Quarterlytics / Healthcare / Biotechnology / Blueprint Medicines

Blueprint Medicines

bpmc · NASDAQ Healthcare
Claim this profile
Ticker bpmc
Exchange NASDAQ
Sector Healthcare
Industry Biotechnology
Employees 501-1000
← All annual reports
FY2016 Annual Report · Blueprint Medicines
Sign in to download
Loading PDF…
B

L

U

E

P

R

I

N

T

M

E

D

I

C

I

N

E

S

C

O

R

P

O

R

A

T

I

O

N

2

0

1

6

A

N

N

U

A

L

R

E

P

O

R

T

Blueprint Medicines Corporation

38 Sidney Street, Suite 200

Cambridge, MA 02139

(617) 374-7580

blueprintmedicines.com

NASDAQ: BPMC

ANNUAL REPORT 
NASDAQ: BPMC

 
 
 
 
 
 
To our
stockholders

At Blueprint Medicines, we are striving to 

create a blueprint for a healthier tomorrow.

We seek to create transformative medicines for genomically 

defined patient populations by specifically targeting the 

molecular drivers of disease. By leveraging our proprietary 

compound library and genomics expertise, we are able to 

rapidly move from the bench to clinical proof-of-concept. 

Our culture and values put patients first, and we are driven by a 

deep sense of urgency to develop new medicines for unserved 

or underserved patients. In 2016, we generated early data that 

show our scientific approach could be prolific and may 

represent a substantial opportunity for developing new and 

transformative drugs for cancer, rare genetic diseases and 

other disease areas including cancer immunology.

Senior Vice President, Human Resources

Executive Vice President, Chief Legal Officer

Executive Leadership

Jeff Albers

Chief Executive Officer and President

Anthony L. Boral, M.D., Ph.D.

Chief Medical Officer

Marion Dorsch, Ph.D.

Chief Scientific Officer

Debbie Durso-Bumpus

Board of Directors

Daniel Lynch

Chairman, Blueprint Medicines Corporation

Jeff Albers

Chief Executive Officer and President, 

Blueprint Medicines Corporation

Alexis Borisy

Partner, Third Rock Ventures

Lonnel Coats

Chief Executive Officer and President, 

Lexicon Pharmaceuticals, Inc.

George D. Demetri, M.D.

Professor of Medicine, Harvard Medical School, 

and Director of the Center for Sarcoma and Bone 

Oncology, Dana-Farber Cancer Institute

Annual Meeting of Stockholders

The 2017 annual meeting of stockholders will be 

held on Tuesday, June 20, 2017, at 3:00 p.m. EDT at 

Blueprint Medicines’ headquarters, which are located 

at 38 Sidney Street, Suite 200, Cambridge, MA 02139.

SEC Form 10-K

A copy of Blueprint Medicines’ Form 10-K filed with 

the Securities and Exchange Commission is available 

free of charge from the company’s Investor Relations 

Department by calling (617) 714-6674, emailing 

ir@blueprintmedicines.com or sending a written 

request to:

Investor Relations

Blueprint Medicines Corporation

38 Sidney Street, Suite 200

Cambridge, MA 02139

Kate Haviland

Chief Business Officer

Mike Landsittel

Vice President, Finance

Christoph Lengauer, Ph.D.

Executive Vice President

Tracey L. McCain, Esq.

Mark Goldberg, M.D.

Associate Professor of Medicine, 

Harvard Medical School

Nicholas Lydon, Ph.D.

Co-Founder, 

Blueprint Medicines Corporation

Charles A. Rowland, Jr.

Former Chief Executive Officer, 

Aurinia Pharmaceuticals Inc.

Lynn Seely, M.D.

Chief Executive Officer and President, 

Myovant Sciences, Inc.

Stock Listing

NASDAQ: BPMC

Independent Auditors

Ernst & Young LLP

Transfer Agent

The transfer agent is responsible, among other  things, for 

handling stockholder questions regarding lost stock 

certificates, address changes, including duplicate mailings, 

and changes in ownership or name in which shares are 

held. These requests may be directed to the transfer agent 

at the following address:

Computershare Trust Company, N.A. 

250 Royall Street

Canton, MA 02021

www-us.computershare.com/contactus

Cautionary Note Regarding Forward-Looking Statements

This annual report contains forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995, as amended, including, without limitation, statements regarding plans 

and timelines for the clinical development of BLU-285, BLU-554 and BLU-667, and Blueprint Medicines’ ability to implement those clinical development plans; plans and timelines for regulatory 

submissions, filings or discussions; plans and timelines for current or future discovery programs; plans and timelines for future collaborations, if any, with strategic partners; Blueprint Medicines’ 

future financial performance; expectations regarding potential milestones in 2017; expectations regarding Blueprint Medicines’ existing cash, cash equivalents and investments; and Blueprint 

Medicines’ strategy, business plans and focus. The words “may,” “will,” “could,” “would,” “should,” “expect,” “plan,” “anticipate,” “intend,” “believe,” “estimate,” “predict,” “project,” “potential,” “continue,” 

“target” and similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words. Any forward-looking statements 

in this annual report are based on management’s current expectations and beliefs and are subject to a number of risks, uncertainties and important factors that may cause actual events or results 

to differ materially from those expressed or implied by any forward-looking statements contained in this annual report, including, without limitation, risks and uncertainties related to the delay of 

any current or future clinical trials or the development of Blueprint Medicines’ drug candidates, including BLU-285, BLU-554 and BLU-667; Blueprint Medicines’ advancement of multiple early-stage 

efforts; Blueprint Medicines’ ability to successfully demonstrate the efficacy and safety of its drug candidates; the preclinical and clinical results for Blueprint Medicines’ drug candidates, which 

may not support further development of such drug candidates; actions or decisions of regulatory agencies or authorities, which may affect the initiation, timing and progress of current or future 

clinical trials; Blueprint Medicines’ ability to obtain, maintain and enforce patent and other intellectual property protection for any drug candidates it is developing; Blueprint Medicines’ ability to 

develop and commercialize companion diagnostics for its current and future drug candidates, including a companion diagnostic for BLU-554 with Ventana Medical Systems, Inc. and a companion 

diagnostic for BLU-285 with QIAGEN Manchester Limited; and the success of Blueprint Medicines’ rare genetic disease collaboration with Alexion Pharma Holding and its cancer immunotherapy 

collaboration with F. Hoffmann-La Roche Ltd and Hoffmann-La Roche Inc.

These and other risks and uncertainties are described in greater detail in the section entitled "Risk Factors" in Blueprint Medicines’ Annual Report on Form 10-K for the year ended December 31, 

2016, as filed with the Securities and Exchange Commission (SEC) on March 9, 2017, and other filings that Blueprint Medicines may make with the SEC in the future. Any forward-looking 

statements contained in this annual report represent Blueprint Medicines’ views only as of April 28, 2017, and should not be relied upon as representing its views as of any subsequent date. Except 

as required by law, Blueprint Medicines assumes no obligation to update or revise these forward-looking statements for any reason, even if new information becomes available in the future.

© Blueprint Medicines Corporation      April 28, 2017

Powerful Precision

The year 2016 was a pivotal one, in which we accomplished all of our goals and made significant 

progress toward developing potentially transformative medicines for a number of rare cancers and 

other diseases. In the fourth quarter, we presented encouraging clinical proof-of-concept data from 

three Phase 1 trials evaluating BLU-285 for the treatment of unresectable 

gastrointestinal stromal tumors (GIST), BLU-285 for the treatment of 

advanced systemic mastocytosis (SM) and BLU-554 for the treatment 

of advanced hepatocellular carcinoma (HCC). These trials continue 

to enroll patients and generate important insights into the 

safety and clinical activity of BLU-285 and BLU-554.

In addition, we continued to advance and expand 

our diverse pipeline, which we believe is 

substantial for a company of our age. Recently, 

we enrolled the first patient in a Phase 1 

clinical trial of BLU-667, our third 

clinical-stage drug candidate, which 

targets RET mutations and fusions. 

This trial is now actively enrolling 

patients with non-small cell lung cancer, 

medullary thyroid cancer and other 

advanced solid tumors characterized by 

RET alterations. BLU-667 is specifically 

designed to be equipotent against 

wild-type RET mutants and fusions as well 

as predicted resistant mutants. This design 

allows BLU-667 to potentially offer patients 

profound, durable responses to therapy. In 

addition, we entered into a strategic collaboration 

with Roche early last year encompassing up to five 

programs targeting immunokinases, which are believed 

to be important in cancer immunotherapy. 

