the  melanocortin-4  receptor  (MC4R)
pathway,  a  pathway  in  the  brain  that  is  responsible  for  regulating  hunger,  caloric  intake  and  energy  expenditure,  which
consequently  affect  body  weight.  IMCIVREE,  an  MC4R  agonist  for  which  we  hold  worldwide  rights,  is  the  first-ever
therapy  developed  for  patients  with  certain  ultra-rare  genetic  diseases  of  obesity  that  is  approved  or  authorized  in  the
United States, European Union (EU) or Great Britain. We made IMCIVREE commercially available in the United States
for patients 6 years and older with obesity due to proopiomelanocortin (POMC), proprotein convertase subtilisin/kexin type
1 (PCSK1), or leptin receptor (LEPR) deficiency in early 2021, and we are working to achieve market access in several
European countries in 2022. In addition to initial commercial efforts, we are preparing to bring IMCIVREE to additional
populations  in  2022  and  beyond.  We  are  advancing  a  broad  clinical  development  program  for  setmelanotide  in  patients
with  additional  rare  genetic  diseases  of  obesity  in  an  effort  to  expand  the  approved  indications  in  the  United  States  and
Europe.

              The Company is a Delaware corporation organized in February 2013 under the name Rhythm Metabolic, Inc., and 
as of October 2015, under the name Rhythm Pharmaceuticals, Inc.  The Company has wholly owned subsidiaries in the 
US, Ireland, the United Kindgdom and the Netherlands.

The Company is subject to risks and uncertainties common to late-stage companies in the biotechnology industry,
including  but  not  limited  to,  risks  associated  with  the  commercialization  of  approved  products,  completing  preclinical
studies  and  clinical  trials,  receiving  regulatory  approvals  for  product  candidates,  development  by  competitors  of  new
biopharmaceutical  products,  dependence  on  key  personnel,  protection  of  proprietary  technology,  compliance  with
government  regulations  and  the  ability  to  secure  additional  capital  to  fund  operations.  Commercialization  of  approved
products  will  require  significant  resources  and  in  order  to  market  IMCIVREE,  the  Company  must  continue  to  build  its
sales, marketing, managerial and other non-technical capabilities or make arrangements with third parties to perform these
services.  Product  candidates  currently  under  development  will  require  significant  additional  research  and  development
efforts, including preclinical and clinical testing and regulatory approval, prior to commercialization. These efforts require
significant  amounts  of  additional  capital,  adequate  personnel  and  infrastructure  and  extensive  compliance-reporting
capabilities. Even though the Company has an approved product, and even if the Company’s further product development
efforts are successful, it is uncertain when, if ever, the Company will realize revenue from product sales.

             There are many uncertainties regarding the COVID-19 pandemic, and the Company is closely monitoring the 
impact of the pandemic on all aspects of its business, including how the pandemic will impact its patients, employees, 
suppliers, vendors, business partners and distribution channels. While the pandemic did not materially affect the 
Company's financial results and business operations for the twelve months ended December 31, 2021, the Company is 
unable to predict the impact that COVID-19 will have on its financial position and operating results in future periods due to 
numerous uncertainties. The Company will continue to assess the evolving impact of the COVID-19 pandemic and will 
make adjustments to its operations as necessary.

Liquidity

The  Company  has  incurred  operating  losses  and  negative  cash  flows  from  operations  since  inception.    As  of

December 31, 2021, the Company had an accumulated deficit of $528,939.  The Company has primarily funded these

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losses  through  the  proceeds  from  the  sales  of  common  and  preferred  stock,  asset  sales,  outlicensing  the  rights  to
IMCIVREE  in  certain  markets,    as  well  as  capital  contributions  received  from  the  former  parent  company,  Rhythm
Holdings LLC. To date, the Company has minimal product revenue and management expects operating losses to continue
for  the  foreseeable  future.  The  Company  has  devoted  substantially  all  of  its  resources  to  its  drug  development  efforts,
comprising of research and development, manufacturing, conducting clinical trials for its product candidates, protecting its
intellectual property, pre-commercialization activities and general and administrative functions relating to these operations.
The  future  success  of  the  Company  is  dependent  on  its  ability  to  develop  its  product  candidates  and  ultimately  upon  its
ability to attain profitable operations.

In February 2021, the Company completed the sale of a Rare Pediatric Disease Priority Review Voucher, or PRV,
that it received in connection with the approval of IMCIVREE for $100,000. As the PRV did not have a carrying value, the
gain recognized within Other income (loss) was equal to the gross proceeds received, with costs related to the sale of the
voucher  recorded  within  selling,  general  and  administrative  expenses.    Additionally  in  February  2021,  the  Company
completed a public offering of 5,750,000 shares of common stock at an offering price of $30.00 per share, which included
the exercise in full by the underwriters of their option to purchase up to 750,000 additional shares of common stock. The
Company  received  approximately  $161,550  in  net  proceeds  after  deducting  underwriting  discounts,  commissions  and
  offering  expenses.  The  net  proceeds  from  the  sale  of  the  PRV  Transfer  and  this  offering,  or  the  February  2021  public
offering,  were  approximately  $260,050  after  deducting  underwriting  discounts  and  commissions  and  estimated  offering
expenses.  

             In November 2021, the Company entered into a sales agreement, or the Sales Agreement, with Cowen and 
Company LLC, or Cowen, as sales agent, pursuant to which the Company may, from time to time, issue and sell common 
stock with an aggregate value of up to $100 million in "at-the-market" offerings, or the ATM, under our Registration
Statement on Form S-3 (File No. 333-260689) filed with the SEC on November 2, 2021. Sales of common stock, if any,
pursuant to the Sales Agreement, may be made in sales deemed to be an “at the market offering” as defined in Rule 415(a)
of the Securities Act, including sales made directly through The Nasdaq Global Market or on any other existing trading
market for our common stock. During the year ended December 31, 2021, the Company did not sell any shares of common
stock under the Sales Agreement. As of December 31, 2021, there was $100.0 million of common stock remaining
available for sale under the ATM.

In December 2021, the Company entered into an exclusive License Agreement and a Share Purchase Agreement
(the  “Agreement”)  for  the  development  and  commercialization  of  IMCIVREE  (Setmelanotide)  in  China  with  RareStone
Group Ltd. and  received cash proceeds of $7,000.  

At December 31, 2021, the Company had $294,855 of cash and cash equivalents and short-term investments on
hand.  In the future, the Company will be dependent on obtaining funding from third parties, such as proceeds from the
issuance  of  debt,  sale  of  equity,  proceeds  from  out  license  arrangements,  product  sales  and  funded  research  and
development programs to maintain the Company's operations and meet the Company's obligations. There is no guarantee
that additional equity or other financings will be available to the Company on acceptable terms, or at all. If the Company
fails  to  obtain  additional  funding  when  needed,  the  Company  would  be  forced  to  scale  back,  terminate  its  operations  or
seek to merge with or be acquired by another company. Management believes that the Company's existing cash resources
will be sufficient to fund the Company's operations through at least the next twelve months from the filing of this Annual
Report on Form 10-K with the SEC.  

2. Summary of Significant Accounting Policies

Basis of Presentation

The  Company's  consolidated  financial  statements  have  been  prepared  in  conformity  with  accounting  principles
generally accepted in the United States (“GAAP”). Any reference in these notes to applicable guidance is meant to refer to
the authoritative United States generally accepted accounting principles as found in the Accounting Standards Codification
(“ASC”) and Accounting Standards Updates (“ASU”) of the Financial Accounting Standards Board (“FASB”).

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Dividend Policy

             We have never paid a cash dividend on shares of our stock. We currently do not anticipate paying any cash 
dividends on our stock in the foreseeable future.

Use of Estimates

The  preparation  of  financial  statements  in  conformity  with  GAAP  requires  management  to  make  estimates  and
assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent liabilities at the date
of the financial statements and the reported amounts of revenue and expenses during the reporting period. The Company
bases its estimates on historical experience and other market-specific or other relevant assumptions that it believes to be
reasonable  under  the  circumstances.  This  process  may  result  in  actual  results  differing  materially  from  those  estimated
amounts  used  in  the  preparation  of  the  financial  statements  if  these  results  differ  from  historical  experience,  or  other
assumptions do not turn out to be substantially accurate, even if such assumptions are reasonable when made. Significant
estimates  relied  upon  in  preparing  these  financial  statements  include  accruals  related  to  research  and  development
expenses, assumptions used to record stock-based compensation expense and the valuation allowance on the Company's
deferred  tax  assets.    Estimates  are  periodically  reviewed  in  light  of  changes  in  circumstances,  facts  and  experience.
 Changes in estimates are recorded in the period in which they become known.  Actual results could differ materially from
those estimates.

Principles of Consolidation

The consolidated financial statements include the accounts of Rhythm Pharmaceuticals, Inc. and its wholly-owned

subsidiaries. All significant intercompany balances and transactions have been eliminated in consolidation.

Segment Information

Operating segments are defined as components of an entity about which separate discrete information is available
for evaluation by the chief operating decision maker, or decision-making group, in deciding how to allocate resources and
in  assessing  performance.  The  Company  currently  operates  in  one  business  segment,  which  is  the  development  and
commercialization  of  therapies  for  patients  with  rare  diseases.  A  single  management  team  that  reports  to  the  Chief
Executive Officer comprehensively manages the entire business. The Company does not operate separate lines of business
with respect to its product or product candidates. Accordingly, the Company has one reportable segment.

Off-Balance Sheet Risk and Concentrations of Credit Risk

Financial instruments, which potentially subject the Company to significant concentration of credit risk, consist
primarily of cash and cash equivalents and short-term investments, which are maintained at two federally insured financial
institutions.  The  deposits  held  at  these  two  institutions  are  in  excess  of  federally  insured  limits.  The  Company  has  not
experienced any losses in such accounts and management believes that the Company is not exposed to significant credit
risk due to the financial position of the depository institutions in which those deposits are held. The Company has no off-
balance sheet risk, such as foreign exchange contracts, option contracts, or other foreign hedging arrangements.

              The Company is exposed to risks associated with extending credit to customers related to the sale of products. The 
Company does not require collateral to secure amounts due from its customers. At December 31, 2021, all of the  
Company’s revenue was generated from a single customer in the United States. 

              The Company relies on third-party manufacturers and suppliers for manufacturing and supply of its product. The 
inability of the suppliers or manufacturers to fulfill supply requirements of the Company could materially impact future 
operating results. A change in the relationship with the suppliers or manufacturer, or an adverse change in their business, 
could materially impact future operating results.

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Cash and Cash Equivalents

The Company considers all highly liquid investments with remaining maturity from the date of purchase of three
months or less to be cash equivalents. Cash and cash equivalents includes bank demand deposits, U.S. treasury bills and
money market funds that invest primarily in U.S. government treasuries.

Short-term Investments

Short-term investments consist of investments with maturities greater than 90 days, as of the date of purchase. The
Company has classified its investments with maturities beyond one year as short term, based on their highly liquid nature
and  because  such  marketable  securities  represent  the  investment  of  cash  that  is  available  for  current  operations.  The
Company considers its investment portfolio available-for-sale. Accordingly, these investments are recorded at fair value,
which  is  based  on  quoted  market  prices.  Unrealized  gains  and  losses  are  reported  as  a  component  of  accumulated  other
comprehensive income (loss) in stockholders’ equity.  To the extent the amortized cost basis of the available-for-sale debt
securities exceeds the fair value, management assesses the debt securities for credit loss; however, management considers
the risk of credit loss to be minimized by the Company's policy of investing in financial instruments issued by highly-rated
financial  institutions.  When  assessing  the  risk  of  credit  loss,  management  considers  factors  such  as  the  severity  and  the
reason of the decline in value (i.e., any changes to the rating of the security by a rating agency or other adverse conditions
specifically  related  to  the  security)  and  management's  intended  holding  period  and  time  horizon  for  selling.  During  the
years ended December 31, 2021, 2020, and 2019, the Company did not recognize any credit losses related to its available-
for-sale debt securities. Further, as of December 31, 2021 and 2020, the Company did not record an allowance for credit
losses related to its available-for-sale debt securities.

Restricted Cash

Restricted  cash  consists  of  security  deposits  in  the  form  of  letters  of  credit  placed  in  separate  restricted  bank
accounts as required under the terms of the Company’s lease arrangement for its corporate office in Boston, Massachusetts
and the Company’s corporate travel credit card.

Accounts Receivable, net

              Accounts receivable consists of amounts due from customers, net of customer allowances for cash discounts and
any  estimated  expected  credit  losses.  The  Company's  measurement  of  expected  credit  losses  is  based  on  relevant
information about past events, including historical experience, current conditions, and reasonable and supportable forecasts
that  affect  the  collectability  of  the  reported  amount.  To  date,  the  Company  has  not  experienced  any  credit  losses.  The
Company's  contract  with  its  customer  has  standard  payment  terms  that  generally  require  payment  within  45  days.  The
Company  analyzes  amounts  that  are  past  due  for  collectability,  and  periodically  evaluates  the  creditworthiness  of  its
customer. At December 31, 2021, the Company determined an allowance for doubtful account was not required based upon
our review of contractual payments and our customer circumstances. 

Revenue Recognition

The Company recognizes revenue in accordance with ASC Topic 606, Revenue from Contracts with Customers,
or  ASC  606.  Under  ASC  606,  an  entity  recognizes  revenue  when  its  customer  obtains  control  of  promised  goods  or
services  in  an  amount  that  reflects  the  consideration  which  the  entity  expects  to  receive  in  exchange  for  those  goods  or
services.

Product Revenue, Net

Subsequent to its regulatory approval in the U.S. on November 25, 2020, the Company began to sell IMCIVREE
in the U.S. in March, 2021.  The product is distributed through an exclusive third-party logistics, or 3PL, distribution agent
that  does  not  take  title  to  the  product.    Once  the  product  is  delivered  to  the  Company’s  exclusive  specialty  pharmacy
provider,  our  sole  customer  in  the  U.S.,  the  customer  (or  “wholesaler”)  takes  title  to  the  product.    The  wholesaler  then
distributes the product to health care providers and patients.  In our exclusive distribution agreement with the 3PL

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company, the Company acts as principal because we retain control of the product.  The Company generally does not offer
returns of product sold to the customer.

Revenue from product sales are recognized when the customer obtains control of our product, which occurs at a
point  in  time,  upon  transfer  of  title  to  the  customer  because  at  that  point  in  time  we  have  no  ongoing  obligations  to  the
customer.  There are no other performance obligations besides the sale of product.  We classify payments to our customer
or  other  parties  in  the  distribution  channel  for  services  that  are  distinct  and  priced  at  fair  value  as  selling,  general  and
administrative expenses in our consolidated statements of operations.  Otherwise, payments to a customer or other parties
in  the  distribution  channel  that  do  not  meet  those  criteria  are  classified  as  a  reduction  of  revenue,  as  discussed  further
below.  Taxes collected from the customer relating to product sales and remitted to governmental authorities are excluded
from revenue.  Because our payment terms are generally forty-five days, the Company conclude there is not a significant
financing component because the period between the transfer of a promised good or service to the customer and when the
customer pays for that good or service will be one year or less.  The Company expenses incremental costs of obtaining a
contract as and when incurred since the expected amortization period of the asset that we would have recognized is one
year or less.

Reserves for Variable Consideration

Revenues from product sales are recorded at the net sales price, or the transaction price, which includes estimates
of variable consideration for which reserves are established and which result from discounts, returns, chargebacks, rebates,
co-pay assistance and other allowances that are offered within contracts between us and our customer, health care providers
and other indirect customers relating to the sale of IMCIVREE.  These reserves are based on the amounts earned or to be
claimed  on  the  related  sales  and  are  classified  as  reductions  of  accounts  receivable  (if  the  amount  is  payable  to  the
customer)  or  a  current  liability  (if  the  amount  is  payable  to  a  party  other  than  a  customer).    Where  appropriate,  these
estimates take into consideration a range of possible outcomes that are probability-weighted for relevant factors such as our
historical  experience,  current  contractual  and  statutory  requirements,  specific  known  market  events  and  trends,  industry
data and forecasted customer buying and payment patterns.  Overall, these reserves reflect our best estimates of the amount
of consideration to which we are entitled based on the terms of the contract.  The amount of variable consideration that is
included  in  the  transaction  price  may  be  constrained  and  is  included  in  the  net  sales  price  only  to  the  extent  that  it  is
considered  probable  that  a  significant  reversal  in  the  amount  of  the  cumulative  revenue  recognized  will  not  occur  in  a
future period.  Actual amounts of consideration ultimately received may differ from our estimates.  If actual results in the
future vary from our estimates, we will adjust these estimates, which would affect net product revenue and earnings in the
period such variances become known.

The following are the components of variable consideration related to product revenue:

Chargebacks:  The Company estimates obligations resulting from contractual commitments with the government
and other entities to sell products to qualified healthcare providers and patients at prices lower than the list prices charged
to our customer.  The government and other entities charge us for the difference between what they pay for the product and
the  selling  price  to  our  customer.    The  Company  records  reserves  for  these  chargebacks  related  to  product  sold  to  our
customer during the reporting period, as well as our estimate of product that remains in the distribution channel at the end
of the reporting period that we expect will be sold to qualified healthcare providers and patients in future periods.

Government  rebates:    The  Company  is  subject  to  discount  obligations  under  government  programs,  including
Medicaid programs, Medicare and Tricare in the United States.  We estimate Medicaid, Medicare and Tricare rebates based
upon a range of possible outcomes that are probability-weighted for the estimated payer mix.  These reserves are recorded
in the same period the related revenue is recognized, resulting in a reduction of product revenue and the establishment of a
liability  that  is  included  in  accrued  expenses  on  our  consolidated  balance  sheet.    For  Medicare,  we  also  estimate  the
number of patients in the prescription drug coverage gap for whom we will owe an additional liability under the Medicare
Part D program.  On a quarterly basis, we update our estimates and record any adjustments in the period that we identify
the adjustments.

Trade discounts and allowances:  The Company provides customary invoice discounts on IMCIVREE sales to our

U.S. customer for prompt payment that are recorded as a reduction of revenue in the period the related product revenue

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is  recognized.    In  addition,  we  receive  and  pay  for  various  distribution  services  from  our  customer  in  the  distribution
channel.  For services that are either not distinct from the sale of our product or for which we cannot reasonably estimate
the fair value, such fees are classified as a reduction of product revenue.

Product Returns:  Our customer has limited return rights related to the product’s damage or defect.  The Company
estimates the amount of product sales that may be returned and records the estimate as a reduction of revenue and a refund
liability in the period the related product revenue is recognized.  Based on the distribution model for IMCIVREE and the
price of IMCIVREE, the Company believes there will be minimal returns.

Other  incentives:    Other  incentives  include  co-payment  assistance  the  Company  provides  to  patients  with
commercial  insurance  that  have  coverage  and  reside  in  states  that  allow  co-payment  assistance.    The  calculation  of  the
accrual for co-pay assistance is based on an estimate of claims and the cost per claim that we expect to receive associated
with product that has been recognized as revenue.  The estimate is recorded as a reduction of revenue in the same period
the related revenue is recognized.

For the year ended December 31, 2021, we recorded product revenue, net, of $3,154.  The table that summarizes
balances  and  activity  in  each  of  the  product  revenue  allowance  and  reserve  categories  has  not  been  included  due  to  the
immateriality of the revenue recognized during the period.

Cost of Product Sales

Prior  to  receiving  approval  from  the  FDA  in  November  2020  to  sell  IMCIVREE  in  the  United  States,  the
Company  expensed  all  costs  incurred  related  to  the  manufacture  of  IMCIVREE  as  research  and  development  expense
because  of  the  inherent  risks  associated  with  the  development  of  a  drug  candidate,  the  uncertainty  about  the  regulatory
approval  process  and  the  lack  of  history  for  the  Company  of  regulatory  approval  of  drug  candidates.    Subsequent  to
receiving FDA approval in November 2020, the Company has capitalized a nominal amount of inventory related costs that
were  incurred  subsequent  to  FDA  approval.  At  December  31,  2021,  the  Company  had  $111  of  inventory  recorded  as  a
component of other current assets on the consolidated balance sheet.

Intangible Assets, net

Definite-lived  intangible  assets  related  to  capitalized  milestones  under  license  agreements  are  amortized  on  a
straight-line basis over their remaining useful lives, which are estimated to be the remaining patent life. If our estimate of
the  product’s  useful  life  is  shorter  than  the  remaining  patent  life,  then  a  shorter  period  is  used.  Amortization  expense  is
recorded as a component of cost of sales on the consolidated statements of operations and comprehensive loss.

Impairment of Long-Lived Assets

The Company evaluates its long-lived assets, which consist primarily of property and equipment and finite lived
intangible assets, for impairment whenever events or changes in circumstances indicate that the carrying amount of such
assets  may  not  be  recoverable.  Factors  that  the  Company  considers  in  deciding  when  to  perform  an  impairment  review
include significant underperformance of the business in relation to expectations, significant negative industry or economic
trends and significant changes or planned changes in the use of the assets. The Company measures recoverability of assets
to be held and used by a comparison of the carrying amount of an asset to the future undiscounted net cash flows expected
to  be  generated  by  the  asset.  If  such  assets  are  considered  to  be  impaired,  the  Company  measures  the  impairment  to  be
recognized by the amount by which the carrying amount of the asset exceeds the fair value of the asset, less the cost to sell.
 No events or changes in circumstances existed to require an impairment assessment during the years ended December 31,
2021, 2020 and 2019.

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Prepaid Expenses and Other Current Assets

Prepaid  expenses  and  other  current  assets  consist  primarily  of  costs  incurred  in  advance  of  services  being
received,  including  services  related  to  clinical  trial  programs.    Prepaid  expenses  and  other  current  assets  consists  of  the
following:

Prepaid research and development costs
Other current assets

Prepaid expenses and other current assets

Property and Equipment

Property and equipment consists of the following:

Leasehold improvements
Office equipment
Computers and software
Furniture, fixtures and equipment

Less accumulated depreciation and amortization
Property and equipment, net

* Shorter of asset life or lease term.

December 31, 

2021

2020

$

$

8,404
4,103
12,507

$

$

5,828
3,048
8,876

Useful 
Life
*
5 years
3 years
5 years

December 31, 

2021

2020

$

$

2,705
107
1,010
1,249
5,071
(2,258)
2,813

$

$

2,705
70
625
1,237
4,637
(1,442)
3,195

Depreciation and amortization expense related to property and equipment for the years ended December 31, 2021,

2020 and 2019 was $816, $690, and $834, respectively.

Property and equipment are recorded at cost. Depreciation and amortization is calculated using the straight-line
method over the estimated useful lives of the assets. Upon disposal, retirement or sale, the cost of assets disposed of and
the related accumulated depreciation are removed from the accounts and any resulting gain or loss is included in the results
of operations. Expenditures for repairs and maintenance that do not improve or extend the lives of the respective assets are
charged to expense as incurred.

Fair Value Measurements

Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction 
between market participants at the measurement date.  Financial assets and liabilities carried at fair value are classified and 
disclosed in one of the following three categories:

Level 1 — Quoted market prices in active markets for identical assets or liabilities.

Level 2 — Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities;

quoted prices in markets that are not active; or other inputs that are observable or can be corroborated
by observable market data for substantially the full term of the assets or liabilities.

Level 3 — Unobservable inputs that are supported by little or no market activity and that are significant to the fair

value of the assets or liabilities.

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The Company’s cash equivalents and marketable securities at December 31, 2021 and 2020 were carried at fair

value, determined according to the fair value hierarchy.  See Note 4 for further discussion.

The  carrying  amounts  reflected  in  the  consolidated  balance  sheets  for  accounts  payable  and  accrued  expenses

approximate their fair values due to their short-term maturities at December 31, 2021 and 2020, respectively.

Research and Development Expenses

Costs incurred in the research and development of the Company’s products are expensed to operations as incurred.
Research and development expenses consist of costs incurred in performing research and development activities, including
salaries  and  benefits,  facilities  costs,  overhead  costs,  contract  services  and  other  outside  costs.  The  value  of  goods  and
services received from contract research organizations, or CROs, or contract manufacturing organizations, or CMOs, in the
reporting period are estimated based on the level of services performed and progress in the period for which the Company
has not yet received an invoice from the supplier.  When evaluating the adequacy of the accrued liabilities, the Company
analyzes  progress  of  the  studies  or  clinical  trials,  including  the  phase  or  completion  of  events,  invoices  received  and
contracted  costs.  Significant  judgments  and  estimates  are  made  in  determining  the  accrued  balances  at  the  end  of  any
reporting  period.  Actual  results  could  differ  from  the  Company’s  estimates.  The  Company’s  historical  accrual  estimates
have not been materially different from the actual costs.

Nonrefundable  advance  payments  for  goods  or  services  to  be  received  in  the  future  for  use  in  research  and
development activities are recorded as prepaid expenses, and expensed as the related goods are delivered or the services are
performed.

Income Taxes

The  Company  is  taxed  as  a  C  corporation  for  federal  income  tax  purposes.  Income  taxes  for  the  Company  are
recorded in accordance with FASB ASC Topic 740, Income Taxes (“ASC 740”), which provides for deferred taxes using an
asset and liability approach. Income taxes have been calculated on a separate tax return basis.

The Company accounts for income taxes under the asset and liability method, which requires the recognition of
deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial
statements. Under this method, the Company determines deferred tax assets and liabilities on the basis of the differences
between the financial statement and tax bases of assets and liabilities by using enacted tax rates in effect for the year in
which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and liabilities is
recognized in income in the period that includes the enactment date.  The Company recognizes deferred tax assets to the
extent  that  it  believes  that  these  assets  are  more  likely  than  not  to  be  realized.  In  making  such  a  determination,  the
Company considers all available positive and negative evidence, including future reversals of existing taxable temporary
differences,  projected  future  taxable  income,  tax-planning  strategies,  and  results  of  recent  operations.  If  the  Company
determines that it would be able to realize its deferred tax assets in the future in excess of their net recorded amount, it
would  make  an  adjustment  to  the  deferred  tax  asset  valuation  allowance,  which  would  reduce  the  provision  for  income
taxes.

The Company records uncertain tax positions in accordance with ASC 740 on the basis of a two-step process in
which  (1)  it  determines  whether  it  is  more  likely  than  not  that  the  tax  positions  will  be  sustained  on  the  basis  of  the
technical merits of the position and (2) for those tax positions that meet the more-likely-than-not recognition threshold, the
Company recognizes the largest amount of tax benefit that is more than 50% likely to be realized upon ultimate settlement
with the related tax authority.

The  Company  recognizes  interest  and  penalties  related  to  unrecognized  tax  benefits  on  the  income  tax  expense
line in the accompanying consolidated statements of operations. As of December 31, 2021 and 2020, no accrued interest or
penalties are included on the related tax liability line in the consolidated balance sheets.

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Net Loss Per Share

Basic  net  loss  per  share  is  computed  by  dividing  net  loss  by  the  weighted-average  number  of  common  shares
outstanding during the period, without consideration of potential dilutive securities. Diluted net loss per share is computed
by  adjusting  the  weighted-average  shares  outstanding  for  the  potential  dilutive  effects  of  common  stock  equivalents
outstanding during the period calculated in accordance with the treasury stock method. For purposes of the diluted net loss
per share calculation, stock options, restricted stock units and performance stock units are considered to be common stock
equivalents but have been excluded from the calculation of diluted net loss per share, as their effect would be anti-dilutive
for all periods presented. Therefore, basic and diluted net loss per share were the same for all periods presented.

The following table includes the potential common shares, presented based on amounts outstanding at each period
end, that were excluded from the computation of diluted net loss per share due to their anti-dilutive effect, for the periods
indicated:

Stock options
Restricted stock units
Performance stock units

Potential common shares

Comprehensive Loss

2021
5,737,599
435,589
956,145
7,129,333

Year Ended
December 31, 
2020
5,199,235
176,537
—
5,375,772

2019

3,428,497
—
—
3,428,497

Comprehensive  loss  represents  the  net  change  in  stockholders’  equity  during  a  period  from  sources  other  than
transactions with shareholders. As reflected in the accompanying consolidated statements of operations and comprehensive
loss,  our  comprehensive  loss  is  comprised  of  net  losses  and  unrealized  gains  and  losses  on  marketable  debt  securities.
 These changes in equity are reflected net of tax.

Patent Costs

Costs  to  secure  and  defend  patents  are  expensed  as  incurred  and  are  classified  as  general  and  administrative

expenses. Patent costs were $332, $524 and $472 for the years ended December 31, 2021, 2020 and 2019, respectively.

Subsequent Events

The Company considers events or transactions that occur after the balance sheet date but prior to the issuance of
the financial statements to provide additional evidence for certain estimates or to identify matters that require additional
disclosure. Subsequent events have been evaluated as required.  See Note 14.

Application of New or Revised Accounting Standards

From time to time, new accounting pronouncements are issued by the FASB and adopted by the Company as of
the specified effective date. Unless otherwise discussed, the Company believes that the impact of recently issued standards
that are not yet effective will not have a material impact on its financial position or results of operations upon adoption.

In June 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses-Measurement of Credit Losses
on Financial Instruments, which has been subsequently amended by ASU No. 2018-19, ASU No. 2019-04, ASU No. 2019-
05, ASU No. 2019-10, ASU No. 2019-11 and ASU No. 2020-03, or ASU 2016-13. The provisions of ASU 2016-13 modify
the impairment model to utilize an expected loss methodology in place of the currently used incurred loss methodology and
require a consideration of a broader range of reasonable and supportable information to inform credit loss estimates. Since
the  Company  ceased  to  be  an  emerging  growth  company  as  of  December  31,  2020,  the  Company  adopted  the  standard
during the fourth quarter of 2020 and applied the modified retrospective method of adoption to the Company’s financial
statements as of January 1, 2020.  Based on the composition of the investment portfolio as of

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the adoption date, the adoption of this standard did not have a material impact on the Company’s financial position, results
of operations and cash flows for the year ended December 31 2020 and no adjustment was required to be recorded to the
opening retained earnings balance as of January 1, 2020.

In December 2019, the FASB issued ASU 2019-12, Income Taxes-Simplifying the Accounting for Income Taxes,
or  ASU  2019-12.  ASU  2019-12  eliminates  certain  exceptions  related  to  the  approach  for  intraperiod  tax  allocation,  the
methodology  for  calculating  income  taxes  in  an  interim  period  and  the  recognition  of  deferred  tax  liabilities  for  outside
basis differences. The new guidance also simplifies aspects of the accounting for franchise taxes and enacted changes in tax
laws or rates and clarifies the accounting for transactions that result in a step-up in the tax basis of goodwill. The standard
is  effective  for  annual  periods  beginning  after  December  15,  2020  and  interim  periods  within,  with  early  adoption
permitted.  Adoption  of  the  standard  requires  certain  changes  to  be  made  prospectively,  with  some  changes  to  be  made
retrospectively.  We  have  adopted  ASU  2019-12  as  of  January  1,  2021  and  the  adoption  of  this  standard  did  not  have  a
material impact on the Company’s financial position, results of operations and cash flows.

3. Accrued Expenses

Accrued expenses consists of the following:

Research and development costs
Professional fees
Payroll related
Other

Accrued expenses

4. Fair Value of Financial Assets

December 31, 
2021

December 31, 
2020

$

$

17,480
2,163
8,371
2,070
30,084

$

$

5,815
648
5,916
180
12,559

As of December 31, 2021 and 2020, the carrying amount of cash and cash equivalents and short-term investments
was  $294,855  and  $172,792,  respectively,  which  approximates  fair  value.  Cash  and  cash  equivalents  and  short-term
investments  includes  investments  in  U.S.  treasury  securities  and  money  market  funds  that  invest  in  U.S.  government
securities  that  are  valued  using  quoted  market  prices.  Accordingly,  money  market  funds  and  government  funds  are
categorized  as  Level  1.    The  financial  assets  valued  based  on  Level  2  inputs  consist  of  corporate  debt  securities  and
commercial paper, which consist of investments in highly-rated investment-grade corporations.

The  following  tables  present  information  about  the  Company's  financial  assets  measured  at  fair  value  on  a

recurring basis and indicate the level of the fair value hierarchy utilized to determine such fair values:

Assets:
Cash Equivalents:

Commercial Paper
Money Market Funds
Marketable Securities:

Corporate Debt Securities and Commercial Paper

Total

Level 1

Fair value Measurements as of
December 31, 2021 using:
Level 3
Level 2

Total

— $

48,297

— $
—

— $
—

—
48,297

—
48,297

235,607
235,607

$

$

—
— $

235,607
283,904

$

$

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Assets:
Cash Equivalents:

Corporate Debt Securities and Commercial Paper
Money Market Funds
Marketable Securities:

Corporate Debt Securities and Commercial Paper

Total

Marketable Securities

Level 1

Fair value Measurements as of
December 31, 2020 using:
Level 3
Level 2

Total

$

$

— $

63,182

36,242

$
—  

— $
—  

36,242
63,182

—
63,182

71,938
108,180

$

$

—
— $

71,938
171,362

The following tables summarize the Company's marketable securities:

Assets

Corporate debt securities and commercial paper (due within
1 year)

Assets

Corporate debt securities and commercial paper (due within
1 year)

5. Right Of Use Asset and Lease Liability

Amortized
Cost

December 31, 2021

Gross
Unrealized
Gains

Gross
Unrealized
Losses

Fair
Value

$ 235,608
$ 235,608

$
$

50
50

$
$

(51)
(51)

$
$

235,607
235,607

Amortized
Cost

December 31, 2020

Gross
Unrealized
Gains

Gross
Unrealized
Losses

Fair
Value

$
$

71,895
71,895

$
$

43
43

$
$

— $
— $

71,938
71,938

The Company has a material operating lease for its head office facility and other immaterial operating leases for
certain equipment.  The Company’s office lease has a remaining lease term of 3.6 years.  The Company measured the lease
liability associated with the office lease using a discount rate of 10% at inception.  The Company estimated the incremental
borrowing rate for the leased asset based on a range of comparable interest rates the Company would incur to borrow an
amount equal to the lease payments on a collateralized basis over a similar term in a similar economic environment.  As of
December 31, 2021, the Company has not entered into any lease arrangements classified as a finance lease.

Under  FASB  ASC  Topic  842,  Leases,  the  Company  determines,  at  the  inception  of  the  contract,  whether  the
contract  is  or  contains  a  lease  based  on  whether  the  contract  provides  the  Company  the  right  to  control  the  use  of  a
physically distinct asset or substantially all of the capacity of an asset. Leases with an initial noncancelable term of twelve
months  or  less  that  do  not  include  an  option  to  purchase  the  underlying  asset  that  the  Company  is  reasonably  certain  to
exercise  are  classified  as  short-term  leases.    The  Company  has  elected  as  an  accounting  policy  to  exclude  from  the
consolidated balance sheets a right of use asset and lease liability for short-term leases.

Upon  adoption  of  ASC  842,  the  Company  elected  the  transition  relief  package,  permitted  within  the  standard,
pursuant  to  which  the  Company  did  not  reassess  the  classification  of  existing  leases,  whether  any  expired  or  existing
contracts contain a lease, and whether existing leases have any initial direct costs. The Company also elected the practical
expedient of not separating lease components from non-lease components for all leases. There was no cumulative-effective
adjustment to the opening balance of retained earnings. The Company reviews all material contracts for embedded leases to
determine if they have a right-of-use asset.

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The Company recognizes rent expense on a straight-line basis over the lease period. The depreciable life of assets
and  leasehold  improvement  are  limited  by  the  expected  lease  term,  unless  there  is  a  transfer  of  title  or  purchase  option
reasonably certain of exercise.

As a result of the adoption of ASC 842 on January 1, 2019, the Company recorded both an operating lease right-
of-use asset of $3,265 and a lease liability of $3,636. The standard did not materially impact the consolidated statements of
cash flows and had no impact on the consolidated statements of operations.

The Company’s office lease includes both lease and non-lease components.  Non-lease components relate to real
estate  taxes,  insurance,  operating  expenses  and  common  area  maintenance,  which  are  usually  billed  at  actual  amounts
incurred proportionate to the Company’s rented square feet of the building.  These non-lease components are expensed by
the Company as they are incurred and are not included in the measurement of the lease liability.

The Company’s corporate headquarters is located in Boston, Massachusetts.  This facility houses the Company’s
research,  clinical,  regulatory,  commercial  and  administrative  personnel.    The  Company’s  lease  agreement  commenced
May  2019  and  has  a  term  of  six  years  with  a  five-year  renewal  option  to  extend  the  lease.  As  of  January  1,  2019,  the
Company did not included the five-year renewal option to extend the lease in its measurement of the ROU asset or lease
liability. Rent expense, or operating lease costs, for the years ended December 31,  2021, 2020 and 2019 were $551, $551
and $629, respectively.

Supplemental cash flow information related to the Company’s lease for the years ended December 31, 2021 and

2020, includes cash payments of $802 and $786, respectively used in the measurement of its operating lease liability.

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The following table presents the maturities of the Company’s operating lease liability related to office space as of

December 31, 2021, all of which is under a non-cancellable operating lease:

2022
2023
2024
2025
Thereafter
Total operating lease payments

Less: imputed interest

Total operating lease liability

6. Intangible Assets, Net

$

     Operating Lease
818
834
851
502
—
3,005
454
2,551

$

As of December 31, 2021, the Company’s definite-lived intangible assets, which totaled $4,658, resulted from the
capitalization of certain milestone payments made to Ipsen Pharma, S.A.S., or Ipsen, in accordance with the terms of the
Company’s license agreement with Ipsen, in connection with the Company’s first commercial sale of IMCIVREE in the
U.S. in March 2021.

As of December 31, 2021, amortization expense for the next five years and beyond is summarized as follows:

2022
2023
2024
2025
2026
Thereafter
Total

$

$

455
455
455
455
455
2,383
4,658

            The Company began amortizing its finite-lived intangible assets in April 2021 over an 11 year period based on 
IMCIVREE’s expected patent exclusivity period. Amortization expense totaled $342 for the year ended 
December 31, 2021.  Amortization expense is recorded as a component of cost of sales on the consolidated statements of 
operations and comprehensive loss.  

7. Common Stock

Common Stock

On  February  9,  2021  the  Company  completed  a  public  offering  of  5,750,000  shares  of  common  stock  at  an
offering price of $30.00 per share, which included the exercise in full by the underwriters of their option to purchase up to
750,000  additional  shares  of  common  stock.  The  Company  received  approximately  $161,550  in  net  proceeds  after
deducting underwriting discounts, commissions and estimated offering expenses.

On  October  18,  2019  the  Company  completed  a  public  offering  of  9,324,324  shares  of  common  stock  at  an
offering price of $18.50 per share, which included the exercise in full by the underwriters of their option to purchase up
to  1,216,216  additional  shares  of  common  stock.  The  Company  received  net  proceeds  of  $161,352  after  deducting
underwriting discounts, commissions and offering expenses.

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8. Stock-based Compensation

2017 Equity Incentive Plan

The  Rhythm  Pharmaceuticals,  Inc.  2017  Equity  Incentive  Plan  (the  “2017  Pan”)    provides  for  the  grant  of
incentive  and  non-qualified  stock  options,  stock  appreciation  rights,  performance  units,  restricted  stock,  restricted  stock
units and stock grants to employees, consultants, advisors and directors of us or our affiliates, as determined by the board
of  directors.    The  number  of  shares  authorized  under  the  2017  Plan  will  be  increased  each  January  1,  commencing  on
January 1, 2018 and ending on (and including) January 1, 2027, by an amount equal to 4% of the outstanding shares of
stock outstanding as of the end of the immediately preceding fiscal year. On January 1, 2022, 2021 and 2020, 2,011,343,
1,769,436 and 1,759,870 shares, respectively, were added to the 2017 Plan.  Notwithstanding the foregoing, the board of
directors may act prior to January 1 for a given year to provide that there will be no such January 1 increase in the number
of shares authorized under the 2017 Plan for such year, or that the increase in the number of shares authorized under the
2017 Plan for such year will be a lesser number than would otherwise occur pursuant to the preceding sentence.  Shares of
common stock issued upon exercise of stock options are generally issued from new shares of the Company. The 2017 Plan
provides that the exercise price of incentive stock options cannot be less than 100% of the fair market value of the common
stock on the date of the award for participants who own less than 10% of the total combined voting power of stock of the
Company,  and  not  less  than  110%  for  participants  who  own  more  than  10%  of  the  Company's  voting  power.  Awards
granted under the 2017 Plan will vest over periods as determined by the Company's board of directors. For options granted
to date, the exercise price equaled the fair value of the common stock as determined by the board of directors on the date of
grant.

As of December 31, 2021, an aggregate of 8,994,352 shares of common stock were authorized for issuance under
the  2017  Plan,  of  which  a  total  of  approximately  1,865,019  shares  of  common  stock  remained  available  for  future
awards.  In  addition,  a  total  of  7,129,333  shares  of  common  stock  reserved  for  issuance  were  subject  to  currently
outstanding stock options, performance share units and restricted stock units granted under the Plan.

The Company estimates the fair value of stock option awards to employees and non-employees using the Black-
Scholes option-pricing model, which requires the input of subjective assumptions, including (a) the expected volatility of
the underlying common stock, (b) the expected term of the award, (c) the risk-free interest rate, and (d) expected dividends.
Due  to  the  lack  of  a  public  market  for  the  trading  of  its  common  stock  and  a  lack  of  company-specific  historical  and
implied volatility data, the Company has based its estimate of expected volatility on the historical volatility of a group of
companies in the pharmaceutical and biotechnology industries in a similar stage of development as the Company that are
publicly traded. For these analyses, the Company selected companies with comparable characteristics to its own including
enterprise value, risk profiles and with historical share price information sufficient to meet the expected life of the stock-
based  awards.    The  Company  computes  the  historical  volatility  data  using  the  daily  closing  prices  for  the  selected
companies' shares during the equivalent period of the calculated expected term of its stock-based awards. During 2020, the
Company began to estimate its volatility by using a blend of its stock price history for the length of time it has market data
for its stock and the historical volatility of similar public companies for the expected term of each grant.  The Company
will  continue  to  apply  this  process  until  a  sufficient  amount  of  historical  information  regarding  the  volatility  of  its  own
stock price becomes available.

The Company estimated the expected life of its employee stock options using the “simplified” method, whereby,
the  expected  life  equals  the  average  of  the  vesting  term  and  the  original  contractual  term  of  the  option.  The  risk-free
interest rates for periods within the expected life of the option are based on the U.S. Treasury yield curve in effect during
the period the options were granted.  We have elected to account for forfeitures as they occur.

The grant date fair value of awards subject to service-based vesting is recognized ratably over the requisite service
period, which is generally the vesting period of the respective awards. The Company's stock option awards typically vest
over  a  service  period  that  ranges  from  one  to  four  years  and  includes  awards  with  one  year  cliff  vesting  followed  by
ratable monthly and quarterly vesting thereafter and ratable monthly and quarterly vesting beginning on the grant date.

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During  the  years  ended  December  31,  2021,  2020  and  2019,  the  Company  granted  1,678,230,  2,546,075  and
1,445,200 stock option awards to certain directors, employees and non-employees, respectively.  Using the Black-Scholes
option  pricing  model,  the  weighted-average  grant  date  fair  value  relating  to  outstanding  stock  options  granted  under  the
Company’s stock option plan during the years ended December 31, 2021, 2020 and 2019 was $15.69, $13.25 and $17.19,
respectively. The total intrinsic value of stock options exercised during the years ended December 31, 2021, 2020 and 2019
was $2,688, $2,661 and $3,844, respectively.

The fair value of stock options granted to employees and directors was estimated at the date of grant using the

Black-Scholes option pricing model with the following weighted-average assumptions:

Risk‑free interest rate
Expected term (in years)
Expected volatility
Expected dividend yield

Year ended
December 31, 

2020

0.76 %
6.08
70.67 %
—

2021

0.79 %
6.11
69.80 %
—

2019

2.40 %
6.07
66.03 %
—

A summary of the Company's stock option activity for the year ended December 31, 2021 is as follows:

Outstanding as of December 31, 2020

Granted
Exercised
Cancelled

Outstanding as of December 31, 2021
Options exercisable at December 31, 2021

Number of
Options
5,199,235
1,678,230
(232,037)
(907,829)
5,737,599
2,861,174

$

$
$

Weighted-
Average
Exercise
Price

     Weighted‑
Average
Remaining
Contractual
Term

21.30
25.24
17.81
26.04
21.84
20.24

7.57

$
—  
—  
—  
$
$

6.73
5.09

Aggregate
Intrinsic
Value
45,233
—
2,688
—
3,214
3,178

               The Company may grant Restricted Stock Units (RSUs) to employees and nonemployee directors. Each RSU 
represents a right to receive one share of the Company's common stock upon the completion of a specific period of
continued service. RSU awards granted are valued at the market price of the Company's common stock on the date of
grant. The Company recognizes stock-based compensation expense for the fair values of these RSUs on a straight-line
basis over the requisite service period of these awards.

A summary of the Company's restricted stock unit activity for the year ended December 31, 2021 is as follows:

Unvested as of December 31, 2020

Granted
Vested
Cancelled

Unvested as of December 31, 2021

F-22

Number of
RSUs

176,537
403,465
(27,583)
(116,830)
435,589

$

$

Weighted-
Average
Grant Date
Fair Value

19.50
21.97
17.87
24.67
15.74

 
 
 
    
    
    
 
 
 
 
 
 
 
 
 
 
 
 
 
    
    
 
 
 
 
 
 
 
 
Table of Contents

As of December 31, 2021, the aggregate intrinsic value of non-vested RSUs was $4,347.

              In November 2021, the Company granted up to a maximum of 956,145 Performance Stock Units (PSUs) to 
employees.  Each PSU represents a right to receive one share of the Company's common stock upon vesting.  The 
performance-based stock units granted in 2021 will vest on December 31, 2023 based upon i) continued service and ii) the 
achievement of specific clinical development and regulatory performance events, as approved by the compensation 
committee.  PSU awards granted are valued at the market price of the Company's common stock on the date of grant. The 
Company recognizes stock-based compensation expense for the fair value of these PSUs for the awards that are probable of 
vesting over the service period.  During each financial period, management estimates the probable number of PSU’s that 
would vest until the ultimate achievement of the performance goal is known.  At December 31, 2021, the Company 
estimates that 51.6% of  the PSUs granted in November 2021 will be eligible to vest.

A summary of the Company's performance stock unit activity for the year ended December 31, 2021 is as follows:

Unvested as of December 31, 2020

Granted
Vested
Cancelled

Unvested as of December 31, 2021

Number of
PSUs

— $

956,145

—  
—  
$

956,145

Weighted-
Average
Grant Date
Fair Value

—
13.24
—
—
13.24

The following table summarizes the classification of the Company's stock-based compensation expenses related to
stock  options,  restricted  stock  units  and  the  employee  stock  purchase  plan  recognized  in  the  Company's  consolidated
statements of operations and comprehensive loss.

Research and development
Selling, general, and administrative

Total

Year Ended
December 31, 
2020
$
6,055
  11,400
$ 17,455

$

2019
5,163
6,712
$ 11,875

2021
$ 7,687
  13,117
$ 20,804

Stock-based compensation expense by award type recognized during the years ended December 31, 2021, 2020

and 2019 was as follows:

Stock options
Employees stock purchase plan
Restricted stock units
Performance stock units

Total

Year Ended
December 31, 
2020
$ 15,915
180
1,360
—
$ 17,455

2019
$ 11,667
208
—
—
$ 11,875

2021
$ 17,988
310
1,924
582
$ 20,804

During  2021,  2020  and  2019,  there  were  certain  awards  subject  to  modification  accounting.  Per  terms  of
separation with a former employee, the employee’s stock option awards were amended to provide for accelerated vesting
and  extended  time  to  exercise  vested  options.   As  a  result,  the  Company  recognized  incremental  expense  for  the  stock
option awards of $141, $2,880 and $56, respectively.

F-23

    
    
 
 
 
 
 
 
    
 
    
 
 
 
Table of Contents

As  of  December  31,  2021,  the  Company  has  unrecognized  compensation  cost  of  $35,694  related  to  non-vested
employee,  non-employee  and  director  stock  option  awards  that  is  expected  to  be  recognized  over  a  weighted-average
period  of  2.57  years.    The  Company  has  unrecognized  compensation  cost  of  $14,838  related  to  non-vested  employee
restricted stock unit and performance stock unit awards that is expected to be recognized over a weighted-average period of
2.30 years.

2017 Employee Stock Purchase Plan

The  Company  has  a  2017  Employee  Stock  Purchase  Plan,  or  the  2017  ESPP,  which  became  effective  in
connection  with  the  completion  of  the  Company’s  IPO  in  October  2017.   As  of  December  31,  2021,  a  total  of  962,942
shares  of  common  stock  were  reserved  for  issuance  under  the  2017  ESPP.  In  addition,  the  number  of  shares  authorized
under the 2017 ESPP will be increased each January 1, commencing on January 1, 2019 and ending on (and including)
January 1, 2027, by an amount equal to the lesser of 1% of outstanding shares as of the end of the immediately preceding
fiscal year. On January 1, 2021, 2020 and 2019, zero, 439,968 and 344,107 shares, respectively, were added to the 2017
ESPP.    Notwithstanding  the  foregoing,  the  board  of  directors  may  act  prior  to  January  1  of  a  given  year  to  provide  that
there will be no such January 1 increase in the number of shares authorized under the 2017 ESPP for such year, or that the
increase  in  the  number  of  shares  authorized  under  the  2017  ESPP  for  such  year  will  be  a  lesser  number  than  would
otherwise occur pursuant to the preceding sentence.  The board of directors elected not to increase the pool on January 1,
2021.  During the year ended December 31, 2021, 38,051 shares were issued under this plan.

The purchase price of common stock under our ESPP is equal to 85.0% of the lower of (i) the market value per
share of the common stock on the first business day of an offering period or (ii) the market value per share of the common
stock on the purchase date. The fair value of the discounted purchases made under our ESPP is calculated using the Black-
Scholes model. The fair value of the look-back provision plus the 15.0% discount is recognized as compensation expense
over the 6 month purchase period.

9. Significant Agreements

License Agreements

RareStone Group Ltd. 

In December 2021, the Company entered into an Exclusive License Agreement with RareStone Group Ltd., or the
RareStone  License.  Pursuant  to  the  RareStone  License,  we  granted  to  RareStone  an  exclusive,  sublicensable,  royalty-
bearing license under certain patent rights and know-how to develop, manufacture, commercialize and otherwise exploit
any pharmaceutical product that contains setmelanotide in the diagnosis, treatment or prevention of conditions and diseases
in humans in China, including mainland China, Hong Kong and Macao. RareStone has a right of first negotiation in the
event  that  the  Company  chooses  to  grant  a  license  to  develop  or  commercialize  the  licensed  product  in  Taiwan.  The
arrangement includes a license and an additional performance obligation to supply product upon the request of RareStone.

 According to the terms of the RareStone License, RareStone has agreed to seek local approvals to commercialize
IMCIVREE  for  the  treatment  of  obesity  and  hyperphagia  due  to  biallelic  proopiomelanocortin  (POMC),  proprotein
convertase  subtilisin/kexin  type  1  (PCSK1)  or  leptin  receptor  (LEPR)  deficiency,  as  well  as  Bardet-Biedl  and  Alström
syndromes. Additionally, RareStone has agreed to fund efforts to identify and enroll patients from China in the Company’s
global  EMANATE  trial,  a  Phase  3,  randomized,  double-blind,  placebo-controlled  trial  to  evaluate  setmelanotide  in  five
independent sub-studies in patients with obesity due to a heterozygous variant of POMC/PCSK1 or LEPR; certain variants
of the SRC1 gene, certain variants of the SH2B1 gene, or PCSK1 N221D deletions within the MC4R pathway. According
to the terms of the RareStone License, RareStone  made  an  upfront  payment  to  Rhythm  of  $7,000 and issued $5,000    in
equity  to  the  Company.  Rhythm  will  be  eligible  to  receive  development  and  commercialization  milestones  of  up  to
$62,500, as well as tiered royalty payments on annual net sales of IMCIVREE. As of December 31, 2021, the Company
received the upfront payment of $7,000, however the Company has not fulfilled its obligations related to the transfer of
know how related to the license, and as such, the upfront payment was recorded as a contract liability on the consolidated
balance sheet as of December 31, 2021.  The $5,000 of RareStone equity was issued to Rhythm subsequent to December
31, 2021.  

F-24

 
 
Table of Contents

Ipsen Pharma S.A.S.

                            Pursuant  to  a  license  agreement  with  Ipsen  Pharma,  S.A.S.,  or  Ipsen,  the  Company  has  an  exclusive,
sublicensable,  worldwide  license  to  certain  patents  and  other  intellectual  property  rights  to  research,  develop,  and
commercialize compounds that were discovered or researched by Ipsen in the course of conducting its MC4R program or
that  otherwise  were  covered  by  the  licensed  patents.  Under  the  terms  of  the  setmelanotide  Ipsen  license  agreement,
assuming  that  setmelanotide  is  successfully  developed,  receives  regulatory  approval  and  is  commercialized,  Ipsen  may
receive aggregate payments of up to $40,000 upon the achievement of certain development and commercial milestones and
royalties on future product sales in the mid-single digits. Substantially all of such aggregate payments of up to $40,000 are
for milestones that may be achieved no earlier than first commercial sale of setmelanotide. In the event that the Company
executes  a  sublicense  agreement,  it  shall  make  payments  to  Ipsen,  depending  on  the  date  of  such  sublicense  agreement,
ranging from 10% to 20% of all revenues actually received under such sublicense agreement.

The Company capitalized a $5,000 commercial milestone as a finite-lived intangible asset, as a result of the first
commercial sale of IMCIVREE in the U.S. during March 2021. The Company recorded milestone expenses related to this
license  agreement  of  $3,000  during  the  year  ended  December  31,  2020.  The  expenses  were  recorded  as  research  and
development expenses when the milestone criteria were met in full during 2020.  There are no research and development
expenses related to milestones recorded in 2021 or 2019.

Camurus

In  January  2016,  the  Company  entered  into  a  license  agreement  with  Camurus  AB,  or  Camurus,  for  the  use  of
Camurus' drug delivery technology. The contract includes a non-refundable and non-creditable signing fee of $500. The
Camurus  agreement  also  includes  up  to  $7,750  in  one-time,  non-refundable  development  milestones  achievable  upon
certain regulatory successes. The Company is also required to pay to Camurus, mid to mid-high single digit royalties, on a
product-by-product  and  country-by-country  basis  of  annual  net  sales,  until  the  later  of  (i)  10  years  after  the  date  of  first
commercial sale of such product in such country; or (ii) the expiration of the last to expire valid claim of all licensed patent
rights  in  such  country  covering  such  product.  The  Company  is  also  required  to  pay  one-time,  non-refundable,  non-
creditable  sales  milestones  upon  the  achievement  of  certain  sales  levels  for  such  product  that  cannot  be  in  excess  of
$57,000.

Takeda

In  March  2018,  the  Company  entered  into  a  license  agreement  with  Takeda,  for  the  rights  of  a  program  that
includes the clinical candidate RM-853, which is a GOAT inhibitor, which is currently in preclinical development for PWS.
  Pursuant  to  the  license  agreement  the  Company  was  required  to  pay  a  non-refundable  and  non-creditable  signing  fee,
which  the  Company  settled  by  issuing  on  April  3,  2018,  223,544  shares  of  common  stock  valued  at  $4,448.    Under  the
terms  of  the  license  agreement,  assuming  that  RM-853  is  successfully  developed,  receives  regulatory  approval  and  is
commercialized, the Company is also required to pay up to $70,000 in one-time, non-refundable development milestone
payments upon the achievement of certain clinical and regulatory milestones. The Company is also required to pay up to
$70,000 in one-time, non-refundable, non-creditable sales milestone payments upon the achievement of certain sales levels.
  The  Company  is  also  required  to  pay  to  Takeda,  mid  to  mid-high  single  digit  royalties  (subject  to  certain  potential
reductions over time), on a product-by-product and country-by-country basis of annual net sales, of each product in such
country, beginning on the first commercial sale of a product in such country, and continuing until the latest of (i) 10 years
after the date of first commercial sale of such product in such country; or (ii) the expiration of the last to expire valid claim
of a Takeda patents covering the composition or use of such product in such country; or (iii) the expiration of all regulatory
exclusivity for such product in such country. The Company recorded the fair value of the common stock to be issued to the
licensors as research and development expense, as the license does not have a future alternative use, in accordance with
ASC Topic 730, Research and Development.

F-25

Table of Contents

10. Commitments and Contingencies

Legal Proceedings

The Company, from time to time, may be party to various litigation arising in the ordinary course of business. The
Company  is  not  presently  subject  to  any  pending  or  threatened  litigation  that  it  believes,  if  determined  adversely  to  the
Company, individually, or taken together, would reasonably be expected to have a material adverse effect on its business or
financial results.

Other

The  Company  is  party  to  various  agreements,  principally  relating  to  licensed  technology,  that  require  future
payments relating to milestones that may be met in subsequent periods, or royalties on future sales of specified products.
 See Note 9 for discussion of these arrangements.  Additionally, the Company is party to various contracts with CROs and
CMOs that generally provide for termination on notice, with the exact amounts in the event of termination to be based on
the timing of the termination and the terms of the agreement.

Based  on  the Company’s  current  development  plans as of December 31, 2021,  potential payments due to third
parties  during    the    next    12    months    from    the    filing    of    this    Annual    Report  on    Form    10-K  are  estimated  be
approximately  $5,000  in  commercial  and  development  milestones,  in  connection  with  our  license  agreements.  These
milestones  generally  become    due    and    payable    upon  achievement  of  such  milestones  or  sales  and  achievement  of
development milestones.  When the  achievement  of  these  milestones or sales have not occurred, such contingencies are
not recorded in the Company’s consolidated financial statements.  

11. Related-Party Transactions

Amounts  paid  directly  to  consultants  and  vendors  considered  to  be  related  parties  amounted  to  $1,961,  $3,221,
and  $2,489  for  the  years  ended  December  31,  2021,  2020  and  2019,  respectively.  Outstanding  payments  due  to  these
related  parties  as  of  December  31,  2021  and  2020  were  $50  and  $187,  respectively,  and  were  included  within  accounts
payable on the consolidated balance sheets.

12. Income Tax

For the years ended December 31, 2021, 2020 and 2019 the Company did not have a current or deferred income
tax expense or benefit as the entity has incurred losses since inception and has provided a full valuation allowance against
its deferred tax assets.

A reconciliation of the income tax benefit at the federal statutory tax rate to the Company's effective income tax

rate is as follows:

Statutory tax rate
State tax, net of federal benefit
Research and development credit
Orphan drug credit
Tax law change
Stock compensation
Investor instrument revaluation
Other
Change in valuation allowance
Effective tax rate

F-26

As of
December 31, 
2020

2019

7.45 %  
2.94 %  
7.58 %  

2021
21.00 %   21.00 % 21.00 %
6.32 % 6.75 %
1.46 % 2.49 %
2.40 % 1.85 %
— %
(0.53)% (0.10)%
— %
(0.30)% 0.20 %
(37.45)%   (30.35)% (32.19)%
— %

— %   — %

— %   — %

— %   — %

(0.47)%  

(1.05)%  

 
 
    
    
  
  
 
 
 
 
 
 
 
 
 
 
Table of Contents

The principal components of the Company's deferred tax assets and liabilities are as follows:

Deferred tax assets:

Net operating loss carryforwards
Research and development credits
Orphan drug credit
Capitalized license fee
Stock-based compensation
Deferred revenue
Other

Total deferred tax assets
Valuation allowance
Net deferred tax assets
Deferred tax liabilities:

Operating lease right-of-use asset and other

Total deferred tax liabilities

As of
December 31, 

2021

2020

$ 113,098
13,477
15,385
2,651
9,150
1,901
2,976
  158,638
(158,211)
427

$ 102,367
10,347
10,110
2,492
6,621
—
2,267
134,204
(133,596)
608

(427)
(427) $

(608)
(608)

$

ASC  740  requires  a  valuation  allowance  to  reduce  the  deferred  tax  assets  reported  if,  based  on  the  weight  of
available evidence, it is more likely than not that some portion or all of the deferred tax assets will not be realized. After
consideration of all the evidence, both positive and negative, the Company has recorded a full valuation allowance against
its deferred tax assets at December 31, 2021 and 2020, because the Company's management has determined that is it more
likely  than  not  that  these  assets  will  not  be  realized.  The  increase  in  the  valuation  allowance  of  $24,615  in  2021  and
$40,653 in 2020 primarily relates to the net loss incurred by the Company during each period.

As of December 31, 2021, the Company had federal and state net operating loss carryforwards of approximately
$422,328  and  $385,092,  respectively,  which  are  available  to  reduce  future  taxable  income.  The  net  operating  loss
carryforwards expire at various times beginning in 2033 for federal and state purposes.  Of the federal net operating loss
carryforwards at December 31, 2021, $349,162 can be carried forward indefinitely.

As of December 31, 2021, the Company had federal and state research tax credits of approximately $10,161 and
$4,197, respectively, which may be used to offset future tax liabilities. Additionally, as of 2021, the Company had a federal
orphan drug credit related to qualifying research of $15,385. These tax credit carryforwards will begin to expire at various
times beginning in 2033 for federal purposes and 2028 for state purposes.

The net operating loss and tax credit carryforwards are subject to review and possible adjustment by the Internal
Revenue Service and state tax authorities. Net operating loss and tax credit carryforwards may become subject to an annual
limitation in the event of certain cumulative changes in the ownership interest of significant stockholders over a three-year
period  in  excess  of  50%,  as  defined  under  Sections  382  and  383  of  the  Internal  Revenue  Code,  respectively,  as  well  as
similar  state  provisions  and  other  provisions  within  the  Internal  Revenue  Code.  This  could  limit  the  amount  of  tax
attributes that can be utilized annually to offset future taxable income or tax liabilities. The amount of the annual limitation
is  determined  based  on  the  value  of  the  Company  immediately  prior  to  the  ownership  change.  Subsequent  ownership
changes may further affect the limitation in future years.    

The Company has not recorded any reserves for uncertain tax positions as of December 31, 2021 and 2020. The
Company has not, as yet, conducted a study of research and development credit carryforwards. This study may result in an
adjustment to the Company's research and development credit carryforwards; however, until a study is completed and any
adjustment  is  known,  no  amounts  are  being  presented  as  an  uncertain  tax  position.  A  full  valuation  allowance  has  been
provided against the Company's research and development credits and, if an adjustment is required, this adjustment would
be offset by an adjustment to the valuation allowance. Thus, there would be no impact to the balance sheets or statements
of operations and comprehensive loss if an adjustment were required.  

F-27

    
    
 
   
  
 
 
 
 
 
 
 
 
 
Table of Contents

In March 2020, the Coronavirus Aid, Relief, and Economic Security Act, the CARES Act, was signed into law.
The CARES Act includes provisions relating to several aspects of corporate income taxes. The CARES Act did not have a
significant impact on the Company’s provision for income taxes.

Interest and penalty charges, if any, related to unrecognized tax benefits will be classified as income tax expense
in the accompanying statements of operations and comprehensive loss. As of December 31, 2021 and 2020, the Company
had no accrued interest or penalties related to uncertain tax positions.

The Company is subject to examination by the U.S. federal, state and local income tax authorities for tax years
2013 forward. The Company is not currently under examination by the Internal Revenue Service or any other jurisdictions
for any tax years.

F-28

Table of Contents

13. Retirement Plan

The Company has a 401(k) defined contribution plan for the benefit for all US employees and permits voluntary

contributions by employees subject to IRS-imposed limitations. Beginning in 2021, the Company matched 100% of
eligible employee contributions on the first 4% of employee salary (up to the IRS maximum).  Contributions for the years
ended December 31, 2021, 2020 and 2019 were $886, $321 and $0, respectively.

14. Subsequent Events

The Company considers events or transactions that occur after the balance sheet date but prior to the issuance of
the financial statements to provide additional evidence for certain estimates or to identify matters that require additional
disclosure.  Subsequent  events  have  been  evaluated  as  required.  The  Company  has  evaluated  all  subsequent  events  and
determined  that  there  are  no  material  recognized  or  unrecognized  subsequent  events  requiring  disclosure,  other  than  as
disclosed with the above notes to these consolidated financial statements.

2022 Employment Inducement Plan

On  February  9,  2022,  the  Company’s  board  of  directors  adopted  the  Rhythm  Pharmaceuticals,  Inc.  2022
Employment Inducement Plan (the “Inducement Plan”) without stockholder approval pursuant to Rule 5635(c)(4) of the
Nasdaq  Stock  Market  LLC  listing  rules  (“Rule  5635(c)(4)”).  In  accordance  with  Rule  5635(c)(4),  awards  under  the
Inducement Plan may only be made to a newly hired employee who has not previously been a member of the Company’s
board of directors, or an employee who is being rehired following a bona fide period of non-employment by the Company
or a subsidiary, as a material inducement to the employee’s entering into employment with the Company or its subsidiary.
An aggregate of 1,000,000 shares of the Company’s common stock have been reserved for issuance under the Inducement
Plan. The Company will continue to grant awards under the 2017 Plan pursuant to the terms thereof.

The exercise price of stock options granted under the Inducement Plan will not be less than the fair market value
of a share of the Company’s common stock on the grant date. Other terms of awards, including vesting requirements, are
determined by the Company’s board of directors and are subject to the provisions of the Inducement Plan. Stock options
granted  to  employees  generally  vest  over  a  four-year  period  but  may  be  granted  with  different  vesting  terms.  Certain
options  may  provide  for  accelerated  vesting  in  the  event  of  a  change  in  control.  Stock  options  granted  under  the
Inducement Plan expire no more than 10 years from the date of grant. As of March 1, 2022, no stock option awards have
been issued under the Inducement Plan. As of March 1, 2022, no restricted stock unit awards have been granted under the
Inducement  Plan.  As  of  March  1,  2022,  1,000,000  shares  of  common  stock  are  available  for  future  grant  under  the
Inducement Plan

F-29

Exhibits 10.5.1

RHYTHM PHARMACEUTICALS, INC.

2022 EMPLOYMENT INDUCEMENT PLAN

TABLE OF CONTENTS

1. Purpose

2. Definitions

3. Term of the Plan

4.

Stock Subject to the Plan

5. Administration

6. Authorization of Grants

7.

Specific Terms of Awards

8. Adjustment Provisions

9. Change of Control

10. Settlement of Awards

11. Reservation of Stock

12. Limitation of Rights in Stock; No Special Service Rights

13. Unfunded Status of Plan

14. Nonexclusivity of the Plan

15. No Guarantee of Tax Consequences

16. Termination and Amendment of the Plan

17. Recoupment

18. Notices and Other Communications

19. Stockholder Approval Not Required

20. Governing Law

2

2

5

5

6

6

7

11

14

14

16

17

17

17

17

18

19

19

19

19

RHYTHM PHARMACEUTICALS, INC.

2022 EMPLOYMENT INDUCEMENT PLAN

1.

Purpose

This Plan is intended to provide incentives that will attract, retain and motivate highly competent officers, directors,
employees, consultants and advisors to promote the success of the Company’s business and align employees’ interests with
stockholders’ interests.

2.

Definitions

As used in this Plan, the following terms shall have the respective meanings set out below, unless the context clearly

requires otherwise:

2.1.

Accelerate,  Accelerated,  and  Acceleration,  means:  (a)  when  used  with  respect  to  an  Option  or  Stock
Appreciation Right, that as of the time of reference such Option or Stock Appreciation Right will become exercisable with
respect to some or all of the shares of Stock for which it was not then otherwise exercisable by its terms; (b) when used with
respect  to  Restricted  Stock  or  Restricted  Stock  Units,  that  the  Risk  of  Forfeiture  otherwise  applicable  to  such  Restricted
Stock or Restricted Stock Units shall expire with respect to some or all of such shares of Restricted Stock or such Restricted
Stock Units then still otherwise subject to the Risk of Forfeiture; and (c) when used with respect to Performance Units, that
the applicable Performance Goals or other business objectives shall be deemed to have been met as to some or all of such
Performance Units.

2.2.

Affiliate    means  any  parent  or  subsidiary  corporation  of  the  Company  (within  the  meaning  of  Sections

424(e) and 424(f) of the Code, respectively).

2.3.

Award  means  any  grant  or  sale  pursuant  to  the  Plan  of  Options,  Stock  Appreciation  Rights,  Performance

Units, Restricted Stock, Restricted Stock Units or Stock Grants.

2.4.

Award Agreement means an agreement between the Company and the recipient of an Award, or other notice

of grant of an Award, setting forth the terms and conditions of the Award.

2.5.

Board means the Company’s Board of Directors.

2.6.

Change of Control means the occurrence of any of the following after the date of the approval of the Plan by

the Board:

(a)

a  Transaction  (as  defined  in  Section  8.4),  unless  securities  possessing  more  than  50%  of  the  total
combined voting power of the survivor’s or acquiror’s outstanding securities (or the securities of any parent thereof) are held
by a person or persons who held securities possessing more than 50% of the total combined voting power of the Company’s
outstanding securities immediately prior to that Transaction; or

(b)

any person or group of persons (within the meaning of Section 13(d)(3) of the Securities Exchange
Act of 1934, as amended and in effect from time to time) that, directly or indirectly, acquires, including but not limited to by
means  of  a  merger  or  consolidation,  beneficial  ownership  (determined  pursuant  to  Securities  and  Exchange  Commission
Rule 13d-3 promulgated under the said Exchange Act) of securities possessing more than 50% of the total combined voting
power of the Company’s outstanding securities unless pursuant to a tender or exchange offer made directly to the

Company’s  stockholders  that  the  Board  recommends  such  stockholders  accept,  other  than  (i)  the  Company  or  any  of  its
Affiliates,  (ii)  an  employee  benefit  plan  of  the  Company  or  any  of  its  Affiliates,  (iii)  a  trustee  or  other  fiduciary  holding
securities under an employee benefit plan of the Company or any of its Affiliates, or (iv) an underwriter temporarily holding
securities pursuant to an offering of such securities; or

(c)

over a period of thirty-six (36) consecutive months or less, there is a change in the composition of
the Board such that a majority of the Board members (rounded up to the next whole number, if a fraction) ceases, by reason
of one or more proxy contests for the election of Board members, to be composed of individuals who either (i) have been
Board members continuously since the beginning of that period, or (ii) have been elected or nominated for election as Board
members during such period by at least a majority of the Board members described in the preceding clause (i) who were still
in office at the time that election or nomination was approved by the Board; or

(d)

a majority of the Board votes in favor of a decision that a Change of Control has occurred, which
vote  may  adopted  by  the  Board  with  the  intention  that  such  vote  become  effective  subject  to  and  contingent  upon  the
occurrence of certain events, in which case such Change of Control shall not be deemed to have occurred unless and until
such vote becomes effective in accordance with its terms.

2.7.

Code  means  the  Internal  Revenue  Code  of  1986,  as  amended  from  time  to  time,  or  any  successor  statute

thereto, and any regulations issued from time to time thereunder.

2.8.

Committee  means  the  Compensation  Committee  of  the  Board,  which  in  general  is  responsible  for  the
administration  of  the  Plan,  as  provided  in  Section  5  of  this  Plan.    For  any  period  during  which  no  such  committee  is  in
existence “Committee” shall mean the Board and all authority and responsibility assigned to the Committee under the Plan
shall be exercised, if at all, by the Board.

2.9.

Company  means  Rhythm  Pharmaceuticals,  Inc.,  a  corporation  organized  under  the  laws  of  the  State  of

Delaware.

2.10.

Eligible Individual means any individual (a) not previously an employee or director of the Company or a
subsidiary  of  the  Company  hired  as  a  new  employee  or  (b)  rehired  as  an  employee  following  a  bona  fide  period  of
interruption of employment, in either case, if such person is granted an Award as a material inducement to his or her entering
into employment with the Company or any Affiliate (within the meaning of the NASDAQ Rule 5635(c)(4)).

2.11.

“Forfeiture,”  “forfeit,”  and  derivations  thereof,  when  used  in  respect  of  Restricted  Stock  purchased  by  a
Participant,  includes  the  Company’s  repurchase  of  such  Restricted  Stock  at  less  than  its  then  Market  Value  as  a  means
intended to effect a forfeiture of value.

2.12. Grant Date means the date as of which an Option is granted, as determined under Section 7.1(a).

2.13.

Incentive Option means an Option which by its terms is to be treated as an “incentive stock option” within

the meaning of Section 422 of the Code.

2.14.

Independent  Director  means  a  director  who  qualifies  as  “independent”  within  the  meaning  of  NASDAQ

Rule 5635(c)(4), or any successor rule, as such rule may be amended from time to time.

2.15. Market  Value  means  the  value  of  a  share  of  Stock  on  a  particular  date  determined  by  such  methods  or
procedures as may be established by the Committee.  Unless otherwise determined by the Committee, the Market Value of
Stock as of any date is the closing price for the Stock as reported on the

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NASDAQ Stock Market (or on any other national securities exchange on which the Stock is then listed) for that date or, if no
closing price is reported for that date, the closing price on the first following date for which a closing price is reported.  For
purposes of Awards effective as of the effective date of the Company’s initial public offering, Market Value of Stock shall be
the price at which the Company’s Stock is offered to the public in its initial public offering.

2.16. NASDAQ Rule 5635(c)(4) means NASDAQ Rule 5635(c)(4), or any successor rule, and all guidance and

other interpretative authority thereunder, as such rule, guidance and other authority may be amended from time to time.

2.17. Nonstatutory Option means any option to purchase shares of Stock that is not an Incentive Option.

2.18. Option means a Nonstatutory Option.

2.19. Optionee means a Participant to whom an Option shall have been granted under the Plan.

2.20.

Participant means an Eligible Individual to whom an Award is granted under the Plan or, if applicable, such

other person who holds an outstanding award.

2.21.

Performance  Criteria  means  the  criteria  that  the  Committee  selects  for  purposes  of  establishing  the
Performance  Goal  or  Performance  Goals  for  a  Participant  for  a  Performance  Period.    The  Performance  Criteria  used  to
establish Performance Goals may include but are not limited to:  (i) net earnings (either before or after one or more of (A)
interest, (B) taxes, (C) depreciation and (D) amortization), (ii) gross or net sales or revenue, (iii) net income (either before or
after taxes), (iv) adjusted net income, (v) operating earnings or profit, (vi) cash flow (including, but not limited to, operating
cash  flow  and  free  cash  flow,  (vii)  return  on  assets,  (viii)  return  on  capital,  (ix)  return  on  stockholders’  equity,  (x)  total
stockholder return, (xi) return on sales, (xii) gross or net profit or operating margin, (xiii) costs, (xiv) expenses, (xv) working
capital, (xvi) earnings per share, (xvii) adjusted earnings per share, (xviii) price per share, (xix) regulatory body approval for
commercialization  of  a  product,  (xx)  implementation,  completion  or  attainment  of  objectives  relating  to  research,
development,  regulatory,  commercial,  or  strategic  milestones  or  developments;  (xxi)  market  share,  (xxii)  economic  value,
(xxiii) revenue, (xxiv) revenue growth and (xxv) operational and organizational metrics.

2.22.

Performance Goals means, for a Performance Period, the written goal or goals established by the Committee
for the Performance Period based upon one or more of the Performance Criteria.  The Performance Goals may be expressed
in terms of overall Company performance or the performance of a division, business unit, subsidiary, or an individual, either
individually, alternatively or in any combination, applied to either the Company as a whole or to a business unit or Affiliate,
either  individually,  alternatively  or  in  any  combination,  and  measured  either  quarterly,  annually  or  cumulatively  over  a
period  of  years,  on  an  absolute  basis  or  relative  to  a  pre-established  target,  to  previous  years’  results  or  to  a  designated
comparison group, in each case as specified by the Committee.

2.23.

Performance  Period  means  one  or  more  periods  of  time,  which  may  be  of  varying  and  overlapping
durations,  selected  by  the  Committee,  over  which  the  attainment  of  one  or  more  Performance  Goals  or  other  business
objectives will be measured for purposes of determining a Participant’s right to, and the payment of, an Award.

2.24.

Performance Unit means a right granted to a Participant under Section 7.5, to receive cash, Stock or other
Awards, the payment of which is contingent on achieving Performance Goals or other business objectives established by the
Committee.

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2.25.

Plan means this 2022 Employment Inducement Plan of the Company, as amended from time to time, and

including any attachments or addenda hereto.

2.26. Restricted Stock means a grant or sale of shares of Stock to a Participant subject to a Risk of Forfeiture.

2.27. Restricted  Stock  Units  means  rights  to  receive  shares  of  Stock,    cash  or  other  Awards  at  the  close  of  a

Restriction Period, subject to a Risk of Forfeiture.

2.28. Restriction Period means the period of time, established by the Committee in connection with an Award of
Restricted Stock or Restricted Stock Units, during which the shares of Restricted Stock or Restricted Stock Units are subject
to a Risk of Forfeiture described in the applicable Award Agreement.

2.29. Risk of Forfeiture means a limitation on the right of the Participant to retain Restricted Stock or Restricted
Stock Units, including a right of the Company to reacquire shares of Restricted Stock at less than their then Market Value,
arising because of the occurrence or non-occurrence of specified events or conditions.

2.30.

Stock means common stock, par value $0.001 per share, of the Company, and such other securities as may

be substituted for such common stock pursuant to Section 8.

2.31.

Stock Appreciation Right means a right to receive any excess in the Market Value of shares of Stock (except

as otherwise provided in Section 7.2(c)) over a specified exercise price.

2.32.

Stock Grant means the grant of shares of Stock not subject to restrictions or other forfeiture conditions.

2.33.

Stockholders’  Agreement  means  any  agreement  by  and  among  the  holders  of  at  least  a  majority  of  the
outstanding  voting  securities  of  the  Company  and  setting  forth,  among  other  provisions,  restrictions  upon  the  transfer  of
shares of Stock or on the exercise of rights appurtenant thereto (including but not limited to voting rights).

3.

Term of the Plan

The Plan became effective on the date on which the Plan was approved by the Board (the “Effective Date”).

4.

Stock Subject to the Plan

4.1.

Plan Share Limitations.

(a)

Limitation.    The  maximum  number  of  shares  of  Stock  that  may  be  issued  pursuant  to  Awards

granted under the Plan shall not exceed 1,000,000 shares of Stock.

(b)

Application.  For purposes of applying the foregoing limitation of Section 4.1(a), (i) if any Option
or Stock Appreciation Right expires,  terminates, or is cancelled for any reason without having been exercised in full, or if
any other Award is forfeited, the shares of Stock not purchased by the holder or subject to Awards which are forfeited, as the
case may be, shall again be available for Awards to be granted under the Plan, (ii) if any Option is exercised by delivering
previously owned shares of Stock or the withholding of a portion of the otherwise issuable shares of Stock subject to the
Option in payment of the exercise price therefor, only the net number of shares, that is, the number of shares of Stock issued

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minus  the  number  received  by  the  Company  in  payment  of  the  exercise  price,  shall  be  considered  to  have  been  issued
pursuant to an Award granted under the Plan, and (iii) any shares of Stock either delivered to or withheld by the Company in
satisfaction of tax withholding obligations of the Company or an Affiliate with respect to an Award shall again be available
for  Awards  to  be  granted  under  the  Plan.    In  addition,  settlement  of  any  Award  shall  not  count  against  the  foregoing
limitations  except  to  the  extent  settled  in  the  form  of  Stock.    Shares  of  Stock  issued  pursuant  to  the  Plan  may  be  either
authorized but unissued shares or shares held by the Company in its treasury.

4.2.
Section 8 of the Plan.

Adjustment of Limitations.  The share limitation of Section 4.1(a) shall be subject to adjustment pursuant to

5.

Administration

The  Plan  shall  be  administered  by  the  Committee;  provided,  however,  that  at  any  time  and  on  any  one  or  more
occasions the Board may itself exercise any of the powers and responsibilities assigned the Committee under the Plan and
when  so  acting  shall  have  the  benefit  of  all  of  the  provisions  of  the  Plan  pertaining  to  the  Committee’s  exercise  of  its
authorities hereunder.  Subject to the provisions of the Plan, the Committee shall have complete authority, in its discretion, to
make or to select the manner of making all determinations with respect to each Award to be granted by the Company under
the Plan including the Eligible Individual to receive the Award and the form of Award.  In making such determinations, the
Committee may take into account the nature of the services rendered by the respective Eligible Individuals, their present and
potential  contributions  to  the  success  of  the  Company  and  its  Affiliates,  and  such  other  factors  as  the  Committee  in  its
discretion shall deem relevant.  Subject to the provisions of the Plan, the Committee shall also have complete authority to
interpret the Plan, to prescribe, amend and rescind rules and regulations relating to it, to determine the terms and provisions
of  the  respective  Award  Agreements  (which  need  not  be  identical),  and  to  make  all  other  determinations  necessary  or
advisable for the administration of the Plan.  The Committee may adopt procedures from time to time that are intended to
ensure that an individual is an Eligible Individual prior to the granting of any Awards to such individual (including without
limitation a requirement that each such individual certify to the Company prior to the receipt of an Award that he or she is
not  currently  employed  by  the  Company  or  any  Affiliate  and,  if  previously  so  employed,  has  had  a  bona  fide  period  of
interruption  of  employment,  and  that  the  grant  of  Awards  is  an  inducement  material  to  his  or  her  agreement  to  enter  into
employment with the Company or its Affiliate).  The Committee’s determinations made in good faith on matters referred to
in the Plan shall be final, binding and conclusive on all persons having or claiming any interest under the Plan or an Award
made pursuant hereto.

6.

Authorization of Grants

6.1.

Eligibility.  The Committee may grant from time to time and at any time prior to the termination of the Plan

one or more Awards, either alone or in combination with any other Awards, to any Eligible Individual.

6.2.

General Terms of Awards.  Each grant of an Award shall be subject to all applicable terms and conditions of
the  Plan  (including  but  not  limited  to  any  specific  terms  and  conditions  applicable  to  that  type  of  Award  set  out  in  the
following Section), and such other terms and conditions, not inconsistent with the terms of the Plan, as the Committee may
prescribe.  No prospective Participant shall have any rights with respect to an Award, unless and until such Participant shall
have complied with the applicable terms and conditions of such Award (including if applicable delivering a fully executed
copy of any agreement evidencing an Award to the Company).

6.3.

Effect of Termination of Employment, Etc. Unless the Committee shall provide otherwise

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with  respect  to  any  Award  (including,  but  not  limited  to,  in  a  Participant’s  Award  Agreement),  if  the  Participant’s
employment  or  other  association  with  the  Company  and  its  Affiliates  ends  for  any  reason,  including  because  of  the
Participant’s employer ceasing to be an Affiliate, (a) any outstanding Option or Stock Appreciation Right of the Participant
shall cease to be exercisable in any respect not later than ninety (90) days following that event and, for the period it remains
exercisable following that event, shall be exercisable only to the extent exercisable at the date of that event, and (b) any other
outstanding  Award  of  the  Participant  to  the  extent  that  it  is  then  still  subject  to  Risk  of  Forfeiture  shall  be  forfeited  or
otherwise  subject  to  return  to  or  repurchase  by  the  Company  on  the  terms  specified  in  the  applicable  Award  Agreement.
 Cessation of the performance of services in one capacity, for example, as an employee, shall not result in termination of an
Award while the Participant continues to perform services in another capacity, for example as a director.  Military or sick
leave  or  other  bona  fide  leave  approved  by  the  Company  shall  not  be  deemed  a  termination  of  employment  or  other
association. To the extent consistent with applicable law, the Committee may provide that Awards continue to vest for some
or all of the period of any such leave, or that their vesting shall be tolled during any such leave and only recommence upon
the Participant’s return from leave, if ever.