When Blueprint Medicines was founded, we established an 

Jeff Albers, President and CEO

ambitious vision to improve the lives of patients with genomically 

defined diseases. In 2017, this vision will come into clearer focus. We 

expect a cadence of data updates for BLU-285 and BLU-554 as these programs 

advance in the clinic. In parallel, we plan to work closely with U.S. and European regulatory 

authorities to determine the most efficient development path forward for both programs. 

The Drive to Make Discovery Faster

Importantly, we have maintained a strong financial position to enable us to continue to advance our existing 

clinical programs while also investing in ongoing discovery efforts. We ended 2016 with cash, cash 

equivalents and investments of $268.2 million, which included net proceeds of approximately $134.5 million 

from our December 2016 follow-on public offering. In April 2017, we received net proceeds of approximately 

$215.6 million upon the closing of a subsequent follow-on public offering. Based on our current plans, we 

expect that our existing cash, cash equivalents and investments will be sufficient to enable us to fund our 

operating expenses and capital expenditure requirements into the second half of 2019.

In addition, we continue to explore a range of strategic collaboration opportunities to maximize the value 

of our programs and allow us to move our drug candidates more quickly toward potential approval and 

into the hands of patients and physicians worldwide.

A Promise to Change the Paradigm

With scientific expertise, technical precision and passion, our people drive Blueprint Medicines forward. 

Over the past year, we rounded out our executive management team with several key appointments, 

including chief scientific and legal officers. In addition, we continue to hire talent across our business, 

while maintaining a collaborative culture defined by a sense of urgency. In fact, with the encouraging early 

data from our Phase 1 trials for BLU-285 and BLU-554, our team is more motivated than ever to move 

faster and work harder each and every day.

As we look back on all that we have accomplished, I would like to say thank you to our employees, 

scientific and clinical collaborators, board members and stockholders for supporting our vision 

to improve the lives of patients with genomically defined diseases. Most importantly, we 

want to thank the patients, families and physicians who participate in our clinical trials. 

We recognize that we could not be successful without them. 

The year 2016 was transformative for Blueprint Medicines, and in 2017, 

we are poised to build on that momentum. Looking forward, the journey 

to realize the promise of our vision is still just beginning, and we are 

excited to share updates with you on our continued progress.

Sincerely,

Jeffrey W. Albers

President and Chief Executive Officer

Robust pipeline of diverse assets

DRUG CANDIDATE

DISCOVERY

PRECLINICAL

CLINICAL

COMMERCIAL RIGHTS

BLU-285
Inhibitor of KIT, 
including exon 17 mutations, 
and PDGFRα, including 
the D842V mutation

PDGFRα-DRIVEN GIST

KIT-DRIVEN GIST

SYSTEMIC MASTOCYTOSIS

PHASE 1

PHASE 1

PHASE 1

BLU-554
Inhibitor of FGFR4

BLU-667
Inhibitor of RET fusions, 
mutations and resistant mutants 

HEPATOCELLULAR CARCINOMA

PHASE 1

NSCLC AND THYROID*

PHASE 1

PRKACA
Inhibitor of PRKACA fusions

FLC

Cancer immunotherapy
Immunokinases

UP TO 5 PROGRAMS, STAGE UNDISCLOSED

Rare genetic disease

TARGET AND DEVELOPMENT STAGE UNDISCLOSED

†

*Phase 1 trial includes a basket cohort which consists of other advanced solid tumors with RET alterations. 
†Blueprint Medicines has U.S. commercialization rights for up to two programs. Roche has worldwide commercialization rights for up to three programs and ex-U.S. 
commercialization rights for up to two programs.
FLC = Fibrolamellar carcinoma. GIST = advanced gastrointestinal stromal tumors. NSCLC = non-small cell lung cancer. All Phase 1 clinical trials are in advanced disease.

Most importantly, we want to 
thank the patients, families 
and physicians who participate 
in our clinical trials. 
We recognize that we could not 
be successful without them.

Therapeutic areas of focus 

PROBLEM

SOLUTION

POTENTIAL OPPORTUNITY*

BLU-285 
is a potent and highly 
selective inhibitor 
that targets KIT, 
including exon 17 
mutations, and 
PDGFRα, including 
the D842V mutation

BLU-285 
is a potent and highly 
selective inhibitor 
that targets the KIT 
D816V mutation

BLU-554 
is a potent and highly 
selective inhibitor that 
targets FGFR4

Unresectable
gastrointestinal 
stromal tumors
(GIST)

Rare sarcoma of the 
digestive tract

No current therapy 
addresses KIT exon 17 
and PDGFRα mutations 

Overall survival is about 
5 years in KIT-driven 
GIST and 15 months in 
PDGFRα-driven GIST

Systemic
mastocytosis
(SM)

Severe rare disease with 
mast cell proliferation in 
bone marrow and other 
parts of the body

KIT D816V mutation is a 
key driver in about 90-95% 
of patients

Overall survival is about 3 to 
5 years for advanced forms 
of SM, and current 
treatments focus on 
symptomatic relief

Liver cancer is the second 
leading cause of cancer 
death worldwide

We estimate 30% of HCC 
patients have tumors 
with aberrantly activated 
FGFR4 signaling

Current standard of care for 
advanced HCC (sorafenib) 
has about 2% response rate

Advanced 
hepatocellular 
carcinoma 
(HCC)

4,500 
3L patients with exon 17 
mutant KIT (>90% of 3L 
GIST patients) 

500 
patients with D842V 
mutant PDGFRα 
(5-6% of GIST patients)

4,100 
patients with advanced 
forms of SM (including 
smoldering SM) who 
have the KIT D816V 
mutation 

14,900 
patients with indolent 
SM who have the KIT 
D816V mutation

18,900 
1L patients with 
aberrantly active 
FGFR4 signaling

8,000
2L patients with 
aberrantly active 
FGFR4 signaling 

*Patient numbers are approximate, and based on estimated incident (GIST, HCC) or prevalent (SM) populations in major markets 
(US, EU5 and Japan). 

UNITED STATES   
SECURITIES AND EXCHANGE COMMISSION   
Washington, DC 20549   

Form 10-K   

(Mark One) 

 

 

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

For the fiscal year ended December 31, 2016 
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: 001-37359   

BLUEPRINT MEDICINES CORPORATION   
(Exact name of registrant as specified in its charter)   

 Delaware 
(State or other jurisdiction of 
incorporation or organization) 
38 Sidney Street, Suite 200 

Cambridge, MA 

(Address of principal executive offices) 

26-3632015 
(IRS Employer 
Identification No.) 

02139 
(Zip Code) 

Registrant’s telephone number, including area code: (617) 374-7580 
Securities registered pursuant to Section 12(b) of the Act:   

Title of Class 
Common Stock, par value $0.001 per share 

Name of Exchange on Which Registered 
NASDAQ Global Select 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 and posted on its corporate Web site, if any, every Interactive Data File 

required to be submitted and posted 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 and post such files).    Yes          No         

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to 
the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment 
to this Form 10-K.     

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. 

See definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):   

Large accelerated filer     

Accelerated filer     

Non-accelerated filer   
(Do not check if a 
smaller reporting company) 

Smaller reporting company   

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).    Yes        No       
As of June 30, 2016, the aggregate market value of the voting and non-voting common equity held by non-affiliates of the registrant, based on the 

last reported sales price for the registrant’s common stock, par value $0.001 per share, on the NASDAQ Global Select Market on such date, was 
approximately $428,041,604.   

Number of shares of the registrant’s common stock, par value $0.001 per share, outstanding on February 28, 2017: 33,203,902 

DOCUMENTS INCORPORATED BY REFERENCE 
Portions of the registrant’s definitive proxy statement for its 2017 Annual Meeting of Stockholders, which the registrant intends to file with the 
Securities and Exchange Commission pursuant to Regulation 14A within 120 days after the end of the registrant’s fiscal year ended December 31, 2016, 
are incorporated by reference into Part III of this Annual Report on Form 10-K. 