6.4.

Non-Transferability  of  Awards.    Except  as  otherwise  provided  in  this  Section  6.4,  Awards  shall  not  be
transferable,  and  no  Award  or  interest  therein  may  be  sold,  transferred,  pledged,  assigned,  or  otherwise  alienated  or
hypothecated, other than by will or by the laws of descent and distribution.  The provisions of the immediately preceding
sentence shall not be applicable to Stock Grants which shall not be subject to any transfer restrictions under this Section 6.4.
 All of a Participant’s rights in any Award may be exercised during the life of the Participant only by the Participant or the
Participant’s legal representative.  However, the Committee may, at or after the grant of an Award of an  Option, or shares of
Restricted Stock, provide that such Award may be transferred by the recipient to a family member; provided, however, that
any  such  transfer  is  without  payment  of  any  consideration  whatsoever  and  that  no  transfer  shall  be  valid  unless  first
approved  by  the  Committee,  acting  in  its  sole  discretion.    For  this  purpose,  “family  member”  means  any  child,  stepchild,
grandchild, parent, grandparent, stepparent, spouse, former spouse, sibling, niece, nephew, mother-in-law, father-in-law, son-
in-law, daughter-in-law, brother-in-law, or sister-in-law, including adoptive relationships, any person sharing the employee’s
household (other than a tenant or employee), a trust in which the foregoing persons have more than fifty (50) percent of the
beneficial interests, a foundation in which the foregoing persons (or the Participant) control the management of assets, and
any other entity in which these persons (or the Participant) own more than fifty (50) percent of the voting interests.

7.

Specific Terms of Awards

7.1.

Options.

(a)

Date  of  Grant.    The  granting  of  an  Option  shall  take  place  at  the  time  specified  in  the  Award

Agreement.

(b)

Exercise Price.  The price at which shares of Stock may be acquired under each Option shall be not

less than 100% of the Market Value of Stock on the Grant Date.

(c)

Option Period.  No Option may be exercised on or after the tenth (10th) anniversary of the Grant

Date.

(d)

Exercisability.    An  Option  may  be  immediately  exercisable  or  become  exercisable  in  such
installments,  cumulative  or  non-cumulative,  as  the  Committee  may  determine.    In  the  case  of  an  Option  not  otherwise
immediately exercisable in full, the Committee may Accelerate such Option in whole or in part at any time.

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(e)

Method  of  Exercise.   An  Option  may  be  exercised  by  the  Optionee  giving  written  notice,  in  the
manner  provided  in  Section  18,  specifying  the  number  of  shares  of  Stock  with  respect  to  which  the  Option  is  then  being
exercised.  The notice shall be accompanied by payment in the form of cash or check payable to the order of the Company in
an amount equal to the exercise price of the shares of Stock to be purchased or, subject in each instance to the Committee’s
approval, acting in its sole discretion, and to such conditions, if any, as the Committee may deem necessary to avoid adverse
accounting effects to the Company,

(i)

by delivery to the Company of shares of Stock having a Market Value equal to the exercise

price of the shares to be purchased, or

(ii)

by the Company withholding shares of Stock otherwise issuable under the Option with such
withheld  shares  having  an  aggregate  Market  Value  equal  to  the  aggregate  exercise  price  of  the  shares  to  be
purchased, or

(iii)

unless prohibited by applicable law, by delivery to the Company of the Optionee’s executed
promissory  note  in  the  principal  amount  equal  to  the  exercise  price  of  the  shares  of  Stock  to  be  purchased  and
otherwise in such form as the Committee shall have approved.

If the Stock is traded on an established market, payment of any exercise price may also be made through and under the terms
and conditions of any formal cashless exercise program authorized by the Company entailing the sale of the Stock subject to
an Option in a brokered transaction (other than to the Company).  Receipt by the Company of such notice and payment in
any  authorized  or  combination  of  authorized  means  shall  constitute  the  exercise  of  the  Option.    Within  thirty  (30)  days
thereafter  but  subject  to  the  remaining  provisions  of  the  Plan,  the  Company  shall  deliver  or  cause  to  be  delivered  to  the
Optionee or his agent a certificate or certificates or shall cause the Stock to be held in book-entry position through the direct
registration system of the Company’s transfer agent for the number of shares then being purchased.  Such shares of Stock
shall be fully paid and nonassessable.

7.2.

Stock Appreciation Rights.

(a)

Tandem or Stand-Alone.  Stock Appreciation Rights may be granted in tandem after the award of
the Option, or alone and unrelated to an Option.  Stock Appreciation Rights in tandem with an Option shall terminate to the
extent  that  the  related  Option  is  exercised,  and  the  related  Option  shall  terminate  to  the  extent  that  the  tandem  Stock
Appreciation Rights are exercised.

(b)

Exercise Price.  Stock Appreciation Rights shall have an exercise price of not less than one hundred
percent (100%) of the Market Value of the Stock on the date of award, or in the case of Stock Appreciation Rights in tandem
with Options, the exercise price of the related Option.

(c)

Other  Terms.    Except  as  the  Committee  may  deem  inappropriate  or  inapplicable  in  the
circumstances, Stock Appreciation Rights shall be subject to terms and conditions substantially similar to those applicable to
an Option.  In addition, a Stock Appreciation Right related to an Option which can only be exercised during limited periods
following a Change of Control may entitle the Participant to receive an amount based upon the highest price paid or offered
for  Stock  in  any  transaction  relating  to  the  Change  of  Control  or  paid  during  the  thirty  (30)  day  period  immediately
preceding  the  occurrence  of  the  Change  of  Control  in  any  transaction  reported  in  the  stock  market  in  which  the  Stock  is
normally traded.

7.3.

Restricted Stock.

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(a)

Purchase Price.  Shares of Restricted Stock shall be issued under the Plan for such consideration, if

any, in cash, other property or services, or any combination thereof, as is determined by the Committee.

(b)

Issuance of Stock.  Each Participant receiving a Restricted Stock Award, subject to subsection (c)
below, shall be issued a stock certificate in respect of such shares of Restricted Stock or the shares shall be held in book-
entry  position  through  the  direct  registration  system  of  the  Company’s  transfer  agent.    If  a  certificate  is  issued,  such
certificate shall be registered in the name of such Participant, and, if applicable, shall bear an appropriate legend referring to
the terms, conditions, and restrictions applicable to such Award substantially in the following form:

“The shares evidenced by this certificate are subject to the terms and conditions of Rhythm Pharmaceuticals, Inc.’s
2022  Employment  Inducement  Plan  and  an  Award  Agreement  entered  into  by  the  registered  owner  and  Rhythm
Pharmaceuticals, Inc., copies of which will be furnished by the Company to the holder of the shares evidenced by
this certificate upon written request and without charge.”

If the Stock is in book-entry position through the direct registration system of the Company’s transfer agent, the restrictions
will be appropriately noted.

(c)

Escrow  of  Shares.    The  Committee  may  require  that  any  stock  certificates  evidencing  shares  of
Restricted  Stock  be  held  in  custody  by  a  designated  escrow  agent  (which  may  but  need  not  be  the  Company)  until  the
restrictions thereon shall have lapsed, and that the Participant deliver a stock power, endorsed in blank, relating to the Stock
covered by such Award.

(d)

Restrictions and Restriction Period.  During the Restriction Period applicable to shares of Restricted
Stock,  such  shares  shall  be  subject  to  limitations  on  transferability  and  a  Risk  of  Forfeiture  arising  on  the  basis  of  such
conditions  related  to  the  performance  of  services,  Company  or  Affiliate  performance  or  otherwise  as  the  Committee  may
determine and provide for in the applicable Award Agreement.  Any such Risk of Forfeiture may be waived or terminated, or
the Restriction Period shortened, at any time by the Committee on such basis as it deems appropriate.

(e)

Rights Pending Lapse of Risk of Forfeiture or Forfeiture of Award.  Except as otherwise provided in
the Plan or the applicable Award Agreement, the Participant shall have all of the rights of a stockholder of the Company with
respect to any outstanding shares of Restricted Stock, including the right to vote, and the right to receive any dividends with
respect  to,  the  shares  of  Restricted  Stock  (but  any  dividends  or  other  distributions  payable  in  shares  of  Stock  or  other
securities of the Company shall constitute additional Restricted Stock, subject to the same Risk of Forfeiture as the shares of
Restricted Stock in respect of which such shares of Stock or other securities are paid).  The Committee, as determined at the
time of Award, may permit or require the payment of cash dividends to be deferred and, if the Committee so determines,
reinvested in additional Restricted Stock to the extent shares of Stock are available under Section 4.

(f)

Lapse  of  Restrictions.    If  and  when  the  Restriction  Period  expires  without  a  prior  forfeiture,  any

certificates for such shares shall be delivered to the Participant promptly if not theretofore so delivered.

7.4.

Restricted Stock Units.

(a)

Character.  Subject to Section 10, each Restricted Stock Unit shall entitle the recipient to a share of

Stock at a close of such Restriction Period as the Committee may establish and subject

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to a Risk of Forfeiture arising on the basis of such conditions relating to the performance of services, Company or Affiliate
performance or otherwise as the Committee may determine and provide for in the applicable Award Agreement.  Any such
Risk of Forfeiture may be waived or terminated, or the Restriction Period shortened, at any time by the Committee on such
basis as it deems appropriate.

(b)

Form and Timing of Payment.  Payment of earned Restricted Stock Units shall be made promptly
following the close of the applicable Restriction Period.  At the discretion of the Committee, Participants may be entitled to
receive payments equivalent to any dividends declared with respect to Stock referenced in grants of Restricted Stock Units
but  only  following  the  close  of  the  applicable  Restriction  Period  and  then  only  if  the  underlying  Stock  shall  have  been
earned.  Unless the Committee shall provide otherwise, any such dividend equivalents shall be paid, if at all, without interest
or other earnings.  The Committee may permit or, if it so provides at grant require, a Participant to defer such Participant’s
receipt of the payment that would otherwise be due to such Participant with respect to Restricted Stock Units.  If any such
deferral election is required or permitted, the Committee shall establish rules and procedures for such payment deferrals.

7.5.

Performance Units.

(a)

Character. Each Performance Unit shall entitle the recipient to the value of a specified number of
shares of Stock, over the initial value for such number of shares, if any, established by the Committee at the time of grant, at
the  close  of  a  specified  Performance  Period  to  the  extent  specified  business  objectives,  including  but  not  limited  to
Performance Goals, shall have been achieved.

(b)

Earning  of  Performance  Units.  The  Committee  shall  set  Performance  Goals  or  other  business
objectives in its discretion which, depending on the extent to which they are met within the applicable Performance Period,
will  determine  the  number  and  value  of  Performance  Units  that  will  be  paid  out  to  the  Participant.   After  the  applicable
Performance Period has ended, the holder of Performance Units shall be entitled to receive payout on the number and value
of Performance Units earned by the Participant over the Performance Period, to be determined as a function of the extent to
which the corresponding Performance Goals or other business objectives have been achieved.

(c)

Form  and  Timing  of  Payment.    Unless  otherwise  provided  in  the  applicable  Award  Agreement,
payment of earned Performance Units shall be made in a single lump sum following the close of the applicable Performance
Period.  At the discretion of the Committee, Participants may be entitled to receive any dividends declared with respect to
Stock  which  have  been  earned  in  connection  with  grants  of  Performance  Units  which  have  been  earned,  but  not  yet
distributed  to  Participants.    The  Committee  may  permit  or,  if  it  so  provides  at  grant  require,  a  Participant  to  defer  such
Participant’s receipt of the payment of cash or the delivery of Stock that would otherwise be due to such Participant by virtue
of the satisfaction of any requirements or goals with respect to Performance Units.  If any such deferral election is required
or permitted, the Committee shall establish rules and procedures for such payment deferrals.

7.6.

Stock  Grants.  Stock  Grants  shall  be  awarded  solely  in  recognition  of  significant  prior  or  expected
contributions  to  the  success  of  the  Company  or  its  Affiliates,  as  an  inducement  to  employment,  in  lieu  of  compensation
otherwise already due and in such other limited circumstances as the Committee deems appropriate.  Stock Grants shall be
made without forfeiture conditions of any kind.

7.7.

Awards  to  Participants  Outside  the  United  States.    The  Committee  may  modify  the  terms  of  any  Award
under the Plan granted to a Participant who is, at the time of grant or during the term of the Award, resident or primarily
employed outside of the United States in any manner deemed by the Committee to be necessary or appropriate in order that
the  Award  shall  conform  to  laws,  regulations,  procedures,  and  customs  of  the  country  in  which  the  Participant  is  then
resident or primarily employed, or

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so  that  the  value  and  other  benefits  of  the  Award  to  the  Participant,  as  affected  by  foreign  tax  laws  and  other  restrictions
applicable as a result of the Participant’s residence or employment abroad, shall be as comparable as practicable to the value
of such an Award to a Participant who is resident or primarily employed in the United States.  The Committee may establish
supplements or sub-plans to, or amendments, restatements, or alternative versions of, the Plan for the purpose of granting
and  administrating  any  such  modified  Award.    No  such  modification,  supplement,  sub-plan,  amendment,  restatement  or
alternative version may increase the share limit of Section 4.

8.

Adjustment Provisions

8.1.

Adjustment for Corporate Actions. All of the share numbers set forth in the Plan reflect the capital structure
of the Company as of the Effective Date.  If subsequent to that date the outstanding shares of Stock (or any other securities
covered by the Plan by reason of the prior application of this Section) are increased, decreased, or exchanged for a different
number  or  kind  of  shares  or  other  securities,  or  if  additional  shares  or  new  or  different  shares  or  other  securities  are
distributed with respect to shares of Stock, as a result of a reorganization, recapitalization, reclassification, stock dividend,
stock split, reverse stock split, or other similar distribution with respect to such shares of Stock, an equitable adjustment will
be made in (i) the maximum numbers and kinds of shares provided in Section 4, (ii) the numbers and kinds of shares or other
securities subject to the then outstanding Awards, (iii) the exercise price for each share or other unit of any other securities
subject  to  then  outstanding  Options  and  Stock  Appreciation  Rights  (without  change  in  the  aggregate  purchase  price  as  to
which  such  Options  or  Rights  remain  exercisable),  and  (iv)  the  repurchase  price  of  each  share  of  Restricted  Stock  then
subject to a Risk of Forfeiture in the form of a Company repurchase right.

8.2.

Adjustment of Awards Upon the Occurrence of Certain Unusual or Nonrecurring Events. In the event of any
corporate  action  not  specifically  covered  by  the  preceding  Section,  including  but  not  limited  to  an  extraordinary  cash
distribution  on  Stock,  a  corporate  separation  or  other  reorganization  or  liquidation,  the  Committee  shall  make  such
adjustment  of  outstanding  Awards  and  their  terms,  if  any,  as  it,  in  its  sole  discretion,  may  deem  equitable  in  the
circumstances.  The Committee may make adjustments in the terms and conditions of, and the criteria included in, Awards in
recognition of unusual or nonrecurring events (including, without limitation, the events described in this Section) affecting
the  Company  or  the  financial  statements  of  the  Company  or  of  changes  in  applicable  laws,  regulations,  or  accounting
principles,  whenever  the  Committee  determines  that  such  adjustments  are  appropriate  in  order  to  prevent  dilution  or
enlargement of the benefits or potential benefits intended to be made available under the Plan.

8.3.

Related Matters.  Any adjustment in Awards made pursuant to Section 8.1 or Section 8.2 shall be determined
and made, if at all, by the Committee, acting in its sole discretion, and shall include any correlative modification of terms,
including of Option exercise prices, rates of vesting or exercisability, Risks of Forfeiture, applicable repurchase prices for
Restricted  Stock,  and  Performance  Goals  and  other  business  objectives  which  the  Committee  may  deem  necessary  or
appropriate  so  as  to  ensure  the  rights  of  the  Participants  in  their  respective  Awards  are  not  substantially  diminished  nor
enlarged  as  a  result  of  the  adjustment  and  corporate  action  other  than  as  expressly  contemplated  in  this  Section  8.    The
Committee,  in  its  discretion,  may  determine  that  no  fraction  of  a  share  of  Stock  shall  be  purchasable  or  deliverable  upon
exercise, and in that event if any adjustment hereunder of the number of shares of Stock covered by an Award would cause
such number to include a fraction of a share of Stock, such number of shares of Stock shall be adjusted to the nearest smaller
whole number of shares.  No adjustment of an Option exercise price per share pursuant to Section 8.1 or Section 8.2 shall
result in an exercise price which is less than the par value of the Stock.

8.4.

Transactions.

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(a)

Definition of Transaction. In this Section 8.4, “Transaction” means (1) any merger or consolidation
of the Company with or into another entity as a result of which the Stock of the Company is converted into or exchanged for
the right to receive cash, securities or other property or is cancelled, (2) any sale or exchange of all or substantially all of the
outstanding Stock of the Company for cash, securities or other property, (3) any sale, transfer, or other disposition of all or
substantially all of the Company’s assets to one or more other persons in a single transaction or series of related transactions
or (4) any liquidation or dissolution of the Company.

(b)

Treatment of Awards. In a Transaction, the Committee may take any one or more of the following

actions as to all or any (or any portion of) outstanding Awards, subject to the provisions of Section 9 of this Plan.

(1)

Provide  that  any  Awards  shall  be  assumed,  or  substantially  equivalent  rights  shall  be

provided in substitution therefor, by the acquiring or succeeding entity (or an affiliate thereof).

(2)

Upon  written  notice  to  the  holders,  provide  that  all  or  any  of  the  holders’  unexercised
outstanding Options and Stock Appreciation Rights (collectively, “Rights”) will terminate immediately prior to the
consummation of such Transaction unless exercised within a specified period following the date of such notice.

(3)

Provide  that  all  or  any  Awards  that  are  subject  to  Risk  of  Forfeiture  will  terminate

immediately prior to the consummation of such Transaction.

(4)

Provide that all or any outstanding Rights shall Accelerate so as to become exercisable prior
to or upon such Transaction with respect to some or all of the shares of Stock for which any such Rights would not
then otherwise be exercisable by their terms.

(5)

Provide  that  all  or  any  outstanding  Awards  that  are  subject  to  Risk  of  Forfeiture  shall
Accelerate  so  that  the  Risk  of  Forfeiture  otherwise  applicable  to  such  Awards  shall  expire  prior  to  or  upon  such
Transaction with respect to any such Awards that would then still otherwise be subject to the Risk of Forfeiture.

(6)

Provide for cash payments, net of applicable tax withholdings, to be made to holders equal
to the excess, if any, of (A) the acquisition price times the number of shares of Stock subject to an Option and Stock
Appreciation Right (in each case, to the extent the exercise price does not exceed the acquisition price) over (B) the
aggregate exercise price for all such shares of Stock subject to the Option or Stock Appreciation Right as applicable,
in exchange for the termination of such Option and Stock Appreciation Right; provided, that if the acquisition price
does not exceed the exercise price of any such Option or Stock Appreciation Right, the Committee may cancel that
Option  and  Stock  Appreciation  Right  without  the  payment  of  any  consideration  therefore  prior  to  or  upon  the
Transaction.  For purposes of this paragraph 6 and paragraph 7 below, “acquisition price” means the amount of cash,
and market value of any other consideration, received in payment for a share of Stock surrendered in a Transaction
but need not take into account any deferred consideration unless and until received.

(7)

Provide  for  cash  payments,  net  of  applicable  tax  withholdings,  to  be  made  to  holder  or
holders of all or any Awards (other than Options and Stock Appreciation Rights) equal to the acquisition price times
the number of shares of Stock

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subject to any such Awards, in exchange for the termination of any such Awards; provided, that the Committee may
cancel,  pursuant  to  paragraph  3  above,  any  such  Award  that  is  subject  to  a  Risk  of  Forfeiture  at  the  time  of  the
consummation  of  such  Transaction  without  the  payment  of  any  consideration  therefor    prior  to  or  upon  the
Transaction.

(8)

Provide  that,  in  connection  with  a  liquidation  or  dissolution  of  the  Company,  all  or  any
Awards (other than Restricted Stock or Stock Grants) shall convert into the right to receive liquidation proceeds net
of the exercise price thereof and any applicable tax withholdings.

(9)

Any combination of the foregoing.

In the event that the Committee determines in its discretion to take the actions contemplated under paragraph (1) above of
this  Section  8.4(b)  with  respect  to  all  or  any  Awards,  the  Committee  shall  ensure  that,  upon  consummation  of  the
Transaction, any such Awards are assumed and/or exchanged or replaced with another similar award issued by the acquiring
or  succeeding  entity  (or  an  affiliate  thereof)  and  that,  as  a  result  of  such  assumption  and/or  exchange  or  replacement,  the
holder  of  such  assumed  Award  and/or  such  exchanged  or  replaced  similar  award  has  the  right  to  purchase  or  receive  the
value  of,  for  each  share  of  Stock  subject  to  such  Award  immediately  prior  to  the  consummation  of  the  Transaction,  the
consideration (whether cash, securities or other property) received as a result of the Transaction by holders of Stock for each
share  of  Stock  held  immediately  prior  to  the  consummation  of  the  Transaction  (and  if  holders  were  offered  a  choice  of
consideration, the type of consideration chosen by the holders of a majority of the outstanding shares of Stock); provided,
however, that if such consideration received as a result of the Transaction is not solely common stock (or its equivalent) of
the  acquiring  or  succeeding  entity  (or  an  affiliate  thereof),  the  Committee  may,  with  the  consent  of  the  acquiring  or
succeeding entity (or an affiliate thereof), provide for the consideration to be received with respect to such assumed Award
and/or such exchanged or replaced similar award to consist of or be based solely on common stock (or its equivalent) of the
acquiring or succeeding entity (or an affiliate thereof) equivalent in value to the per share consideration received by holders
of  outstanding  shares  of  Stock  as  a  result  of  the  Transaction;  and  provided, further,  that  if    such  Award  is  an  Option,  the
holder of such Option must exercise the Option and make payment of the applicable exercise price in connection therewith
in order to receive such consideration.

(c)

Treatment  of  Other  Awards.  Upon  the  occurrence  of  a  Transaction  other  than  a  liquidation  or
dissolution of the Company which is not part of another form of Transaction, then, subject to the provisions of Section 9
below,  with  respect  to  all  outstanding  Awards  (other  than  Options  and  Stock  Appreciation  Rights)  that  are  not  terminated
prior to or upon such Transaction, the repurchase and other rights of the Company under each such Award shall inure to the
benefit of the Company’s successor and any forfeiture restrictions shall continue to apply and shall, unless the Committee
determines otherwise, apply to the cash, securities or other property which the Stock was converted into or exchanged for
pursuant to such Transaction in the same manner and to the same extent as they applied to the Award.

(d)

Related Matters. In taking any of the actions permitted under this Section 8.4, the Committee shall
not  be  obligated  to  treat  all  Awards,  all  Awards  held  by  a  Participant,  or  all  Awards  of  the  same  type,  identically.  Any
determinations  required  to  carry  out  the  foregoing  provisions  of  this  Section  8.4,  including  but  not  limited  to  the  market
value of other consideration received by holders of Stock in a Transaction and whether substantially equivalent Rights have
been substituted, shall be made by the Committee acting in its sole discretion.  In connection with any action or actions taken
by  the  Committee  in  respect  of  Awards  and  in  connection  with  a  Transaction,  the  Committee  may  require  such
acknowledgements of satisfaction and releases from Participants as it may determine.

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9.

Change of Control

Except as otherwise provided below, upon the occurrence of a Change of Control, to the extent that the surviving
entity  declines  to  continue,  convert,  assume  or  replace  outstanding  Awards,  then,  notwithstanding  anything  express  or
implied to the contrary in Section 8.4 above:

(a)

any and all Options and Stock Appreciation Rights not already exercisable in full shall Accelerate

with respect to 100% of the shares for which such Options or Stock Appreciation Rights are not then exercisable;

(b)

any Risk of Forfeiture applicable to Restricted Stock and Restricted Stock Units which is not based
on achievement of Performance Goals or other business objectives shall lapse with respect to 100% of the Restricted Stock
and Restricted Stock Units still subject to such Risk of Forfeiture immediately prior to the Change of Control; and

(c)

all  outstanding  Awards  of  Restricted  Stock  and  Restricted  Stock  Units  conditioned  on  the
achievement of Performance Goals or other business objectives and the payouts attainable under outstanding Performance
Units shall be deemed to have been satisfied at target as of the effective date of the Change of Control, except if and to the
extent otherwise determined by the Committee in its sole discretion at any time prior to, or upon, such Change of Control.

All  such  Awards  of  Performance  Units  and  Restricted  Stock  Units  shall  be  paid  to  the  extent  earned  to  Participants  in
accordance  with  their  terms  within  thirty  (30)  days  following  the  effective  date  of  the  Change  of  Control.    None  of  the
foregoing shall apply, however, (i) in the case of any Award pursuant to an Award Agreement requiring other or additional
terms upon a Change of Control (or similar event), or (ii) if specifically prohibited under applicable laws, or by the rules and
regulations of any governing governmental agencies or national securities exchanges.

10.

Settlement of Awards

10.1.

In General.  Options and Restricted Stock shall be settled in accordance with their terms.  All other Awards
may be settled in cash, Stock, or other Awards, or a combination thereof, as determined by the Committee at or after grant
and subject to any contrary Award Agreement.  The Committee may not require settlement of any Award in Stock pursuant
to the immediately preceding sentence to the extent issuance of such Stock would be prohibited or unreasonably delayed by
reason of any other provision of the Plan.

10.2. Violation of Law.  Notwithstanding any other provision of the Plan or the relevant Award Agreement, if, at
any time, in the reasonable opinion of the Company, the issuance of shares of Stock covered by an Award may constitute a
violation  of  law,  then  the  Company  may  delay  such  issuance  until  (i)  approval  shall  have  been  obtained  from  such
governmental agencies, other than the Securities and Exchange Commission, as may be required under any applicable law,
rule,  or  regulation  and  (ii)  in  the  case  where  such  issuance  would  constitute  a  violation  of  a  law  administered  by  or  a
regulation of the Securities and Exchange Commission, one of the following conditions shall have been satisfied:

(a)

the  shares  of  Stock  are  at  the  time  of  the  issue  of  such  shares  effectively  registered  under  the

Securities Act of 1933, as amended; or

(b)

the Company shall have determined, on such basis as it deems appropriate (including an opinion of
counsel in form and substance satisfactory to the Company) that the sale, transfer, assignment, pledge, encumbrance or other
disposition of such shares does not require registration under the

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Securities Act of 1933, as amended or any applicable State securities laws.

Furthermore,  the  inability  of  the  Company  to  obtain  or  maintain,  or  the  impracticability  of  it  obtaining  or  maintaining,
authority  from  any  governmental  agency  having  jurisdiction,  which  authority  is  deemed  by  the  Company’s  counsel  to  be
necessary to the lawful issuance of any Stock hereunder, shall relieve the Company of any liability in respect of the failure to
issue  such  Stock  as  to  which  such  requisite  authority  shall  not  have  been  obtained,  and  shall  constitute  circumstances  in
which the Committee may determine to amend or cancel Awards pertaining to such Stock, with or without consideration to
the affected Participants.

10.3. Corporate  Restrictions  on  Rights  in  Stock.  Any  Stock  to  be  issued  pursuant  to  Awards  granted  under  the
Plan shall be subject to all restrictions upon the transfer thereof which may be now or hereafter imposed by the certificate of
incorporation, and bylaws.

10.4.

Investment  Representations.    The  Company  shall  be  under  no  obligation  to  issue  any  shares  of  Stock
covered  by  any  Award  unless  the  shares  to  be  issued  pursuant  to  Awards  granted  under  the  Plan  have  been  effectively
registered under the Securities Act of 1933, as amended, or the Participant shall have made such written representations to
the  Company  (upon  which  the  Company  believes  it  may  reasonably  rely)  as  the  Company  may  deem  necessary  or
appropriate for purposes of confirming that the issuance of such shares will be exempt from the registration requirements of
that Act and any applicable state securities laws and otherwise in compliance with all applicable laws, rules and regulations
of  any  jurisdiction  in  which  Participants  may  reside  or  primarily  work,  including  but  not  limited  to  that  the  Participant  is
acquiring  the  shares  for  his  or  her  own  account  for  the  purpose  of  investment  and  not  with  a  view  to,  or  for  sale  in
connection with, the distribution of any such shares.

10.5. Registration.    If  the  Company  shall  deem  it  necessary  or  desirable  to  register  under  the  Securities  Act  of
1933, as amended, or other applicable statutes any shares of Stock issued or to be issued pursuant to Awards granted under
the  Plan,  or  to  qualify  any  such  shares  of  Stock  for  exemption  from  the  Securities  Act  of  1933,  as  amended  or  other
applicable  statutes,  then  the  Company  shall  take  such  action  at  its  own  expense.    The  Company  may  require  from  each
recipient of an Award, or each holder of shares of Stock acquired pursuant to the Plan, such information in writing for use in
any registration statement, prospectus, preliminary prospectus or offering circular as is reasonably necessary for that purpose
and  may  require  reasonable  indemnity  to  the  Company  and  its  officers  and  directors  from  that  holder  against  all  losses,
claims, damage and liabilities arising from use of the information so furnished and caused by any untrue statement of any
material fact therein or caused by the omission to state a material fact required to be stated therein or necessary to make the
statements therein not misleading in the light of the circumstances under which they were made.  In addition, the Company
may require of any such person that he or she agree that, without the prior written consent of the Company or the managing
underwriter in any public offering of shares of Stock, he or she will not sell, make any short sale of, loan, grant any option
for the purchase of, pledge or otherwise encumber, or otherwise dispose of, any shares of Stock during the 180 day period
commencing on the effective date of the registration statement relating to the underwritten public offering of securities (or
during such shorter or longer period of time as the Committee shall determine in its sole discretion, which period of time
shall  commence  from  and  after  such  effective  date  of  such  registration  statement).  Without  limiting  the  generality  of  the
foregoing  provisions  of  this  Section  10.5,  if  in  connection  with  any  underwritten  public  offering  of  securities  of  the
Company the managing underwriter of such offering requires that the Company’s directors and officers enter into a lock-up
agreement  containing  provisions  that  are  more  restrictive  than  the  provisions  set  forth  in  the  preceding  sentence,  then  (a)
each holder of shares of Stock acquired pursuant to the Plan (regardless of whether such person has complied or complies
with the provisions of clause (b) below) shall be bound by, and shall be deemed to have agreed to, the same lock-up terms as
those to which the Company’s directors and officers are required to adhere; and (b) at the request of the Company or such
managing underwriter, each such person shall execute and deliver a lock-up agreement in form and substance equivalent to
that which is required to be executed by

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the Company’s directors and officers.

10.6.

Placement of Legends; Stop Orders; etc.  Each share of Stock to be issued pursuant to Awards granted under
the  Plan  may  bear  a  reference  to  the  investment  representations  made  in  accordance  with  Section  10.4  in  addition  to  any
other  applicable  restrictions  under  the  Plan,  and  the  terms  of  the  Award  and,  if  applicable,  to  the  fact  that  no  registration
statement  has  been  filed  with  the  Securities  and  Exchange  Commission  in  respect  to  such  shares  of  Stock.   All  shares  of
Stock  or  other  securities  issued  under  the  Plan  shall  be  subject  to  such  stop  transfer  orders  and  other  restrictions  as  the
Committee may deem advisable under the rules, regulations, and other requirements of any stock exchange upon which the
Stock is then listed, and any applicable federal or state securities law, and the Committee may cause a legend or legends to
be placed on any such certificates to make appropriate reference to such restrictions, or, if the Stock will be held in book-
entry position through the direct registration system of the Company’s transfer agent, the restrictions will be appropriately
noted.

10.7.

Tax Withholding. Whenever shares of Stock are issued or to be issued pursuant to Awards granted under the
Plan,  the  Company  shall  have  the  right  to  require  the  recipient  to  remit  to  the  Company  an  amount  sufficient  to  satisfy
federal, state, local, foreign or other withholding tax requirements if, when, and to the extent required by law (whether so
required to secure for the Company an otherwise available tax deduction or otherwise) prior to the delivery of any certificate
or certificates, held in book-entry position through the direct registration system of the Company’s transfer agent, for such
shares.    The  obligations  of  the  Company  under  the  Plan  shall  be  conditional  on  satisfaction  of  all  such  withholding
obligations and the Company shall, to the extent permitted by law, have the right to deduct any such taxes from any payment
of any kind otherwise due to a Participant or to utilize any other withholding method prescribed by the Committee from time
to  time.    However,  in  such  cases  Participants  may  elect,  subject  to  the  approval  of  the  Committee,  acting  in  its  sole
discretion, to satisfy an applicable withholding requirement, in whole or in part, by having the Company withhold shares of
Stock to satisfy their tax obligations.  All elections shall be irrevocable, made in writing, signed by the Participant, and shall
be subject to any restrictions or limitations that the Committee deems appropriate.  If shares of Stock are withheld to satisfy
an applicable withholding requirement, the shares of Stock withheld shall have a Market Value on the date the tax is to be
determined equal to the minimum statutory total tax (or tax calculated at such higher rates as determined by the Committee)
which could be imposed on the transaction.

10.8. Company  Certificate  of  Incorporation  and  Bylaws;  Other  Company  Policies.  This  Plan  and  all  Awards
granted hereunder are subject to the certificate of incorporation and bylaws of the Company, as they may be amended from
time to time, and all other Company policies duly adopted by the Board, the Committee or any other committee of the Board
and as in effect from time to time regarding the acquisition, ownership or sale of Stock by officers, employees, directors,
consultants,  advisors  and  other  service  providers,  including,  without  limitation,  policies  intended  to  limit  the  potential  for
insider  trading  and  to  avoid  or  recover  compensation  payable  or  paid  on  the  basis  of  inaccurate  financial  results  or
statements, employee conduct, and other similar events.

10.9. Action Required upon Grant of an Award.  Promptly following the grant of an Award, the Company shall, in
accordance with NASDAQ Rule 5635(c), (a) issue a press release disclosing the material terms of the Award, including the
recipient(s) of the Award and the number of shares of Stock involved and (b) provide written notice to the NASDAQ of the
grant.

11.

Reservation of Stock

The Company shall at all times during the term of the Plan and any outstanding Awards granted hereunder reserve or

otherwise keep available such number of shares of Stock as will be sufficient to satisfy

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the requirements of the Plan (if then in effect) and the Awards and shall pay all fees and expenses necessarily incurred by the
Company in connection therewith.

12.

Limitation of Rights in Stock; No Special Service Rights

A Participant shall not be deemed for any purpose to be a stockholder of the Company with respect to any of the
shares  of  Stock  subject  to  an  Award,  unless  and  until  a  certificate  shall  have  been  issued  therefor  and  delivered  to  the
Participant or his agent, or the Stock shall be issued through the direct registration system of the Company’s transfer agent.
 Any  Stock  to  be  issued  pursuant  to  Awards  granted  under  the  Plan  shall  be  subject  to  all  restrictions  upon  the  transfer
thereof which may be now or hereafter imposed by the certificate of incorporation and the bylaws of the Company.  Nothing
contained in the Plan or in any Award Agreement shall confer upon any recipient of an Award any right with respect to the
continuation of his or her employment or other association with the Company (or any Affiliate), or interfere in any way with
the  right  of  the  Company  (or  any  Affiliate),  subject  to  the  terms  of  any  separate  employment  or  consulting  agreement  or
provision  of  law  or  certificate  of  incorporation  or  bylaws  to  the  contrary,  at  any  time  to  terminate  such  employment  or
consulting  agreement  or  to  increase  or  decrease,  or  otherwise  adjust,  the  other  terms  and  conditions  of  the  recipient’s
employment or other association with the Company and its Affiliates.

13.

Unfunded Status of Plan

The Plan is intended to constitute an “unfunded” plan for incentive compensation, and the Plan is not intended to
constitute  a  plan  subject  to  the  provisions  of  the  Employee  Retirement  Income  Security  Act  of  1974,  as  amended.   With
respect  to  any  payments  not  yet  made  to  a  Participant  by  the  Company,  nothing  contained  herein  shall  give  any  such
Participant any rights that are greater than those of a general creditor of the Company.  In its sole discretion, the Committee
may authorize the creation of trusts or other arrangements to meet the obligations created under the Plan to deliver Stock or
payments  with  respect  to  Awards  hereunder,  provided,  however,  that  the  existence  of  such  trusts  or  other  arrangements  is
consistent with the unfunded status of the Plan.

14.

Nonexclusivity of the Plan

Neither the adoption of the Plan by the Board nor any action taken in connection with the adoption or operation of
the Plan shall be construed as creating any limitations on the power of the Board to adopt such other incentive arrangements
as it may deem desirable, including without limitation, the granting of stock options and restricted stock other than under the
Plan, and such arrangements may be either applicable generally or only in specific cases.

15.

No Guarantee of Tax Consequences

It  is  intended  that  all  Awards  shall  be  granted  and  maintained  on  a  basis  which  ensures  they  are  exempt  from,  or
otherwise  compliant  with,  the  requirements  of  Section  409A  of  the  Code,  pertaining  non-qualified  plans  of  deferred
compensation, and the Plan shall be governed, interpreted and enforced consistent with such intent.  However, neither the
Company  nor  any  Affiliate,  nor  any  director,  officer,  agent,  representative  or  employee  of  either,  guarantees  to  the
Participant  or  any  other  person  any  particular  tax  consequences  as  a  result  of  the  grant  of,  exercise  of  rights  under,  or
payment in respect of an Award, including but not limited to that the provisions and penalties of Section 409A of the Code
will or will not apply and no person shall have any liability to a Participant or any other party if a payment under an Award
that is intended to benefit from favorable tax treatment or avoid adverse tax treatment fails to realize such intention or for
any action taken by the Board or the Committee with respect to the Award.

- 17 -

16.

Termination and Amendment of the Plan

16.1.

Termination  or  Amendment  of  the  Plan.  Subject  to  the  limitations  contained  in  Section  16.3  below,
including  specifically  the  requirement  of  stockholder  approval,  if  applicable,  the  Committee  may  at  any  time  suspend  or
terminate  the  Plan  or  make  such  modifications  of  the  Plan  as  it  shall  deem  advisable.    Unless  the  Committee  otherwise
expressly  provides,  no  amendment  of  the  Plan  shall  affect  the  terms  of  any  Award  outstanding  on  the  date  of  such
amendment.

16.2.

Termination  or  Amendment  of  Outstanding  Awards;  Assumptions.  Subject  to  the  limitations  contained  in
Section 16.3 below, including specifically the requirement of stockholder approval, if applicable, the Committee may at any
time:

(a)

amend the terms of any Award theretofore granted, prospectively or retroactively, provided that the

Award as amended is consistent with the terms of the Plan;

(b)

within  the  limitations  of  the  Plan,  modify,  extend  or  assume  outstanding  Awards  or  accept  the
cancellation of outstanding Awards or of outstanding stock options or other equity-based compensation awards granted by
another issuer in return for the grant of new Awards for the same or a different number of shares of Stock and on the same or
different terms and conditions (including but not limited to the exercise price of any Option); and

(c)

offer to buy out for a payment in cash or cash equivalents an Award previously granted or authorize
the recipient of an Award to elect to cash out an Award previously granted, in either case at such time and based upon such
terms and conditions as the Committee shall establish.

16.3.

Limitations on Amendments, Etc.

(a)

Without the approval of the Company’s stockholders, no amendment or modification of the Plan by
the Committee may (i) change the description of the persons eligible for Awards or (ii) effect any other change for which
stockholder approval is required by law or the rules of any relevant stock exchange.  Awards may be made under the Plan
that involve shares of Stock in excess of the number of shares then available for issuance under the Plan, provided no shares
shall actually be issued pursuant to those Awards until the number of shares of Stock available for issuance under the Plan is
sufficiently increased by an amendment of the Plan authorizing such increase.

(b)

No action by the Board or the Committee pursuant to this Section 16 shall impair the rights of the
recipient  of  any  Award  outstanding  on  the  date  of  such  amendment  or  modification  of  such  Award,  as  the  case  may  be,
without  the  Participant’s  consent;  provided,  however,  that  no  such  consent  shall  be  required  (A)  in  the  case  of  any
amendment  or  termination  of  any  outstanding  Award  that  is  permitted  by  any  provision  of  this  Plan  that  is  set  forth  in
Section 8, Section 9 or in any other section of this Plan that is not Section 16.2 or (B) if the Board or Committee, as the case
may  be,  (i)    determines  in  its  sole  discretion  and  prior  to  the  date  of  any  Change  of  Control  that  such  amendment  or
alteration either is required or advisable in order for the Company, the Plan or the Award to satisfy any law or regulation,
including without limitation the provisions of Section 409A of the Code, or to meet the requirements of or avoid adverse
financial accounting consequences under any accounting standard, (ii) determines in its sole discretion and prior to the date
of any Change of Control that such amendment or alteration is not reasonably likely to significantly diminish the benefits
provided under the Award, or that any such diminution has been adequately compensated, or (iii) reasonably determines on
or  after  the  date  of  Change  of  Control  that  such  amendment  or  alteration  either  is  required  or  advisable  in  order  for  the
Company, the Plan or the Award to satisfy any law or regulation, including without limitation the provisions of Section 409A
of the Code.