 
 
 
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
TABLE OF CONTENTS 

PART I   

Business 
Risk Factors 
Unresolved Staff Comments 
Properties 
Legal Proceedings 
Mine Safety Disclosures 

PART II 

Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of 
Equity Securities 
Selected Financial Data 
Management’s Discussion and Analysis of Financial Condition and Results of Operations 
Quantitative and Qualitative Disclosures About Market Risk. 
Financial Statements and Supplementary Data 
Change in and Disagreements with Accountants on Accounting and Financial Disclosure. 
Controls and Procedures 
Other Information 

PART III 

Directors, Executive Officers and Corporate Governance 
Executive Compensation 
Security Ownership of Certain Beneficial Owners and Management and Related Stockholder 
Matters 
Certain Relationships and Related Transactions, and Director Independence 
Principal Accounting Fees and Services 

Item 1. 
Item1A. 
Item 1B. 
Item 2. 
Item 3. 
Item 4. 

Item 5. 

Item 6. 
Item 7. 
Item 7A. 
Item 8. 
Item 9. 
Item 9A. 
Item 9B. 

Item 10. 
Item 11. 
Item 12. 

Item 13. 
Item 14. 

Item 15. 
Item 16. 

Exhibits and Financial Statement Schedules 
Form 10-K Summary 

PART IV 

Page 

3
45
81
81
82
82

83

85
86
103
103
103
104
105

105
105
105

105
105

106
106

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Unless otherwise stated, all references to “us,” “our,” “Blueprint,” “Blueprint Medicines,” “we,” the 
“Company” and similar designations in this Annual Report on Form 10-K refer to Blueprint Medicines Corporation and 
its consolidated subsidiary, Blueprint Medicines Security Corporation. 

FORWARD-LOOKING STATEMENTS 

This Annual Report on Form 10-K contains forward-looking statements that involve substantial risks and 

uncertainties. All statements, other than statements of historical facts, contained in this Annual Report on Form 10-K are 
forward-looking statements. In some cases, you can identify forward-looking statements by words such as “anticipate,” 
“believe,” “contemplate,” “continue,” “could,” “estimate,” “expect,” “intend,” “may,” “plan,” “potential,” “predict,” 
“project,” “seek,” “should,” “target,” “will,” “would” or the negative of these words or other comparable terminology, 
although not all forward-looking statements contain these identifying words.   

The forward-looking statements in this Annual Report on Form 10-K include, but are not limited to, statements 

about: 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

the initiation, timing, progress and results of our pre-clinical studies and clinical trials, including our 
Phase 1 clinical trials for BLU-285, BLU-554 and BLU-667, and our research and development 
programs;   

our ability to advance drug candidates into, and successfully complete, clinical trials;   

the timing or likelihood of regulatory filings and approvals;   

the commercialization of our drug candidates, if approved;   

the pricing and reimbursement of our drug candidates, if approved;   

the implementation of our business model, strategic plans for our business, drug candidates and 
technology;   

the scope of protection we are able to establish and maintain for intellectual property rights covering 
our drug candidates and technology;   

estimates of our expenses, future revenues, capital requirements and our needs for additional 
financing;   

the potential benefits of our existing rare genetic disease collaboration with Alexion Pharma Holding 
and our existing cancer immunotherapy collaboration with F. Hoffmann-La Roche Ltd and Hoffmann-
La Roche Inc., as well as our ability to enter into other strategic arrangements; 

the development of companion diagnostic tests for our drug candidates, including our companion 
diagnostic test with Ventana Medical Systems, Inc. for BLU-554 and our companion diagnostic test 
with QIAGEN Manchester Limited for BLU-285;   

our ability to maintain and establish collaborations;   

our financial performance; and 

developments relating to our competitors and our industry. 

Any forward-looking statements in this Annual Report on Form 10-K reflect our current views with respect to 

future events or to our future financial performance and involve known and unknown risks, uncertainties and other 
important factors that may cause our actual results, performance or achievements to be materially different from any 
future results, performance or achievements expressed or implied by these forward-looking statements. We have 
included important factors in the cautionary statements included in this Annual Report on Form 10-K, particularly in the 
“Risk Factors” section, that could cause actual results or events to differ materially from the forward-looking statements 
that we make. Given these uncertainties, you should not place undue reliance on these forward-looking statements. Our 
forward-looking statements do not reflect the potential impact of any future acquisitions, mergers, dispositions, joint 
ventures or investments we may make or enter into. 

1 

You should read this Annual Report on Form 10-K and the documents that we have filed as exhibits to this 

Annual Report on Form 10-K completely and with the understanding that our actual future results, performance or 
achievements may be materially different from what we expect. Except as required by law, we assume no obligation to 
update or revise these forward-looking statements for any reason, even if new information becomes available in the 
future. 

This Annual Report on Form 10-K also contains estimates, projections and other information concerning our 

industry, our business and the markets for certain diseases, including data regarding the estimated size of those markets, 
and the incidence and prevalence of certain medical conditions. Information that is based on estimates, forecasts, 
projections, market research or similar methodologies is inherently subject to uncertainties and actual events or 
circumstances may differ materially from events and circumstances reflected in this information. Unless otherwise 
expressly stated, we obtained this industry, business, market and other data from reports, research surveys, studies and 
similar data prepared by market research firms and other third parties, industry, medical and general publications, 
government data and similar sources. 

2 

 
 
 
Item 1. Business. 

Overview   

PART I 

We are a biopharmaceutical company focused on improving the lives of patients with genomically defined 

diseases driven by abnormal kinase activation. Our approach is to systematically and reproducibly identify kinases that 
are drivers of diseases in genomically defined patient populations and to craft drug candidates that may provide 
significant and durable clinical responses for patients without adequate treatment options. This integrated biology and 
chemistry approach enables us to identify, characterize and design drug candidates to inhibit novel kinase targets that 
have been difficult to selectively inhibit. By focusing on diseases in genomically defined patient populations, we believe 
that we will have a more efficient development path with a greater likelihood of success. Leveraging our novel target 
discovery engine, we have developed a robust small molecule drug pipeline in cancer and a rare genetic disease.   

Our most advanced drug candidates are BLU-285, BLU-554 and BLU-667. BLU-285 is an orally available, 

potent and highly selective inhibitor that targets KIT, including Exon 17 mutations, and targets PDGFRα, including the 
D842V mutation. These mutations abnormally activate receptor tyrosine kinases that are drivers of cancer and 
proliferative disorders, including gastrointestinal stromal tumors, or GIST, and systemic mastocytosis, or SM. We are 
currently evaluating BLU-285 in an ongoing Phase 1 clinical trial for defined subsets of patients with GIST and an 
ongoing Phase 1 clinical trial for advanced SM. GIST is a rare disease that is a sarcoma, or tumor of bone or connective 
tissue, of the gastrointestinal tract, or GI tract, and SM is a rare disorder that causes an overproduction of mast cells and 
the accumulation of mast cells in the bone marrow and other organs, which can lead to a wide range of debilitating 
symptoms and organ dysfunction and failure. BLU-554 is an orally available, potent and highly selective inhibitor that 
targets FGFR4, a kinase that is aberrantly activated in a defined subset of patients with hepatocellular carcinoma, or 
HCC, the most common type of liver cancer. We are currently evaluating BLU-554 in an ongoing Phase 1 clinical trial 
in patients with advanced HCC. BLU-667 targets RET, a receptor tyrosine kinase that is abnormally activated by 
mutations or translocations, and RET resistant mutants that we predict will arise from treatment with first generation 
therapies. RET is a driver of disease in non-small cell lung cancer, or NSCLC, and cancers of the thyroid, including 
medullary thyroid carcinoma, or MTC, and our research suggests that RET may be a driver of disease in subsets of colon 
cancer, breast cancer and other cancers. In December 2016, the U.S. Food and Drug Administration, or FDA, approved 
our Investigational New Drug, or IND, application for BLU-667 for the treatment of NSCLC, thyroid cancer and other 
advanced solid tumors, and we expect to initiate a Phase 1 clinical trial for BLU-667 for the treatment of NSCLC, MTC 
and other advanced solid tumors in the first half of 2017. In September 2015, the FDA granted orphan drug designation 
to BLU-554 for the treatment of HCC, and in January 2016, the FDA granted orphan drug designation to BLU-285 for 
the treatment of GIST and SM. In addition, in October 2016, the FDA granted fast track designation to BLU-285 for the 
treatment of patients with unresectable or metastatic GIST that progressed following treatment with imatinib and a 
second tyrosine kinase inhibitor and for the treatment of patients with unresectable or metastatic GIST with the PDGFRα 
D842V mutation regardless of prior therapy. We have worldwide development and commercialization rights to BLU-
285, BLU-554 and BLU-667.   

We also have initiated a discovery program targeting protein kinase cAMP-activated catalytic subunit alpha, or 

PRKACA, fusions for the treatment of fibrolamellar carcinoma, or FLC, a rare and distinct subtype of liver cancer that 
typically arises in young adults. PRKACA fusions are the only known recurrent genomic events in FLC and are 
considered to be the driver gene of the disease. Currently, there are no approved therapies for FLC, and surgery is the 
only available treatment option for some patients, but most patients inevitably progress. We will continue to leverage our 
discovery platform to systematically and reproducibly identify kinases that are drivers of diseases in genomically defined 
patient populations and craft drug candidates that potently and selectively target these kinases. We anticipate nominating 
at least one additional discovery program in 2017.   

In addition to our wholly-owned clinical and pre-clinical programs, we have leveraged our discovery platform 

to enter into collaboration programs with Alexion Pharma Holding, or Alexion, and F. Hoffmann-La Roche Ltd and 
Hoffmann-La Roche Inc., which we refer to collectively as Roche. In March 2015, we entered into an agreement with 
Alexion to discover, develop and commercialize one or more drug candidates targeting an undisclosed rare genetic 
disease. In March 2016, we entered into an agreement with Roche to discover, develop and commercialize up to five 
small molecule therapeutics targeting kinases believed to be important in cancer immunotherapy, as single products or 
possibly in combination with other therapeutics. We will continue to evaluate additional collaborations that could 

3 

maximize the value for our programs and allow us to leverage the expertise of strategic collaborators. We are also 
focused on engaging in collaborations to capitalize on our discovery platform outside of our primary strategic focus area 
of cancer. 

Approved kinase drugs, such as imatinib, have demonstrated significant benefit to patients, and small molecule 

kinase drugs achieved over $22 billion in 2016 sales. Despite this success, there is room for further improvement in 
kinase drug discovery and development. Many of the approved drugs are multi-kinase inhibitors that are not selective for 
disease drivers. This results in off-target toxicities that limit dose levels and target inhibition, thereby reducing efficacy. 
Further, patients who initially respond to a targeted kinase treatment often relapse due to the development of resistance 
mutations. As of December 31, 2016, kinase drugs approved by the FDA are only directed at less than five percent of the 
518 kinases that constitute the kinome. For many of the known kinases, there is a strong link between genomic 
alterations in a kinase and disease, including specific forms of cancer and rare genetic diseases. However, the function of 
the majority of the kinome is still unknown. Taken together, this represents a substantial opportunity for developing 
novel and transformative drugs for cancer, rare genetic diseases and other disease areas, including cancer 
immunotherapy. 

To capitalize on the kinase opportunity, we built a discovery platform that integrates a novel target discovery 

engine and a proprietary compound library. Our novel target discovery engine combines our expertise in genomics, 
bioinformatics, and cell and structural biology to provide new insights into the biology of kinases as drivers of disease. 
To develop kinase drugs, we start by interrogating our proprietary compound library. Our library is a unique collection 
of novel small molecules rationally designed and developed entirely in-house by Blueprint Medicines’ scientists as 
kinase inhibitors and enriched for drug-like properties. We do not owe any royalties or other fees to any parties 
associated with our novel target discovery engine and our proprietary compound library, other than any royalties or other 
fees that may become payable to Roche under our cancer immunotherapy collaboration. Using this discovery platform, 
we have produced a drug pipeline of several promising drug candidates that target genomically defined patient subsets. 
We believe that our strategy will allow us to deliver transformative drugs to patients while building a fully-integrated 
biopharmaceutical company. 

Our lead programs targeting KIT, including Exon 17 mutations, PDGFRα, including the D842V mutation, 

FGFR4 and RET provide strong evidence of the power of our proprietary compound library. These targets have been 
well characterized in the scientific literature as disease drivers, but they have been challenging to inhibit selectively with 
small molecules. In addition, our RET program provides evidence of the strength of our novel target discovery engine 
and proprietary compound library. Leveraging our expertise in structural and cell biology, we predicted future resistance 
mutations resulting from treatment with drugs with RET inhibitory activity and have crafted drug candidates that will be 
effective against RET and predicted RET resistant mutants.   

Our Strategy 

Our goal is to become a fully-integrated biopharmaceutical company capable of delivering transformative drugs 

to patients. The key tenets of our strategy include the following: 

•  Rapidly advance our lead drug candidates, BLU-285, BLU-554 and BLU-667, through clinical 

development. We are currently enrolling patients in our ongoing Phase 1 clinical trials for BLU-285 
for the treatment of PDGFRα-driven GIST and patients with relapsed or refractory KIT-driven GIST, 
which we collectively refer to as advanced GIST, BLU-285 for the treatment of advanced SM and 
BLU-554 for the treatment of advanced HCC. In the fourth quarter of 2016, we presented preliminary 
data for each of these clinical trials showing that BLU-285 achieved proof-of-concept in advanced 
GIST and advanced SM and that BLU-554 achieved proof-of-concept in advanced HCC. We also 
expect to initiate a Phase 1 clinical trial for BLU-667 for the treatment of NSCLC, MTC and other 
advanced solid tumors in the first half of 2017. For some of our drug candidates, in order to select 
patients most likely to respond to our therapies and rapidly confirm mechanistic and clinical proof of 
concept, we may seek to develop companion diagnostic tests. We may also seek to develop assays to 
measure target engagement and pathway modulation, which are confirmation that a drug binds to its 
intended protein target in vivo, and we may develop measures of early response. We expect these 
approaches may enable earlier determination of clinical activity, allow for clear decision points for the 
clinical and regulatory development of our drug candidates and, for any of our drug candidates that 
receive marketing approval, improve patient care by identifying patients who will benefit from the 

4 

therapy. In addition, we plan to evaluate opportunities for accelerated clinical development and 
expedited regulatory review and approval for each of our drug candidates, including fast track 
designation, accelerated approval, priority review and breakthrough therapy designation. The FDA has 
granted fast track designation to BLU-285 for the treatment of patients with unresectable or metastatic 
GIST that progressed following treatment with imatinib and a second tyrosine kinase inhibitor and for 
the treatment of patients with unresectable or metastatic GIST with the PDGFRα D842V mutation 
regardless of prior therapy. In addition, the FDA has granted orphan drug designation to BLU-285 for 
the treatment of GIST and SM and BLU-554 for the treatment of HCC. 

•  Build a pipeline of kinase drugs for patients with genomically defined drivers of disease. We will 
continue to leverage our discovery platform to systematically and reproducibly identify kinases that 
are drivers of diseases in genomically defined patient populations and craft drug candidates that 
potently and selectively target these kinases. We anticipate nominating at least one additional 
discovery program in 2017. 

•  Continuously invest in our proprietary discovery platform to ensure future growth. We plan to 

enhance our target discovery engine to enable new insights into known kinase biology and to identify 
new kinase drug targets. We are focused on uncovering the potential role of the “kinases of unknown 
biology,” or KUBs, which constitute the majority of the kinome. We have continued to expand our 
proprietary compound library to cover a significant portion of the kinome and anticipate that as part of 
our discovery efforts we will continue to increase the number of compound families that inhibit each 
kinase target. 

•  Evaluate strategic collaborations to maximize the value of our programs and platform. In addition to 
our wholly-owned clinical and pre-clinical programs, we have leveraged our discovery platform to 
enter into collaboration programs with Alexion for an undisclosed rare genetic disease and with Roche 
for up to five small molecule therapeutics targeting kinases believed to be important in cancer 
immunotherapy, as single products or possibly in combination with other therapeutics. We will 
continue to evaluate additional collaborations that could maximize the value for our programs and 
allow us to leverage the expertise of strategic collaborators, including regional or global research, 
development, marketing or commercialization collaborations. We are also focused on engaging in 
collaborations to capitalize on our discovery platform outside of our primary strategic focus area of 
cancer. 