- 18 -

17.

Recoupment

Participants shall be subject to any clawback, recoupment or other similar policy adopted by the Board as in effect
from time to time and Awards and any cash, shares of Stock or other property or amounts due, paid or issued to a Participant
shall be subject to the terms of such policy, as in effect from time to time.

18.

Notices and Other Communications

Any  communication  or  notice  required  or  permitted  to  be  given  under  the  Plan  shall  be  in  such  form  as  the
Committee may determine from time to time.  If a notice, demand, request or other communication is required or permitted
to  be  given  in  writing,  then  any  such  notice,  demand,  request  or  other  communication  hereunder  to  any  party  shall  be
deemed to be sufficient if contained in a written instrument delivered in person or duly sent by first class registered, certified
or  overnight  mail,  postage  prepaid,  or  by  facsimile  with  a  confirmation  copy  by  regular,  certified  or  overnight  mail,
addressed or by facsimile, as the case may be, (i) if to the recipient of an Award, at his or her residence address last filed
with the Company and (ii) if to the Company, at its principal place of business, addressed to the attention of its Treasurer, or
to  such  other  address  or  facsimile  number,  as  the  case  may  be,  as  the  addressee  may  have  designated  by  notice  to  the
addressor.  All such notices, requests, demands and other communications shall be deemed to have been received: (i) in the
case of personal delivery, on the date of such delivery; (ii) in the case of mailing, when received by the addressee; and (iii) in
the case of facsimile transmission, when confirmed by facsimile machine report.

19.

Stockholder Approval Not Required

It  is  expressly  intended  that  approval  of  the  Company’s  stockholders  not  be  required  as  a  condition  of  the
effectiveness  of  the  Plan,  and  the  Plan’s  provisions  shall  be  interpreted  in  a  manner  consistent  with  such  intent  for  all
purposes.  Specifically,  NASDAQ  Rule  5635(c)  generally  requires  stockholder  approval  for  equity  compensation  plans
adopted  by  companies  whose  securities  are  listed  on  the  NASDAQ  Stock  Market  that  provide  for  the  delivery  of  equity
securities to any employees, directors or other service providers of such companies as compensation for services. NASDAQ
Rule  5635(c)(4)  provides  an  exemption  in  certain  circumstances  for  employment  inducement  awards.  Notwithstanding
anything  to  the  contrary  herein,  in  accordance  with  NASDAQ  Rule  5635(c)(4),  Awards  may  only  be  granted  as  material
inducements  to  Eligible  Individuals  being  hired  or  rehired  as  employees,  as  applicable,  and  must  be  approved  by  (a)  the
Board, acting through a majority of the Company’s Independent Directors or (b) the independent Compensation Committee
of  the  Board.  Accordingly,  pursuant  to  NASDAQ  Rule  5635(c)(4),  the  issuance  of  Awards  and  the  Shares  issuable  upon
exercise or vesting of such Awards pursuant to the Plan is not subject to the approval of the Company’s stockholders.

20.

Governing Law

The Plan and all Award Agreements and actions taken hereunder and thereunder shall be governed, interpreted and

enforced in accordance with the laws of the State of Delaware, without regard to the conflict of laws principles thereof.

[End of document.]

- 19 -

RHYTHM PHARMACEUTICALS, INC.
2022 EMPLOYMENT INDUCEMENT PLAN

STOCK OPTION AGREEMENT

THIS  STOCK  OPTION  AGREEMENT,  dated  as  of  ______________,  20__  (this  “Agreement”),  is  between
Rhythm Pharmaceuticals, Inc., a corporation organized under the laws of the State of Delaware (the “Company”),
and  the  individual  identified  in  paragraph  1  below,  currently  residing  at  the  address  set  out  at  the  end  of  this
Agreement  (the  “Optionee”).    Capitalized  terms  used  in  this  Agreement  without  definition  shall  have  the
respective meaning ascribed to such capitalized terms in the Plan (as defined below).

1.

Grant of Option.  Pursuant and subject to the Company’s 2022 Employment Inducement Plan (as
the same may be amended from time to time, the “Plan”), the Company grants to you, the Optionee identified in
the table below, an option (the “Option”) to purchase from the Company all or any part of a total of the number of
shares identified in the table below (the “Optioned Shares”) of the common stock, par value $0.001 per share, in
the Company (the “Stock”), at the exercise price per share set out in the table below.

Optionee

Number of Shares

Exercise Price Per Share

Grant Date

Expiration Date

2.

Character  of  Option.    This  Option  is  not  intended  to  be  treated  as  an  “incentive  stock  option”

within the meaning of Section 422 of the Internal Revenue Code of 1986, as amended.

3.

Expiration of Option.   This  Option  shall  expire  at  5:00  p.m.  EST  on  the  Expiration  Date  or,  if

earlier, the earliest of the dates specified in whichever of the following applies:

a)

If the termination of your employment or other association is on account of your death or

disability, the first anniversary of the date your employment ends.

b)

If the termination of your employment or other association is due to any other reason, three

(3) months after your employment or other association ends.

4.

Exercise of Option.

a)

You may exercise this Option, in full or in part and at any time prior to the date this Option
expires, as to the number of Optioned Shares for which this Option shall have become exercisable (the “Vested
Shares”) pursuant Section 4(b) below.  However, during any period that this Option remains outstanding after the
end of your association with the Company

  
 
  
 
  
 
  
 
  
 
and its Affiliates in any and all capacities as an officer, director, employee and/or consultant of the Company and
its Affiliates, you may exercise it only to the extent of any remaining Vested Shares determined as of the effective
time of the end of such association.  The procedure for exercising this Option is described in Section 7.1(e) of the
Plan; provided that in no event shall a fraction of a share of Stock be purchasable or deliverable upon exercise.

[Vesting terms to be inserted]

b)

c)

Number of Shares
in Each
Installment

Initial Exercise Date
for Shares in Installment

5.

Transfer of Option.  You may not transfer this Option except by will or the laws of descent and

distribution, and, during your lifetime, only you may exercise this Option.

6.

Incorporation of Plan Terms.  This Option is granted subject to all of the applicable terms and
provisions  of  the  Plan,  including  but  not  limited  to  the  limitations  on  the  Company’s  obligation  to  deliver
Optioned Shares upon exercise set forth in Section 9 therein.

7.

Tax Consequences.  The Company makes no representation or warranty as to the tax treatment to
you of your receipt or exercise of this Option or upon your sale or other disposition of the Optioned Shares.  You
should rely on your own tax advisors for such advice.

8.

Treatment  as  Wages  or  Compensation.    No  amounts  paid  or  payable  in  connection  with  this
Option  shall  constitute  wages  or  compensation  for  purposes  of  any  applicable  law,  if  ever,  prior  to  the  date  on
which such amount has been earned, vested and become payable in accordance with the terms of this Agreement
and the Plan.  No such amount shall be treated as wages or compensation for purposes of any employee or other
benefit  plan  of  the  Company  and  its  Affiliates  except  to  the  extent  and  at  the  time  provided  in  the  respective
employee or other benefit plan.

9.

Acknowledgements.  You acknowledge that you have reviewed and understand the Plan and this
Agreement in their entirety, and have had an opportunity to obtain the advice of counsel prior to executing this
Agreement.   You    hereby  agree  to  accept  as  binding,  conclusive  and  final  all  decisions  or  interpretations  of  the
Committee upon any questions arising under the Plan or this Agreement.

10.

Further Assurances.  The parties agree to execute such further instruments and to take such action

as may reasonably be necessary to carry out the intent of this Agreement.

11.

Community  Property.    Without  prejudice  to  the  actual  rights  of  the  spouses  as  between  each
other, for all purposes of this Agreement, you shall be treated as agent and attorney-in-fact for that interest held or
claimed by your spouse with respect to this Option and any Optioned

- 2 -

Shares  and  the  parties  hereto  shall  act  in  all  matters  as  if  the  Optionee  was  the  sole  owner  of  this  Option  and
(following exercise) any such Optioned Shares.  This appointment is coupled with an interest and is irrevocable.

12. Miscellaneous.

a)

This Agreement shall be construed and enforced in accordance with the laws of the State of
Delaware,  without  regard  to  the  conflict  of  laws  principles  thereof  and  shall  be  binding  upon  and  inure  to  the
benefit  of  any  successor  or  assign  of  the  Company  and  any  executor,  administrator,  trustee,  guardian,  or  other
legal representative of you.  Capitalized terms used but not defined herein shall have the meaning assigned under
the Plan.  This Agreement may be executed in one or more counterparts all of which together shall constitute but
one instrument. In making proof of this Agreement it shall not be necessary to produce or account for more than
one such counterpart.

b)

The Option granted hereunder is intended to constitute an “employment inducement award”
under  NASDAQ  Rule  5635(c)(4)  that  is  exempt  from  the  requirements  of  shareholder  approval  of  equity
compensation plans under NASDAQ Rule 5635(c)(4). This Agreement and the terms and conditions of the option
granted hereunder will be interpreted consistent with such intent.

[The remainder of this page is intentionally left blank.  Signature page to follow.]

- 3 -

RHYTHM PHARMACEUTICALS, INC.
 2022 EMPLOYMENT INDUCEMENT PLAN

OPTION EXERCISE FORM

Rhythm Pharmaceuticals, Inc.
500 Boylston Street, 11th Floor
Boston, MA 02116

Attention:

Controller

Dear Sir:

In  accordance  with,  and  subject  to  the  terms  and  conditions  of,  the  Rhythm  Pharmaceuticals,  Inc.  2022
Employment  Inducement  Plan,  as  amended  and  in  effect  to  date,  I  hereby  elect  to  exercise  my  option  granted
under the agreement dated                        , to purchase                         shares of the common stock, par value
$0.001 per share, in Rhythm Pharmaceuticals, Inc. (the “Company”).

Enclosed herewith is payment to the Company in the amount of $                        in full payment of the

option price of $             per share, for said shares.

Sincerely yours,

Name:

RHYTHM PHARMACEUTICALS, INC.
2022 EMPLOYMENT INDUCEMENT PLAN

Restricted Stock Unit Agreement

Exhibit 10.5.2

This Restricted Stock Unit Agreement (this “Agreement”), dated as of ______________,
20__  (the  “Date  of  Grant”),  is  between  Rhythm  Pharmaceuticals,  Inc.,  a  corporation  organized
under  the  laws  of  the  State  of  Delaware  (the  “Company”)  and  ___________  (the  “Participant”).
  Capitalized  terms  used  in  this  Agreement  without  definition  shall  have  the  respective  meaning
ascribed  to  such  capitalized  terms  in  the  Rhythm  Pharmaceuticals,  Inc.  2022  Employment
Inducement Plan (as the same may be amended from time to time, the “Plan”).

1.

Grant of Restricted Stock Units.  Subject to the terms and conditions set forth in
this  Agreement  and  in  the  Plan,  the  Company  hereby  grants  the  Participant  ______  Restricted
Stock Units, subject to the restrictions set forth below and in the Plan (the “Stock Units”).  Each
Stock  Unit  represents  the  right  of  the  Participant  to  receive  a  share  of  common  stock  of  the
Company (“Stock”), an amount of cash based on the value of a share of Stock, or any combination
of the foregoing, as determined by the Committee, if and when the specified conditions are met in
Section 4 below, and on the applicable settlement date set forth in Section 6 below.

2.

No  Rights  Prior  to  Settlement.    Stock  Units  represent  hypothetical  shares  of
Stock, and not actual shares of Stock.  No shares of Stock shall be issued to the Participant at the
time the grant of the Stock Units is made, and the Participant shall not be, and shall not have any of
the  rights  or  privileges  of,  a  stockholder  of  the  Company  with  respect  to  any  Stock  Units.   The
Participant shall not have any interest in any fund or specific assets of the Company by reason of
this award.

3.

Employment Inducement Award.  The Stock Units are intended to constitute an
“employment  inducement  award”  under  NASDAQ  Rule  5635(c)(4)  that  is  exempt  from  the
requirements of stockholder approval of equity compensation plans under NASDAQ Rule 5635(c)
(4).  This Agreement and the terms and conditions of the Stock Units will be interpreted consistent
with such intent.

4.

Vesting.

a)

As  of  the  date  of  this  Agreement,  all  of  the  Stock  Units  shall  be  unvested

and subject to a Risk of Forfeiture pursuant to Section 5 below.

b)

Subject to the terms of this Section 4, the Stock Units shall vest ratably in a
series  of  four  (4)  equal  annual  installments,  with  the  first  of  such  annual  installments  becoming
vested on the first anniversary of the Date of Grant and an additional annual installment becoming
vested on that day of each year thereafter until the Stock Units have become fully vested, provided
that the Participant continues his or her employment or other association with the Company or one
of its Affiliates from the Date of Grant until any such applicable vesting date.  For purposes of this
Agreement, the term “Vesting Date” shall mean a date on which any or all of the Stock Units vest
in accordance with the provisions of this Section 4.

c)

The  vesting  of  the  Stock  Units  shall  be  cumulative,  but  shall  not  exceed
100%  of  the  Stock  Units.    If  the  foregoing  schedule  would  produce  fractional  Stock  Units,  the
number  of  Stock  Units  that  vest  shall  be  rounded  down  to  the  nearest  whole  Stock  Unit  and  the
fractional Stock Units will be accumulated so that the resulting whole Stock Units will be included
in the number of Stock Units that become vested on the last Vesting Date.

d)

Except  as  otherwise  provided  in  a  written  employment  agreement  or
severance agreement entered into by and between the Participant and the Company or an Affiliate
thereof, in the event of a Change of Control before all of the Stock Units vest in accordance with
Section  4(a)  above,  the  applicable  provisions  of  the  Plan  shall  apply  to  the  Stock  Units,  and  the
Committee may take such actions as it deems appropriate pursuant to the Plan.

e)

Those  Stock  Units  that  vest  pursuant  to  this  Section  4  or  pursuant  to  any
action taken by the Committee pursuant to the Plan shall become free from the Risk of Forfeiture
pursuant to Section 5 below.

5.

Termination  of  Stock  Units.    If  the  Participant  ceases  employment  or  other
association with the Company and its Affiliates for any reason before all of the Stock Units vest,
any unvested Stock Units shall automatically terminate and shall be forfeited as of the date of the
Participant’s termination of employment or other association.  No settlement or payment shall be
made with respect to any unvested Stock Units that terminate as described in this Section 4.

6.

Settlement of Stock Units and Tax Withholding.

a)

If a Stock Unit vests in accordance with the provisions of Section 4 above,
then,  subject  to  the  provisions  of  this  Section  6(a)  and  Sections  6(b),  6(c)  and  13  below,  the
Company shall issue to the Participant one share of Stock for such vested Stock Unit, or an amount
of cash based on the value of a share of Stock for each vested Stock Unit, or a combination of the
foregoing, as determined by the Committee, subject to applicable tax withholding obligations, as
soon  as  reasonably  practicable  after  the  Vesting  Date  applicable  to  such  vested  Stock  Unit.
 Notwithstanding anything express or implied in the foregoing provisions of this Section 6(a) to the
contrary, in no event shall settlement of a vested Stock Unit occur later than the fifteenth day of the
third  calendar  month  following  the  calendar  year  in  which  the  Vesting  Date  applicable  to  such
vested Stock Unit occurs, and in no event shall Participant be permitted, directly or indirectly, to
designate the calendar year of payment.

b)

All obligations of the Company under this Agreement shall be subject to the
right of the Company as set forth in the Plan to collect applicable federal, state, local, foreign or
other withholding taxes if, when, and to the extent required by law prior to the issuance of shares
of Stock or payment in cash.  The Company shall satisfy any applicable withholding requirement
with respect to the issuance of shares of Stock from proceeds of a same day or next-day sale of a
portion  of  the  shares  of  Stock  effected  by  the  Company’s  designated  broker;  the  Participant’s
acceptance of the Stock Units shall constitute the Participant’s authorization to the broker to effect
such  sale.    In  the  event  payment  is  to  be  made  in  a  form  other  than  shares  of  Stock,  then  the
Company  shall  collect  from  the  Participant  the  applicable  withholding  taxes  pursuant  to  such
procedures as the Company deems appropriate under the circumstances.

2

c)

The obligation of the Company to deliver Stock shall also be subject to the
condition that if at any time the Board shall determine in its discretion that the listing, registration
or qualification of any shares of Stock upon any securities exchange or under any state or federal
law, or the consent or approval of any governmental regulatory body is necessary or desirable as a
condition of, or in connection with, the issuance of such shares, such shares may not be issued in
whole or in part unless such listing, registration, qualification, consent or approval shall have been
effected or obtained free of any conditions not acceptable to the Board.  The issuance of shares of
Stock,  if  any,  to  the  Participant  pursuant  to  this  Agreement  is  subject  to  any  applicable  laws  or
regulations of the United States or of any state, municipality or other country having jurisdiction
thereof.

7.

No Stockholder Rights.  Neither the Participant, nor any person entitled to receive
Stock Units in the event of the Participant’s death, shall have any of the rights and privileges of a
stockholder with respect to shares of Stock, including voting or dividend rights, until such shares
of Stock have been issued upon settlement of Stock Units.  The Participant acknowledges that no
election under Section 83(b) of the Code is available with respect to Stock Units.

8.

Grant  Subject  to  Plan  Provisions.    This  grant  is  made  pursuant  to  the  Plan,  the
terms  of  which  are  incorporated  herein  by  reference,  and  in  all  respects  shall  be  interpreted  in
accordance with the Plan.  The grant and settlement of the Stock Units are subject to the provisions
of the Plan and to interpretations, regulations and determinations concerning the Plan established
from time to time by the Committee in accordance with the provisions of the Plan, including, but
not limited to, provisions pertaining to (a) rights and obligations with respect to withholding taxes,
(b) the registration, qualification or listing of the shares of Stock, (c) changes in capitalization of
the  Company  and  (d)  other  requirements  of  applicable  law.    The  Committee  shall  have  the
authority  to  interpret  and  construe  the  Stock  Units  pursuant  to  the  terms  of  the  Plan,  and  its
decisions shall be conclusive as to any questions arising hereunder.

9.

No Employment or Other Rights.  The grant of the Stock Units shall not confer
upon the Participant any right to be retained by or in the employ or service of the Company or any
Affiliate  and  shall  not  interfere  in  any  way  with  the  right  of  the  Company  or  any  Affiliate  to
terminate the Participant’s employment or other association with the Company and its Affiliates.
 The right of the Company and any Affiliate to terminate at will the Participant’s employment or
other association at any time for any reason is specifically reserved.

10.

Assignment and Transfers.  The Stock Units are not transferable, and shall not be
sold, transferred, pledged, assigned, or otherwise alienated or hypothecated, other than by will or
by the laws of descent and distribution.  This Agreement may be assigned by the Company without
the Participant’s consent.

11.

Governing Law; Counterparts.  This Agreement shall be construed and enforced
in  accordance  with  the  laws  of  the  State  of  Delaware,  without  regard  to  the  conflict  of  laws
principles  thereof.    This  Agreement  may  be  executed  in  one  or  more  counterparts  all  of  which
together  shall  constitute  but  one  instrument.    In  making  proof  of  this  Agreement  it  shall  not  be
necessary to produce or account for more than one such counterpart.

3

12.

Notice.    Any  notice  to  the  Company  provided  for  in  this  instrument  shall  be
addressed to the Company, at the Company’s principal place of business, addressed to the attention
of the Company’s Treasurer, and any notice to the Participant shall be addressed to such Participant
at  his  or  her  residence  address  last  filed  with  the  Company.    Any  notice  shall  be  delivered  in
accordance with Section 18 of the Plan.

13.

Application  of  Section  409A  of  the  Code.    This  Agreement  is  intended  to  be
exempt  from  or  otherwise  comply  with  the  provisions  of  Section  409A  of  the  Code.
  Notwithstanding  the  foregoing,  if  any  Stock  Units  constitute  “deferred  compensation”  under
Section 409A of the Code and such Stock Units become vested upon the Participant’s termination
of employment (or other association), settlement of such vested Stock Units shall be delayed for a
period of six (6) months after the Participant’s termination of employment (or other association) if
the  Participant  is  a  “specified  employee”  as  defined  under  Section  409A  of  the  Code  and  if
required  pursuant  to  Section  409A  of  the  Code.    If  settlement  of  any  Stock  Units  is  delayed  in
accordance with the foregoing provisions of this Section 13, such Stock Units shall be settled and
paid  within  thirty  (30)  days  after  the  date  that  is  six  (6)  months  following  the  Participant’s
termination  of  employment  (or  other  association).   To  the  extent  subject  to  Section  409A  of  the
Code, settlement of the Stock Units may only be made in a manner and upon an event permitted by
Section  409A  of  the  Code,  and  each  settlement  of  the  Stock  Units  shall  be  treated  as  a  separate
payment, and the right to a series of installment payments under the Stock Units shall be treated as
a  right  to  a  series  of  separate  payments.    In  no  event  shall  the  Participant,  directly  or  indirectly,
designate  the  calendar  year  of  payment.   The  Company  may  change  or  modify  the  terms  of  this
Agreement  without  the  Participant’s  consent  or  signature  if  the  Company  determines,  in  its  sole
discretion,  that  such  change  or  modification  is  necessary  for  purposes  of  compliance  with  or
exemption  from  the  requirements  of  Section  409A  of  the  Code  or  any  regulations  or  other
guidance issued thereunder.  Notwithstanding the previous sentence, the Company may also amend
the Plan or this Agreement or revoke the Stock Units to the extent permitted by the Plan.

[The remainder of this page is intentionally left blank.  Signature page to follow.]

4

In Witness Whereof, the parties have executed this Agreement as of the date first above

written.

RHYTHM PHARMACEUTICALS, INC.

FIRST_NAME LAST_NAME

By:
Signature

Title:

Participant’s Address:

Signature of Participant

:

ADDRESS_LINE_1
ADDRESS_LINE_2
CITY, STATE ZIPCODE

[Signature Page to Rhythm Pharmaceuticals, Inc. Restricted Stock Unit Agreement]

Summary of Non-Employee Director Compensation Policy

Under the Company’s non-employee director compensation policy, all non-employee directors will be paid an
annual  retainer  fee  of  $47,500  and  such  additional  fees  as  are  set  forth  in  the  following  table.  All  payments  will  be
made quarterly in arrears.

Exhibit 10.6

Non-Employee Director
Lead Director
Non-Executive Chair
Chairman of the audit committee
Member of the audit committee (other than chairman)
Chairman of the compensation committee
Member of the compensation committee (other than chairman)
Chairman of the governance and nominating committee
Member of the governance and nominating committee (other than chairman)

Annual Fee

35,000
30,000
20,000
10,000
15,000
7,500
10,000
5,000

$
$
$
$
$
$
$
$

Under the policy, each individual who is initially appointed or elected to the board of directors will be eligible
to receive an option to purchase up to 40,000 shares of our common stock under the 2017 Equity Incentive Plan on the
date he or she first becomes a non-employee director. These option grants will vest annually over a three-year period
from the date of grant, subject to continued service as a non-employee director through that vesting date. In addition,
on the date of the annual meeting of stockholders, each continuing non-employee director who has served on the board
of directors for a minimum of six months will be eligible to receive an option grant to purchase up to 20,000 shares of
our common stock, which will vest in full upon the earlier of the first anniversary of the date of grant or the date of the
next annual meeting of stockholders. The exercise price for each of these option grants will be equal to the fair market
value  of  our  common  stock  on  the  date  of  grant.  These  new  director  grants  and  annual  grants  will  be  subject  to
approval  by  our  board  of  directors  at  the  time  of  grant.  The  share  numbers  set  forth  herein  will  be  appropriately
adjusted for any split or recapitalization of the Company’s securities.

Exhibit 10.10

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

EXCLUSIVE LICENSE AGREEMENT

CONFIDENTIAL
Execution Copy

THIS EXCLUSIVE LICENSE AGREEMENT (this “Agreement”) effective as of December 3, 2021 (the
“Effective Date”), is entered into between Rhythm Pharmaceuticals Inc., a corporation organized under the laws
of Delaware (“Rhythm”), with a place of business at 222 Berkeley Street, 12th Floor, Boston, MA, USA, and
RareStone Group Ltd., a limited company registered in Grand Cayman (“RareStone”), with a place of business at
with its registered office at PO Box 472, 2nd Floor, Harbour Place, 103 South Church Street, George Town, Grand
Cayman KY1-1106.

BACKGROUND

A.

Rhythm has developed a compound known as IMCIVREE™ (setmelanotide) and owns or controls

certain patents, know-how and other intellectual property relating thereto; and

B.

RareStone and Rhythm wish to enter into an agreement whereby Rhythm will grant to RareStone,
and  RareStone  will  obtain,  certain  exclusive  rights  and  licenses  under  such  patents,  know-how  and  other
intellectual  property  to  research,  Develop,  and  Commercialize  IMCIVREE™  for  the  diagnosis,  treatment  or
prevention of conditions and diseases in humans in the greater China region, all on the terms and conditions set
forth herein and therein.

AGREEMENT

NOW, THEREFORE, in consideration of the foregoing premises and the mutual covenants herein
contained, and for other good and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the Parties hereby agree as follows:

1.

Definitions.  For the purposes of this Agreement, the following terms have the respective meanings 

set forth below, and grammatical variations of such terms have corresponding meanings:

1.1

“Accounting Standards” means, with respect to a Party, its Sublicensees, or any of their

respective Affiliates, generally accepted accounting principles (“GAAP”)  in the U.S.; in each case as consistently 
applied throughout the applicable Person.

1.2

“Affiliate” means, with respect to any Person, any other Person which directly or indirectly 
controls, is controlled by, or is under common control with, such Person.  A Person shall be regarded as in control 
of another Person if it owns, or directly or indirectly controls, fifty percent (50%) or more of the voting stock or 
other ownership interest of the other Person, or if it directly or indirectly possesses the power to direct or cause the 
direction of the management and policies of the other Person by any means whatsoever.

1.3

“API” means an active material that provides pharmacological activity in a pharmaceutical

or biologic product (excluding formulation components such as coatings, stabilizers, excipients or solvents,
adjuvants or controlled release technologies).

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

1.4

“Business Day” means any day, other than a Saturday or a Sunday, on which the banks in

New York, New York and Shanghai, China are open for business.

1.5

“Clinical Studies” means any human clinical study with respect to the Licensed Product.

1.6

“Combination Product” means a pharmaceutical product that includes the Licensed
Compound and at least one (1) additional API that is either co-formulated or administered through a single
formulation or sold together as a single product and invoiced as one product.

1.7

“Commercialization” means, with respect to the Licensed Product, any and all processes 

and activities directed to selling, offering for sale (including any application for marketing and pricing and 
reimbursement approvals), distributing, detailing, marketing, advertising, promoting, packaging, storing, 
transporting, distributing, importing, and other commercial exploitation activities; provided, however, that 
Commercialization shall exclude Development and Manufacturing.  “Commercialize” and “Commercializing” 
shall have their correlative meanings.

1.8

“Commercially Reasonable Efforts” means, with respect to a Party’s Development or

Commercialization of Licensed Product, that level of efforts and resources commonly dedicated in the
pharmaceutical industry to the analogous development or commercialization activities of a product of similar
commercial potential at a similar stage in its lifecycle, in each case, taking into account market potential and
market size, issues of safety and efficacy, anticipated or actual product labeling, the competitiveness of alternative
Third Party product in the marketplace, the nature and extent of expected and actual market exclusivity (patent
protection and regulatory coverage), the expected and actual reimbursability, and pricing and product profile, the
proprietary position, the then-current competitive environment for such product and the likely timing of such
product’s entry into the market, the regulatory environment and status of such product, and other relevant
scientific, technical and commercial factors, in each case, as measured by the facts and circumstances at the time
such efforts are due.

1.9

“Compliance Laws” means all applicable Laws in the RareStone Territory or the Rhythm
Territory relating to (a) the prevention of bribery, corruption, fraud, or improper payments, money laundering or
counter-terrorist financing, including the U.S. Foreign Corrupt Practices Act of 1977 (the “FCPA”), or (b) export
controls, economic or financial sanctions or trade embargoes imposed, administered or enforced from time to time
by any Governmental Authority.

1.10

“Competing Product” means any product, other than Licensed Product, that [***].

1.11

“Control” (including any variations such as “Controlled” and “Controlling”), in the context

of intellectual property rights, data, Registrations and/or other information or assets, means that such Party or its
Affiliate owns or possesses rights to such

2

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

intellectual property rights, data, Registrations and/or other information or assets, as applicable, sufficient to grant
the applicable license or sublicense under this Agreement, without violating the terms of an agreement with a
Third Party.

1.12

“CTA” means a Clinical Trial Authorization application filed with the NMPA for

authorization to commence Clinical Studies.

1.13

“Data” mean any and all pharmacology data, preclinical data, clinical data, including raw

data, as well as marketing, market access, pharmacovigilance and other data pertaining to the Licensed Product, in
each case to the extent Controlled by a Party as of the Effective Date or during the Term of this Agreement.

1.14

“Development” means pre-clinical and clinical research and drug development activities, 

including but not limited to toxicology, pharmacology, statistical analysis, Clinical Studies (including pre- and 
post-approval studies), regulatory affairs, and regulatory activities pertaining to designing and carrying out 
Clinical Studies and obtaining Registrations; provided, however, that Development shall exclude Manufacturing 
and Commercialization.  “Develop” and “Developing” shall have their correlative meanings.

1.15

“Distributor” means a Third Party whom RareStone, its Affiliates or a Sublicensee engages

to offer for sale, sell and/or import Licensed Products purchased from RareStone, such Affiliate or such
Sublicensee, as applicable, for resale by such Third Party under the label of RareStone, such Affiliate or such
Sublicensee, as applicable (provided, however, that such resale may be under the label of such Third Party in a
jurisdiction if a local entity is required to obtain a label in such jurisdiction); provided that the term “Distributor”
shall not include any person or entity who pays RareStone, its Affiliate or a Sublicensee any consideration (in any
form) with respect to such engagement other than the consideration paid for the purchase of such Licensed
Products, such person or entity being deemed a Sublicensee hereunder.

1.16

“Drug Product” means the formulation of the Licensed Compound approved by the

applicable Regulatory Authority including Setmelanotide and any excipients, agents, and non-active ingredients,
in any formulation or dosage form.

1.17

“Drug Substance” means Setmelanotide.

1.18

“FDA” means the United States Food and Drug Administration, or any successor entity

thereto.

1.19

“Field” means the diagnosis, treatment or prevention of conditions and diseases in humans.

1.20

“First Commercial Sale” means the first sale of Licensed Product in the RareStone Territory

by any of RareStone, its Sublicensees or its or their respective Affiliates to a Third Party after Registration (if
required) of Licensed Product.

3

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

1.21

“Generic Product” means a prescription pharmaceutical product sold by a Third Party that

[***].

1.22

“Global Phase III Clinical Trial” means Rhythm’s multi-site, multi-national Phase III
Clinical Trial anticipated by the Parties to be the basis of a Registration, as further described in the Clinical
Development Plan.

1.23

“Governmental Authority” means any (a) nation, state, commonwealth, province, territory,

county, municipality, district or other jurisdiction of any nature; (b) international, multinational, federal, state,
local, municipal, foreign or other government, agency or authority; or (c) governmental or quasi-governmental
authority of any nature (including any governmental division, department, agency, commission, securities
exchange or instrumentality and any court or other tribunal).

1.24

“Joint Development Committee” or “JDC” means the joint development committee

comprising representatives of Rhythm and RareStone, described in Section 6.

1.25

“Joint Steering Committee” or “JSC” means the joint steering committee, comprising

representatives of Rhythm and RareStone, described in Section 6.

1.26

“Know-How” means all inventions, discoveries, data, information (including scientific,

technical or regulatory information), trade secrets, processes, means, methods, practices, formulae, instructions,
procedures, techniques, materials, technology, results, analyses, designs, drawings, computer programs,
apparatuses, specifications, technical assistance, laboratory, pre-clinical and clinical data (including laboratory
notes and notebooks), and other material or know-how, in written, electronic or any other form, whether or not
confidential, proprietary or patentable, including without limitation: development technology; biology, chemistry,
pharmacology, toxicology, drug stability, manufacturing and formulation, test procedures, synthesis, purification
and isolation techniques, quality control data and information, methodologies and techniques; information
regarding clinical and non-clinical safety and efficacy studies, including study designs and protocols, marketing
studies, absorption, distribution, metabolism and excretion studies; assays and biological methodology.

1.27

“Knowledge of Rhythm” or “Rhythm’s Knowledge” means the actual knowledge of any of

[***].

1.28

 “Laws” or “Law” means any applicable federal, national, supranational, state, provincial,

local or other domestic or foreign law, statute, treaty, rule, regulation, order, directive, ordinance, interpretation, or
policy (including any Governmental Authority written guidance for industry) with or by, or any other requirement
issued, enacted, adopted, promulgated, implemented or otherwise put into effect by or under the authority of any
Governmental Authority that apply to a Party and its activities hereunder.

1.29

“Licensed Compound” means the acetate salt form of Setmelanotide and the chloride salt

form of Setmelanotide.

4

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

1.30

“Licensed IP Rights” means the Licensed Patents, the Licensed Marks and the Licensed

Know-How.

1.31

“Licensed Know-How” means any Know-How Controlled by Rhythm or its Affiliates as of

the Effective Date or during the Term thereof that is necessary or reasonably useful to Develop, Manufacture, or
Commercialize the Licensed Product in the Field in the RareStone Territory.

1.32

“Licensed Marks” means the product-specific Trademarks Controlled by Rhythm or any of

its Affiliates as of the Effective Date and intended for use in connection with the packaging and labeling of
Licensed Product, as listed on Exhibit A, any other product-specific Trademarks Controlled by Rhythm or any of
its Affiliates after the Effective Date and intended for use in connection with the packaging and labeling of
Licensed Product, which are accepted in writing by RareStone for use in the RareStone Territory (which shall be
added to Exhibit A promptly after such acceptance), and any other product-specific Trademarks that Rhythm and
RareStone mutually agree upon for use with the Licensed Product in the RareStone Territory during the Term of
this Agreement.

1.33

“Licensed Patents” means any and all Patents Controlled by Rhythm or its Affiliates as of

the Effective Date or during the Term that claim inventions that are necessary or reasonably useful to Develop,
Manufacture or Commercialize the Licensed Product in the Field in the RareStone Territory, including the Patents
listed on Exhibit B.

1.34

“Licensed Product” means any pharmaceutical product that contains the Licensed

Compound, including any Combination Products (excluding, for clarity, any Combination Products that include
any APIs claimed or covered by intellectual property rights Controlled by Rhythm, other than the Licensed
Compound).

1.35

“Licensed Technology” means the Licensed Patents and the Licensed Know-How.

1.36

“Manufacture” means activities directed to manufacturing, processing, packaging, labeling, 

filling, finishing, assembly, shipping, storage, or freight of any pharmaceutical or biologic product (or any 
components or process steps involving any product or any companion diagnostic), placebo, or comparator agent, 
as the case may be, including quality assurance and stability testing, characterization testing, quality control 
release testing of drug substance and drug product, quality assurance batch record review and release of product, 
process development, qualification, and validation, scale-up, pre-clinical, clinical, and commercial manufacture 
and analytic development, and product characterization; provided, however, that Manufacture shall exclude 
Development and Commercialization.  “Manufacturing” and “Manufactured” shall have their correlative 
meanings.

1.37

“Manufacturing Cost” means, with respect to the supply of Licensed Product by an

unaffiliated Third Party, the direct acquisition cost paid by Rhythm for such Licensed Product, and, with respect to
the supply of Licensed Product Manufactured directly by

5

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

Rhythm or its Affiliates, the fully burdened manufacturing costs applicable to the supply of the Licensed Product,
which manufacturing costs:  [***].

1.38

“Marketing Authorization Application” or “MAA” means any drug marketing authorization

or similar application, including all supplements and amendments thereto, filed with the NMPA or other
applicable Regulatory Authority, which is required to Commercialize the Licensed Product in the RareStone
Territory.

1.39

“NMPA” means the National Medical Products Administration of China (formerly known

as the China Food and Drug Administration (CFDA)), or any successor thereto.

1.40

“Net Sales” means the gross amounts invoiced by RareStone, its Sublicensees, or any of
their respective Affiliates (in each case, a “Selling Party”) for sales or other dispositions of Licensed Product to
Third Parties (other than another Selling Party, unless such Selling Party is the end user of the applicable Licensed
Product), less the following amounts actually incurred, allowed, paid and accrued:

(a)

(b)

(c)

(d)

(e)

(f)

(g)

[***];

[***];

[***];

[***];

[***];

[***]; and

[***];

provided that, in each case (a) through (g), (i) each such deduction is calculated in a manner consistent

with the Selling Party’s applicable Accounting Standards, consistently applied by the Selling Party, and (ii) each
such deduction is directly allocable to Licensed Product, or apportioned on a good faith, fair and equitable basis to
Licensed Product and other products of the Selling Party and its Affiliates such that Licensed Product does not
bear a disproportionate portion of such deductions, and (iii) no particular amount identified above shall be
deducted more than once in calculating Net Sales (i.e., no “double counting” of deductions).

For clarification, sale or other disposition of Licensed Product by a Selling Party to another Selling Party 
for resale by such other Selling Party to a Third Party (other than a Selling Party) shall not be deemed a sale for 
purposes of this definition of “Net Sales,” provided that the subsequent resale is included in the computation of 
Net Sales.  In the event of any sale or other disposition of Licensed Product for any consideration other than 
exclusively monetary consideration on bona fide arm’s-length terms (including any sale or other disposition of 
Licensed Product by a Selling Party to another Selling Party for end use by such other Selling

6

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

Party), then for purposes of calculating Net Sales under this Agreement, such Licensed Product shall be deemed to
have been sold exclusively for cash [***].

[***].

Net Sales for a Combination Product in the RareStone Territory will mean the gross amount attributable to

the Combination Product less the deductions set forth in clauses (a) – (g) above, to the extent applicable and
subject to the limitations set forth above, multiplied by [***]:

(a)

(b)

(c)

(d)

[***];

[***];

[***]; or

[***].

1.41

“Patent(s)” means any and all patents and patent applications of any kind, together with all
provisional applications, additions, divisions, continuations, continued prosecution applications, continuations-in-
part, substitutions, confirmations, validations, reissues, re-examinations, inter partes reviews, registrations, patent
term extensions, supplemental protection certificates, restoration and renewals of any of the foregoing in any
jurisdiction in the world.

1.42

“Party” means Rhythm or RareStone, individually; and “Parties” means Rhythm and

RareStone, collectively.

1.43

“Payment Period” means on a Region-by-Region basis, the period of time beginning on the

date of the First Commercial Sale of Licensed Product in such Region and ending upon the latest of (a)  the
expiration of the last to expire Licensed Patent in such Region having a Valid Claim that covers such Licensed
Product; (b) the loss of Regulatory Exclusivity for the Licensed Product in such Region; or (c) [***] following the
date of the First Commercial Sale of the first Licensed Product by RareStone, its Affiliates or Sublicensees in such
Region.

1.44

“Person” means any individual, partnership, firm, corporation, association, trust,

unincorporated organization or other entity, as well as any syndicate or group of any of the foregoing.

1.45

“Phase III Clinical Trial” means a pivotal clinical trial in humans performed to gain

evidence with statistical significance of the efficacy of a product in a target population, and to obtain expanded
evidence of safety for such product that is needed to evaluate the overall benefit-risk relationship of such product,
to form the basis for the filing for Registration and to provide an adequate basis for physician labeling, as further
described in 21 C.F.R. § 312.21(c), or its foreign equivalent (including any such clinical study in any country
other than the United States), regardless of whether such trial is labeled as a Phase III Clinical Trial.

7

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

1.46

“RareStone Product Know-How” means Know-How Controlled by RareStone that are

necessary or reasonably useful to Develop, Manufacture, or Commercialize the Licensed Product in the Field in
the RareStone Territory, but excluding the Licensed Know-How.

1.47

“RareStone Territory” means Greater China, including mainland China, Hong Kong, and

Macao.

1.48

“Region” means each of (a) People’s Republic of China, (b) Hong Kong Special

Administration Region, (c) Macau Special Administration Region, and (d) Taiwan, if incorporated into the
RareStone Territory by amendment.

1.49
RareStone Territory.

“Registered IP Rights” means the Licensed Patents and the Licensed Marks within the

1.50

“Registration” means, with respect to the Licensed Product in any country or jurisdiction, 

any and all registrations, licenses, permits or governmental approvals, certifications or clearances from any 
Regulatory Authority necessary, under applicable Law in a country or other jurisdiction, for the purchase, 
distribution, commercialization, manufacture, promotion, marketing or sale of the Licensed Product in any such 
country or jurisdiction.  “Register” or “Registering” shall have their correlative meanings.

“Regulatory Authority” means the NMPA or any other regulatory body with similar
regulatory authority within the RareStone Territory or in any jurisdiction outside the RareStone Territory.

1.51

1.52

“Regulatory Exclusivity” means any exclusive marketing rights or data exclusivity rights
conferred by any applicable Regulatory Authority in the RareStone Territory, other than an issued and unexpired
Patent, including any regulatory data protection exclusivity (including, where applicable, pediatric exclusivity
and/or orphan drug exclusivity) and/or any exclusivity afforded by restrictions on the granting by a Regulatory
Authority of regulatory approval to market a Generic Product in the RareStone Territory.

1.53

“Regulatory Filing” means any Marketing Authorization Application, or any other licenses,

applications, registrations, notifications, submissions and authorizations made to or received from a Regulatory
Authority in a jurisdiction necessary to obtain a Registration for the development, manufacture and/or
commercialization of a human pharmaceutical product, together with all amendments and supplements to any of
the foregoing.