•  Maintain Blueprint Medicines’ patient-focused and science-driven culture as we grow our business. 
We are focused on building an entrepreneurial organization that is patient-focused and science-driven 
and fosters a culture of creativity, innovation, hard work and an urgency for efficiently developing 
treatments to improve the lives of patients who have few, if any, treatment options. We plan to 
continue working closely with physicians and patient advocacy groups to better understand the impact 
that the diseases we are targeting have on patients and their families, as well as to rapidly identify and 
enroll patients most likely to respond to our drug candidates. As we grow, we intend to continue hiring 
the most qualified individuals in biology, chemistry, clinical development and business, who fit within 
our culture and incorporate our entrepreneurial spirit and passion for developing transformative drugs 
that have the potential to improve patients’ lives. We also intend to continue fostering an environment 
that encourages tight integration across disciplines to ensure a seamless flow of ideas and information 
exchange.     

Our Focus — Highly Selective Kinase Drugs for Genomically Defined Diseases 

Kinases are enzymes that function in many signaling pathways to regulate critical cellular functions. Kinase-

dependent signaling networks are present in multiple different cell types, including muscle cells and cells of the immune 
system, and deregulation of these networks can lead to disease pathology. Abnormal activation of kinases has been 
shown to drive several key activities of cancer cells, including growth, survival, metabolism, cell motility and 
angiogenesis. Kinases may become abnormally activated through a number of mechanisms, including when: (1) a gene 
mutates creating a change in the resulting protein sequence; (2) chromosomes become rearranged creating a 
translocation or a fusion gene; or (3) excessive amounts of protein are created due to gene duplication or dysregulation 
leading to overexpression. There is a strong link between genomic alterations in kinases and disease, including specific 

5 

forms of cancer and rare genetic diseases. Several kinases have been validated as oncogenes, which are genes that when 
altered can initiate and maintain cancer growth. Examples of oncogenes are ABL, EGFR, B-RAF, ALK, BTK and JAK, 
among many others. Ongoing genomic analyses of tumor data sets continue to identify new roles for kinases as drivers 
of disease. 

As of December 31, 2016, there were 34 FDA-approved small molecule drugs that target less than five percent 
of the 518 kinases, of which all but two are indicated for cancer. Kinase inhibition continues to be a fruitful approach for 
cancer drug development. From 2012 to 2016, 16 of 48 FDA-approved cancer drugs were kinase inhibitors. 

Despite these successes, many opportunities remain in kinase drug discovery and development. 

• 

Identifying novel kinase drivers of disease. Very few kinases are the focus of approved drugs. Further, 
the function of the majority of the kinome still remains unexplored. Thus, there is substantial 
opportunity for developing novel and transformative therapies that target well-characterized but 
currently difficult-to-drug kinases as well as KUBs. 

•  Crafting very selective kinase drugs. Due to the high degree of homology between kinases, specific 
targeting of a given kinase can be challenging. Many of the approved kinase drugs inhibit multiple 
kinases and are referred to as multi-kinase inhibitors. Due to inhibition of off-target kinases, these 
multi-kinase inhibitors often give rise to severe unwanted effects, which can negatively impact the 
ability to dose patients at sufficient levels to achieve optimal efficacy. We believe increasing 
selectivity will minimize off-target toxicities and will improve efficacy by enabling higher dose levels 
and greater target inhibition. Further, combination therapies require that the drugs have 
non-overlapping toxicities, which could be minimized with more selective agents. 

•  Generating novel chemical matter required to target difficult-to-drug kinases. Novel chemical matter 

is needed to address targets that are known but have proven difficult-to-drug. Pharmaceutical 
companies generally rely on known chemical families as the basis of drug discovery programs. 
Consequently, the vast majority of pharmaceutical companies have similar compound libraries. New 
approaches are needed to develop novel chemistry and differentiated libraries that can inhibit 
difficult-to-drug kinases in alternate ways. 

•  Overcoming resistance mediated by the alteration of kinase targets. Most approved kinase inhibitors 
provide only temporary disease control. Patients may relapse due to the emergence of on-target 
resistance mutations. Novel approaches are needed to predict and inhibit resistant mutants thus 
providing more durable clinical responses. 

Our Approach and Platform 

Our approach is to systematically and reproducibly identify kinases that are drivers of diseases in genomically 

defined patient populations and to craft drug candidates that provide significant and durable clinical responses to 
patients. This approach enables us to drug known kinase targets that have been difficult to inhibit selectively and also 
identify, characterize and design drug candidates to inhibit novel kinase targets. By focusing on diseases in genomically 
defined patient populations, we believe that we can quickly identify the patients most likely to respond, resulting in a 
more efficient development path with a greater likelihood of success. 

Our approach is enabled by our drug discovery platform consisting of two pillars: 

• 

• 

a proprietary, highly-annotated library of novel compounds; and 

a novel target discovery engine, which is a comprehensive process that interrogates kinase biology 
from many angles using genomics, structural biology and cell biology. 

Our proprietary compound library is a unique collection of small molecules designed and developed entirely 
in-house by Blueprint Medicines’ scientists as kinase inhibitors and enriched for drug-like properties. We do not owe 
royalties or other fees to any parties associated with our novel target discovery engine and our proprietary compound 

6 

library. This provides high-quality compounds to start kinase drug discovery programs and to use in identifying new 
kinase targets. The compounds were designed as kinase inhibitors without specific targets in mind, a design strategy that 
yielded a diversity of novel chemical structures that provide access to unique chemical matter. Each compound has been 
extensively characterized for binding to over 450 kinases and disease-relevant kinase mutants, and the majority of 
known kinases are targeted by at least one compound family. Thus, this “annotated” compound library provides 
high-quality medicinal chemistry starting points that enable quick-starts to drug discovery programs, avoiding the 
expense and time spent running high throughput screens. Notably, our proprietary compound library has yielded high 
quality chemical starting points for previously difficult-to-drug kinases. We have continued to expand our proprietary 
compound library to cover a significant portion of the kinome and anticipate that as part of our discovery efforts we will 
continue to increase the number of compound families that inhibit each kinase target. 

We have established a novel target discovery engine, which was developed entirely in-house, to provide new 

insights into the biology of kinases as drivers of disease and to identify new kinase drug targets. There are two aspects to 
the novel target discovery engine: 

•  Genomics Approach to Identify Novel Kinase Targets. Our high-capacity computing infrastructure 
allows not only storage of very large genomic databases but also rapid analyses of these data using 
proprietary algorithms developed by our bioinformaticians. For example, using our proprietary kinase 
fusion detection algorithm to analyze human tumor sequences, we have identified both novel kinase 
fusions and new disease indications for several known kinase fusions. These results were published in 
Nature Communications in 2014. 

•  Cell-based Screens to Identify Novel Kinase Targets. In this approach, a subset of the compounds in 
our proprietary compound library that exhibit remarkable potency and/or selectivity for one or a few 
kinases — our “tool compounds” — are used as probes in disease-relevant cell-based screens. Many of 
these tool compounds inhibit KUBs and thus allow us to evaluate potential roles for these relatively 
unexplored kinases in human disease. 

Another aspect of our novel discovery engine is predicting resistance mutations. Through our structural and cell 

biology expertise, we predict mutations in kinases that render the enzyme insensitive to inhibition by an approved drug 
or compound in development. While treatment of patients with genomically defined cancers with a targeted therapy 
typically results in a significant anti-tumor response, frequently the response is not durable. In tumors driven by an 
activated kinase, kinase reactivation via mutation is a common mechanism of resistance. Using our structural biology 
and computational chemistry expertise, we predict what changes in the kinase might result in a resistant enzyme and then 
confirm this prediction in a relevant cell culture model. We have and may continue to form collaborations to track 
emerging patterns of resistance in the clinic to confirm our predictions. We have used this process of predicting 
resistance to inform the design of several of our next generation drugs, including BLU-667 for RET fusions and 
predicted RET resistant mutants.   

Our discovery platform has already yielded a robust pipeline. KIT mutations, including Exon 17 mutants, while 
known drivers of disease, historically, were not selectively drugged successfully. We developed BLU-285 as a selective 
inhibitor of KIT, including Exon 17 mutations, an effort that our proprietary compound library facilitated. Aberrant 
signaling through FGFR4 is a known genomic driver in a subset of HCC patients. This kinase has been difficult to drug 
selectively due to the close homology of the FGFR family members. We developed BLU-554 as a selective inhibitor of 
FGFR4 to address the unmet medical need in this genomically defined HCC patient population. In addition, for our RET 
program, we applied our resistance mutation prediction algorithm to identify mutant forms of RET that are resistant to 
multi-kinase inhibitors with RET activity and utilized our proprietary compound library to develop BLU-667, a potent 
and selective inhibitor of RET and predicted RET resistant mutants with activity against both the wild-type and mutant 
enzymes. Finally, we are currently using and will continue to use our tool compounds to explore the role of KUBs in 
human disease with the goal of identifying novel kinase targets. 

7 

Our Development Programs 

We have leveraged our discovery platform to develop a robust drug pipeline of orally available, potent and 

selective small molecule kinase inhibitors that target genomic drivers in several cancers and a rare genetic disease. We 
currently own worldwide development and commercial rights to all of our pre-clinical and clinical programs other than 
any drug candidates being developed in our rare genetic disease program with Alexion and our cancer immunotherapy 
program with Roche. The following table summarizes our most advanced drug candidates as of February 28, 2017, each 
of which is described in further detail below. 

Drug Candidate 

Initial Diseases 

Genomic Drivers 

  Stage of Development (1)    Commercial Rights 

BLU-285   

(KIT inhibitor) 

  SM 

  GIST 

  GIST 

  KIT D816V mutation 

  Phase 1 enrolling 

  Blueprint Medicines 

  D842V mutant PDGFRα 

  Phase 1 enrolling 

  KIT mutations, including 

  Phase 1 enrolling 

Exon 17 mutants 

BLU-554   

  HCC 

  Aberrant FGFR4 signaling    Phase 1 enrolling 

  Blueprint Medicines 

(FGFR4 inhibitor) 

BLU-667   

(RET inhibitor) 

  NSCLC, MTC and other 
advanced solid tumors 

  RET activating mutations, 

  IND accepted 

  Blueprint Medicines 

fusions and predicted 
resistant mutants 

PRKACA   

  FLC 

  PRKACA fusions 

  Lead optimization 

  Blueprint Medicines 

(discovery program) 

Rare genetic disease target    Rare genetic disease 

  Undisclosed 

  Undisclosed 

  Alexion 

Cancer immunotherapy   

  Oncology 

  Immunokinases 

  Undisclosed 

  Blueprint Medicines (2) 

(up to five programs) 

Roche (3) 

(1)  All Phase 1 clinical trials are being conducted in advanced disease. 
(2)  Blueprint Medicines has U.S. commercialization rights for up to two programs. 
(3)  Roche has worldwide commercialization rights for up to three programs and ex-U.S. commercialization rights for up to two programs. 

All of our current clinical programs target patient populations with genomically defined diseases. As we 
advance our drug candidates through clinical development, we will enrich our Phase 1 clinical trials by selecting patients 
most likely to respond to our drug candidates to confirm mechanistic and clinical proof of concept. We are working with 
a number of clinical advisors, with significant medical experience as oncologists and extensive drug development 
backgrounds. We have also entered into agreements with Ventana Medical Systems, Inc., or Ventana, to develop and 
commercialize a companion diagnostic test for BLU-554 that we expect to use to identify HCC patients with abberantly 
active FGFR4 signaling as indicated by FGF19 overexpression and QIAGEN Manchester Limited, or Qiagen, to develop 
and commercialize a companion diagnostic test for BLU-285 that we expect to use to identify GIST patients with the 
PDGFRα D842V mutation. We may collaborate with these or other third parties in the future to develop and 
commercialize additional companion diagnostic tests or to develop assays to measure target engagement, pathway 
modulation and early response. 

8 

 
 
   
 
 
 
 
 
The table below lists the initial diseases and genomic drivers targeted by BLU-285, BLU-554 and BLU-667, 
and for each of these diseases, the corresponding estimated number of patients in the United States, France, Germany, 
Italy, Spain, the United Kingdom and Japan, or the Major Markets, the estimated frequency of the targeted genomic 
alteration and the estimated number of patients in the Major Markets with that genomic alteration.   

Drug 
Candidate 

Initial 
Diseases 

United States 

Total Major Markets 

Genomic Drivers 

Estimated 
Frequency of Alteration 
(% of Patients) 

Estimated Number of Patients (1) 

SM 

  1,700 advanced SM (2) 
6,500 indolent SM 

 4,400 advanced SM (2) 
16,100 indolent SM 

KIT D816V mutation 

90-95% 

  Estimated Number of 
Patients with 
Alteration in Major 
Markets (1) 

  4,100 advanced SM (2) 
14,900 indolent SM 

BLU-285 

3,300 first line 

8,700 first line 

GIST (3) 

3,000 second line 

7,700 second line 

2,400 third line 

5,000 third line 

  D842V mutant PDGFRα   5-6% of primary GIST 

  500 total 

Exon 17 mutant KIT 

23% second line 

1,800 second line   

  <1% first line 

  100 first line 

>90% third line 

4,500 third line 

BLU-554 

HCC (3)(4) 

  18,000 first line 

 63,100 first line 

7,300 second line 

26,500 second line 

  Aberrant FGFR4 

signaling 

Approximately 30% 

  153,900 first line 

 367,500 first line 

NSCLC (3) 

91,600 second line 

214,200 second line 

RET fusions 

1-2% 

37,400 third line 

83,500 third line 

BLU-667 

  18,900 first line 

8,000 second line 

  5,500 first line 

3,200 second line 

1,300 third line 

  MTC (3) 

  480 total 

 990 total 

  RET mutations 

  60% 

  600 total 

(1)  Based on estimated prevalence for SM patients and MTC patients and estimated incidence for GIST, HCC and NSCLC patients.   
(2)  Estimate includes smoldering SM. 
(3)  Estimate includes metastatic and unresectable patient populations. 
(4)  The incidence of HCC outside of the Major Markets, including in China, South Korea, Taiwan and Singapore, represents an additional 

opportunity for BLU-554.   

KIT Inhibitor Program 

Overview 

BLU-285 is an orally available, potent and highly selective inhibitor that targets KIT, including Exon 17 

mutations, and targets PDGFRα, including the D842V mutation, abnormally active receptor tyrosine kinases that are 
drivers of cancer and proliferative disorders. BLU-285 is able to potently and selectively inhibit both KIT and PDGFRα 
with minimal inhibition of other kinases due to the high degree of structural similarity of the kinase domains of KIT and 
PDGFRα. 

Kinome tree locations of KIT and PDGFRα illustrating close structural similarity between these kinases. Each branch of the dendogram 
represents an individual human kinase. Kinome illustration reproduced courtesy of CSTI (www.cellsignal.com). The foregoing website is 
maintained by CSTI, and Blueprint Medicines is not responsible for its content. 

9 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
We are initially developing BLU-285 for PDGFRα-driven GIST and patients with relapsed or refractory KIT-

driven GIST, which we collectively refer to as advanced GIST, and for advanced SM. In July 2015 and September 2015, 
respectively, the FDA accepted our IND applications for BLU-285 for the treatment of advanced GIST and BLU-285 for 
the treatment of advanced SM. We are currently enrolling patients in ongoing Phase 1 clinical trials for each of these 
indications. Based on the preliminary safety and clinical activity data from our Phase 1 clinical trial for BLU-285 for 
advanced SM, we plan to evaluate options to expand the clinical development of BLU-285 in other KIT-driven diseases, 
including possible opportunities for the treatment of indolent SM, or ISM, and KIT-mutant acute myeloid leukemia, 
groups of patients in need of more effective treatments. 

Systemic Mastocytosis (SM) 

SM Disease Background 

SM is a disorder of the mast cells, the key effector cells of allergic inflammation, which have several 
physiologic roles including wound healing, regulation of vascular and epithelial permeability and immune cell 
recruitment. The signature of SM is the overproduction of mast cells and the accumulation of mast cells in the bone 
marrow and other organs. In advanced forms of SM, abnormal mast cells may also accumulate in the liver, spleen, 
gastrointestinal tract and bones. Mast cell activation and histamine release can lead to severe allergic symptoms ranging 
from a skin rash to hives, fever and anaphylaxis, while mast cell accumulation in advanced cases of SM can eventually 
lead to organ dysfunction and failure. 