1.54

“Rhythm Territory” means all countries in the world other than the RareStone Territory.

1.55

“Setmelanotide” means an 8-amino acid cyclic peptide, as further described in Exhibit C.

8

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

1.56

“Sublicense” means an agreement that directly or indirectly grants a sublicense, immunity
or other right under the Licensed Technology to Develop, Manufacture, Commercialize, or otherwise exploit the
Licensed Product, in the RareStone Territory, pursuant to Section 2.4.

1.57

“Sublicensee” means a RareStone Affiliate or a Third Party with whom RareStone has 
granted or otherwise entered into a Sublicense, provided such Sublicense has not expired or been terminated.  
Notwithstanding the foregoing, Sublicensees shall not include Distributors.

1.58

“Tax” or “Taxes” means any and all federal, state, local and foreign taxes, assessments and

other governmental charges, duties, impositions and liabilities that are specific to the sale of the Licensed
Products, including taxes based upon or measured by gross receipts, income, profits, sales, use and occupation,
and value added, ad valorem, transfer, franchise, and property taxes together with all interest, penalties and
additions imposed with respect to such amounts.

1.59

“Third Party” means any Person other than RareStone, Rhythm or their respective

Affiliates.

1.60

“Trademark” means all registered and unregistered trademarks, service marks, trade dress,

trade names, logos, insignias, domain names, symbols, designs, and combinations thereof.

1.61

“Upstream Agreements” means any assignment or license agreement between Rhythm and

a Third Party regarding the Licensed IP Rights, which includes, as of the Effective Date, [***].

1.62

“Valid Claim” means (a) a claim of an issued and unexpired Patent included within the
Licensed Patents, which has not been held permanently revoked, unenforceable, abandoned, permanently lost
through an interference or an opposition proceeding, or invalid by a final decision of a court or other
governmental agency of competent jurisdiction, unappealable or unappealed within the time allowed for appeal,
and which has not been admitted to be invalid or unenforceable through reissue or disclaimer or otherwise, or
(b) a pending claim of a pending patent application included within the Licensed Patents that (i) has been asserted
and continues to be prosecuted in good faith (provided, however, that if a claim of a pending patent application
has not issued within five (5) years after the earliest filing date from which such claim takes priority, such claim
shall no longer constitute a Valid Claim for the purposes of this Agreement from such 5th anniversary unless and
until a patent issues with such claim) and (ii) has not been abandoned or finally rejected without the possibility of
appeal or refiling.

9

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

2.

License Grant/Obligations.

2.1

Licenses

2.1.1 IP License.  Subject to the terms and conditions of this Agreement, Rhythm hereby 

grants to RareStone an exclusive (even as to Rhythm), sublicenseable (subject to Section 2.4), royalty-bearing 
license under the Licensed Technology to Develop, Manufacture (solely to the extent set forth in Section 4.4), 
Commercialize, and otherwise exploit Licensed Products, and to obtain and maintain Registrations, in each case 
solely in the Field for use in the RareStone Territory.

2.2

Access to Licensed Know-How.  Rhythm shall provide or make available to RareStone all 
Licensed Know-How that is necessary or reasonably useful for the Development and Registration of the Licensed 
Product and exists as of the Effective Date, which provision or access shall occur in a manner and following a 
reasonable schedule and plan agreed by the Parties.  During the Term of this Agreement, Rhythm shall provide or 
make available to RareStone additional Licensed Know-How that is necessary or reasonably useful for the 
Development or Registration of the Licensed Product, to the extent that such Licensed Know-How comes to 
Rhythm’s attention (or is reasonably requested by RareStone) and has not previously been provided or made 
available to RareStone.  Without limiting the generality of the foregoing, Rhythm shall provide RareStone with a 
copy of the M3 module of the clinical trial dossier for the Licensed Product (or such portions as RareStone 
reasonably requests), as well as all supporting data, within [***] after the Effective Date.

2.3

Right of Reference.  Subject to the terms and conditions of this Agreement, Rhythm hereby 
grants to RareStone an exclusive (including with respect to Rhythm), non-transferable (except in connection with 
a permitted assignment of this Agreement), right of reference under any and all Registrations and Regulatory 
Filings Controlled by Rhythm for the Licensed Product or its use, to Develop, obtain and maintain Registrations 
for, Manufacture (to the extent necessary in accordance with this Agreement), and Commercialize the Licensed 
Product in the RareStone Territory.  RareStone shall have the right to grant further rights of reference, through 
multiple tiers, to Third Parties and Affiliates.  Subject to the terms and conditions of this Agreement, RareStone 
hereby grants to Rhythm an exclusive (including with respect to RareStone), non-transferable (except in 
connection with a permitted assignment of this Agreement), right of reference under any and all Registrations and 
Regulatory Filings Controlled by RareStone for Licensed Product or its use, to Develop, obtain and maintain 
Registrations for, Manufacture, and Commercialize the Licensed Product outside the RareStone Territory.  
Rhythm shall have the right to grant further rights of reference, through multiple tiers, to Third Parties and 
Affiliates.

2.4

Sublicenses.

2.4.1 RareStone shall have the right, in accordance with this Section 2.4, to enter into a
Sublicense with: (a) its Affiliates, without Rhythm’s consent; or (b) a Third Party, with Rhythm’s express prior
written consent, for the purpose of Registering with Regulatory

10

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

Authorities, Developing, Manufacturing or Commercializing the Licensed Product in each case jointly with, or for 
the benefit of, RareStone.  RareStone may grant sublicenses hereunder to such Affiliates and Third Parties solely 
on the terms set forth in this Section 2.4.1 and Section 2.4.2 below.

2.4.2 Each Sublicense granted by RareStone pursuant to this Section 2.4 will be in writing 

and will be consistent with the relevant restrictions and limitations set forth in this Agreement.  No Sublicense 
will diminish, reduce or eliminate any obligation of either Party under this Agreement.  Any Sublicense entered 
into by RareStone pursuant to this Section 2.4 will contain the following provisions: (a) a requirement that such 
Sublicensee submit applicable sales or other reports to Rhythm consistent with the reporting requirements set 
forth in Section 7.7; (b) an audit requirement consistent with that set forth in Section 7.10; (c) a requirement that 
such Sublicensee comply with the confidentiality provisions and restrictions on use of Confidential Information 
contained in Article 9 with respect to Rhythm’s Confidential Information; and (d) those provisions required by the 
Upstream Agreements.  RareStone shall remain responsible for its obligations under this Agreement and will 
ensure that each of its Sublicensees complies with all relevant provisions of this Agreement.  Promptly following 
the execution of each Sublicense to a Sublicensee, RareStone shall provide Rhythm with an executed copy of such 
Sublicense; provided, however, that RareStone shall have the right to redact any confidential terms from the copy 
provided to Rhythm.

2.5

RareStone’s Right of First Negotiation.  If at any time during the Term of this Agreement, 

Rhythm desires to enter into negotiations with any Third Party for the grant of a license or rights to Develop or 
Commercialize the Licensed Product in the Field solely in Taiwan (“ROFN Territory”), then, prior to entering into
discussions or negotiations with any Third Party, Rhythm shall provide written notice to RareStone (“ROFN
Notice”) and offer to RareStone the first right to negotiate for the right or license to Develop or Commercialize the
Licensed Product in the Field in the ROFN Territory (“ROFN”).  RareStone shall have [***] after receiving the 
ROFN Notice to notify Rhythm in writing whether RareStone desires to exercise its ROFN.  If RareStone notifies 
Rhythm that RareStone elects to exercise its ROFN, the Parties shall enter into exclusive good faith negotiations 
for a period of [***] (the “Negotiation Period”) to include the ROFN Territory in the RareStone Territory, subject 
to mutual, written agreement of any financial consideration with respect to the ROFN Territory.  If the Negotiation 
Period expires before the Parties have mutually agreed on the terms and conditions to include the ROFN Territory 
under this Agreement, Rhythm will have no additional obligations to negotiate with RareStone and Rhythm shall 
be free to Develop and Commercialize Licensed Product in the ROFN Territory, directly or through an Affiliate or 
an agreement with a Third Party, provided that, for the six months immediately following the expiration of such 
Negotiation Period, Rhythm shall not enter into any such agreement with any Third Party on terms that are more 
favorable to the Third Party than the last terms offered to RareStone during the Negotiation Period.

2.6

Activities Outside the RareStone Territory.  To the extent permitted under applicable Law, 

RareStone agrees that neither it, nor any of its Affiliates, will sell or provide the Licensed Product to any Third 
Party and shall not allow its Sublicensees to sell or provide the

11

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

Licensed Product to any Third Party, if RareStone or its relevant Affiliate or Sublicensee knows, or has reason to
know, that Licensed Products sold or provided to such Third Party may be sold or transferred, directly or
indirectly, for use in the Rhythm Territory.

2.7

Competing Product Activities in the RareStone Territory.

2.7.1 Until [***], RareStone covenants that neither it nor its Affiliates or permitted 

Sublicensees will, (i) grant or offer any license or otherwise enable or authorize any Third Party or (ii) conduct, 
either directly or indirectly, any activities, whether independently or with or for the benefit of a Third Party, in 
each case of (i) and (ii) with respect to the Development (including to obtain or maintain any regulatory approvals 
for), Manufacture, Registration, or Commercialization of any Competing Product in the RareStone Territory.  On 
and after [***], in the event that RareStone or any of its Affiliates desires to (i) grant or offer any license or 
otherwise enable or authorize any Third Party or (ii) conduct, either directly or indirectly, any activities, whether 
independently or with or for the benefit of a Third Party, in each case of (i) and (ii) with respect to the 
Development (including to obtain or maintain any regulatory approvals for), Manufacture, Registration, or 
Commercialization of any Competing Product in the RareStone Territory, RareStone would so notify Rhythm in 
writing (a “Competing Product Notice”).  By written notice to RareStone provided within [***], Rhythm shall 
have the right to elect to receive a royalty on Net Sales by RareStone, its Affiliates and their respective 
(sub)licensees of such Competing Product in the RareStone Territory.  Rhythm shall have the right to receive up to 
a [***] royalty on such Net Sales, [***], as elected by Rhythm in such notice; provided, that the royalty payable 
under this Agreement with respect to Net Sales on Licensed Product in the RareStone Territory shall be decreased 
by a percentage equal to the percent rate selected by Rhythm with respect to such Competing Product.

2.7.2 Rhythm hereby covenants that, during the Term, neither it nor its Affiliates will, (i)

grant or offer any license or otherwise enable or authorize any Third Party or (ii) conduct, either directly or
indirectly, any activities, whether independently or with or for the benefit of a Third Party, in each case of (i) and
(ii) with respect to the development (including to obtain or maintain any regulatory approvals for), manufacture,
registration, promotion, advertisement or distribution of any Competing Product in the RareStone Territory.

2.8

Relevant In-Licensed IP.  In the event that, RareStone desires to in-license from a Third 
Party Patents that cover the Licensed Product, it shall so notify Rhythm in writing.  The Parties shall promptly 
confer in good faith with respect to the relevant Patents and discuss the need or desirability of taking a license 
thereto.  Rhythm shall have the first right to obtain such license to such Patents worldwide, and shall confer in 
good faith with RareStone regarding the terms and conditions thereof to the extent relevant to the RareStone 
Territory.  If Rhythm obtains a license to such Patents, Rhythm shall either obtain a license thereunder including 
the RareStone Territory on terms reasonably acceptable to RareStone, in which case RareStone shall be 
responsible for the portion of all payments due thereunder to the extent reasonably attributable to the RareStone 
Territory (in which case such payments borne by RareStone will be treated as if they were paid to a Third Party 
for purposes of Section 7.6.2), or otherwise Rhythm shall exclude from the scope of its license the RareStone 
Territory.  If either Rhythm declines to take a

12

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

license to such Third Party Patents, or excludes from any license it obtains under such Patents the RareStone 
Territory, then RareStone shall have the right to obtain such a license under such Patents solely for the RareStone 
Territory.  If Rhythm elects to take a license to Third Party Patents under this Section 2.8 that includes the 
RareStone Territory, Rhythm shall provide to RareStone notice thereof, and upon RareStone’s receipt of such 
notice (i) RareStone’s such Third Party Patents will be included in the Licensed Patents and licensed to RareStone 
pursuant to Section 2.1 automatically, and are hereby granted as of the date of RareStone’s receipt of such notice, 
and (ii) RareStone agrees to comply with any obligations of Rhythm under any such in-license agreement with 
respect to such Patents, that apply to RareStone and of which RareStone was informed in writing in advance by 
Rhythm, including any obligation to make payments for RareStone’s use of the same.

3.

Regulatory.

3.1

RareStone Diligence.  During the Term, RareStone shall use Commercially Reasonable 
Efforts (whether alone or with or through its Sublicensees and its or their respective Affiliates) to Develop and 
Register the Licensed Products in the Field in the RareStone Territory, including without limitation for each 
indication for which Rhythm is eligible to receive milestone payments pursuant to Sections 7.3, [***].

3.2

Regulatory Strategy.  RareStone shall be responsible for obtaining the initial Registration 

and any subsequent Registrations, as required, for the Licensed Product in the Field in the RareStone Territory 
[***].  RareStone shall develop and determine a regulatory strategy for the Licensed Product in the RareStone 
Territory, which strategy shall be subject to JSC’s review and approval.  The Parties initially agree as follows:

3.2.1 Rhythm shall initially hold any and all Regulatory Filings submitted to and

Registrations granted by the NMPA for the Licensed Product Manufactured by Rhythm (“Imported Version of
Product”) until the Manufacturing Process has been transferred to RareStone, pursuant to Section 4.4, (such date,
the “Regulatory Responsibility Transfer Date”), and Rhythm hereby designates RareStone as Rhythm’s regulatory
agent.

3.2.2 As Rhythm’s regulatory agent, RareStone or one of its Affiliates shall be

responsible for undertaking all regulatory activities and interactions with Regulatory Authorities in the RareStone
Territory for the Imported Version of Product in Rhythm’s name as the express and authorized regulatory agent of
record for Rhythm in the RareStone Territory.

3.2.3 Following the Regulatory Responsibility Transfer Date, RareStone or one of its

Affiliates will be responsible for all regulatory activities and interactions with the Regulatory Authorities in the
RareStone Territory leading up to and including obtaining (to the extent not already obtained) and thereafter
maintaining Registrations for such locally-Manufactured Licensed Product in the RareStone Territory, in
RareStone’s or its Affiliate’s own name.

13

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

3.3

RareStone Ownership.  Following the Regulatory Responsibility Transfer Date, RareStone 
shall own any and all Regulatory Filings and Registrations for the Licensed Product in the Field in the RareStone 
Territory.  Such Registrations shall be transferred to Rhythm in the circumstances set forth in Section 14.2.2.

3.4

Audit and Inspection.  RareStone shall permit Rhythm to review RareStone’s guidelines 

and procedures for (i) the receipt, investigation, recording, communication, and exchange (as between the Parties) 
of adverse event reports, pregnancy reports, and any other information concerning the safety of the Licensed 
Product (ii) the preparation, filing, prosecution, submission and control all Regulatory Filings for Licensed 
Product in the RareStone Territory and the communications with the NMPA and other Regulatory Authorities in 
the RareStone Territory regarding Regulatory Filings and Registration of Licensed Product.

3.5

Clinical Development Plan.

3.5.1 Promptly after the Effective Date, the Parties shall collaborate on a plan for the

clinical Development of the Licensed Product in the RareStone Territory, which may be amended from time to
time (the “Clinical Development Plan”).  An initial outline of the Clinical Development Plan is attached as Exhibit 
D.  The Parties shall use reasonable efforts to finalize and mutually agree on such Clinical Development Plan 
within [***] after the Effective Date.  The Clinical Development Plan will include in reasonable detail any 
Development activities, as required, and associated timelines, for the Licensed Product in the RareStone Territory, 
including the Global Phase III Clinical Trial.  Upon such mutual agreement, the Clinical Development Plan will 
be automatically added to Exhibit D to this Agreement.

3.5.2 The Parties shall prepare for the JDC’s review updates of the Clinical Development
Plan (as defined in Section 6.2.2(c)) for each year of the Term until Registration of the Licensed Product by or on
behalf of RareStone, and in any event, the JDC shall review the then-current Clinical Development Plan [***] (or
more frequently to address material issues arising within such time period) until such time.

3.5.3 The Parties hereby agree that all Development activities on the Licensed Product

conducted by RareStone in the RareStone Territory under this Agreement shall be conducted pursuant to the
Clinical Development Plan as reviewed and approved by the JDC.

3.6

Clinical Studies and Pre-Clinical Studies.

3.6.1 RareStone shall be responsible for conducting all activities in connection with the 

Global Phase III Clinical Trial, [***], solely to the extent such activities are necessary or reasonably useful to 
support Registration in the Field in the RareStone Territory.  Notwithstanding the foregoing, RareStone’s 
obligation to participate in such Global Phase III Clinical Trial in the RareStone Territory shall not exceed a 
maximum of [***] for such Global Phase III Clinical Trial, nor shall [***] to conduct activities in the RareStone 
Territory in connection with the Global Phase III Clinical Trial exceed [***].

14

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

3.6.2 As between the Parties, RareStone shall be responsible, [***], for conducting, to the
best of its ability, any and all Clinical Studies and/or preclinical studies (which may, in either case, require sites in
the RareStone Territory), and all other regulatory activities, required for obtaining, supporting and maintaining
Registrations in the RareStone Territory in accordance with the Clinical Development Plan.

3.6.3 Subject to the terms of this Agreement (including Section 3.6.1) and as between the

Parties, RareStone shall be solely responsible (with input from Rhythm both through the JSC and otherwise),
[***] for conducting all regulatory activities, whether pre-Registration or post-Registration of the locally-
Manufactured Licensed Product, required for obtaining and maintaining Registration in the RareStone Territory of
locally-Manufactured Licensed Product and in accordance with the Clinical Development Plan.

3.7

Regulatory Communications.

3.7.1 RareStone shall be responsible for and shall have the exclusive right, in consultation

with Rhythm and subject to Rhythm’s rights pursuant to Section 3.8, (a) to prepare, file, prosecute, submit and
control all Regulatory Filings for Licensed Product in the RareStone Territory; (b) to interact and communicate 
with the NMPA and other Regulatory Authorities in the RareStone Territory regarding Regulatory Filings and 
Registration of Licensed Product; (c) to collect information on the adverse effects of Licensed Product and report 
the same to the NMPA and other Regulatory Authorities in the RareStone Territory; and (d) to coordinate and 
control any recall of Licensed Product in accordance with this Agreement and applicable Laws and regulations 
and reporting relevant information to the NMPA and other Regulatory Authorities in the RareStone Territory.  
Subject to the terms and conditions of this Agreement, [***].

3.7.2 As between the Parties, Rhythm shall be responsible and shall have the exclusive

right to (a) to prepare, file, prosecute, submit and control all Regulatory Filings for Licensed Product in the
Rhythm Territory; (b) to interact and communicate with the applicable Regulatory Authority for Licensed Product
in such Rhythm Territory regarding Regulatory Filings and Registration of Licensed Product; (c) to collect
information on the adverse effects of Licensed Product and report the same to the applicable Regulatory
Authorities in the Rhythm Territory; and (d) to coordinate and control any recall of Licensed Product in
accordance with this Agreement and applicable Laws and regulations and reporting relevant information to the
applicable Regulatory Authorities in the Rhythm Territory.

3.8

Rhythm Review and Assistance.  Within [***] of the Effective Date, Rhythm shall provide 

to RareStone the then-existing dossier for the Licensed Product and any materials or documents Controlled by 
Rhythm as necessary or reasonably useful to RareStone or required by Regulatory Authorities for the Registration 
of the Licensed Product in the RareStone Territory.  Rhythm shall use Commercially Reasonable Efforts to 
execute such certificates and other instruments and documents readily available and its reasonable efforts to 
perform all such other acts as may be necessary or appropriate and otherwise cooperate with and provide 
reasonable assistance to RareStone as RareStone may request from time to time regarding any

15

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

Regulatory Filings or amendments to Registrations for Licensed Product, including qualifying a Third Party 
second source of Licensed Product to the extent required by applicable Laws and regulations, in all cases, [***].  
RareStone shall provide to Rhythm updates with respect to planned communications with Regulatory Authorities 
in the RareStone Territory, and submissions to such Regulatory Authorities, with respect to Licensed Products in 
the Field in the RareStone Territory.   Without limiting the foregoing, Rhythm shall translate all Regulatory 
Filings and supporting data, information and material for the Rhythm Territory that are not in English into English 
[***] and shall provide such English translations to RareStone.  RareStone shall be responsible, [***], to translate 
such data, information and material into Chinese as may be necessary to obtain and maintain Registrations in the 
RareStone Territory.  RareStone shall keep Rhythm fully and promptly informed as to its progress and activities 
relating to the Development and Registration, including with respect to regulatory matters and meetings with 
Regulatory Authorities, by way of updates to the JSC at its meetings or as reasonably requested by Rhythm at any 
other time.  RareStone agrees to consider in good faith all comments provided by Rhythm with respect to such 
Development and Registration of the Licensed Product for the RareStone Territory.

3.9

Pharmacovigilance.  Within [***] of the Effective Date, the Parties shall negotiate and enter 
into a pharmacovigilance and safety agreement regarding Licensed Product consistent with industry practices (the 
“Pharmacovigilance & Safety Agreement”) including: (a) providing detailed procedures regarding the 
maintenance of core safety information and the exchange of safety data relating to the Licensed Product within 
and outside the RareStone Territory within appropriate time frames and in an appropriate format to enable each 
Party to meet its expedited and periodic regulatory reporting requirements; and (b) ensuring compliance with the 
reporting requirements of all applicable Regulatory Authorities and all applicable legal and regulatory 
requirements for the management of safety data.  The Pharmacovigilance & Safety Agreement shall provide for 
an adverse event database to collect adverse event and complaint information of the Licensed Products in the 
RareStone Territory to be maintained by RareStone [***] and procedures to facilitate the consolidation of 
information in the global safety database maintained by Rhythm and to prepare reports for Regulatory Authorities.

4.

Supply of Licensed Product.

4.1

Supply Obligation.  Rhythm shall be responsible for supplying Licensed Product to 

RareStone to allow RareStone to conduct its Development and Commercialization activities in the RareStone 
Territory under this Agreement, as the Parties shall agree to in separate supply agreements.  Such supply shall 
either come from Rhythm, its Affiliates, or any of Rhythm’s contract manufacturers of Licensed Product (each a 
“CMO”). No later than [***] prior to the anticipated commencement of Clinical Studies to be conducted by
RareStone with respect to the Licensed Product, the Parties will negotiate and agree in good faith the terms of a
full, separate manufacturing and supply agreement, covering supplies of Product for the Clinical Studies in the
Territory (the “Clinical Supply Agreement”). No later than [***] prior to the anticipated date of obtaining
Registration for the Licensed Product in the RareStone Territory of the Licensed Product, the Parties will enter
into a new manufacturing and supply agreement, covering ordering and supplies for Commercialization activities
in the RareStone Territory (the

16

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

“Commercial Supply Agreement”). The Clinical Supply Agreement and Commercial Supply Agreement shall
provide specific terms and obligations concerning, among other things, forecasts, purchase orders, and supply of
Licensed Product for the RareStone Territory.

4.2

The transfer price [***] for Licensed Products by Rhythm will equal Rhythm’s 

Manufacturing Cost, and RareStone shall have the right to audit Rhythm’s books and records to verify the transfer 
price.  The applicable supply agreements will include supply for all of RareStone’s clinical and commercial 
requirements for Licensed Product prior to the receipt of the first approval by NMPA of the Licensed Product. 
Following the receipt of the first approval by NMPA, RareStone shall have the right to assume the license and 
rights to Manufacture Drug Product (but not the API or Drug Substance) for the Licensed Product, as further 
detailed in Section 4.4. In the event a Supply Failure, as defined in the applicable supply agreement, regarding the 
Licensed Product, RareStone shall have the right to assume the license and rights to Manufacture both the Drug 
Product and Drug Substance for the Licensed Product, as more fully detailed in the applicable supply agreement.

4.3

Quality Agreement.  Together with the Clinical Supply Agreement, RareStone and Rhythm 
shall negotiate (or Rhythm shall use reasonable efforts to cause its applicable CMO to negotiate) and enter into a 
commercially reasonable and customary quality agreement related to the supply of Licensed Product (or 
component thereof) within [***] after the Effective Date.

4.4 Manufacturing Technology Transfer.

4.4.1 Notwithstanding anything to the contrary in this Agreement, from and after the date

that is [***] after RareStone obtains Registration for the Licensed Product in the Territory, RareStone shall be
entitled to request and receive from Rhythm all (or a copy of all, as applicable) Licensed Know-How that is
reasonably necessary or useful for the Manufacture of Drug Product (but not the Manufacture of API or Drug
Substance) for the Licensed Product, including, for clarity, the then-current process for the Manufacture of such
Drug Product, as well as any improvements or enhancements to such processes, but excluding any Manufacturing
processes, activities, or steps for Manufacture of API or Drug Substance (the “Manufacturing Process”), and 
Rhythm shall provide such support as may be necessary or reasonably useful to RareStone or its designee to use 
and practice the Manufacturing Process in the RareStone Territory, including by assisting RareStone or its 
designee to enter into agreements with any or all of Rhythm’s CMOs and by waiving any exclusive arrangements 
Rhythm may have with such CMO in the RareStone Territory with respect to Licensed Compound and/or 
Licensed Product.  Rhythm shall provide all such Licensed Know-How in such time and in such manner as 
reasonably agreed by the Parties.

4.4.2 Within [***] following a request to transition Drug Product Manufacturing, Rhythm
shall develop and provide to RareStone a high-level plan describing the steps to be carried out in connection with
the transfer of the Manufacturing Process set forth in Section 4.4.1 (the “Technology Transfer”).  The Parties shall 
then cooperate to complete, within [***] of the delivery of such plan, the preparation of a reasonable 
implementation plan for a

17

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

Technology Transfer, with such plan to include (a) specific timelines and milestones that are consistent with 
completion of the Technology Transfer within [***] (exclusive of any lead time for delivery to RareStone of any 
equipment of the type used by Rhythm or its CMO to Manufacture the Licensed Product) of RareStone’s request, 
if any, for a Technology Transfer, and (b) a list of all equipment used by Rhythm or its CMO to Manufacture the 
Licensed Product, including a description of Rhythm’s source (i.e., whether internally developed or procured from 
a Third Party) for each piece of such equipment.  The Parties shall memorialize such implementation plan in a 
writing that is acknowledged by each Party.

5.

Commercialization.

5.1

Exclusive Supply to RareStone.  Rhythm, whether by itself or through an Affiliate or 

(sub)licensee, shall not, market, solicit orders for, sell, offer for sale, import, distribute, Commercialize or 
otherwise provide Licensed Product (a) to any Person in the RareStone Territory other than to RareStone or its 
designee or (b) to any Third Party if Rhythm, its relevant Affiliate or a (sub)licensee knows, or has reason to 
know, that Licensed Products sold or provided to such Third Party will be sold or transferred, directly or 
indirectly, for use in the RareStone Territory.  Rhythm shall not enter into any agreement with any Person that 
would conflict or interfere with the foregoing obligation.

5.2

RareStone Obligation.  RareStone shall use Commercially Reasonable Efforts (whether 
alone or with or through its Sublicensees and its or their respective Affiliates) to Commercialize the Licensed 
Product in the RareStone Territory, including without limitation for each indication for which Rhythm is eligible 
to receive milestone payments pursuant to Sections 7.3, [***].

5.3 Manner of Performance.  RareStone will perform its Commercialization obligations under 

this Agreement in good scientific manner and in compliance with all applicable Laws.

5.4

Commercialization Plan.

5.4.1 Within [***] after the date that is [***] before RareStone’s anticipated date of

Registration in the RareStone Territory, RareStone shall prepare a reasonably detailed plan, including the timing
of key activities, for the Commercialization of the Licensed Product in the Field in the RareStone Territory (the
“Commercialization Plan”), and the Commercialization Plan will be automatically added to Exhibit E to this
Agreement. From time to time, Rhythm will, through the JSC, provide RareStone with its then-current strategy
and high-level plan for Commercialization of the Licensed Product outside the RareStone Territory; provided, that
Rhythm shall not be obligated to create any documentation in order to comply with this Section 5.4.1.

5.4.2 RareStone shall provide the Commercialization Plan and Rhythm shall provide the
information described in Section 5.4.1 to the JSC for its review, but, for clarity, neither Party shall be required to
receive the JSC’s approval of the Commercialization Plan or

18

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

the information provided by Rhythm pursuant to Section 5.4.1, as applicable. RareStone shall prepare for the
JSC’s review updates of the Commercialization Plan (as defined in Section 6.1.2(b)) for each year until [***], and 
in any event, the JSC shall review the then-current Commercialization Plan in [***] (or more frequently as needed 
to address any material issues arising during such time period).  For clarity, RareStone shall not be required to 
obtain the JSC’s approval of any updates or amendments to the Commercialization Plan, although the JSC shall 
discuss any such updates or amendments in advance of their approval, and RareStone shall consider in good faith 
Rhythm’s comments thereon.

5.5

Pricing and Reimbursement.  Subject to any determination by applicable Regulatory 

Authorities, the pricing of the Licensed Products in the RareStone Territory shall be determined in accordance 
with Section 6.1.  RareStone shall solely be responsible for obtaining any pricing or reimbursement approvals for 
the Licensed Product in the RareStone Territory as required by the applicable Regulatory Authority.

5.6

Sales and Marketing.  RareStone shall be solely responsible, [***] for all 

Commercialization activities, including but not limited to training, compliance, promotion, marketing and medical 
affair activities, related to the Licensed Product in the RareStone Territory.  All promotion activities related to the 
Licensed Product in the RareStone Territory shall be consistent with the Commercialization Plan and shall comply 
with all applicable Law. RareStone shall coordinate with Rhythm regarding medical affairs activities to ensure 
global coordination of medical affairs activities and priorities.

5.7 Marketing Materials.  Visual aids, advertisements and promotional leaflets (the “Marketing

Materials”) concerning the Licensed Product for use in the RareStone Territory, as well as training manuals and
education and communication materials (the “Educational Materials”) for sales representatives in the RareStone 
Territory shall be developed and prepared by RareStone [***].  Any Marketing Materials, training manuals and/or 
Educational Materials developed and used by RareStone, its Affiliates and Sublicensees for the Licensed Product 
in the RareStone Territory shall be consistent with the Registration therein and the Commercialization Plan and 
shall comply with all applicable Laws.  RareStone shall keep Rhythm reasonably informed with respect to 
Marketing Materials and Educational Materials and shall provide to Rhythm copies (in electronic form) of any 
new Marketing Materials and/or Educational Materials for the Licensed Product developed by RareStone (and/or 
any of its Affiliates or Sublicensees) and any material changes to any such Marketing Materials and/or 
Educational Materials, and consider in good faith Rhythm’s reasonable comments, including with respect to the 
compliance with Rhythm’s worldwide Licensed Product profile and this Section 5.5.  Each Party shall have the 
right to use any Marketing Materials and Educational Materials developed by the other Party for 
Commercialization of the Licensed Product in the Field in its own territory.

5.8

Data Protection Laws.  The Parties shall comply with all data protection laws with respect 

to the collection, use, storage, processing sharing, transfer and disclosure of personal identifiable data or 
information, in each case applicable to such Party’s activities hereunder.

19

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

5.9

Diversion. Each Party hereby covenants and agrees that it and its Affiliates shall not, and it
shall contractually obligate (and use Commercially Reasonable Efforts to enforce such contractual obligation) its
licensees, sublicensees and contractors not to, directly or indirectly, actively promote, market, distribute, import,
sell or have sold any Licensed Product, including via the Internet or mail order, to any Third Party or to any
address or Internet Protocol address or the like in the other Party’s territory. Neither Party shall engage, nor permit
its Affiliates, sublicensees or contractors to engage, in any advertising or promotional activities relating to any
Licensed Product for use directed primarily to customers or other buyers or users of such product located in any
country, Region or jurisdiction in the other Party’s territory, or solicit orders from any prospective purchaser
located in any country, Region or jurisdiction in the other Party’s territory.

6.

Governance.

6.1

Joint Steering Committee.

6.1.1 Establishment.  Within [***] following the Effective Date, Rhythm and RareStone 

shall establish a JSC to facilitate the exchange of information, including clinical, regulatory, medical, 
pharmacovigilance, manufacturing, and commercial matters related to the Licensed Product, in the RareStone 
Territory, subject to the provisions of this Section 6.1.

6.1.2 Duties.  The JSC shall:

Licensed Product;

(a)

Facilitate communications and discussion between the Parties with respect to the

(b)

Review, discuss and coordinate the overall strategy and activities for the

Registration, Manufacturing, and Commercialization of Licensed Products in the RareStone Territory, including
related regulatory activities;

updates and other modifications thereto from time to time as provided for in this Agreement;

(c)

Review and discuss the Commercialization Plan and any substantive amendments,

set out in Section 6.1.5 below;

(d)

Provide a forum for resolving matters referred to the JSC pursuant to the procedures

disputes within the JDC; and

(e)

Oversee the activities of the JDC and attempt to resolve issues presented to it by and

by mutual written agreement of the Parties, except where in conflict with any provision of this Agreement.

(f)

Perform such other duties and responsibilities as are specifically assigned to the JSC

6.1.3 Membership.  The JSC shall be composed of an equal number of representatives 
from each of RareStone and Rhythm, selected by such Party.  Unless the Parties otherwise mutually agree, the 
exact number of representatives for each of RareStone and Rhythm

20

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

shall be, with respect to the JSC, [***].  Either Party may replace its respective JSC representatives at any time 
with prior written notice to the other Party; provided that the criteria for composition of the JSC set forth in the 
preceding sentence continues to be satisfied following any such replacement of a Party’s representative on the 
JSC.

6.1.4 Meetings.  The JSC shall meet at least twice each year, or at such other intervals as 
agreed to by the Parties or more frequently as necessary to resolve any issues submitted for JSC resolution by the 
JDC.  All JSC meetings may be conducted by telephone, video-conference or in person as determined by the JSC.  
[***].  With the consent of the Parties (not to be withheld unreasonably), other appropriate employee 
representatives of the Parties may attend the JSC meeting as non-voting observers, provided that such observers 
are subject to obligations of confidentiality substantially similar to the provision set forth in Article 9.

6.1.5 Decision-Making.

from each Party participating in any vote.

(a)

Decisions of the JSC shall be made by unanimous vote, with [***] representative

(b)

In the event that the JSC does not reach consensus with respect to a particular matter

within [***] after the matter is submitted to the JSC, then either Party may, by written notice to the other Party,
have such matter referred to (i) Rhythm’s Chief Executive Officer on the part of Rhythm and (ii) RareStone’s
Chief Executive Officer on the part of RareStone (collectively, “Senior Executives”) who shall meet promptly and
negotiate in good faith to attempt to resolve the dispute.

(c)

If, despite such good faith efforts, the Senior Executives are unable to resolve such

dispute during such meeting, then RareStone shall have the right to cast the deciding vote with respect to any such
matter; provided, that if such matter is with respect to the Development of the Licensed Product in the RareStone
Territory and would reasonably be likely to result in a material adverse risk to the Development or
Commercialization of the Licensed Product in the Rhythm Territory (as determined at Rhythm’s reasonable
discretion), Rhythm will have a veto right over such decision.

from any of its obligations specifically enumerated under this Agreement.

(d)

For clarity, neither Party shall have the right to cast a deciding vote to excuse itself

(e)

For additional clarity, the Senior Executive of RareStone will have final decision-

making authority with respect to any decisions solely related to Commercialization of the Licensed Product in the
RareStone Territory (including pricing).

6.2

Joint Development Committee.

shall establish a JDC to facilitate the Development and regulatory activities

6.2.1 Establishment.  Within [***] following the Effective Date, Rhythm and RareStone 

21

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

related to the Licensed Product, in the RareStone Territory, subject to the provisions of this Section 6.2.

6.2.2 Duties.  The JDC shall:

substantive amendments, updates and other modifications thereto, and oversee its implementation.

(a)

Review, discuss, and approve the Clinical Development Plan, including any

Review and discuss the regulatory strategy and any substantive amendments,
updates and other modifications thereto from time to time as provided for in this Agreement and oversee its
implementation;

(b)

Regulatory Plan; and

(c)

Provide periodic reports to the JSC regarding the Clinical Development Plan and

JDC by the JSC, except where in conflict with any provision of this Agreement.

(d)

Perform such other duties and responsibilities as are specifically assigned to the

6.2.3 Membership.  The JDC shall be composed of an equal number of representatives 

from each of RareStone and Rhythm, selected by such Party.  Unless the Parties otherwise agree, the exact 
number of representatives for each of RareStone and Rhythm shall be, with respect to the JDC, [***] 
representatives.  Either Party may replace its respective JDC representatives at any time with prior written notice 
to the other Party; provided that the criteria for composition of the JDC set forth in the preceding sentence 
continues to be satisfied following any such replacement of a Party’s representative on the JDC.

6.2.4 Meetings.  The JDC shall meet at least once per month prior to [***] of the 

Effective Date and at least once per Calendar Quarter thereafter, or at such other intervals as agreed to by the JSC.  
All JDC meetings may be conducted by telephone, video-conference or in person as determined by the JDC.  
[***].  With the consent of the Parties (not to be withheld unreasonably), other appropriate employee 
representatives of the Parties may attend the JDC meeting as non-voting observers.

6.2.5 Decision-Making.

(a)
participating in any vote.

Decisions of the JDC shall be made by unanimous vote, with [***] from each Party

(b)

In the event that the JDC does not reach consensus with respect to a particular

matter within [***] after the matter is submitted to the JDC, then either Party may, by written notice to the other
Party, have such matter referred to the JSC. Any particular matter referred to the JSC shall be subject to the
decision-making process of the JSC as set forth in Section 6.1.5.

22

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

from any of its obligations specifically enumerated under this Agreement.

(c)

For clarity, neither Party shall have the right to cast a deciding vote to excuse itself

6.3

Appointment of Alliance Managers.  Promptly following the Effective Date, each Party 
shall appoint a person to act as its alliance manager to coordinate its business activities under this Agreement 
(each such person, an “Alliance Manager”).  Each Party shall notify in writing the other Party as soon as 
practicable upon making, and changing, this appointment.  The Alliance Managers shall be the primary business 
contacts under this Agreement and are charged with ensuring a collaborative alliance environment to ensure 
timely development and Commercialization of Licensed Product in the RareStone Territory.  The Alliance 
Manager shall respond to all reasonable requests and other communications from the either Party and the JSC and 
shall address any other issues raised by the same regarding the management, exchange of information or conduct 
of the activities of the Parties under this Agreement.

6.4

Scope of Governance.  Notwithstanding the creation of the JSC and the JDC, each Party 

shall retain the rights, powers and discretion granted to it under this Agreement, and the JSC or the JDC shall not 
be delegated or vested with rights, powers or discretion unless such delegation or vesting is expressly provided 
herein, or the Parties expressly so agree in writing.  The JSC and the JDC shall not have the power to amend or 
modify this Agreement, and no decision of the JSC or JDC shall be in contravention of any terms and conditions 
of this Agreement.  The Alliance Managers shall not have any rights, powers or discretion, except as expressly 
granted to the Alliance Managers under this Agreement and in no event shall the Alliance Managers have any 
power to modify or amend this Agreement.  It is understood and agreed that issues to be formally decided by the 
JSC and JDC are only those specific issues that are expressly provided in this Agreement to be decided by the JSC 
and JDC.  It is also understood that the JSC and JDC shall not have any authority over activities related to the 
Development and/or Commercialization of the Licensed Product for use in the Rhythm Territory.

7.

Financial Terms.

7.1

Upfront Payment.  Within [***] after the Effective Date, RareStone shall pay to Rhythm an 

upfront fee of Seven Million ($7,000,000) USD in accordance with the payment provisions of Section 7.8.

7.2

Upfront Equity Issuance.  RareStone shall issue to Rhythm a total of (#) ordinary shares of 

equity, subject to a equity issuance agreement in the form attached hereto as Exhibit F (“Equity Agreement”)
within [***] after the Effective Date (“Initial Equity Shares”).  RareStone represents to Rhythm that, as of the 
Effective Date, the Initial Equity Shares are equivalent to Five Million ($5,000,000) USD.

7.3

NMPA Milestone Payments.  Within [***] calendar days following the first achievement of 

each of the following milestone events, RareStone shall give written notice thereof to Rhythm and shall pay to 
Rhythm the corresponding one-time, non-creditable, non-refundable milestone payments:

23

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

Milestone Event

[NMPA granting the Obesity due to suspected Biallelic POMC-, PCSK1-, or
LEPR-deficiency clinical trial waiver for the Licensed Product in mainland
China]

Milestone Payment

[Five Hundred Thousand
($500,000) USD]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

For the avoidance of doubt, under no circumstance shall RareStone be obligated to pay Rhythm more than an
aggregate [***] for regulatory approval by the NMPA, regardless of future gene approval indications.

7.4

FDA Milestone Payments.  Within [***] following the first achievement of each of the 
following milestone events, Rhythm shall give written notice thereof to RareStone, and RareStone shall pay to 
Rhythm the corresponding one-time, non-creditable, non-refundable milestone payments:

Milestone Event

Milestone Payment

[FDA approval of Licensed Product in the U.S. for Heterozygous PMOC or
PSCK1]

[Five Hundred Thousand
($500,000) USD]

[***]

[***]

[***]

[***]

[***]

[***]

24

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

Milestone Event

Milestone Payment

[***]

[***]

[***]

[***]

For the avoidance of doubt, under no circumstance shall RareStone be obligated to pay Rhythm more than

an aggregate [***] for regulatory approval by the FDA, regardless of future gene approval indications.

7.5

Sales Milestone Payments.  Within [***] following the end of the calendar year in which 

each of the following milestone events is first achieved, RareStone shall give written notice thereof to Rhythm and 
shall pay to Rhythm the corresponding one-time, non-creditable, non-refundable milestone payments:

Milestone Event

Milestone Payment

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

7.6

Royalties.

7.6.1 Subject to the terms and conditions of this Agreement, RareStone shall pay to

Rhythm, on a quarterly basis, royalties equal to the following percentage of Net Sales of the Licensed Product
during the applicable Payment Period, as calculated by multiplying the applicable sales royalty rate by the
corresponding amount of incremental Net Sales in the RareStone Territory (“Royalties”), as follows:

Aggregate Annual Net Sales

Sales Royalty Rate

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

25

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

7.6.2 If RareStone, its Sublicensees or its or their respective Affiliates is required to pay
royalties to any Third Party in order to make, have made, use, sell, offer to sale or import Licensed Product, then
RareStone shall have the right to credit [***] of such Third Party royalty payments against the Royalties owing to
Rhythm under this Section 7.6, provided however that such Royalties shall not be reduced by more than [***] by
reason of this Section 7.6.2.

7.6.3 On a Region-by-Region basis, upon the launch of the first (1st) Generic Product in

such Region, the applicable Royalties under this Section 7.6 for Licensed Product in such Region shall be reduced
by [***].

7.6.4 Notwithstanding the foregoing, during any calendar quarter in the Payment Period
for the Licensed Product in a Region in the RareStone Territory, the operation of Section 7.6.2 and Section 7.6.3,
individually or in combination, shall not reduce the final royalty rate to less than [***] of the royalty rate that
would have applied pursuant to Section 7.6.1 prior to any reduction, in each case, in such Region during such
calendar quarter.

7.7

Royalty Reports and Payments.  Within [***] after the end of each calendar quarter during 

the term of this Agreement, commencing with the calendar quarter in which the First Commercial Sale occurs, 
RareStone shall deliver to Rhythm a report setting forth its good faith estimates for such calendar quarter 
regarding the following information: (a) the calculation of applicable royalties, if any, which shall have accrued 
based upon sales in such calendar quarter; (b) the applicable withholding taxes, if any, required by law to be 
deducted with respect to such sales; and (c) the applicable exchange rate, if any, as determined below.  Within 
[***] after the end of after the end of each calendar quarter during the term of this Agreement, commencing with 
the calendar quarter in which the First Commercial Sale occurs, RareStone shall deliver to Rhythm an update to 
such estimate reflecting the final information set forth in (a) through (c).  No such reports or payments shall be 
due prior to the First Commercial Sale of the Licensed Product.  With respect to Net Sales received in a currency 
other than United States dollars, all amounts shall be expressed both in the currency in which the amount is 
invoiced (or received as applicable) and in the United States dollar equivalent.  The United States dollar 
equivalent shall be calculated using the average of the exchange rate (local currency per US$1) which corresponds 
to the rate for such currency reported in The Wall Street Journal, Internet U.S. Edition at www.wsj.com, as of the
last Business Day of each calendar month within such calendar quarter.

7.8

Payment Provisions.

7.8.1 The Royalty shown to have accrued by each report of final information provided for
under Section 7.7 shall be due on the date such report is due.  Payment of the Royalty in whole or in part may be 
made in advance of such due date.  If within [***] after the end of each calendar year RareStone identifies any 
amounts actually payable to Rhythm that have not been paid during such calendar year, RareStone shall make a 
reconciling payment to Rhythm as needed to give effect to the payments actually due to Rhythm for such calendar 
year.

26

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

7.8.2 All payments by RareStone to Rhythm hereunder shall be in United States dollars.  
If at any time legal restrictions prevent the prompt remittance of part or all of a Royalty payment hereunder with 
respect to the RareStone Territory, RareStone shall have the right, in its sole discretion, to make such payments by 
depositing the amount thereof in local currency (or in another currency selected by Rhythm, if feasible) to 
Rhythm’s account in a bank or other depository institution in the RareStone Territory.  RareStone shall provide 
prompt written notice to Rhythm of such legal restrictions, and the Parties shall cooperate to transfer such locally-
deposited amounts to Rhythm promptly after such legal restrictions are removed.  Notwithstanding the foregoing, 
in the event that RareStone fails to make [***] consecutive Royalty payments on time and in United States dollars 
due to such a legal restriction, Rhythm shall have the right to suspend RareStone’s Commercialization rights with 
respect to Licensed Products under this Agreement until such time as such legal restriction no longer prevents the 
prompt remittance of part or all of a Royalty payment hereunder with respect to the RareStone Territory.

7.8.3 Any payments or portions thereof due under this Agreement that are not paid by the 

date such payments are due under this Agreement or that have been deposited to a local account pursuant to 
Section 7.8.2 shall bear interest at a rate equal to [***].  This Section 7.8.3 shall in no way limit any other 
remedies available to the Parties.

7.8.4 Unless otherwise expressly stated in this Agreement, all amounts specified in this 
Agreement are in United States dollars, and all payments by one Party to the other Party under this Agreement 
shall be paid in United States Dollars.  If any currency conversion shall be required in connection with the 
payment of Royalties or other amounts under this Agreement, such conversion shall be calculated in accordance 
with Section 7.7.

7.9

Taxes

7.9.1 Withholding Taxes.  Payments made by RareStone to Rhythm pursuant to this 

Agreement shall not be reduced on account of any taxes.  For clarity, milestone and Royalty payments will be 
made at the fully-stated amounts.  In the event that RareStone assigns or otherwise transfers its rights or 
obligations under this Agreement to one of its Affiliates that is not resident for tax purposes in the Cayman 
Islands, or, after the Effective Date, changes its tax residence or the permanent establishment to which the rights 
under this Agreement are allocated, RareStone shall be responsible for such incremental tax withholding.

7.9.2 Sales Taxes.  Any sales taxes (including any consumption tax or value added tax), 

use tax, transfer taxes, duties or similar governmental charges required to be paid in connection with any 
payments by RareStone to Rhythm hereunder shall be as required by the applicable Law.  In the event that 
Rhythm is required to pay any such amounts, RareStone shall promptly remit payment to Rhythm of such 
amounts.

7.10 Records; Audits.  RareStone shall keep, and require its Affiliates and Sublicensees to keep, 
complete, true and accurate books of accounts and records for the purpose of determining the amounts payable to 
Rhythm pursuant to this Agreement.  Such books and

27

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

records shall be kept for [***] following the end of each calendar year to which they pertain.  Upon the written 
request of Rhythm and not more than once in each calendar year, RareStone shall permit an independent certified 
public accounting firm of nationally recognized standing selected by Rhythm and reasonably acceptable to 
RareStone [***], to have access during normal business hours to such of the financial records of RareStone, its 
Affiliates and Sublicensees, as may be reasonably necessary to verify the accuracy of the royalty reports 
hereunder for the [***] immediately prior to the date of such request (other than records for which Rhythm has 
already conducted an audit under this Section).  If such accounting firm concludes that additional amounts were 
owed during the audited period, RareStone shall pay such additional amounts within [***] after the date Rhythm 
delivers to RareStone such accounting firm’s written report so concluding, together with interest on such unpaid 
amounts at the rate set forth in Section 7.8.3 above.  The fees charged by such accounting firm shall be paid by 
Rhythm; provided, however, if the audit discloses a variation or error producing an underpayment in amounts 
payable exceeding [***] of the amount paid for a period covered by the audit is established, in which case 
RareStone shall pay all reasonable fees and expenses charged by such accounting firm for conducting the audit.  
Rhythm shall cause its accounting firm to retain all financial information subject to review under this Section 7.10 
in strict confidence; provided, however, that RareStone shall have the right to require that such accounting firm, 
prior to conducting such audit, enter into an appropriate non-disclosure agreement with RareStone regarding such 
financial information.  Rhythm shall treat all such financial information as RareStone’s confidential information, 
and shall not disclose such financial information to any Third Party or use it for any purpose other than as 
specified in this Section 7.10. Additionally, RareStone will allow the counterparties to the Upstream Agreements 
to conduct audit rights to the extent such counterparties have rights to conduct audits of sublicensees under the 
Upstream Agreements.

8.

Indemnification.

8.1

Indemnification of RareStone by Rhythm.  Subject to the provisions of this Section 8, 

Rhythm shall indemnify, defend and hold harmless RareStone, its Affiliates, and its and their respective officers, 
directors, agents, and representatives (the “RareStone Indemnitees”), from and against any and all losses,
liabilities, damages and expenses (including reasonable attorneys’ fees and costs) (collectively, “Losses”) incurred
by any RareStone Indemnitee resulting from any claim, demand, action or proceeding brought by any Third Party
(each a “Claim”) to the extent resulting from or arising out of:

of Rhythm, its licensee(s) for the Rhythm Territory, or their respective Affiliates, customers or end users;

8.1.1 the Development, use or Commercialization of the Licensed Product by or on behalf

Agreement; or

8.1.2  the breach of any representations, warranties or covenants of Rhythm in this

8.1.3 the negligence, gross negligence or willful misconduct of Rhythm, its Affiliates or

their respective agents or representatives in performing Rhythm’s obligations or exercising Rhythm’s rights under
this Agreement.

28

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

8.2

Indemnification of Rhythm by RareStone.  Subject to the provisions of this Section 8, 

RareStone shall indemnify and hold harmless Rhythm, its Affiliates, and its and their respective officers, directors, 
agents, and representatives (the “Rhythm Indemnitees”), from and against any and all Losses incurred by any
Rhythm Indemnitee resulting from any Claim to the extent resulting from or arising out of:

8.2.1 the Development, use or Commercialization of Licensed Product by or on behalf of

RareStone, its Sublicensee(s) for the RareStone Territory, or their respective Affiliates, customers or end users,
including any activities carried out by or on behalf of RareStone in its capacity as Rhythm’s regulatory agent
pursuant to Section 3.2, and except to the extent arising out of (a) the non-compliance by Rhythm of product
specifications set forth in the Supply Agreement or the Current Good Manufacturing Practice Regulations
enforced by the FDA (“cGMPs”); or (b) the actual or alleged infringement, misappropriation or other violation of
any intellectual property rights of a Third Party by the Licensed Product or use thereof or the use of the Licensed
Marks in accordance with this Agreement;

Agreement; or

8.2.2  the breach of any representations, warranties or covenants of RareStone in this

8.2.3  the negligence, gross negligence or willful misconduct of RareStone, its Affiliates

or their respective agents or representatives in performing RareStone’s obligations or exercising RareStone’s
rights under this Agreement.

8.3

Procedure.  A Party seeking indemnification (the “Indemnitee”) shall promptly notify the 
other Party (the “Indemnifying Party”) in writing of a Claim; provided that an Indemnitee’s failure to give such 
notice or delay in giving such notice shall not affect such Indemnitee’s right to indemnification under this 
Section 8 except to the extent that the Indemnifying Party has been prejudiced by such failure or delay.  The 
Indemnifying Party shall have the right to control the defense of all indemnification Claims hereunder.  The 
Indemnitee shall have the right to participate [***] in the Claim with counsel of its own choosing.  The 
Indemnifying Party shall consult with the Indemnitee in good faith with respect to all non-privileged aspects of 
the defense strategy.  The Indemnitee shall cooperate with the Indemnifying Party as reasonably requested, [***].  
The Indemnifying Party shall not settle any Claim without the Indemnitee’s prior written consent, which consent 
shall not be unreasonably withheld, conditioned or delayed.

8.4

No Consequential Damages.  NOTWITHSTANDING ANYTHING TO THE CONTRARY 

HEREIN, EXCEPT WITH RESPECT TO A BREACH OF SECTION 9 OR WITH RESPECT TO A PARTY’S 
OBLIGATIONS TO INDEMNIFY, DEFEND AND HOLD HARMLESS PURSUANT TO SECTION 8, 
NEITHER PARTY SHALL BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR 
CONSEQUENTIAL DAMAGES, WHETHER FORESEEABLE OR NOT, WHETHER IN CONTRACT, 
WARRANTY, TORT, NEGLIGENCE OR OTHERWISE, ARISING OUT OF THIS AGREEMENT OR THE 
EXERCISE OF ITS RIGHTS HEREUNDER, REGARDLESS OF ANY NOTICE OF SUCH DAMAGES.

29

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

9.

Confidentiality.

9.1

Confidential Information.  During the Term of this Agreement, and for a period of [***] 

following the expiration or earlier termination hereof, each Party shall maintain in confidence all information of 
the other Party that is disclosed by the other Party and identified as, or acknowledged to be, or that is by nature 
would reasonably be deemed, confidential at the time of disclosure (the “Confidential Information”), and shall not 
use, disclose or grant the use of the Confidential Information, except on a need-to-know basis to (a) those 
directors, officers, Affiliates, employees, licensees and sublicensees (with respect to Rhythm), permitted 
Sublicensees (with respect to RareStone), permitted actual or prospective assignees and agents, consultants, 
clinical investigators or contractors, to the extent such disclosure is reasonably necessary in connection with 
performing its obligations or exercising its rights under this Agreement or complying with applicable Laws.  For 
purposes of this Section 9.1, the Licensed Product and all uses thereof shall constitute the Confidential 
Information of both Parties.  To the extent that disclosure is authorized by this Agreement, prior to disclosure, the 
disclosing Party shall enter into a (or have already entered into an existing) written confidentiality agreement with 
any such Person as materially protective of such Confidential Information and the disclosing Party as this 
Section 9.  Each Party shall notify the other promptly upon discovery of any unauthorized use or disclosure of the 
other Party’s Confidential Information.

9.2

Terms of this Agreement.  Except as otherwise provided in this Section 9, neither Party 

shall disclose any terms or conditions of this Agreement to any Third Party without the prior consent of the other 
Party; provided, however, that a Party may disclose the terms or conditions of this Agreement, (a) on a need-to-
know basis to its legal and financial advisors to the extent such disclosure is reasonably necessary, (b) to a Third 
Party in connection with (i) an equity investment in or financing of such Party, (ii) a merger, consolidation or 
similar transaction by such Party, (iii)(A) with respect to Rhythm, an actual or potential licensee or sublicensee 
and (B) with respect to RareStone, an actual or bona fide prospective permitted Sublicensee, or (iv) the sale of all 
or substantially all of the assets of such Party, on a need to know basis, and in each case under appropriate 
confidentiality provisions substantially equivalent to those in this Agreement.

9.3

Permitted Disclosures.  The confidentiality obligations contained in this Section 9 shall not 

apply to the extent that (a) a Party is required (i)  to disclose Confidential Information or the terms of this 
Agreement by applicable Law, regulation, rule (including rule of a stock exchange or automated quotation 
system), order of a Governmental Authority or a court of competent jurisdiction or legal process, including tax 
authorities, or (ii) to disclose information to any Regulatory Authority for purposes of obtaining approval to test or 
market the Licensed Product, provided in either case that, to the extent practicable, such Party shall provide 
written notice thereof to the other Party and sufficient opportunity to object to or petition to limit any such 
disclosure or to request confidential treatment thereof; or (b) a Party can demonstrate that the Confidential 
Information (i) was public knowledge at the time of its disclosure or became public knowledge after its disclosure, 
other than as a result of actions of such Party in violation hereof; (ii) was already known to the receiving Party, 
other than under an obligation of confidentiality, at the time of disclosure; (iii) was developed by the receiving 
Party without use

30

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

of or reference to any Confidential Information of the disclosing Party or (iv) was disclosed to the receiving Party
on an unrestricted basis from a source unrelated to any Party to this Agreement and not under a duty of
confidentiality to the disclosing Party.

9.4

Injunctive Relief.  Each Party acknowledges that it will be impossible to measure in money 

the damage to the other Party if such Party fails to comply with the obligations imposed by this Section 9, and 
that, in the event of any such failure, the other Party may not have an adequate remedy at law or in damages.  
Accordingly, each Party agrees that injunctive relief or other equitable remedy, in addition to remedies at law or 
damages, is an appropriate remedy for any such failure and shall not oppose the granting of such relief on the 
basis that the disclosing Party has an adequate remedy at law.  Each Party agrees that it shall not seek, and agrees 
to waive any requirement for, the securing or posting of a bond in connection with the other Party seeking or 
obtaining such equitable relief.

9.5

Publication of Clinical Data.  Prior to publishing, publicly presenting and/or submitting for 
written or oral publication a manuscript, abstract or the like that includes Data from Clinical Studies with respect 
to the Licensed Product that has not previously published pursuant to this Section 9.5, RareStone shall provide 
Rhythm a copy thereof for its review and approval for [***] (unless RareStone is required by Law or regulation, 
including the rules of any applicable securities exchange, to publish such information sooner).  RareStone shall 
consider in good faith and integrate into such publication any reasonable comments provided by Rhythm during 
such [***] period.  In addition, RareStone shall, at the request of Rhythm, remove any Confidential Information 
of Rhythm therefrom, except RareStone shall have the right to publicly disclose any information, including 
Confidential Information, pertaining to safety of the Licensed Product that RareStone believes in good faith it is 
obligated or appropriate to disclose under applicable Law or applicable medical ethical guidelines.

9.6

Press Releases.  The Parties have agreed to a press release to be made on or after the 
Effective Date, set forth in Exhibit G.  No Party will release any other press release relating to the Licensed 
Product in the RareStone Territory without the prior written approval of the other Party.

9.7

Prior  Non-Disclosure  Agreements.    Upon  execution  of  this  Agreement,  the  terms  of  this
Section  9  shall  supersede  any  prior  non-disclosure,  secrecy,  or  confidentiality  agreement  between  the  Parties,
including  the  confidentiality  agreement  effective  between  the  Parties  dated  [***]  and  any  amendment  thereto.
 Any information disclosed under such prior agreements shall be deemed disclosed under this Agreement.

10.

Intellectual Property Rights.

10.1 Ownership of Inventions.

10.1.1 Inventorship of inventions, improvements, developments or discoveries, whether

patentable or non-patentable, invented or otherwise developed or generated by either Party or its Affiliates, or any
of its or their employees, sublicensees (where permitted),

31

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

independent contractors or agents during the Term, in the course of Developing, Manufacturing or
Commercializing any Licensed Product under this Agreement (“Inventions”), and any and all intellectual property
rights therein, will be determined based on the principles of inventorship in accordance with United States patent
Laws.

10.1.2 Any Invention made, conceived, reduced to practice, or otherwise discovered solely 

by the employees, independent contractors, or agents of Rhythm (“Rhythm Inventions”), and all intellectual 
property rights therein, will be solely owned by Rhythm. Any Invention made, conceived, reduced to practice, or 
otherwise discovered jointly by the employees, independent contractors, or agents of Rhythm and RareStone 
(“Joint Inventions”), and all intellectual property rights therein, will be solely owned by Rhythm.  All Rhythm 
Inventions and Joint Inventions, and any intellectual property rights therein, including any Patents disclosing such 
Rhythm Inventions and Joint Inventions, shall be automatically included in the Licensed Technology and 
Registered IP Rights, and shall be licensed to RareStone pursuant to Section 2.1.1.  Subject to the terms and 
conditions of this Agreement, Rhythm hereby grants to RareStone an irrevocable, perpetual, royalty-free, fully-
paid up, nonexclusive license under Rhythm’s interest in the Joint Inventions to Develop, Manufacture, 
Commercialize and otherwise exploit products that are claimed or covered by the Joint Inventions. Any Invention 
made, conceived, reduced to practice, or otherwise discovered solely by the employees, independent contractors, 
or agents of RareStone (“RareStone Inventions”), and all intellectual property rights therein, will be solely owned 
by RareStone. RareStone shall disclose in writing to Rhythm all RareStone Inventions promptly following the 
generation, conception, reduction to practice or other discovery thereof. RareStone hereby grants to Rhythm an 
irrevocable, perpetual, royalty-free, fully-paid up, exclusive license, with the right to grant sublicenses, under 
RareStone Inventions in the Rhythm Territory solely for the Development, Manufacture and Commercialization of 
Licensed Products.

10.1.3 RareStone shall, and shall cause its Sublicensees and Affiliates, and all contractors, 

employees, and agents, to cooperate with Rhythm and take all reasonable actions and execute such agreements, 
declarations, assignments, legal instruments and documents as may be reasonably required to perfect Rhythm’s 
right, title and interest in and to all Joint Inventions and all intellectual property rights therein.  Each Party will 
cause all employees of such Party who perform activities for such Party under this Agreement to be under an 
obligation to assign their rights in any Inventions, whether or not patentable, resulting therefrom to such Party so 
such Inventions shall be owned in accordance with Section 10.1.2. With respect to any activities of a Party under 
this Agreement that are contracted to a Person that is not an employee, the Party retaining such contractor will use 
Commercially Reasonable Efforts to include in the applicable contract an assignment to such Party of all rights in 
Patent Rights and Know-How made by such contractor resulting from such activities, and in any event will 
include in the applicable contract a license to such Party that is sublicensable to the other Party under this 
Agreement, of any Patent Rights and Know-How made by such contractor resulting from such activities.

32

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

10.2

Prosecution and Maintenance.

10.2.1 Except as otherwise set forth in Section 10.1, Rhythm shall have the sole right, 

[***], to prepare, file, prosecute and maintain the Registered IP Rights in the RareStone Territory.  Rhythm shall 
consider in good faith the interests of RareStone in so doing.  RareStone shall assist Rhythm, upon request and 
[***], and to the extent commercially reasonable, in connection therewith.  Rhythm shall (a) provide RareStone 
with any Licensed Mark application and patent application within the Registered IP Rights filed by Rhythm 
reasonably in advance of filing and receive and consider in good faith reasonable comments by RareStone 
thereon; (b) provide RareStone with any such Licensed Mark application and patent application filed by Rhythm 
promptly after such filing; (c) provide RareStone with copies of all material correspondence and communications 
received regarding the Registered IP Rights and consider in good faith reasonable comments by RareStone in 
connection therewith; (d) provide RareStone with copies of all material correspondence and communications sent 
regarding the Registered IP Rights; and (e) notify RareStone of any interference, opposition, reexamination 
request, nullity proceeding, appeal or other similar action filed for any Registered IP Right, review it with 
RareStone as reasonably requested, and receive and consider in good faith reasonable comments by RareStone 
thereon.

10.2.2 Rhythm shall not abandon any Licensed Patent in the RareStone Territory without 
providing to RareStone written notice thereof reasonably in advance of any such abandonment.  RareStone shall 
have the right to assume responsibility for prosecuting and maintaining such Licensed Patent by providing 
Rhythm written notice thereof within [***] after receipt of the notice to abandon, whereupon Rhythm shall assist 
RareStone, upon request and to the extent commercially reasonable, in connection with the continued prosecution 
and maintenance of such Licensed Patent, [***].

10.3

Enforcement and Defense.

10.3.1 Each Party shall promptly notify the other Party in writing of any actual or
threatened infringement, violation or misappropriation known to such Party of any Registered IP Rights or
Licensed Know-How in the RareStone Territory and shall provide the other Party with the available evidence, if
any, of such infringement, violation or misappropriation.

RareStone shall have the first right, but not the obligation, to initiate proceedings or take other appropriate action 
in the RareStone Territory, [***], to enforce the Registered IP Rights against any Third Party or to prevent, cease, 
and/or remedy any misappropriation, improper disclosure, or other misuse of the Licensed Know-How by any 
Third Party (collectively, “Enforcement Proceeding(s)”).  RareStone shall consider in good faith the interests of 
Rhythm in so doing.  If RareStone does not initiate proceedings or take other appropriate action within [***] of 
receipt of a request by Rhythm to initiate an Enforcement Proceeding, then Rhythm shall be entitled to initiate 
Enforcement Proceedings or take other appropriate action against such Third Party, [***], and to include 
RareStone as a nominal party plaintiff.  The Party conducting such Enforcement Proceeding shall have full control 
over its conduct, including settlement thereof;

33

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

provided, however, that the Party conducting such action may not settle any such action, or make any admissions 
or assert any position in such Enforcement Proceeding (other than an assertion of Patents), in a manner that would 
materially adversely affect the rights or interests of the other Party, without the prior written consent of the other 
Party, which shall not be unreasonably withheld, conditioned or delayed.  In any event, the Parties shall assist one 
another and cooperate in any such Enforcement Proceeding at the other’s reasonable request.

10.3.2 With respect to any Enforcement Proceeding, all monies recovered upon the final
judgment or settlement of any such Enforcement Proceeding shall be applied as follows: (a) first, to reimburse the
costs and expenses (including reasonable attorneys’ fees and costs) of RareStone and Rhythm; and (b) second, to
the Party prosecuting such Enforcement Proceeding.

10.4

Third Party Infringement Claims.  If the manufacture, sale or use of the Licensed 

Product in the RareStone Territory pursuant to this Agreement results in a claim, suit or proceeding alleging patent 
infringement against Rhythm or RareStone (or their respective Affiliates, licensees or Sublicensees) (collectively, 
“Infringement Actions”), such Party shall promptly notify the other Party hereto in writing.  Neither Party shall 
settle such Infringement Action, or make any admissions or assert any position in such Infringement Action, in a 
manner that would adversely affect the Licensed Product, the manufacture, use or sale or Commercialization of 
the Licensed Product, or Rhythm’s rights in the Licensed IP Rights, without the prior written consent of the other 
Party, which shall not be unreasonably withheld, conditioned or delayed.

10.5 Registration of License.  RareStone shall have the right to register or record its license 

under the Registered IP Rights with the relevant Governmental Authorities in the RareStone Territory to the extent 
that such registration or recordation is reasonably necessary in order for RareStone to carry out its obligations 
under this Agreement.  RareStone shall, [***], prepare and deliver to Rhythm such instruments and other 
documents reasonably necessary and in proper form for such registration.  The Parties shall reasonably agree on 
the form of documents to be used for such purpose, and shall cooperate to preserve confidentiality of this 
Agreement to the extent permitted under applicable Laws in the RareStone Territory.  Rhythm shall execute and 
return to RareStone such instruments and documents promptly after mutual agreement on the form and receipt 
thereof.

10.6 Upstream Agreements.  The Parties acknowledge that in exercising their rights and 

performing their obligations under Sections 10.2 and 10.3, they will give effect to the rights of the counterparties 
to, and the obligations of Rhythm under, the Upstream Agreements with respect to prosecution, maintenance and 
enforcement of Registered IP Rights or Licensed Know-How in the RareStone Territory.

34

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

11.

Trademarks.

11.1 Display.

11.1.1 Pursuant to the license in Section 11.2, RareStone shall have the right to display the
Licensed Marks, as listed in Exhibit B, on any and all packaging materials, labels and Marketing Materials for the
Licensed Product shall display the Licensed Marks.

11.1.2 The Licensed Product shall be sold in the RareStone Territory under the trade name 

of RareStone, provided, however that to the extent permissible under applicable Law within the RareStone 
Territory, such packaging materials, labels and Marketing Materials shall also display the trade name of Rhythm 
in reasonable size and prominence, as reasonably approved by Rhythm.  The trademarks of RareStone, trade 
dress, style of packaging and the like with respect to the Licensed Product in the RareStone Territory may be 
determined by RareStone in a manner that is consistent with RareStone’s standard trade dress and style.

11.2 Grant of License.  Rhythm hereby grants to RareStone an exclusive license to use the 

Licensed Marks and Rhythm’s trade name in the RareStone Territory in the Commercialization of the Licensed 
Product in accordance with this Agreement (the “Trademark License”).  The ownership and all goodwill from the 
use of the Licensed Marks and Rhythm’s trade name shall vest in and inure to the exclusive benefit of Rhythm.

11.3 Registration of Trademarks.  Rhythm (or its designee) shall be responsible for filing and 
registering [***] in its own name (to the extent permitted by applicable Law), appropriate registrations for such 
Licensed Marks in the RareStone Territory.

11.4 Approval of Packaging and Promotional Materials.  Without limiting Section 5.5 above, to 
preserve Rhythm’s legal rights in the Licensed Marks, RareStone shall submit representative Marketing Materials, 
packaging and Licensed Product displaying the Licensed Marks and/or Rhythm’s trade name to Rhythm for 
Rhythm’s review and approval, not to be unreasonably withheld, conditioned or delayed, prior to the first use of 
such Marketing Materials, packaging or Licensed Product and prior to any subsequent change or addition to such 
Marketing Materials, packaging or Licensed Product; provided that if Rhythm has not responded within [***] 
after the submission of such Marketing Materials, packaging or Licensed Product, Rhythm’s approval will be 
deemed to have been received.

11.5

Termination of Trademark License.  RareStone’s right to use the Licensed Marks and the 
Rhythm trade name shall terminate in the RareStone Territory upon termination or expiration of the Trademark 
License.  RareStone shall take all such steps as Rhythm may reasonably request to give effect to the termination of 
the license to the Licensed Marks and Rhythm trade name in the RareStone Territory and to record any documents 
that may be required to evidence the termination of such license and transfer to Rhythm of all rights, registrations, 
recordations and the like for such Licensed Marks.

35

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

11.6 Domain Names.  The Parties shall discuss in good faith and agree upon how to handle 

domain names containing the Licensed Marks.

12.

Representations and Warranties.

12.1 Mutual Representations and Warranties.  Each Party represents and warrants to the other 

Party as follows:

of the jurisdiction in which it is organized.

12.1.1 Such Party is duly organized, validly existing and in good standing under the laws

12.1.2 Such Party (a) has the requisite power and authority and the legal right to enter into 

this Agreement and to perform its obligations hereunder; and (b) has taken all requisite action on its part to 
authorize the execution and delivery of this Agreement and the performance of its obligations hereunder.  This 
Agreement has been duly executed and delivered on behalf of such Party, and constitutes a legal, valid, binding 
obligation, enforceable against such Party in accordance with its terms.

12.1.3 All necessary consents, approvals and authorizations of all Governmental

Authorities and other persons or entities required to be obtained by such Party in connection with this Agreement
have been obtained.

12.1.4 The execution and delivery of this Agreement and the performance of such Party’s

obligations hereunder (a) do not and will not conflict with or violate any requirement of applicable Laws,
regulations or orders of governmental bodies; and (b) do not and will not conflict with, or constitute a default
under, any contractual obligation of such Party.

12.1.5 As of the Effective Date, there is no action or proceeding pending against such Party

that questions in any material respect the validity of this Agreement or any action taken by such Party in
connection with the execution of this Agreement.

12.1.6 The operation of the business of such Party and its Affiliates is being, and has been, 
conducted in compliance with all applicable Laws, including Compliance Laws.  Neither such Party nor any of its 
Affiliates has received any written notice to the effect that the operation of the business of such Party or its 
Affiliates is not, and was not, in material compliance with any such applicable Laws, including Compliance Laws.

12.1.7 Such Party, its Affiliates and other Third Parties acting on such Party’s or its 
Affiliates’ behalf, has instituted and maintained policies and procedures designed to promote and achieve 
compliance with all applicable Compliance Laws.  None of such Party, its Affiliates or any of their respective 
managing directors or employees, or, to such Party’s knowledge, any of their respective Third Party 
representatives, partners or other Third Parties acting on such Party’s or its Affiliates’ behalf, has, (a) engaged in 
any conduct that would reasonably be expected to result in any of such Party, its Affiliates or any of their 
respective officers, managing directors, Third Party representatives or partners being subject to the

36

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

application of sanctions or other adverse consequences under Compliance Laws; (b) directly or indirectly, taken
any action in violation of any Compliance Law; or (c) received notice of, or is otherwise aware of, any judicial or
administrative proceedings involving a noncompliance with Compliance Laws.

12.1.8 None of such Party, its Affiliates or, to such Party’s knowledge, its Sublicensees (in

the case of RareStone) or licensees (in the case of Rhythm), or any of their respective managing directors or
employees or, to such Party’s knowledge, any of their respective Third Party representatives, partners or other
Third Parties acting on behalf of such Party, its Affiliates or its Sublicensees (or licensees, as applicable), has,
directly or indirectly, (a) taken any action in violation of Compliance Laws; (b) made, offered, authorized,
facilitated, or promised any payment, contribution, gift, entertainment, bribe, rebate, kickback, financial or other
advantage, or anything else of value, regardless of form or amount, to any Person in order to obtain an improper
advantage, induce the recipient to violate an official or lawful duty, reward the recipient for an improper
advantage already given, or for any other improper purpose, even if the payment, gift or hospitality was given to
such person without an intent that it would act improperly; (c) requested, agreed to receive, or accepted a
payment, gift or hospitality from a Third Party if it was known or suspected that such payment, gift or hospitality
was offered with the expectation that it will obtain a business advantage for the offeror; (d) established or
maintained, or is maintaining, any unlawful fund of corporate monies or properties; (e) used or is using any
corporate funds for any illegal contributions, gifts, entertainment, hospitality, travel, or other unlawful expenses;
(f) been or is under administrative, civil, or criminal investigation, indictment, suspension, debarment, or audit
(other than a routine contract audit) by any party, in connection with alleged or possible violations of any
Compliance Law; or (g) as of the date hereof received written notice from, or made a voluntary disclosure to any
Governmental Authority regarding alleged or possible violations of any Compliance Law.

12.1.9 Neither such Party nor any of its Affiliates has been debarred or is subject to 

debarment and neither it nor any of its Affiliates will use in any capacity, in connection with the activities to be 
performed under this Agreement, any individual or entity that has been debarred pursuant to Section 306 of the 
FFDCA (or the international equivalent thereof), or who is the subject of a conviction described in such section.  
Each Party agrees to inform the other Party in writing immediately if it, or any individual or entity that is 
performing activities by or on behalf of itself hereunder, is debarred or is the subject of a conviction described in 
Section 306 (or the international equivalent thereof), or if any action, suit, claim, investigation or legal or 
administrative proceeding is pending or, to its and its Affiliates’ knowledge, is threatened, relating to its, or any 
individual or entity that is performing activities by or on behalf of itself hereunder, debarment or conviction.

12.2 Rhythm Representations and Warranties.  Rhythm hereby represents, warrants and 

covenants to RareStone that, as of the Effective Date:

Licensed IP Rights.

12.2.1 Rhythm has full legal or beneficial title or ownership of, or exclusive license to the

37

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

12.2.2 Rhythm has the right to grant the licenses and other rights purported to be granted

herein and has not granted to any Third Party any license or other interest in the Licensed IP Rights (a) to Develop
and Commercialize the Licensed Product within the RareStone Territory and the Field or (b) that would conflict
with the licenses and interests granted to RareStone hereunder.

12.2.3 To Rhythm’s Knowledge, there is no Third Party issued Patent that would be

infringed by (a) practicing any process or method or making, using or selling any composition, which (with regard
to such process, method, or composition) is claimed or disclosed in the Licensed Patents, to Commercialize the
Licensed Product in the Field and in the RareStone Territory, (b) practicing any process or method or making,
using or selling any composition, which (with regard to such process, method, or composition) constitutes
Licensed Know-How, to Commercialize the Licensed Product in the Field and in the RareStone Territory, or
(c) making, using or selling Licensed Product in the RareStone Territory.

Third Party that is infringing or misappropriating any of the Licensed IP Rights.

12.2.4 To Rhythm’s Knowledge, except as previously disclosed to RareStone, there is no

12.2.5 Rhythm has provided RareStone with true and correct copies (as of the Effective

Date) of the Upstream Agreements in effect as of the Effective Date. Other than the Upstream Agreements, there
are no agreements between Rhythm or its Affiliates and a Third Party pursuant to which Rhythm Controls any
Licensed IP Rights, whether by in-license or otherwise. None of Rhythm, its Affiliates and, to Rhythm’s
knowledge, any Third Party, is in breach of the Upstream Agreements and none of Rhythm, its Affiliates and, to
Rhythm’s knowledge, any other party to the Upstream Agreements has threatened to terminate, or has otherwise
alleged any material breach under, such Upstream Agreements;

12.3 Rhythm Covenant.  Rhythm hereby covenants to RareStone as follows:

12.3.1 All Data provided by Rhythm hereunder shall be accurate in all material respects.

12.3.2 Subject to Section 15.5, Rhythm shall not transfer, convey or assign any of the

Licensed IP Rights to any Person unless such Person agrees in writing to the applicable terms and conditions of
this Agreement, and Rhythm shall use reasonable efforts to promptly notify RareStone in writing of any transfer,
conveyance or assignment of any of the Licensed IP Rights.

12.3.3 Rhythm shall, and if applicable, shall cause its Affiliates to (i) comply with its

obligations under the Upstream Agreements in all material respects, and not terminate the Upstream Agreements,
except with RareStone’s prior written approval, which shall not be unreasonably withheld; (ii) not amend or
waive, or take any action or omit to take any action that would alter any of Rhythm’s rights under the Upstream
Agreements in any manner that would materially adversely affect, or would reasonably be expected to materially
adversely

38

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

affect, RareStone’s rights under this Agreement, in each case without RareStone’s prior written approval, which
shall not be unreasonably withheld; and (iii) promptly notify RareStone in writing of the receipt or delivery of any
notice of any default under, or termination or material amendment of, the Upstream Agreements that would
materially adversely affect, or would reasonably be expected to materially adversely affect, RareStone’s rights
under this Agreement.

12.3.4 Rhythm shall be responsible for any payments owed to Third Parties under the

Upstream Agreements existing as of the Effective Date between Rhythm and such Third Parties on account of
RareStone’s exploitation of Licensed Product in the Field in the Territory.

12.4 DISCLAIMER OF WARRANTIES.  EXCEPT AS OTHERWISE EXPRESSLY SET 

FORTH IN THIS SECTION 12, NEITHER PARTY MAKES ANY REPRESENTATIONS OR WARRANTIES, 
EXPRESS OR IMPLIED, REGARDING THE LICENSED IP RIGHTS, LICENSED PRODUCT OR ANY 
OTHER MATTER, INCLUDING BUT NOT LIMITED TO ANY REPRESENTATION OR WARRANTY 
REGARDING MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-
INFRINGEMENT OR VALIDITY OF ANY PATENTS ISSUED OR PENDING.

13.

Term and Termination.

13.1

Term.  The term of this Agreement shall commence on the Effective Date and shall 

continue in full force and effect until the expiry of the last remaining Payment Period, unless terminated earlier 
pursuant to this Sections 13.2, 13.3, 13.4 or 13.5 below (such period, the “Term”).  On expiration of this 
Agreement, the licenses granted hereunder by Rhythm to RareStone with respect to such Licensed Product and 
Region shall become fully paid-up, royalty fee, perpetual and irrevocable.

13.2

Termination by RareStone.

13.2.1 Prior to obtaining the MAA for the Licensed Product in the RareStone Territory,

RareStone may terminate this Agreement, in its sole discretion, upon [***] prior written notice of termination to
Rhythm.

13.2.2 After obtaining the MAA for the Licensed Product in the RareStone Territory,

RareStone may terminate this Agreement, in its sole discretion, upon [***] prior written notice of termination to
Rhythm.

13.3

Termination for Cause.  Either Party may terminate this Agreement upon or after the 

material breach of this Agreement (including the failure to pay undisputed amounts owed) by the other Party if 
such Party has not cured such breach within [***] after receipt of express written notice thereof by the former 
Party; provided, however, if any default is not capable of being cured within such [***] period, the Parties agree 
on a remediation plan allowing the breaching Party to cure the breach within an additional period of [***] and the 
breaching Party is diligently undertaking to cure such breach in accordance with such plan, then the non-

39

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

breaching Party shall have no right to terminate this Agreement for such breach before the end of the [***] 
additional cure period.  If the alleged breaching Party disputes in good faith the existence or materiality of a 
breach specified in a notice provided by the other Party in accordance with this Section 13.3, and such alleged 
breaching Party provides the other Party notice of such dispute within such [***] period, then the non-breaching 
Party shall not have the right to terminate this Agreement under this Section 13.3 unless and until the arbitrators, 
in accordance with Section 15.11, have determined that the alleged breaching Party has materially breached this 
Agreement and that such Party fails to cure such breach within [***] following such arbitrators’ decision. During 
the pendency of such dispute, all of the terms and conditions of this Agreement shall remain in effect and the 
Parties shall continue to perform all of their respective obligations hereunder.

13.4

Termination for Bankruptcy.  Either Party shall have the right to terminate this Agreement 

upon written notice to the other Party: (a) if such other Party is declared bankrupt by a court of competent 
jurisdiction; (b) if a voluntary or involuntary petition in bankruptcy is filed in any court of competent jurisdiction 
against such other Party and such petition is not dismissed within [***] after filing; (c) if such other Party shall 
make or execute an assignment of substantially all of its assets for the benefit of creditors; or (d) if such other 
Party appoints or suffers appointment of a receiver or trustee over substantially all of its property that is not 
discharged within [***] after such filing.

13.5

Termination for Patent Challenge.  Rhythm shall have the right to terminate this Agreement 

upon [***] prior written notice of termination to RareStone if RareStone, its Affiliates or its Sublicensees are 
parties to, or in any material respect, knowingly and willingly participate in or facilitate any action challenging the 
validity of the Licensed Patents (“Challenge”), unless (a) such Challenge is asserted as an affirmative defense,
counterclaim, or other defensive countermeasure in respect of, a patent infringement claim brought by Rhythm
against RareStone, its Affiliates or its Sublicensees (as applicable); (b) RareStone, its Affiliate or Sublicensee (as
applicable) withdraws or causes to be withdrawn such Challenge within such [***] period; or (c) in the case of a
Sublicensee Challenge of a Licensed Patent, RareStone terminates the sublicense, immunity or other right under
the Licensed Patents granted to such Third Party within such [***] period.

14.

Effect of Expiration or Termination.