Patients with SM are usually diagnosed in adulthood. The diagnosis involves a complex diagnostic algorithm 

that begins with confirmation of SM and subsequently categorizes patients into indolent or advanced subtypes of disease, 
a classification that has prognostic significance as shown below. Patients with ISM have a normal life expectancy. The 
primary burden of disease for ISM patients is the range of often unpredictable and debilitating allergic symptoms due to 
mast cell activation. Advanced SM includes three subsets with increasingly severe impact on life expectancy: aggressive 
SM, or ASM, advanced SM with an associated hematologic neoplasm, SM-AHN, and mast cell leukemia, or MCL. 
These advanced forms of SM have a median overall survival of three to five years and are characterized by prominent 
organopathy and dysfunction, as well as symptoms of mast cell activation. Smoldering SM, or SSM, is increasingly 
considered as a variant of advanced SM. While SSM is not known to affect life expectancy, it has a greater degree of 
bone marrow infiltration, myeloproliferation and/or presents with an enlarged liver and bears a greater risk of 
progression to ASM, SM-AHN or MCL.   

Overall survival of SM patients. Republished with permission of the American Society of Hematology, from “How I treat patients with 
indolent and smoldering mastocytosis,” A. Pardanani, Blood, 121(16):3085 - 3094 (2013); permission conveyed through Copyright 
Clearance Center, Inc. In the figure above, AHD refers to SM-AHN. 

Population studies, including a population-based epidemiology study that we sponsored, based on the Danish 

National Health Registry, estimate the incidence of all subtypes of SM from 0.5 to 1/100,000 new patients per year. This 
represents approximately 3,200 new patients diagnosed per year in the United States. Of all SM patients, ISM accounts 
for 50-80% of patients, and advanced SM accounts for the remaining 20-50% of patients. 

10 

 
The current treatment paradigm for SM varies by disease subtype. With the exception of imatinib, which does 
not address patients with the KIT D816V mutation, there are no approved therapies for SM, leaving approximately 90-
95% of SM patients with limited or no treatment options. For patients with advanced forms of SM, treatments include 
interferon-alpha or cytoreductive agents to reduce mast cell burden or treatments aimed at addressing the associated 
blood disorder. However, there are no disease-modifying agents, and patients with advanced SM inevitably progress, 
with a three to five-year overall survival prognosis. In the Major Markets, we estimate there are approximately 4,100 
patients with advanced forms of SM, including SSM, who have the KIT D816V mutation.   

For ISM, management is symptom-directed and includes avoidance of triggers of mast cell activation (such as 

insect stings). Treatments for ISM include histamine blockers, cromolyn, epinephrine, and, in cases of refractory 
patients, cytoreductive agents. Within ISM, key opinion leaders see the greatest degree of unmet need for the fraction of 
patients who have a heavy symptom burden that current therapies fail to address. We plan to evaluate options to expand 
the clinical development of BLU-285 for the treatment of ISM. We estimate that there are approximately 16,100 ISM 
patients in the Major Markets.   

KIT Driver Mutations in SM 

In all subtypes of SM, the mast cells of approximately 90-95% of patients display a mutation at the D816V 

position in KIT that activates the kinase. KIT D816V status is routinely assessed as part of the workup in SM diagnosis. 

KIT signaling is needed for normal blood cell production, including the differentiation and survival of mast 

cells. In patients with SM, abnormal mast cells bearing the KIT D816V mutation undergo constitutive kinase activation, 
leading to continuous survival and proliferative signals. Rare cases of SM have been found where alternative mutations 
in KIT occur that are responsive to imatinib. In these cases, treatment with imatinib can reduce mast cell burden in the 
bone marrow and other organs and improve symptoms, thereby clinically validating KIT as a therapeutic target for SM. 

BLU-285 Pre-clinical Development in SM 

We conducted comprehensive biochemical and cellular experiments to characterize the potency and selectivity 
of BLU-285. BLU-285 potently inhibits KIT D816V in vitro (IC50, or the compound concentration at which 50% of the 
activity is inhibited relative to control lacking compound, = 0.27 nM). In contrast, imatinib inhibits KIT D816V at least 
10,000-fold less potently (IC50 > 8,000 nM). In several cellular models driven by activated KIT mutant proteins, 
BLU-285 potently inhibits signaling of the oncogenic KIT mutant protein, as measured by inhibition of KIT 
autophosphorylation and inhibition of cellular proliferation. In HMC 1.2 cells, a human mast cell leukemia model driven 
by the KIT D816V mutation, BLU-285 potently inhibits signaling of the mutant KIT protein as measured by inhibition 
of KIT autophosphorylation (IC50 = 4 nM). In contrast, imatinib inhibits KIT autophosphorylation at least 2,000-fold less 
potently. In P815 cells, a mouse mastocytoma model driven by an Exon 17 mutation, BLU-285 potently inhibits 
signaling of the mutant KIT protein as measured by inhibition of KIT autophosphorylation (IC50 = 22 nM) as well as 
cellular proliferation (IC50 = 202 nM). By comparison, imatinib shows considerably lower cellular potency in the P815 
model. 

KIT D816V Inhibition 

Potency of BLU-285 against KIT D816 and other Exon 17 mutations compared to imatinib. The inhibitory potencies of BLU-285 and 
imatinib against the KIT D816V mutant protein were evaluated in an in vitro enzyme activity assay. The inhibitory potencies of BLU-285 
and imatinib were also evaluated in two cell lines harboring KIT Exon 17 mutations, HMC 1.2 cells and P815 cells. Inhibition of KIT 
cellular signaling was measured by inhibition of KIT autophosphorylation (P-KIT). Inhibition of cellular proliferation was also measured in 
P815 cells. 

11 

 
The selectivity of BLU-285 was further evaluated by profiling BLU-285 at a concentration of 3 µM across a 

panel of over 450 kinases and disease-relevant kinase mutants using KINOMEscan methodology. BLU-285 
demonstrated exquisite selectivity for KIT Exon 17 mutant proteins and PDGFRα D842V in this assay, binding 
significantly (greater than 90% inhibition relative to control) to only 12 other kinases. We also profiled midostaurin, a 
multi-kinase inhibitor with KIT D816V inhibitory activity (an inhibitory activity not present in imatinib), that is being 
studied in clinical trials of SM patients. Midostaurin demonstrated significant binding (greater than 90% inhibition 
relative to control at 3 µ M) to 118 kinases, as indicated by the number of dots on the kinome tree shown below. We 
believe multi-kinase inhibitors that demonstrate in vitro activity against KIT D816V may not achieve full inhibition of 
KIT D816V in the clinic due to poor selectivity and the resulting dose limitations imposed by off-target toxicities. 

Kinome selectivity of BLU-285 and a reference compound that has been studied in clinical trials of SM. Compounds were screened at 3 µM 
against a panel of over 450 kinases and disease-relevant mutants. Each branch of the dendogram represents an individual human kinase. 
Kinases bound by the compound are indicated by red circles on the kinome tree. The degree of binding corresponds to the size of the circle. 
Kinome illustration reproduced courtesy of CSTI (www.cellsignal.com). The foregoing website is maintained by CSTI, and Blueprint 
Medicines is not responsible for its content. 

We demonstrated significant anti-tumor efficacy with BLU-285 in a P815 mouse mastocytoma allograft model 
where tumor growth is driven by a KIT Exon 17 mutation. BLU-285 administered orally for nine days resulted in robust 
and dose-dependent growth inhibition of P815 tumors. At a dose of 30 mg/kg once daily, a well-tolerated dose, 
BLU-285 caused tumor regression. We observed a correlation between the concentration of BLU-285 in mouse plasma 
and the level of phosphorylated KIT in the tumor, which is a measure of KIT signaling activity. At a dose of 30 mg/kg, 
the level of phosphorylated KIT was inhibited by greater than or equal to 90% over the 24 hour dosing period. This is an 
expected consequence of inhibiting KIT signaling. This correlation between BLU-285 plasma concentration, the level of 
phosphorylated KIT protein and anti-tumor efficacy supports the observation that the anti-tumor response is due to 
inhibition of KIT signaling. The anti-tumor efficacy of dasatinib, a multi-kinase inhibitor with KIT D816V activity, 
which has been studied in clinical trials of SM patients, was also evaluated in this study. Dasatinib dosed twice daily, or 
BID, at 25 mg/kg, a dose that resulted in significant body weight loss in mice, had only a modest effect on tumor growth. 