14.1 Accrued Obligations.  Expiration or termination of this Agreement shall not relieve the 
Parties of any obligation or liability accruing prior to such expiration or termination.  Any termination of this 
Agreement shall not preclude either Party from pursuing all rights and remedies it may have under this 
Agreement, or at law or in equity, with respect to breach of this Agreement.

40

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

14.2 Rights on Termination of Agreement.  This Section 14.2 shall apply upon any termination 

(but not expiration) of this Agreement.

14.2.1 Wind-down Period.  If this Agreement is terminated after the First Commercial Sale 
of the Licensed Product in the RareStone Territory, then RareStone, by itself or through a Sublicensee or Affiliate, 
shall continue to distribute the Licensed Product in the RareStone Territory during the [***] period commencing 
on the effective date of such termination of this Agreement in order to avoid disruption in the availability of 
Licensed Products to patients and to allow Rhythm to secure an alternative distributor or licensee for the Licensed 
Product in the RareStone Territory (the “Wind-down Period”), provided that RareStone, its Affiliates and its 
Sublicensees shall cease such activities, or any portion thereof, in the RareStone Territory, upon [***] written 
notice by Rhythm requesting that such activities, or any portion thereof, be ceased.  Promptly after such [***] 
period, RareStone shall sell to Rhythm, and Rhythm shall purchase, any quantities of Licensed Product in good 
condition, with a sufficient remaining shelf life (no less than [***]) at the transfer price paid by RareStone for 
such Licensed Product.  Notwithstanding any other provision of this Agreement, during the Wind-down Period, 
RareStone’s, its Sublicensees’ and its and their respective Affiliates’ rights with respect to the Licensed Product 
(including the Licensed Marks) in the RareStone Territory shall be non-exclusive and, without limiting the 
foregoing, Rhythm shall have the right to engage one or more other distributor(s) and/or licensee(s) of the 
Licensed Product in all or part of the RareStone Territory.  Any Licensed Product sold or disposed by RareStone, 
its Affiliates and Sublicensees in the RareStone Territory during the Wind-down Period shall be subject to 
applicable payment obligations under Section 7 above.

14.2.2 Assignment of Regulatory Filings and Registrations.  RareStone shall assign (or 

cause to be assigned) to Rhythm or its designee (or to the extent not so assignable, RareStone shall take all 
reasonable actions requested by Rhythm to make available to Rhythm or its designee the benefits of) all 
Regulatory Filings and Registrations for the Licensed Product in the RareStone Territory, including any such 
Regulatory Filings or Registrations made or owned by its Affiliates and/or Sublicensees, and all domain names 
owned by RareStone for the Licensed Product.  In each case, unless otherwise required by any applicable Law or 
regulation or requested by Rhythm, the foregoing assignment (or availability) shall be made within [***] after the 
effective date of any termination of this Agreement.

14.2.3 Data and RareStone Product Know-How.  At Rhythm’s request, RareStone shall 

provide to Rhythm a copy of all Data and RareStone Product Know-How (including without limitation a copy of 
RareStone’s list of customer hospitals), to the extent not previously provided to Rhythm and permitted to be 
provided by the applicable Laws and regulations relating to the protection of personal information, and, subject to 
the terms of this Section 14.2.3, Rhythm shall have the right to use all Data and RareStone Product Know-How 
following termination of this Agreement solely within the Field and solely to Commercialize the Licensed Product 
anywhere in the world.  RareStone shall have the right to redact all confidential information and data from such 
Data and RareStone Product Know-How to the extent such information or data relates to any other products or 
services or RareStone’s confidential actual or planned business or operations.

41

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

14.2.4 Assignment of Contract Manufacturers Agreements.  At Rhythm’s request, 
RareStone shall use Commercially Reasonable Efforts to assign (or cause to be assigned) to Rhythm or its 
designee all agreements entered into between RareStone and CMOs for the Manufacture and supply of Licensed 
Product in the RareStone Territory, with the same financial conditions, in order to ensure continuity of supply.  In 
each case, unless otherwise requested by Rhythm, the foregoing assignments shall be made within [***] after the 
effective date of any termination of this Agreement.

14.2.5 Transition.  RareStone shall reasonably cooperate with Rhythm, and/or its designee 

to transition the development, sale and ongoing marketing, promotion and Commercialization of the Licensed 
Product in the RareStone Territory during the Wind-down Period.  RareStone shall, upon written request from 
Rhythm, notify its customers of such transition and shall reasonably assist such customers in ordering Licensed 
Product from Rhythm or its designee.  Without limiting the foregoing, RareStone shall use reasonable efforts to 
conduct in an expeditious manner any activities to be conducted under this Section 14.2.

14.2.6 Licenses.  Effective as of the date of the Wind-down Period and subject to the terms 

of this Section 14.2.6, RareStone hereby grants to Rhythm an exclusive, fully paid-up, royalty-free, worldwide, 
transferable, perpetual and irrevocable license, with the right to grant sublicenses, under any intellectual property 
rights owned or Controlled by RareStone that are necessary to make, use, sell, offer for sale, or import the 
Licensed Products within the RareStone Territory as they exist at the time of such termination of this Agreement.

14.2.7 Return of Materials.  Within [***] after the end of the Wind-down Period, upon 

request by Rhythm, RareStone shall either return to Rhythm or destroy all tangible items comprising, bearing or 
containing the Licensed Marks, any trade names or trademarks owned by Rhythm, Licensed Product samples, 
literature, sales and promotional aids (“Product Materials”), that are in RareStone’s possession.  Effective upon 
the end of the Wind-down Period, RareStone shall cease to use all trademarks and trade names of Rhythm 
(including the Licensed Marks) in the RareStone Territory, and all rights granted to RareStone hereunder with 
respect to the Licensed Product in the RareStone Territory shall terminate.  Upon the effective date of the 
termination of this Agreement for any reason, upon the written request of a Party, the non-requesting Party shall 
either, at the requesting Party’s election: (a) promptly destroy all copies of such Confidential Information in the 
possession or control of the non-requesting Party and confirm such destruction in writing to the requesting Party; 
or (b) promptly deliver to the requesting Party, [***], all copies of such Confidential Information in the possession 
or control of the non-requesting Party.  Notwithstanding the foregoing, the non-requesting Party shall be permitted 
to retain such Confidential Information (i) to the extent reasonably necessary for purposes of performing any 
continuing obligations or exercising any ongoing rights hereunder and, in any event, a single copy of such 
Confidential Information for archival purposes and (ii) any computer records or files containing such Confidential 
Information that have been created solely by such non-requesting Party’s automatic archiving and back-up 
procedures, to the extent created and retained in a manner consistent with such non-requesting Party’s standard 
archiving and back-up procedures, but not for any other uses or purposes.  All Confidential

42

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

Information shall continue to be subject to the terms of this Agreement for the period set forth in Section 9.1.

14.2.8 Sublicenses.  Upon any termination of this Agreement, Rhythm shall be entitled, in 

its sole discretion, to grant a direct license to any Sublicensee of RareStone hereunder having the same scope as 
such sublicense and on terms and conditions no less favorable to such Sublicensee than the terms and conditions 
of this Agreement, provided that such Sublicensee is not in default of any applicable obligations under this 
Agreement and agrees in writing to be bound by the terms and conditions of such direct license.

14.2.9 No Renewal, Extension or Waiver.  Acceptance of any order from, or sale or license 

of, any Licensed Product to RareStone after the notice or effective date of expiration or termination of this 
Agreement in its entirety shall not be construed as a renewal or extension hereof, or as a waiver of expiration or 
termination of this Agreement in its entirety.

14.2.10  Costs and Expenses.  [***]  Any out-of-pocket costs and expenses incurred by a 

Party but to be borne by the other Party pursuant to this Section 14.2.10 shall be reimbursed within [***] after the 
Party responsible for such costs and expenses receives an invoice from the other Party therefor (which invoice 
shall be accompanied by documentation supporting the calculation of amounts to be so reimbursed).

14.3

Survival.  Upon termination or expiration of this Agreement, all rights and obligations of 
the Parties under this Agreement shall be terminated except those described in the following Sections: 8, 9, 10.1, 
12.4, 14.1, 14.2, this 14.3 and 15.  In addition, upon expiration of the Term (but not termination), the licenses 
granted to RareStone hereunder will survive and will automatically become non-exclusive, perpetual, irrevocable, 
fully paid-up, non-assessable and non-royalty bearing.

15. Miscellaneous.

15.1 RareStone Obligations.  Notwithstanding anything herein to the contrary, RareStone may 

fulfill its obligations hereunder by or through its Affiliates, its Sublicensees, or any of its or their respective 
(sub)contractors.

15.2

Public Announcements.  Neither Party shall make any public announcements concerning 
matters concerning this Agreement or the negotiation thereof without the prior written consent of the other party 
unless such disclosure is required by law, in which case the announcing party shall provide the other party with 
reasonable notice of such disclosure.

15.3

Insurance.

15.3.1 Each Party shall secure and maintain in effect, during the Term of this Agreement

and for a period of [***] thereafter, comprehensive general liability insurance (including product liability
insurance), underwritten by a reputable insurance carrier, in a form and having liability limits standard and
customary for entities in the pharmaceutical industry

43

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

based on such Party’s activities and location and indemnification obligations under this Agreement.

15.3.2 Each Party shall furnish to the other Party, on request, certificates of insurance

setting forth the amount of liability insurance and shall provide the other Party at least [***] written notice prior to
any termination or material reduction to the level of coverage, unless a replacement insurance policy that complies
with this Section 15.3 is in place before such termination or material reduction.

15.4

Force Majeure.  If the performance of any part of this Agreement by either Party is 

prevented, restricted, interfered with or delayed by reason of any cause beyond the reasonable control of such 
Party, regardless of whether such cause is foreseeable as of the Effective Date or thereafter (including, fire, flood, 
earthquake, tsunami, embargo, power shortage or failure, acts of war, insurrection, riot, terrorism, strike, lockout 
or other labor disturbance, acts of God, epidemic, pandemic (including COVID-19) or any acts, omissions or 
delays in acting of the other Party), the Party so affected shall, upon giving written notice to the other Party within 
[***] of the occurrence of such cause, be excused from such performance to the extent of such prevention, 
restriction, interference or delay; provided that the affected Party shall use its commercially reasonable efforts to 
avoid or remove such causes of non-performance and shall continue performance with the utmost dispatch 
whenever such causes are removed.

15.5 Assignment.  Neither Party shall assign its rights or obligations under this Agreement 

without the prior written consent of the other Party; provided, however, that a Party may, without such consent, 
assign this Agreement and its rights and obligations hereunder (a) to any Affiliate, or (b) in connection with the 
transfer or sale of all or substantially all of its business to which this Agreement relates, or in the event of its 
merger, consolidation, change in control or similar transaction.  Notwithstanding the foregoing, in the event of any 
assignment of this Agreement by a Party, intellectual property rights owned or controlled by the other party to 
such transaction shall not be included in the technology licensed or assigned by such Party hereunder so long as 
such intellectual property rights are not practiced by the affected Party in the course of performing its obligations 
under this Agreement. Any permitted assignee shall assume all obligations of its assignor under this Agreement.  
Any purported assignment in violation of this Section 15.5 shall be void.

15.6

Severability.  If any term or other provision of this Agreement is held to be invalid, illegal 
or incapable of being enforced in accordance with the terms hereunder, all other conditions and provisions of this 
Agreement will nevertheless remain in full force and effect so long as the economic or legal substance of the 
transaction contemplated by this Agreement is not affected in any manner materially adverse to either Party.  
Upon any such determination, the Parties shall negotiate in good faith to modify this Agreement so as to effect 
their original intent as contemplated by this Agreement to the greatest extent possible.

15.7 Relationship of the Parties.  For all purposes of this Agreement, Rhythm and RareStone 

shall be deemed to be independent entities and anything in this Agreement to the contrary notwithstanding, 
nothing herein shall be deemed to constitute Rhythm and RareStone as

44

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

partners, joint ventures, co-owners, an association or any entity separate and apart from each Party itself, nor shall 
this Agreement constitute any Party hereto an employee or agent, legal or otherwise, of the other Party for any 
purposes whatsoever.  Neither Party is authorized to make any statements nor representations on behalf of the 
other Party or in any way obligate the other Party, except as expressly authorized in writing by the other Party.

15.8

Interpretation.  The headings set forth at the beginning of the various Sections of this 

Agreement are for reference and convenience and shall not affect the meanings of the provisions of this 
Agreement.  Whenever the context may require, any pronoun shall include the corresponding masculine, feminine 
and neuter forms.  The words “include” and “contain” (and their variant forms) shall be deemed to be followed by 
the phrase “without limitation.”  The word “will” shall be construed to have the same meaning and effect as the 
word “shall.”  “Dollar” or “$” as used in this Agreement means the lawful currency of the United States.  Any 
reference to any laws, codes or regulations herein shall be construed as referring to such laws as from time to time 
enacted, repealed or amended.  The words “herein,” “hereof” and “hereunder,” and words of similar import, shall 
be construed to refer to this Agreement in its entirety and not to any particular provision hereof.  Any reference 
herein to any Person shall be construed to include the Person’s permitted successors and assigns.  Each accounting 
term used herein that is not specifically defined herein shall have the meaning given to it under generally accepted 
cost accounting principles, but only to the extent consistent with its usage and the other definitions in this 
Agreement.

15.9 Governing Law.  This Agreement shall be governed by and construed in accordance with 

the laws of the State of New York, without regard to the conflicts of law principles thereof.

15.10 Dispute Resolution.  The Parties recognize that disputes may from time to time arise 

relating to or in connection with this Agreement, including the Parties’ rights and obligations hereunder.  The 
Parties agree that, except as otherwise provided in Section 6.1.5, if a dispute arises out of or relating to this 
Agreement, including without limitation, any alleged breach of this Agreement or any issue relating to the 
interpretation or application of this Agreement, and the Parties are unable to resolve such dispute within [***] 
after such dispute is first identified by either Party in writing to the other, the Parties shall refer such dispute to the 
Senior Executives for attempted resolution by good faith negotiations within [***] after such notice is received.  If 
the dispute is not resolved within such [***], the dispute shall be finally resolved by arbitration in accordance 
with Section 15.11, and thereafter neither Party shall have any further obligation under this Section 15.10.  Any 
disputes concerning the propriety of the commencement of arbitration shall be finally settled by the arbitral 
tribunal.  Notwithstanding the foregoing, and without waiting for the expiration of any such [***], each Party 
shall have the right to apply to any court of competent jurisdiction for appropriate interim or provisional relief, as 
necessary to protect the rights or property of such Party.

15.11 Arbitration.  If the Parties are unable to resolve any disputes arising under or in connection 
with this Agreement as described above in Section 15.10, then, all such disputes shall be submitted to and finally 
settled by the International Court of Arbitration of the

45

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

International Chamber of Commerce in accordance with the current Rules of Arbitration of the International 
Chamber of Commerce as then in effect by one or more arbitrators appointed in accordance with said Rules.  The 
seat, or legal place, of arbitration shall be New York City, New York, USA.  The language to be used in the 
arbitral proceedings will be English.  The arbitration award shall be final and binding on the Parties, and the 
Parties undertake to carry out any award without delay.  Judgment upon the award rendered by such arbitrator(s) 
may be entered by any court or forum having jurisdiction.  The content of all arbitration proceedings and any 
rulings or awards of the arbitrator(s) under this Section 15.11 shall be deemed Confidential Information of both 
Parties; provided that in addition to disclosures permitted by Section 9.3, disclosure shall be authorized (i) to the 
extent required to protect or pursue a legal right, or enforce or challenge an award in bona fide legal proceedings 
before a state court or other judicial authority, (ii) where needed for the preparation or presentation of a claim or 
defense in the arbitration, or (iii) by order of the arbitral tribunal upon application of a Party. Notwithstanding the 
Parties’ agreement to arbitrate, unless the Parties agree in writing in any particular case, claims and disputes 
between the Parties relating to or arising out of, or for which resolution depends in whole or in part on a 
determination of the interpretation, scope, validity, enforceability or infringement of any Patents shall not be 
subject to arbitration under this Agreement, and the Parties may pursue whatever rights and remedies may be 
available to them under law or equity, including litigation in a court of competent jurisdiction, with respect to such 
claims and disputes.

15.12 Entire Agreement; Amendment.  This Agreement, together with the Exhibit(s) hereto, the 
Trademark License, the Clinical Supply Agreement, the Commercial Supply Agreement, the Quality Agreement 
and the Pharmacovigilance & Safety Agreement, and each additional document, instrument or other agreement to 
be executed and delivered pursuant hereto, constitute all of the agreements of the Parties with respect to, and 
supersede all prior agreements and understandings relating to the subject matter of, this Agreement or the 
transactions contemplated by this Agreement.  This Agreement may not be modified or amended except by a 
written instrument specifically referring to this Agreement signed by the Parties hereto.

15.13 Waiver.  No waiver by one Party of the other Party’s obligations, or of any breach or default 
hereunder by any other Party, shall be valid or effective, unless such waiver is set forth in writing and is signed by 
the Party giving such waiver; and no delay in enforcing a Party’s rights under this agreement or such waiver shall 
be deemed a waiver of any subsequent breach or default of the same or similar nature or any other breach or 
default by such other Party.

15.14 Notices.  Any consent, notice or report required or permitted to be given or made under this 
Agreement by a Party to the other Party shall be in writing, in the English language, shall expressly reference the 
section(s) of this Agreement to which they pertain, and shall be delivered to the other Party, effective on receipt at 
the appropriate address set forth below or to such other addresses as may be designated in writing by the Parties 
from time to time during the term of this Agreement:

46

[***] Certain information in this document has been excluded pursuant to Regulation S-K, Item (601)(b)(10).
Such excluded information is both (i) not material and (ii) the type that the Registrant treats as private or
confidential.

If to Rhythm:

If to RareStone:

Rhythm Pharmaceuticals Inc.
222 Berkeley Street, 12th Floor
Boston, MA, USA, 02116
Attention: Chief Executive Officer

RareStone Inc.
1 Main Street, 13th Floor
Cambridge, MA 02142
Attention: [***]
Email: [***]

With a copy to:

Cooley LLP
500 Boylston Street
14th Floor
Boston, MA 02116
Attention: [***]
Email: [***]

15.15 Counterparts.  This Agreement may be executed in separate counterparts, each of which 

shall be deemed an original, but all of which together shall constitute one and the same instrument.

[SIGNATURE PAGE FOLLOWS.]

47

IN WITNESS WHEREOF, each Party has caused a duly authorized representative to execute and deliver

this Exclusive License Agreement as of the Effective Date.

Rhythm Pharmaceuticals Inc.

By:
Name:
Title:

RareStone Group Ltd.

By:
Name:
Title:

[Signature Page to Exclusive License Agreement]

● [***]

EXHIBIT A
LICENSED MARKS

[***]

EXHIBIT B
LICENSED PATENTS

[***]

EXHIBIT C
SETMELANOTIDE

EXHIBIT D
CLINICAL DEVELOPMENT PLAN

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

[***]

EXHIBIT E
COMMERCIALIZATION PLAN

[***]

[***]

EXHIBIT F
EQUITY AGREEMENT

EXHIBIT G
PRESS RELEASE

Rhythm Pharmaceuticals and RareStone Ltd. Announce Exclusive Licensing Agreement for the
Development and Commercialization of IMCIVREE (setmelanotide) in China

-- RareStone to seek marketing authorization for IMCIVREE to treat obesity due to biallelic POMC, PCSK1 and
LEPR deficiencies and Bardet-Biedl and Alström syndromes in mainland China, Hong Kong and Macau –
-- Rhythm to receive $12 million upfront in cash and equity, up to $63.5 million in future milestone payments and
sales royalties --

BOSTON, December 6, 2021 -- Rhythm Pharmaceuticals, Inc. (Nasdaq: RYTM), a biopharmaceutical company
aimed at developing and commercializing therapies for the treatment of rare genetic diseases of obesity, and
RareStone LTD, formerly Citrine Medicine, a China-based rare disease company, today announced an exclusive
licensing agreement for the development and commercialization of IMCIVREE® (setmelanotide) in China,
including mainland China, Hong Kong and Macau. This licensing agreement marks the first expansion of
Rhythm’s pipeline into Asia and is designed to accelerate patient access to IMCIVREE where there remains
significant unmet need to address the severe, early-onset obesity and hyperphagia that characterize both acquired
and genetic diseases of the melanocortin-4 receptor (MC4R) pathway.

According to the terms of the agreement, RareStone will seek local approvals to commercialize IMCIVREE for
the treatment of obesity and hyperphagia due to biallelic proopiomelanocortin (POMC), proprotein convertase
subtilisin/kexin type 1 (PCSK1) or leptin receptor (LEPR) deficiency, as well as Bardet-Biedl and Alström
syndromes. Additionally, RareStone will fund efforts to identify and enroll patients from China in Rhythm’s
global EMANATE trial, a Phase 3, randomized, double-blind, placebo-controlled trial to evaluate setmelanotide in
five independent sub-studies in patients with obesity due to a heterozygous variant of POMC/PCSK1 or LEPR;
certain variants of the SRC1 gene, certain variants of the SH2B1 gene, or PCSK1 N221D deletions within the
MC4R pathway.

“RareStone, a company committed to treating rare diseases, is well-positioned to leverage its network of hospitals
and key opinion leaders, deep regulatory experience and community-building infrastructure to advance
IMCIVREE through clinical development and regulatory approvals in China,” said David Meeker, M.D., Chair,
Chief Executive Officer and President of Rhythm. “We are thrilled to enter into this agreement, which
substantially accelerates our ability to address the needs of patients living in China and potentially make
IMCIVREE available to many more patients with rare genetic diseases of obesity.”

RareStone was founded in 2019 with funding from leading health care investors, including Eight Roads, F-Prime
Capital, Vivo Capital, Quan Capital, 3H Health Investment and WU Capital. The Shanghai-based company is
focused on building an ecosystem to support patients and families living with rare diseases in Greater China and
has dedicated itself to improving the lives of patients with rare and intractable diseases by making diagnosis and
essential treatments available and accessible to those who need them.

“There is a significant need in China for a therapeutic option to treat patients with early-onset, severe obesity and 
hyperphagia caused by variants in genes of the MC4R pathway,” said Shawn Xiang, Ph.D., CEO of RareStone.  
“Rhythm’s precision medicine, IMCIVREE (setmelanotide), approved by FDA and authorized by the European
Commission and Great Britain’s Medicines & Healthcare Products Regulatory Agency, has transformed the
treatment paradigm for rare genetic diseases of obesity. We are eager to deliver the proven clinical benefit of
IMCIVREE to patients in China and plan to pursue local approvals rapidly in five initial indications, while
supporting Rhythm’s ongoing clinical development efforts more broadly.”

According to the terms of the licensing agreement, RareStone will make an upfront payment to Rhythm of $7
million and issue $5 million in equity to Rhythm. Rhythm will be eligible to receive development and
commercialization milestones of up to $63.5 million, as well as tiered royalty payments on annual net sales of
IMCIVREE.

About Rhythm Pharmaceuticals
Rhythm is a commercial-stage biopharmaceutical company committed to transforming the treatment paradigm for
people living with rare genetic diseases of obesity. Rhythm’s precision medicine, IMCIVREE (setmelanotide),
was approved in November 2020 by the U.S. Food and Drug Administration (FDA) for chronic weight
management in adult and pediatric patients 6 years of age and older with obesity due to POMC, PCSK1 or LEPR
deficiency confirmed by genetic testing and in July and September 2021, respectively, by the European
Commission (EC) and Great Britain’s Medicines & Healthcare Products Regulatory Agency (MHRA) for the
treatment of obesity and the control of hunger associated with genetically confirmed loss-of-function biallelic
POMC, including PCSK1, deficiency or biallelic LEPR deficiency in adults and children 6 years of age and
above. IMCIVREE is the first-ever FDA-approved and EC- and MHRA-authorized therapy for patients with these
rare genetic diseases of obesity. The Company submitted a supplemental New Drug Application (sNDA) to the
FDA, which was accepted for filing in November 2021 and assigned a Prescription Drug User Fee Act (PDUFA)
goal date of March 16, 2022. Rhythm also submitted a Type II variation application to the European Medicines
Agency in October 2021 seeking regulatory approval and authorization for setmelanotide to treat obesity and
control of hunger in adult and pediatric patients 6 years of age and older with BBS or Alström syndrome in both
the United States and European Union. Additionally, Rhythm, along with its partners, is advancing a broad clinical
development program for setmelanotide in other rare genetic diseases of obesity and is leveraging the Rhythm
Engine, the largest known obesity DNA database -- now with approximately 45,000 sequencing samples --
to improve the understanding, diagnosis and care of people living with severe obesity due to certain genetic
deficiencies. Rhythm’s headquarters is in Boston, MA.

About RareStone LTD.
RareStone, formerly Citrine Medicine, is dedicated to improving the lives of patients with rare and intractable
diseases by making diagnosis and essential treatments available and accessible to those who need them in Greater
China. Our mission is to build the first rare disease ecosystem in China, and in doing so, enable people with rare
diseases to live more normal lives. In addition to developing and marketing rare disease drugs, RareStone aims to
establish a patient-centric platform which educates people on rare diseases, trains doctors on diagnosis and
treatment, and helps doctors develop a full disease management protocol. RareStone’s lead product candidate,
Wakix® (pitolisant), is an investigational oral drug in development for the treatment of narcolepsy and obstructive
sleep apnea in China. RareStone also recently announced two strategic partnerships that will gives the company
exclusive Greater China rights to develop, register, and commercialize Alkindi® for pediatric congenital adrenal
hyperplasia (CAH) patients and Efmody® for adolescent and adult CAH and adrenal insufficiency patients.
RareStone is headquartered in Shanghai, China and has other offices in Beijing, China and Cambridge, Mass. For
more information, visit www.rarestonegroup.com

IMCIVREE® (setmelanotide) Indication
In the United States, IMCIVREE is indicated for chronic weight management in adult and pediatric patients 6
years of age and older with obesity due to proopiomelanocortin (POMC), proprotein convertase subtilisin/kexin
type 1 (PCSK1), or leptin receptor (LEPR) deficiency confirmed by an FDA-approved genetic test demonstrating
variants in POMC, PCSK1, or LEPR genes that are interpreted as pathogenic, likely pathogenic, or of uncertain
significance (VUS).

In the EU and Great Britain, IMCIVREE is indicated for the treatment of obesity and the control of hunger
associated with genetically confirmed loss-of-function biallelic POMC, including PCSK1, deficiency or biallelic
LEPR deficiency in adults and children 6 years of age and above. IMCIVREE should be prescribed and
supervised by a physician with expertise in obesity with underlying genetic etiology.

Limitations of Use
IMCIVREE is not indicated for the treatment of patients with the following conditions as IMCIVREE would not
be expected to be effective:

● Obesity due to suspected POMC, PCSK1, or LEPR deficiency with POMC, PCSK1, or LEPR variants

classified as benign or likely benign;

● Other types of obesity not related to POMC, PCSK1 or LEPR deficiency, including obesity associated

with other genetic syndromes and general (polygenic) obesity.

Important Safety Information

WARNINGS AND PRECAUTIONS

Disturbance in Sexual Arousal: Sexual adverse reactions may occur in patients treated with IMCIVREE.
Spontaneous penile erections in males and sexual adverse

reactions in females occurred in clinical studies with IMCIVREE. Instruct patients who have an erection lasting
longer than 4 hours to seek emergency medical attention.

Depression and Suicidal Ideation: Some drugs that target the central nervous system, such as IMCIVREE, may
cause depression or suicidal ideation. Monitor patients for new onset or worsening of depression. Consider
discontinuing IMCIVREE if patients experience suicidal thoughts or behaviors.

Skin Pigmentation and Darkening of Pre-Existing Nevi: IMCIVREE may cause generalized increased skin
pigmentation and darkening of pre-existing nevi due to its pharmacologic effect. This effect is reversible upon
discontinuation of the drug. Perform a full body skin examination prior to initiation and periodically during
treatment with IMCIVREE to monitor pre-existing and new skin pigmentary lesions.

Risk of Serious Adverse Reactions Due to Benzyl Alcohol Preservative in Neonates and Low Birth Weight
Infants: IMCIVREE is not approved for use in neonates or infants.

ADVERSE REACTIONS

● The most common adverse reactions (incidence ≥23%) were injection site reactions, skin

hyperpigmentation, nausea, headache, diarrhea, abdominal pain, back pain, fatigue, vomiting, depression,
upper respiratory tract infection, and spontaneous penile erection.

USE IN SPECIFIC POPULATIONS
Discontinue IMCIVREE when pregnancy is recognized unless the benefits of therapy outweigh the potential risks
to the fetus.

Treatment with IMCIVREE is not recommended for use while breastfeeding.

To report SUSPECTED ADVERSE REACTIONS, contact Rhythm Pharmaceuticals at +1 (833) 789-6337 or
FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

See U.S. Full Prescribing Information, EU SmPC and MHRA SmPC for IMCIVREE.

Forward-Looking Statements

This press release contains forward-looking statements within the meaning of the Private Securities Litigation
Reform Act of 1995. All statements contained in this press release that do not relate to matters of historical fact
should be considered forward-looking statements, including without limitation statements regarding activities in
connection with the exclusive licensing agreement with RareStone and potential payments thereunder, the
potential, safety, efficacy, and regulatory and clinical progress of setmelanotide, including the anticipated timing
for initiation of clinical trials and

release of clinical trial data and our expectations surrounding potential regulatory submissions, approvals and
timing thereof, and our business strategy and plans, including regarding commercialization of setmelanotide.
Statements using word such as “expect”, “anticipate”, “believe”, “may”, “will” and similar terms are also
forward-looking statements. Such statements are subject to numerous risks and uncertainties, including, but not
limited to our ability to enroll patients in clinical trials, the design and outcome of clinical trials, the impact of
competition, the ability to achieve or obtain necessary regulatory approvals, risks associated with data analysis
and reporting, our liquidity and expenses, the impact of the COVID-19 pandemic on our business and operations,
including our preclinical studies, clinical trials and commercialization prospects, and general economic
conditions, and the other important factors discussed under the caption “Risk Factors” in our Quarterly Report
on Form 10-Q for the quarter ended September 30, 2021 and our other filings with the Securities and Exchange
Commission. Except as required by law, we undertake no obligations to make any revisions to the forward-looking
statements contained in this release or to update them to reflect events or circumstances occurring after the date
of this release, whether as a result of new information, future developments or otherwise.

Corporate Contact:
David Connolly
Head of Investor Relations and Corporate Communications
Rhythm Pharmaceuticals, Inc.
857-264-4280
dconnolly@rhythmtx.com

Investor Contact:
Hannah Deresiewicz
Stern Investor Relations, Inc.
212-362-1200
hannah.deresiewicz@sternir.com

Media Contact:
Adam Daley
Berry & Company Public Relations
212-253-8881
adaley@berrypr.com

CONSULTING AGREEMENT

Exhibit 10.21.2

This Consulting Agreement (this “Agreement”) is entered effective as of this 11th day of September, 2021
(the “Effective  Date”)  between  Rhythm  Pharmaceuticals,  Inc.,  a  Delaware  corporation  located  at  222  Berkeley
Street, Suite 1200, Boston, MA 02116 (the “Company”), and Murray Stewart, D.M., F.R.C.P. (the “Consultant”),
residing  or  having  a  principal  place  of  business  at  ________________________________  (each,  a  “Party”  and
collectively, the “Parties”).

RECITALS

WHEREAS, the Consultant and the Company are party to an offer letter dated as of Setptember 14, 2018

(the “Offer Letter”);

WHEREAS,  the  Consultant  terminated  employment  as  the  Company’s  Chief  Medical  Officer  as  of
September  10,  2021  (the  “Separation  Date”)  without  Good  Reason  (as  defined  in  the  Offer  Letter),  it  being
understood  and  agreed  by  the  Parties  that  the  Consultant  will  not  be  entitled  to  the  severance  payments  and
benefits set forth in the Offer Letter; and

WHEREAS, the Company, on behalf of itself and its subsidiaries and successors, whether now existing or
hereafter acquired or established (severally and collectively, the “Company”) desires to obtain the services of the
Consultant, and the Consultant is willing to render services upon the terms and conditions set forth below.

NOW,  THEREFORE,  in  consideration  of  the  mutual  promises  contained  herein,  the  Company  and  the

Consultant hereby agree as follows:

ARTICLE 1.  ENGAGEMENT AND SCOPE OF WORK

1.1.

Engagement.  Subject  to  the  following  terms  and  conditions,  the  Company  hereby  retains  the
Consultant to perform such consulting and advisory services related to the Consultant’s area of work experience
and  expertise  as  the  Company  may  from  time  to  time  reasonably  request  (the  “Services”)  and  the  Consultant
accepts  such  engagement.  All  Services  to  be  performed  by  the  Consultant  for  the  Company  shall  be  under  the
general supervision of the Company. The Services may be sought by the Company over the telephone, in writing
or  by  email,  or  in  person  at  the  Company  or  at  the  Consultant’s  offices  or  laboratory  or  in  other  locations  as
mutually agreed upon.

1.2.

Commitment.  The  Consultant  agrees  to  be  available  to  render  the  Services  from  time  to  time  as
requested by the Company at such times and locations as may be mutually agreed by the Parties. The Consultant
shall devote at least twelve (12) hours per week to the performance of the Services. The Consultant shall devote
reasonable commercial efforts to the performance of the Services, and shall perform them in accordance with all
applicable laws and regulations, and consistent with current industry standards relative to such Services.

1.3.

Nature  of  Relationship.  The  Parties  acknowledge  and  agree  that,  subject  to  Section  4.1  and  the
other  remaining  provisions  of  this  Agreement,  the  Consultant  is  entering  into  a  non-exclusive  consulting
relationship with the Company.

Page 1 of 17

ARTICLE 2.  COMPENSATION

2.1.

Consulting  Fees.  For  all  Services  provided  under  this  Agreement,  the  Company  will  pay  the
Consultant a monthly fee of $12,000 per month, prorated for any partial month of service and payable monthly in
arrears.  The Consultant acknowledges and confirms that the Consultant has been selected to serve as a Consultant
because of expertise in the relevant subject matter. Nothing in this Agreement is intended to be, or construed as, a
reward  for  past  or  incentive  for  future  decisions  regarding  prescribing,  purchasing,  using,  recommending
preferential  formulary  status,  or  dispensing  any  Company  product.  The  Parties  represent  and  warrant  that  the
compensation  described  in  this  Section  2  was  determined  by  the  Parties  through  good  faith  and  arms-length
bargaining, constitutes fair market value for the Services, and has not been determined in a manner that takes into
account  the  volume  or  value  of  any  business  between  the  Parties  or  as  an  inducement  to  generate  business  for
Company. The Parties further acknowledge and agree that the Consultant shall continue to make all treatment and
prescribing decisions (including prescribing products) solely in accordance with independent medical and clinical
judgment, and that such decisions shall not be affected by this Agreement, the payments made hereunder or the
relationship created hereby.

2.2.

Expenses.  Travel  and  related  expenses  incurred  by  the  Consultant  in  connection  with  the
performance  of  Services  under  this  Agreement  will  be  reimbursed  at  actual  cost  by  the  Company.  No
reimbursement  will  be  made  for  any  expenses  incurred  by  the  Consultant  during  the  performance  of  Services
under  this  Agreement  unless  such  expenses  are  approved  in  advance  by  the  Company.  All  approvals  by  the
Company must be given or confirmed in writing; expense approvals can be requested from the Chief Executive
Officer or any Vice President of the Company.

2.3.

Equity  Awards.  Schedule A  to  this  Agreement  sets  forth  each  option  to  purchase  shares  of  the
Company’s  common  stock  (each,  an  “Option”)  and  restricted  stock  unit  award  of  the  Company  held  by  the
Consultant (each, an “RSU Award” and together with the Options, the “Equity Awards”), in each case, as of the
Separation Date. There shall be no break in service as a result of the occurrence of the Separation Date and the
Consultant’s  commencement  of  Services  under  this  Agreement  for  purposes  of  the  Equity  Awards.    However,
notwithstanding anything to the contrary in the agreements evidencing the Equity Awards, and subject to Section
7.1 below, Consultant acknowledges and agrees that (i) as of the Separation Date, each Equity Award was vested
as to  the number of  shares  shown  under  the  heading  “Vested  Shares”  set  forth on Exhibit A  (“Vested  Shares”);
(ii)  each  RSU  Award  shall  remain  eligible  to  vest  during  the  Consulting  Period  with  respect  to  the  number  of
shares  shown  under  the  heading  “Shares  Eligible  to  Vest”  set  forth  on  Exhibit A  (“Shares  Eligible  to  Vest”)  in
accordance  with  its  original  vesting  schedule  and  subject  to  the  Consultant’s  continued  Services  under  this
Agreement  through  the  applicable  vesting  date(s);  (iii)  the  portion  of  each  Equity  Award  that  covers  neither
Vested Shares nor Shares Eligible to Vest was forfeited and terminated for no consideration as of the Separation
Date; and (iv) the portion of each Option covering Vested Shares will remain outstanding and exercisable until the
earlier of (A) the final expiration date of the Option set forth in the documents governing the Option and (B) the
expiration of three months following the termination of the Services (provided that the Option will remain subject
to  earlier  termination  in  connection  with  a  corporate  transaction  or  event  in  accordance  with  the  documents
governing the Option).

Page 2 of 17

2.4.

2021 Bonus. The Company shall pay to the Consultant an amount in cash equal to the annual bonus
the  Consultant  would  have  earned  for  2021  had  the  Consultant  remained  employed  by  the  Company,  as
determined  by  the  Company’s  board  of  directors  in  its  discretion  based  on  actual  performance  achieved,
multiplied by a fraction (a) the numerator of which is (i) nine (9) plus (ii) the product of thirty percent (30%) and
the number of months the Consultant provides the Services hereunder during the fourth quarter of 2021, and (b)
the  denominator  of  which  is  twelve  (12).  Such  amount  shall  be  paid  to  the  Consultant,  less  applicable
withholdings, when 2021 bonuses are paid in the ordinary course to actively employed senior executives of the
Company, but in no event later than March 15, 2022.

2.5.

Other.  Any other future compensation, including equity awards or fees, shall be determined in the

discretion of the Company and/or the Board.

ARTICLE 3.  THIRD PARTY RESTRICTIONS AND POLICIES

3.1.

Absence of Restrictions.  The  Consultant  represents  and  warrants  that  the  Consultant  is  presently
under no contractual or other restrictions or obligations which are inconsistent with the Consultant’s execution of
this  Agreement  or  the  performance  of  the  Services  hereunder,  and  during  the  term  of  this  Agreement,  the
Consultant agrees not to enter into any agreement, either written or oral, that conflicts with the obligations under
this Agreement. The Consultant represents and warrants that the performance of all the terms of this Agreement
does not and will not breach any agreement or obligation to keep in confidence proprietary information acquired
by  the  Consultant  from  any  third  party  in  confidence  or  in  trust.  The  Consultant  agrees  not  to  divulge  to  the
Company  any  trade  secrets,  know-how,  confidential  information,  or  other  proprietary  intellectual  property,
including any such items that the Consultant may have acquired from or developed for any third party, in violation
of any agreement between the Consultant and such third party.

ARTICLE 4.  DISCLOSURES, NON-COMPETITION, AND NON-SOLICITATION

4.1.

Disclosures.  The  Consultant  agrees  to  fully  disclose  his/her  relationship  with  Company
contemplated in this Agreement, consistent with requirements of any healthcare institution, medical committee, or
other medical or scientific organization with which the Consultant is affiliated. If the Consultant is or becomes a
member of a committee of a third party that is responsible for setting formularies or developing clinical practice
guidelines affiliated with any healthcare institute, medical committee, or other scientific organization (collectively,
“Committee”),  The  Consultant  agrees  to  comply  with  all  disclosure  obligations  to  such  Committee  and  shall
disclose  to  said  Committee  the  existence  and  nature  of  the  Consultant’s  relationship  with  Company  without
breaching any obligations of confidentiality to Company as provided under the Agreement. Upon disclosure, the
Consultant  shall  follow  the  procedures  set  forth  by  the  Committee  of  which  the  Consultant  is  a  member  (e.g.,
recusing  oneself  from  decisions  relating  to  the  product  for  which  the  Consultant  has  provided  services  to
Company). The Consultant represents and warrants that the Consultant has fully complied with any obligations of
its current place of employment or applicable institutional affiliations to disclose and obtain prior written approval
of  the  Consultant’s  acting  as  a  consultant  for  Company  and  of  the  duties  required  of  the  Consultant  under  this
Agreement.

Page 3 of 17

4.2.

Non-Competition.  The  Consultant  understands  the  confidential  nature  of  the  information  and
materials  that  the  Consultant  will  acquire  or  develop  in  performing  Services  under  this  Agreement.  The
Consultant acknowledges that if such information or materials were revealed to competitors of the Company, then
such disclosure could cause damage to the Company. Therefore, the Consultant acknowledges and agrees that, for
the duration of the term of this Agreement, the Consultant shall not engage in any activity that would constitute a
conflict of interest with the Company, and shall not assist any other person or entity that competes or intends to
compete with the Company and any other specific programs agreed to in writing by the Parties. The Consultant
agrees  to  notify  Company  in  writing  prior  to  performing  any  services  for  or  on  behalf  of  a  drug  compendia
organization  which  relates  to  a  Company  product.  The  Company  reserves  the  right  to  terminate  services  in  the
event that the Company determines, in its sole discretion, that such compendia-related activities pose a potential
conflict of interest with the Consultant’s Services for Company. The Consultant agrees that, until the later of the
termination of this Agreement or the first anniversary of the Separation Date, the Consultant will not, directly or
indirectly, as an officer, director, manager, employee, consultant, advisor, owner, partner, member, stockholder, or
in any other capacity, (a) compete with the business or planned business of the Company or any of its subsidiaries
or controlled affiliates, or (b) take any steps or actions to facilitate or prepare for competition with the business or
planned business of the Company or any of its subsidiaries or controlled affiliates, nor will the Consultant assist
another person to take any action that the Consultant would be prohibited from taking under this Section 4.2.  The
obligations not to compete that the Consultant has undertaken under this Section 4.2 shall apply in all countries of
the world.  For purposes of this Section 4.2, the Consultant will not be deemed or treated as being in competition
with the business or planned business of the Company or any of its subsidiaries or controlled affiliates or as being
in  violation  of  the  covenant  set  forth  in  the  clause  (b)  above  in  this  Section  4.2  merely  by  virtue  of  the
Consultant’s ownership of any equity interest in any business or person that is in competition with, or is planning
to be in competition with, the business or planned business of the Company or any of its subsidiaries or controlled
affiliates, if my ownership of any such equity interest represents five percent (5%) or less the total equity interests
in  such  business  or  person.    The  Consultant  hereby  acknowledges  and  agrees  that  the  foregoing  restrictions
contained  in  this  Section  4.2  are  reasonable,  proper  and  necessitated  by  the  legitimate  business  interests  of  the
Company and will not prevent the Consultant from earning a living or pursuing the Consultant’s career.  In the
event that a court finds this Section 4.2, or any of its restrictions, to be unenforceable or invalid, the Consultant
and the Company agree that (i) this Section 4.2 will be automatically modified to provide the Company with the
maximum protection of its business interests allowed by law and (ii) the Consultant shall be bound, and such court
shall  enforce,  this  Section  4.2  as  so  modified.    The  parties  agree  that  for  the  purposes  of  this  Agreement,
“business” shall mean development of MC4R agonists for the treatment of human disease.  The Consultant has
seven  business  days  following  the  Consultant’s  execution  of  this  Agreement  to  revoke  this  Agreement  by
delivering written notice to the General Counsel of the Company.

4.3.

Non-Solicitation. The Consultant further acknowledges and agrees that, for the duration of the term
of this Agreement and for one (1) year thereafter, the Consultant shall not directly or indirectly (a) solicit, hire or
engage, or attempt to solicit, hire or engage, any individual as an employee, consultant, advisor, officer, manager,
managing partner, director or in any other similar capacity if such individual shall have been an employee of the
Company or any of its subsidiaries or controlled affiliates at any time during the one (1) year period prior to the

Page 4 of 17

Separation Date;  (b) solicit, induce or attempt to induce any customer, vendor, contractor, consultant or advisor of
the Company or any of its subsidiaries or controlled affiliates to terminate, diminish, or materially alter his, her or
its relationship with the Company or any of its subsidiaries or controlled affiliates; or (c) solicit, induce or attempt
to induce any potential customer, vendor, contractor, employee, consultant or advisor whose identity and potential
relationship with the Company or any of its subsidiaries or controlled affiliates the Consultant learned as a result
of  my  employment  with  the  Company,  not  to  establish,  or  to  diminish  or  materially  alter,  such  potential
relationship with the Company or any of its subsidiaries or controlled affiliates.  In the event that a court finds this
Section 4.3, or any of its restrictions, to be unenforceable or invalid, the Consultant and the Company agree that
(i) this Section 4.3 will be automatically modified to provide the Company with the maximum protection of its
business interests allowed by law and (ii) the Consultant shall be bound, and such court shall enforce, this Section
4.3 as so modified.

ARTICLE 5.  OWNERSHIP OF INVENTIONS

5.1.

Definition.  As  used  herein,  “Inventions”  shall  mean  all 

ideas,  discoveries,
developments,  methods,  data,  information,  improvements  and  biological  or  chemical  materials,  (whether  or  not
protectable under state, federal, or foreign patent, copyright, trade secrecy or similar laws) conceived, reduced to
practice  or  tangible  medium,  discovered  or  developed  by  the  Consultant  or  under  the  Consultant’s  direction
(whether  alone  or  with  others),  whether  or  not  or  on  the  premises  of  the  Company,  which  arise  out  of  the
Consultant’s Services.

inventions, 

5.2.

Disclosure  of  Inventions.  The  Consultant  shall  promptly  disclose  to  the  Company  any  and  all
Inventions and shall maintain adequate and current written records (in the form of notes, sketches, drawings or
otherwise as may be specified by the Company) to document the conception, reduction to practice, discovery or
development  of  any  Invention.  Such  records  shall  be  considered  Confidential  Information  of  the  Company
hereunder and shall be available to and remain the sole property of the Company at all times.

5.3.

Assignment and Cooperation. The Consultant acknowledges and agrees that all Inventions shall be
the  sole  property  of  the  Company.  The  Consultant  hereby  assigns  and,  if  relevant,  shall  cause  all  of  the
Consultant’s employees, officers and directors to assign to the Company (or any other person or entity designated
in writing by the Company) all of the Consultant’s and the Consultant’s representatives’ right, title and interest in
and  to  the  Inventions  and  any  and  all  related  patent  rights,  copyrights,  trademarks  and  other  industrial  and
intellectual property rights and applications and registrations therefor anywhere in the world. During and after the
Consultant’s engagement with the Company, the Consultant and/or Consultant’s employees, officers and directors,
as relevant, shall cooperate with the Company or its designee, at the Company’s request and expense, in obtaining
proprietary protection for the Inventions, including executing all documents which the Company shall reasonably
request in order to perfect the Company’s rights in the Inventions. The Consultant hereby appoints the Company
as the Consultant’s attorney to execute and deliver any such documents on the Consultant’s behalf in the event the
Consultant should fail or refuse to do so within a reasonable period following the Company’s request.

Page 5 of 17

ARTICLE 6.  CONFIDENTIAL INFORMATION AND MATERIALS

6.1.

Definitions.  As  used  herein,  “Confidential  Information”  shall  mean  any  scientific,  technical,
business,  financial  or  other  information  of  the  Company  or  its  affiliates  that  is  treated  by  the  Company  as
confidential or proprietary and that becomes known to or is developed by the Consultant in connection with the
Consultant’s  engagement  with  the  Company,  regardless  of  whether  such  information  is  specifically  labeled  or
identified  as  “Confidential”  or  prepared  in  full  or  in  part  by  the  Consultant  and  regardless  of  whether  such
information is in written, oral, electronic or other form. Confidential Information may include, without limitation,
trade  secrets,  know-how,  inventions,  technical  data  or  specifications,  testing  methods,  business  or  financial
information,  research  and  development  activities,  product  and  marketing  plans,  and  customer  and  supplier
information.  Any  similar  information  obtained  by  or  given  to  the  Company  about  or  belonging  to  its  suppliers,
licensors,  licensees,  partners,  affiliates,  customers,  potential  customers  or  others  shall  also  be  considered
Confidential Information. As used herein, “Materials” shall mean any biological or chemical materials which may
become  known  to  the  Consultant  in  connection  with  the  Consultant’s  engagement  with  the  Company  and  may
include, without limitation, any and all reagents, substances, chemical compounds, subcellular constituents, cells
or cell lines, organisms and progeny, mutants, derivatives or replications thereof or therefrom.

6.2.

Exceptions.  Confidential  Information  shall  not  include  information  which  the  Consultant  can

demonstrate:

(a)

(b)

was in the public domain prior to the time of its disclosure under this Agreement;

entered  the  public  domain  after  the  time  of  its  disclosure  under  this  Agreement  through

means other than an unauthorized disclosure resulting from an act or omission by the Consultant;

(c)

was  independently  developed  or  discovered  by  the  Consultant  outside  of  the  course  of

performing the Services prior to the time of its disclosure under this Agreement; or

(d)

is or was disclosed to the Consultant at any time, whether prior to or after the time of its
disclosure under this Agreement, by sources other than the Company and its affiliates having no duty of
confidentiality,  whether  direct  or  indirect,  with  respect  to  such  Confidential  Information  and  having  the
legal right to disclose such Confidential Information.

Notwithstanding  any  other  provision  hereof,  it  shall  not  be  a  violation  of  this  Agreement  for  the  Consultant  to
disclose  Confidential  Information  to  the  extent  such  disclosure  is  required  to  comply  with  applicable  laws  or
governmental  regulations,  provided  that  the  Consultant  provides  prior  written  notice  of  such  disclosure  to  the
Company and takes reasonable and lawful actions to avoid and/or minimize the extent of such disclosure.

6.3.

Ownership;  Consultant  Obligations.  The  Consultant  understands  that  the  Company  continually
obtains  and  develops  valuable  Confidential  Information  and  Materials.  The  Consultant  acknowledges  that  the
Consultant’s relationship with the Company is one of high

Page 6 of 17

trust and confidence and that in the course of the Consultant’s engagement and prior period of employment with
the Company, the Consultant has and will have access to and contact with Confidential Information and Materials.
The Consultant acknowledges that the Company is and shall at all times remain the sole owner of the Confidential
Information  and  Materials.  With  respect  to  all  Confidential  Information  and  Materials,  the  Consultant
acknowledges and agrees:

(a)

that all Confidential Information and all Materials, and all material or medium, including,
without  limitation,  all  files,  letters,  memoranda,  reports,  data,  forms,  manuals,  sketches,  laboratory
notebooks, computer records or files, and other records and any other written, photographic, electronic or
tangible material or medium, containing the Confidential Information or Materials prepared or compiled
by the Consultant or furnished to or accessible by the Consultant in the course of Consultant’s engagement
or  prior  period  of  employment  with  the  Company  are  and  shall  remain  the  exclusive  property  of  the
Company or the third party providing such Confidential Information or Materials to the Consultant or the
Company;

(b)

that  the  Consultant  shall  not  publish,  disclose  or  otherwise  make  available  to  any  third
party, any Confidential Information or Materials, except (i) to employees of the Company as required in
connection  with  the  performance  of  the  Services,  (ii)  to  third  parties,  such  as  clinical  sites  and  contract
research  organizations,  as  reasonably  required  in  connection  with  the  performance  of  the  Services,
provided  that  such  third  parties  and  the  Company  have  executed  a  confidential  disclosure  agreement
pursuant  to  which  such  third  parties  have  agreed  to  protect  the  confidentiality  of  such  Confidential
Information or (iii) as otherwise expressly authorized in writing by the Company;

(c)

that  the  Consultant  shall  not  use  such  Confidential  Information  or  Materials  for
Consultant’s own benefit, or for the benefit of any other person or business entity, or for any other purpose,
except for the performance of the Services to the Company and in accordance with any Company policies
given  to  the  Consultant  in  writing  with  respect  to  the  protection  of  such  Confidential  Information  or
Materials;

(d)

that the Consultant shall use the Confidential Information and Materials in accordance with

all applicable governmental laws, rules, and regulations; and

(e)

that  the  Consultant  will  exercise  all  reasonable  precautions  to  protect  the  integrity  and
confidentiality  of  Confidential  Information  and  Materials  in  Consultant’s  possession  and  not  to  remove
any  material  or  medium  containing  Confidential  Information  or  any  Materials  from  the  Company’s
premises except to the extent reasonably necessary to perform the Services.

Upon  the  termination  of  Consultant’s  engagement,  or  at  any  time  upon  the  Company’s  request,  the
Consultant shall return immediately to the Company any and all material or medium containing any Confidential
Information,  or  copies  thereof,  or  Material  then  in  Consultant’s  possession  or  under  Consultant’s  control,
provided,  however,  that  the  Consultant  may  retain  one  copy  of  such  Confidential  Information  solely  for  the
purpose of determining the extent of Consultant’s obligations hereunder.

Page 7 of 17

6.4.

Trade  Secrets;  Whistleblower  Protections.  In  accordance  with  18  U.S.C.  §1833,  notwithstanding
anything to the contrary in this Agreement or any other agreement between the Consultant and the Company or
any of its subsidiaries (together, the “Subject Documents”): (a) the Consultant will not be in breach of any Subject
Document, and shall not be held criminally or civilly liable under any federal or state trade secret law (i) for the
disclosure  of  a  trade  secret  that  is  made  in  confidence  to  a  federal,  state,  or  local  government  official  or  to  an
attorney solely for the purpose of reporting or investigating a suspected violation of law, or (ii) for the disclosure
of a trade secret that is made in a complaint or other document filed in a lawsuit or other proceeding, if such filing
is  made  under  seal;  and  (b)  if  the  Consultant  files  a  lawsuit  for  retaliation  by  the  Company  for  reporting  a
suspected violation of law, the Consultant may disclose the trade secret to the Consultant’s attorney, and may use
the  trade  secret  information  in  the  court  proceeding,  if  the  Consultant  files  any  document  containing  the  trade
secret under seal, and does not disclose the trade secret, except pursuant to court order. Furthermore, the Parties
agree that nothing in the Subject Documents prohibits the Consultant from reporting possible violations of federal
law  or  regulation  to  any  governmental  agency  or  entity  in  accordance  with  the  provisions  of  and  rules
promulgated  under  any  whistleblower  protection  provisions  of  state  or  federal  law  or  regulation  or  releases  or
restrains the Consultant’s right to receive an award for information provided to any such government agencies or
entities.

6.5.

Return of Property.   The  Consultant  affirms  that  the  Consultant  has  returned  to  the  Company  all
notes, memoranda, specifications, drawings, devices, formulas, and documents, together with all copies thereof,
any other material containing or disclosing any Confidential Information or Materials and any other physical or
personal  property  that  is  the  property  of  the  Company  that  the  Consultant  previously  had  in  the  Consultant’s
possession.

ARTICLE 7.  TERM AND TERMINATION

7.1.

Term. This Agreement shall commence on the Effective Date and shall remain in effect through the
first  anniversary  of  the  Effective  Date  (such  period,  the  “Consulting  Period”),  unless  earlier  terminated  in
accordance with the provisions of this Article 7.  Notwithstanding the foregoing, unless the Release Effective Date
occurs  on  or  prior  to  October  10,  2021,  the  Consulting  Period  shall  terminate  immediately  and  the  Consultant
shall not be entitled to be paid any of the compensation pursuant to Article 2 above regardless of the provision of
any Services prior to such date.

7.2.

Termination  by  Either  Party.  Either  Party  may  terminate  this  Agreement  upon  thirty  (30)  days’
prior  written  notice,  with  or  without  cause.  Notwithstanding  the  foregoing,  the  Company  may  terminate  this
Agreement immediately upon giving written notice of termination to the Consultant if the Consultant breaches or
threatens to breach any provision of Articles 3, 4, 5 or 6. In addition, the Company may terminate this Agreement
effective immediately upon written notice to the Consultant (or the Consultant’s legal representative) in the event
of death or legal incapacity of any designated the Consultant representative. Any termination for cause hereunder
shall be without prejudice to any right or remedy the terminating Party may otherwise have under this Agreement.

7.3.

Effect of Expiration or Termination. Upon expiration or termination of this Agreement, neither the

Consultant nor the Company shall have any further obligations under this

Page 8 of 17

Agreement,  except  for  liabilities  accrued  through  the  date  of  termination  (including  amounts  payable  to  the
Consultant pursuant to Article 2 through the termination date) and Articles 4, 5, 6,  and 10 and this Section 7.3
shall survive.

ARTICLE 8.  GOOD STANDING AND DEBARMENT

8.1.

Good Standing. The Consultant represents and warrants that the Consultant (i) shall comply with
all federal, state and local laws, rules, regulations and ordinances, and all professional standards, applicable to the
Services including, but not limited to, the Federal anti-kickback statute (21 U.S.C. § 1320a-7(a)); (ii) has a valid
state  medical  or  professional  license  and  is  currently  in  good  standing;  (iii)  has  not  been  subject  to  pending  or
final  adverse  action,  suspension,  revocation,  termination,  disciplinary  action  or  other  similar  action  by  any
healthcare  licensing  authority,  medical  board,  medical  society,  medical  association  or  accrediting  body;  and
(iv) has not been charged, convicted, pleaded guilty or no contest of a criminal offense related to the provision of
healthcare items or services, or is subject to any such pending action.

8.2.

Debarment.  The  Consultant  further  represents  and  warrants  that  the  Consultant:  (i)  has  not  been
convicted of an offense related to any federal or state healthcare program including, but not limited to those within
the scope of 42 U.S.C. § 1320a-7(a); (ii) is not currently excluded, debarred, suspended or otherwise ineligible to
participate in federal or state health care programs, including, but not limited to debarment under Section 306 of
the  Federal  Food  Drug  and  Cosmetic  Act  (21  U.S.C.  §  335(a))  or  in  Federal  procurement  or  non-procurement
programs by the Office of Inspector General or the General Services Administration; (iii) has not been excluded,
suspended or is other ineligible for federal or state healthcare program participation, including but not limited to,
persons identified on the General Services Administration’s List of Parties Excluded from Federal Programs or the
U.S.  Department  of  any  of  the  FDA  Clinical  Investigator  enforcement  lists,  including  but  not  limited  to,  the
Disqualified/Totally  Restricted  List,  Restricted  List,  or  Adequate  Assurances  List.  The  Consultant  immediately
shall notify the Company if at any time during the term of this Agreement the Consultant becomes aware that the
Consultant, or any person employed by Consultant, in connection with any work to be performed for or on behalf
of Company, has become or is (i) in the process of being charged, convicted, excluded, debarred, suspended or
otherwise  rendered  ineligible  to  participate  in  Federal  healthcare  programs  or  in  Federal  procurement  or  non-
procurement programs by the Office of Inspector General or the General Services Administration; (ii) subject to
disciplinary action by any healthcare licensing authority; (iii) subject to criminal charges related to the provision
of  healthcare  items  or  services;  or  (iv)  on  an  enforcement  list.  The  Consultant  agrees  to  promptly  inform  the
Company  in  writing  of  any  exclusion,  suspension,  conviction  or  other  event  that  makes  the  Consultant,  or  any
person  employed  by  the  Consultant,  ineligible  to  participate  during  the  terms  of  this  Agreement  in  Federal
healthcare  programs  or  in  Federal  procurement  or  non-procurement  programs,  or  if  any  action,  suit,  claim  or
investigation or proceeding relating to the foregoing is pending, or to the best of the Consultant’s knowledge is
threatened.

ARTICLE 9.  RELEASE OF CLAIMS

9.1.

Release of Claims. In consideration of the Company’s agreement to enter into this Agreement, the

Consultant, on the Consultant’s own behalf and on behalf of any of the

Page 9 of 17

Consultant’s affiliated companies or entities and any of the Consultant’s or their respective heirs, family members,
executors,  agents  and  assigns,  hereby  and  forever  releases  the  Company  and  any  of  its  direct  or  indirect
subsidiaries and affiliates, and any of its or their respective current and former officers, directors, equity holders,
managers,  employees,  agents,  investors,  attorneys,  shareholders,  administrators,  affiliates,  benefit  plans,  plan
administrators,  insurers,  trustees,  divisions,  and  subsidiaries  and  predecessor  and  successor  corporations  and
assigns  (collectively,  the  “Releasees”)  from,  and  agrees  not  to  sue  concerning,  or  in  any  manner  to  institute,
prosecute,  or  pursue,  any  disputes,  claims,  complaints,  grievances,  charges,  actions,  petitions,  and  demands
(collectively, “Claims”), whether presently known or unknown, suspected or unsuspected, that the Consultant may
possess  against  any  of  the  Releasees  arising  from  any  omissions,  acts,  facts,  or  damages  that  have  occurred  up
until and including the date the Consultant signs this Agreement, including, without limitation:

(a)

any and all Claims relating to or arising from the Consultant’s prior employment or service
relationship with the Company or any of its direct or indirect subsidiaries or affiliates and the termination
of that relationship;

(b)

any and all Claims relating to, or arising from, the Consultant’s right to purchase, or actual
purchase of any shares of stock or other equity interests of the Company or any of its affiliates, including,
without limitation, any Claims for fraud, misrepresentation, breach of fiduciary duty, breach of duty under
applicable state corporate law, and securities fraud under any state or federal law;

(c)

any  and  all  Claims  for  wrongful  discharge  of  employment;  termination  in  violation  of
public policy; discrimination; harassment; retaliation; breach of contract, both express and implied; breach
of  covenant  of  good  faith  and  fair  dealing,  both  express  and  implied;  promissory  estoppel;  negligent  or
intentional infliction of emotional distress; fraud; negligent or intentional misrepresentation; negligent or
intentional  interference  with  contract  or  prospective  economic  advantage;  unfair  business  practices;
defamation;  libel;  slander;  negligence;  personal  injury;  assault;  battery;  invasion  of  privacy;  false
imprisonment; conversion; and disability benefits;

(d)

any and all Claims for violation of any federal, state, or municipal statute, including, but not
limited to, Title VII of the Civil Rights Act of 1964; the Civil Rights Act of 1991; the Rehabilitation Act of
1973; the Americans with Disabilities Act of 1990; the Equal Pay Act; the Fair Credit Reporting Act; the
Age Discrimination in Employment Act of 1967 (the “ADEA”); the Older Workers Benefit Protection Act;
the  Employee  Retirement  Income  Security  Act  of  1974;  the  Worker  Adjustment  and  Retraining
Notification  Act;  the  Family  and  Medical  Leave  Act;  the  Sarbanes-Oxley  Act  of  2002;  and  the
Massachusetts Fair Employment Practices Act;

(e)

(f)

any and all Claims for violation of the federal or any state constitution;

any and all Claims arising out of any other laws and regulations relating to employment or

employment discrimination;

Page 10 of 17

(g)

any Claim for any loss, cost, damage, or expense arising out of any dispute over the non-
withholding  or  other  tax  treatment  of  any  of  the  proceeds  received  by  the  Consultant  as  a  result  of  this
Agreement;

(h)

any and all Claims arising out of the wage and hour and wage payment laws and regulations
of the state or states in which the Consultant has provided service to the Company or any of its affiliates,
including without limitation the Massachusetts Payment of Wages Law; and

(i)

any and all Claims for attorneys’ fees and costs.

The Consultant agrees that the release set forth in this Section shall be and remain in effect in all respects
as a complete general release as to the matters released. This release does not release (i) the Consultant’s right to
report possible violations of federal law or regulation to any governmental agency or entity in accordance with the
provisions  of  and  rules  promulgated  under  any  whistleblower  protection  provisions  of  state  or  federal  law  or
regulation (including the Consultant’s right to receive an award for information provided to any such government
agencies  or  entities),  (ii)  the  Consultant’s  right  to  file  a  charge  with  or  participate  in  a  charge,  investigation  or
proceeding by the Equal Employment Opportunity Commission, or any other local, state, or federal administrative
body or government agency that is authorized to enforce or administer laws related to employment, against the
Company  (with  the  understanding  that  the  Consultant’s  release  of  claims  herein  bars  the  Consultant  from
recovering monetary or other individual relief from the Company or any Releasee in connection with any charge,
investigation or proceeding, or any related complaint or lawsuit, filed by the Consultant or by anyone else on the
Consultant’s behalf before the federal Equal Employment Opportunity Commission or a comparable state or local
agency), (iii) Claims for any state unemployment insurance benefits or disability insurance benefits pursuant to
the terms of applicable state law, (iv) Claims to continued participation in certain of the Company’s group benefit
plans pursuant to the terms and conditions of Consolidated Omnibus Budget Reconciliation Act of 1985, (v) any
other  Claims  that  cannot  be  released  by  private  agreement  under  applicable  law,  but  only  to  the  extent  such
Claims cannot be released under such law, (vi) Claims under this Agreement and (vii) Claims for indemnification
by  the  Company  pursuant  to  contract,  directors’  and  officers’  insurance,  the  Company’s  amended  and  restated
certificate of incorporation or amended and restated bylaws or applicable law.

9.2.

Acknowledgment  of  Waiver  of  Claims  under  ADEA.  The  Consultant  understands  and
acknowledges that the Consultant is waiving and releasing any rights the Consultant may have under the ADEA,
and that this waiver and release is knowing and voluntary. The Consultant understands and agrees that this waiver
and release does not apply to any rights or Claims that may arise under the ADEA after the date the Consultant
signs this Agreement. The Consultant understands and acknowledges that the consideration given for this waiver
and release is in addition to anything of value to which the Consultant was already entitled. The Consultant further
understands and acknowledges that the Consultant has been advised by this writing that: (a) the Consultant should
consult  with  an  attorney  prior  to  executing  this  Agreement;  (b)  the  Consultant  has  21  days  within  which  to
consider this Agreement, and the Parties expressly agree that such time period to review this Agreement shall not
be extended upon any material or immaterial changes to this Agreement; (c) the Consultant has seven

Page 11 of 17

business  days  following  the  Consultant’s  execution  of  this  Agreement  to  revoke  this  Agreement  by  delivering
written  notice  to  the  General  Counsel  of  the  Company;  (d)  this  Agreement  shall  not  be  effective  until  after  the
revocation  period  has  expired  (such  effective  date,  the  “Release  Effective  Date”);  and  (e)  nothing  in  this
Agreement prevents or precludes the Consultant from challenging or seeking a determination in good faith of the
validity of this waiver under the ADEA, nor does it impose any condition precedent, penalties, or costs for doing
so, unless specifically authorized by federal law. In the event the Consultant signs this Agreement and returns it to
the  Company  in  less  than  the  21-day  period  identified  above,  the  Consultant  hereby  acknowledges  that  the
Consultant has freely and voluntarily chosen to waive the time period allotted for considering this Agreement.

ARTICLE 10.  MISCELLANEOUS

10.1.

Indemnification. The Company agrees to defend, indemnify and hold harmless the Consultant from
any third party actions, suits, claims, demands, prosecutions, liabilities and fines (including reasonable attorneys’
fees) (collectively, “Claims”) arising directly out of or in connection with this Agreement, provided however, that
this indemnification shall not extend to any Claims arising as a direct result of any breach of any representation or
warranty made by the Consultant or its representatives hereunder or any negligence or intentional wrongful acts or
omissions on the part of the Consultant or its representatives. The foregoing indemnification shall be contingent
upon  the  Consultant  providing  the  Company  with  prompt  written  notice  of  such  Claims  and  sole  authority  to
defend  and/or  settle  any  such  Claims.  Notwithstanding  the  foregoing,  the  Company  shall  not  settle  any  Claim
which would result in an admission of liability on the part of the Consultant without the Consultant’s prior written
consent.

10.2.

Independent Contractor.  The  Consultant  is  an  independent  contractor  under  this  Agreement.  The
Consultant is not any employee or agent of the Company and as a result will not be entitled to participate in, or
receive  any  benefit,  coverage,  privilege  or  right  as  an  employee,  including  without  limitation,  social  security,
unemployment,  medical,  pension,  or  under  any  employee  benefit  or  welfare  plan  of  the  Company  nor  have
authority to represent or bind the Company in any manner in dealings with third parties. The Consultant shall have
sole  responsibility  for  payment  of  all  federal,  state  and  local  taxes  or  contributions  imposed  or  required  under
unemployment insurance, social security and income tax laws and for filing all required tax forms with respect to
any  amounts  paid  by  the  Company  to  the  Consultant  for  the  Services  hereunder.  The  Consultant  confirms  and
acknowledges that the Consultant has read and understands the Company’s Insider Trading Policy and agrees to
comply with the requirements and obligations applicable to the Consultant thereunder.

10.3. Non-Referral. The Parties agree that the Consultant is under no obligation to solicit, refer or solicit
referrals  of  patients  for  any  Company  business.  The  Consultant  will  not  receive  any  benefit  of  any  kind  for
making  any  referrals  nor  suffer  any  detriment  for  not  making  such  referrals.  The  Parties  further  agree  that  no
amount paid hereunder is intended to be, nor shall be construed as, an inducement or payment for referral of or
recommending referral of patients for any Company business by the Consultant to Company (or its affiliates) or
by  Company  (or  its  affiliates)  to  the  Consultant.  In  addition,  the  fees  charged  hereunder  do  not  include  any
discount, rebate, kickback or other reduction in charge, and the fees charged hereunder are not intended to be, nor
shall they be construed as, an inducement or payment for

Page 12 of 17

referral,  or  recommendation  of  referral,  of  business  by  the  Consultant  to  Company  (or  its  affiliates)  or  by
Company (or its affiliates) to the Consultant. The sole purpose of the fee paid to the Consultant hereunder is to
pay fair market value for the time and effort the Consultant will spend.

10.4. Anti-Bribery  Laws.  Consultant  shall  comply  with  the  requirements  of  all  applicable  anti-bribery
legislation both national and foreign, including but not limited to the U.S. Foreign Corrupt Practices Act and the
U.K. Bribery Act Consultant (“Anti-Bribery Laws”), and Consultant has not and will not make, promise or offer
to make any payment or transfer anything of value (directly or indirectly) to (a) any individual, (b) corporation,
(c) association, (d) partnership, or (e) public body (including but not limited to any officer or employee of any of
the foregoing) who, acting in their official capacity or of their own accord, are in a position to influence, secure or
retain any business for (and/or provide any financial or other advantage to) Company by improperly performing a
function  of  a  public  nature  or  a  business  activity  with  the  purpose  or  effect  of  public  or  commercial  bribery,
acceptance  of  or  acquiescence  in  extortion,  kickbacks  or  other  unlawful  or  improper  means  of  obtaining  or
retaining business.

10.5. Notices. All notices to be given pursuant to this Agreement shall be in writing and shall be deemed
to have been duly given to a Party (a) upon delivery if delivered by hand, (b) five business days after mailed by
registered or certified mail, return receipt requested, postage prepaid, or (c) one business day after mailing via any
reputable overnight delivery service, postage prepaid and with delivery confirmation, in each case to such Party at
its address set forth herein or at such other address as such Party shall have designated by notice in writing to the
other Party.

10.6. Severability. If any one or more of the provisions of this Agreement shall, for any reason, be held
to be invalid, illegal or unenforceable in any respect, such invalidity, illegality or unenforceability shall not affect
any other term or provision of this Agreement, and all other provisions shall remain in full force and effect. If any
provision in this Agreement shall be held to be excessively broad, it shall be construed by limiting it so as to be
enforceable to the extent compatible with applicable law.

10.7. Captions.  Captions  of  Articles  and  Sections  of  this  Agreement  have  been  added  only  for
convenience, shall not be deemed to be a part of this Agreement, and shall not be admissible for the purpose of
proving the intent of the Parties.

10.8. Complete Agreement; Amendments. This Agreement, including any Schedules hereto, constitutes
the  entire  agreement  between  the  Parties  with  respect  to  the  subject  matter  hereof  and  supersedes  all  prior
agreements  with  respect  to  the  subject  matter  of  this  Agreement.  This  Agreement  may  not  be  modified  or
amended except in a writing signed by both Parties. Industry regulations or other considerations may require that
Company update this Agreement from time to time. In such cases, the Consultant will receive a new Consulting
Agreement to review and sign, which will supersede and replace the existing Agreement.

10.9. Rights of Publicity. Neither Party shall have the right to use the other Party’s name or likeness in
any publications, publicity or other materials or presentations without obtaining the prior written consent of other
Party.

Page 13 of 17

10.10. Applicable Law. This Agreement shall be considered to have been made in the United States, and
shall  be  interpreted  in  accordance  with  the  laws  of  the  Commonwealth  of  Massachusetts,  United  States  of
America, without regard to its conflicts of laws principles.

10.11. Nonwaiver Provision. The waiver by either Party hereto of any right hereunder or of the failure to
perform  or  of  a  breach  by  the  other  Party  shall  not  be  deemed  a  waiver  of  any  other  right  hereunder  or  of  any
other breach or failure by said other Party whether of a similar nature or otherwise.

10.12. Assignment. Neither this Agreement nor any rights or obligations hereunder shall be assignable by
either Party hereto without the prior written consent of the other Party, except that the Company may assign this
Agreement to a subsidiary or affiliate or in connection with the merger, consolidation or sale of all or substantially
all of its business or assets to which the Services relate.

10.13. Counterparts. This Agreement may be executed in one or more counterparts, each of which shall be

deemed an original and all of which together shall be deemed to be one and the same instrument.

10.14. Legal  and  Equitable  Relief.  The  Parties  acknowledge  and  agree  that  the  restrictions  contained  in
Articles  3,  4,  5,  and  6  of  this  Agreement  are  necessary  for  the  protection  of  the  business  and  goodwill  of  the
Company and are reasonable for such purpose. The Consultant acknowledges and agrees that any breach of any of
the  foregoing  such  provisions  by  the  Consultant  may  cause  substantial  and  irreparable  injury  to  the  Company;
such  injury  may  be  difficult  to  measure;  and  monetary  damages,  even  if  ascertainable,  may  be  inadequate
compensation for such injury. Therefore, in the event of any breach by the Consultant of any such provision, the
Company shall be entitled (in addition to monetary damages and to any other remedies available to the Company
under this Agreement and at law) to seek equitable relief, including injunctive relief.

10.15. Transparency Reporting Requirements. The Consultant acknowledges that applicable Federal and
State  disclosure  and  reporting  laws,  regulations  and  industry  guidelines  may  require  Company  to  collect  and
report to government agencies any direct or indirect payment or transfer of value it makes to certain healthcare
providers  and  organizations  (collectively  “Financial  Transparency  Laws”),  which  include  without  limitation,
relevant  provisions  of  the  Affordable  Care  Act  of  2010  and  its  implementing  regulations.  Notwithstanding
anything  to  the  contrary  herein,  Company  may  disclose,  without  prior  notification  to  the  Consultant,  any
information relating to this Agreement that Company reasonably believes is necessary to comply with Financial
Transparency Laws and that this information may be posted on governmental websites or otherwise made publicly
available. The Consultant shall cooperate with Company in its compliance with Financial Transparency Laws in
connection with this Agreement and consents and agrees to Company’s disclosure of all payments and transfers of
value received by the Consultant from Company. The Consultant shall promptly provide Company, in the format
Company  requests,  with  any  information  that  Company  reasonably  believes  it  needs  to  comply  with  Financial
Transparency  Laws  in  connection  with  this  Agreement.  Without  limiting  the  generality  of  the  foregoing,  such
information may include information that relates to any Third Party healthcare provider and/or

Page 14 of 17

organization  that  receives  any  direct  or  indirect  payment  or  other  transfer  of  value  from  or  on  behalf  of  the
Consultant  in  connection  with  this  Agreement  where  Company  reasonably  believes  that  such  payment  and/or
transfer of value must be reported under Financial Transparency Laws.

Page 15 of 17

IN  WITNESS  WHEREOF,  the  Company  and  the  Consultant  have  duly  executed  and  delivered  this

Agreement as of the date first written above.

RHYTHM PHARMACEUTICALS, INC.

     CONSULTANT:

By:
Name: David Meeker
Title: President and Chief Executive Officer
Date:

By:
Name: Murray Stewart, D.M., F.R.C.P.

Date:

Page 16 of 17

Grant Date

10/15/2018
2/13/2019
2/14/2020
6/30/2020
2/11/2021
2/11/2021

Award Type
Option
Option
Option
RSU
Option
RSU

SCHEDULE A

Equity Awards

Exercise Price
$26.54
$29.78
$17.87
N/A
$30.66
N/A

Vested
Shares*
68,750
37,500
33,000
0
7,031
0

Shares Eligible to
Vest**
0
0
0
25,000
0
2,344

* Represents the number of shares of the Company’s common stock as to which the Equity Award was vested as

of the Separation Date.

** Represents the maximum number of shares of the Company’s common stock as to which the Equity Award
will  be  eligible  to  vest  during  the  term  of  the  Agreement  in  accordance  with  its  original  vesting  schedule,
subject to the terms of the Agreement and the Consultant’s continued Services through the applicable vesting
date(s).

Page 17 of 17

Exhibit 21.1

Subsidiaries of Rhythm Pharmaceuticals, Inc.

Entity
Rhythm Pharmaceuticals Limited
Rhythm Securities Corp.
Rhythm Pharmaceuticals Netherlands, B.V.
Rhythm Pharmaceuticals UK Limited
Rhythm Pharmaceuticals France SAS
Rhythm Pharmaceuticals Italy S.r.L.
Rhythm Pharmaceuticals Canada Inc.

Jurisdiction of Organization or Incorporation
Ireland
Massachusetts
The Netherlands
United Kingdom
France
Italy
Canada

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Exhibit 23.1

We consent to the incorporation by reference in the following Registration Statements:

(1) Registration Statement (Form S-3 No. 333-260689) of Rhythm Pharmaceuticals, Inc.,

(2) Registration Statement (Form S-8 No. 333-253709) pertaining to the 2017 Equity Incentive Plan of Rhythm

Pharmaceuticals, Inc.,

(3) Registration Statement (Form S-8 No. 333-236829) pertaining to the 2017 Equity Incentive Plan and the 2017

Employee Stock Purchase Plan of Rhythm Pharmaceuticals, Inc.,

(4) Registration Statement (Form S-8 No. 333-229642) pertaining to the 2017 Equity Incentive Plan and the 2017

Employee Stock Purchase Plan of Rhythm Pharmaceuticals, Inc.,

(5) Registration Statement (Form S-8 No. 333-223647) pertaining to the 2017 Equity Incentive Plan of Rhythm

Pharmaceuticals, Inc., and

(6) Registration Statement (Form S-8 No. 333-220925) pertaining to the 2017 Equity Incentive Plan and the 2017

Employee Stock Purchase Plan of Rhythm Pharmaceuticals, Inc.;

of our reports dated March 1, 2022, with respect to the consolidated financial statements of Rhythm Pharmaceuticals,
Inc. and the effectiveness of internal control over financial reporting of Rhythm Pharmaceuticals, Inc. included in this
Annual Report (Form 10-K) of Rhythm Pharmaceuticals, Inc. for the year ended December 31, 2021.

/s/ Ernst & Young LLP

Boston, Massachusetts
March 1, 2022

Exhibit 31.1

CERTIFICATION

I, David P. Meeker M.D., certify that:

1.  I have reviewed this annual report on Form 10-K of Rhythm Pharmaceuticals, Inc.;

2.  Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a

material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not
misleading with respect to the period covered by this report;

3.  Based on my knowledge, the financial statements, and other financial information included in this report, fairly

present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the
periods presented in this report;

4.  The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls 

and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as 
defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:  

(a)  Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be
designed under our supervision, to ensure that material information relating to the registrant, including its consolidated
subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being
prepared;

(b)  Designed such internal control over financial reporting, or caused such internal control over financial 

reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial 
reporting and the preparation of financial statements for external purposes in accordance with generally accepted 
accounting principles;

(c)  Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report

our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by
this report based on such evaluation; and

(d)  Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred 
during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that 
has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; 
and  

5.  The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal
control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or
persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over 
financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and 
report financial information; and  

(b)  Any fraud, whether or not material, that involves management or other employees who have a significant role

in the registrant’s internal control over financial reporting.

Date:  March 1, 2022

/s/ David P. Meeker M.D.
Name: David P. Meeker M.D.
Title:  Chief Executive Officer and President
          (Principal Executive Officer)

Exhibit 31.2

CERTIFICATION

I, Hunter C. Smith, certify that:

1.  I have reviewed this annual report on Form 10-K of Rhythm Pharmaceuticals, Inc.;  

2.  Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a

material fact necessary to make the statements made, in light of the circumstances under which such statements were made,
not misleading with respect to the period covered by this report;

3.  Based on my knowledge, the financial statements, and other financial information included in this report, fairly

present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the
periods presented in this report;

4.  The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure 
controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial 
reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:  

(a)  Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be 
designed under our supervision, to ensure that material information relating to the registrant, including its consolidated 
subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is 
being prepared;  

(b)  Designed such internal control over financial reporting, or caused such internal control over financial 

reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial 
reporting and the preparation of financial statements for external purposes in accordance with generally accepted 
accounting principles;

(c)  Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report 

our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by 
this report based on such evaluation; and  

(d)  Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred 
during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that 
has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial 
reporting; and  

5.  The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal 
control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or 
persons performing the equivalent functions):  

(a)  All significant deficiencies and material weaknesses in the design or operation of internal control over 

financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize 
and report financial information; and  

(b)  Any fraud, whether or not material, that involves management or other employees who have a significant

role in the registrant’s internal control over financial reporting.  

Date:  March 1, 2022

/s/ Hunter C. Smith
Name: Hunter C. Smith
Title:   Chief Financial Officer
           (Principal Financial Officer)

Exhibit 32.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER
PURSUANT TO 18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I,  David P. Meeker M.D., certify pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the
Sarbanes-Oxley Act of 2002, that, to my knowledge, this Annual Report on Form 10-K of Rhythm Pharmaceuticals, Inc.
for  the  fiscal  year  ended  December  31,  2021  fully  complies  with  the  requirements  of  Section  13(a)  or  15(d)  of  the
Securities Exchange Act of 1934 and the information contained in such Form 10-K fairly presents, in all material respects,
the financial condition and results of operations of Rhythm Pharmaceuticals, Inc.

/s/ David P. Meeker M.D.
Name: David P. Meeker M.D.
Title:   Chief Executive Officer and President
          (Principal Executive Officer) 

March 1, 2022

Exhibit 32.2

CERTIFICATION OF CHIEF FINANCIAL OFFICER
PURSUANT TO 18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I,  Hunter  C.  Smith,  certify  pursuant  to  18  U.S.C.  Section  1350,  as  adopted  pursuant  to  Section  906  of  the
Sarbanes-Oxley Act of 2002, that, to my knowledge, this Annual Report on Form 10-K of Rhythm Pharmaceuticals, Inc.
for  the  fiscal  year  ended  December  31,  2021  fully  complies  with  the  requirements  of  Section  13(a)  or  15(d)  of  the
Securities Exchange Act of 1934 and the information contained in such Form 10-K fairly presents, in all material respects,
the financial condition and results of operations of Rhythm Pharmaceuticals Inc.

/s/ Hunter C. Smith
Name: Hunter C. Smith
Title:   Chief Financial Officer
           (Principal Financial Officer)

March 1, 2022