BLU-285 elicits dose-dependent tumor regression in a mouse mastocytoma allograft model of SM. In the figure above, QD means once a 
day, BID means twice a day and PO means orally. 

12 

 
 
To emulate the systemic nature of the disease, we developed an aggressive systemic mouse model of SM. In 
this model, whereas vehicle-treated animals were terminated on day seven due to high disease burden, treatment with 
BLU-285 enabled significant disease control such that animals treated with BLU-285 at 30 mg/kg were terminated on 
day 22. 

Phase 1 Clinical Trial for BLU-285 for the Treatment of Advanced SM 

BLU-285 is currently being evaluated in the dose escalation stage of a Phase 1 clinical trial in patients with 

advanced SM, and enrollment is ongoing. In January 2016, the FDA granted orphan drug designation to BLU-285 for 
the treatment of SM. 

In December 2016, we presented preliminary data from our ongoing Phase 1 clinical trial at the 2016 American 
Society of Hematology Annual Meeting. The data showed that BLU-285 was observed to be well-tolerated and achieved 
proof-of-concept in advanced SM. As of the data cutoff date of November 11, 2016, BLU-285 had been administered to 
12 patients at three dose levels (30 mg, 60 mg and 100 mg once daily, or QD). The median age was 61.5 (ranging from 
39 to 82), and the KIT D816V mutation has been confirmed in bone marrow or blood from 11 of the 12 patients. Ten of 
the 12 patients remained on the clinical trial as of the data cutoff date. Preliminary pharmacokinetic, or PK, analysis at 
all dose levels demonstrated relatively rapid absorption of BLU-285 and a mean half-life of over 19 hours, which 
supports QD dosing and is consistent with the initial data reported by us from the dose escalation stage of our Phase 1 
clinical trial for BLU-285 in patients with advanced GIST.   

Preliminary Safety Data. As of the data cutoff date of November 11, 2016, BLU-285 was observed to be well-

tolerated at all doses. No patients discontinued treatment due to an adverse event, and no Grade 4 or worse treatment-
related adverse events were reported. The majority of adverse events reported by investigators were Grade 1 or Grade 2, 
and adverse events that occurred in two or more patients included fatigue (four patients), anemia (three patients) and 
alkaline phosphatase elevation (three patients). All three cases of alkaline phosphatase elevation were Grade 3 but were 
asymptomatic and transient and occurred in the absence of transaminase or bilirubin elevations. In addition, the Grade 3 
alkaline phosphatase elevations occurred in the three patients with the highest bone marrow mast cell burden at baseline, 
suggesting the transient alkaline phosphatase elevations may be consistent with a pharmacodynamic, or PD, effect of 
BLU-285 on mast cells in the bone. One of the three cases of alkaline phosphatase elevation was considered possibly 
treatment-related and defined as a dose-limiting toxicity at the 60 mg dose level. All three patients continued treatment 
with BLU-285 without a dose reduction.   

Preliminary Clinical Activity Data. As of the data cutoff date of November 11, 2016, all 12 patients in the first 

three cohorts of the dose escalation stage of the clinical trial at doses ranging from 30 mg QD to 100 mg QD had 
completed at least two 28-day dosing cycles and were evaluated for signs of clinical activity.   

• 

Investigators observed decreases in bone marrow mast cell infiltrate, measured by bone marrow 
biopsy, in six of the eight patients who had a bone marrow biopsy after starting treatment with BLU-
285.   

•  Three of the six patients had a decrease of bone marrow mast infiltrate of more than 50% from 

baseline, including one patient with no residual mast cells in the bone marrow.   

•  Based on measurements at a central laboratory, serum tryptase decreased in 10 of 12 patients. The 

serum tryptase decrease was greater than 50% in eight patients.   

•  The allele burden of D816V mutant KIT decreased within the first two treatment cycles in five of six 

evaluable patients in circulating tumor DNA and bone marrow.   

•  Rash improved in five patients with urticaria pigmentosa from baseline based on investigator 
assessments. Urticaria pigmentosa is an allergy-mediated rash common in SM patients.   

•  Weight increased in 10 patients, and albumin increased in 11 patients, suggesting improvements in 

malabsorption.   

13 

•  Ten of 12 patients remained on treatment with BLU-285, and the duration of treatment ranged from 

one month to 8.1 months.   

Clinical Development Plans. Our Phase 1 clinical trial for BLU-285 for the treatment of advanced SM is 

designed to evaluate the safety and tolerability of BLU-285 in multiple ascending doses in patients with advanced SM, 
including ASM, SM-AHN and MCL with the goal of establishing a maximum tolerated dose, or MTD, or a 
recommended dose if the MTD is not achieved. The MTD for BLU-285 has not yet been established in this clinical trial, 
and enrollment in the dose escalation stage is ongoing. All patients will be tested retrospectively for KIT D816V 
mutational status. Once the MTD is reached, or a recommended dose is established, we will evaluate whether to open 
expansion cohorts for specific subtypes of SM. Secondary objectives for this clinical trial include assessment of the PK 
profile of BLU-285, assessment of response rate by the International Working Group Myeloproliferative Neoplasms 
Research and Treatment criteria, or IWG-MRT criteria, changes in KIT D816V mutant allele fractions in bone marrow 
and circulating tumor DNA, and changes in patient reported outcomes. The Phase 1 clinical trial is designed to enroll 
approximately 60 patients, including approximately 25 patients during dose escalation and approximately 35 additional 
patients in expansion cohorts, at multiple sites in the United States and the European Union. 

Based on the preliminary safety profile and clinical activity observed in this clinical trial, we plan to continue to 

enroll patients in the dose escalation stage of this Phase 1 clinical trial until an MTD is reached or a recommended dose 
is established. We plan to open enrollment in expansion cohorts to evaluate BLU-285 as a single agent in advanced SM 
once a recommended dose for further clinical evaluation has been determined or an MTD has been reached. We expect 
to initiate the expansion stage of this clinical trial in 2017 and plan to enroll approximately 35 patients with advanced 
SM in the expansion stage. In addition, based on the preliminary safety and clinical activity data, we plan to evaluate 
options to expand the clinical development of BLU-285 in other KIT-driven diseases, including possible opportunities 
for the treatment of indolent SM and KIT-mutant acute myeloid leukemia, groups of patients in need of more effective 
treatments.   

As there is currently no validated patient reported outcomes tool for SM, we are collaborating with a health 

research outcomes group to develop a disease-specific patient reported outcome tool to measure changes in total 
symptom burden in patients with advanced SM. In addition, we are working with patient advocacy groups relevant to 
SM in order to: 

• 

• 

• 

raise awareness of our Phase 1 clinical trial for BLU-285 for the treatment of advanced SM; 

recruit patients to join a patient registry that we launched in December 2015 to help improve the 
understanding of mastocytosis from the perspective of patients and to increase participation and 
enrollment in clinical trials for mastocytosis that we or others may conduct in the future; and 

incorporate the SM patient perspective into our ongoing activities. 

Gastrointestinal Stromal Tumors (GIST) 

GIST Disease Background 

GIST is a rare disease that is a sarcoma of the GI tract. Tumors arise within cells in the wall of the GI tract and 

occur most often in the stomach or small intestine. Most patients are diagnosed between the ages of 50-80 with diagnosis 
triggered by GI bleeding, incidental findings during surgery or imaging, or in rare cases acute presentation due to tumor 
rupture or GI obstruction. The standard workup at primary presentation includes pathologic confirmation and imaging to 
assess extent of disease. 

The GIST treatment paradigm has advanced dramatically over the past 15 years. Patients diagnosed with 

localized disease undergo potentially curative tumor resection, while imatinib is given to high risk resected patients to 
prolong the time to recurrence. The advent of imatinib has improved the prognosis of patients with unresectable or 
metastatic disease to a 5-year median overall survival. Unresectable or metastatic patients typically receive imatinib, 
followed by sunitinib and regorafenib as the disease progresses. 

Patients with PDGFRα D842V-driven GIST have great unmet medical need, as no approved medical therapies 

are effective. Progression can occur within as little as three months, and the median overall survival is 15 months for 

14 

patients with advanced disease. The PDGFRα D842V mutation is found in 5-6% of frontline unresectable or metastatic 
GIST patients. In the Major Markets, we estimate there are approximately 500 patients with PDGFRα D842V-driven 
GIST.   

For patients with KIT-driven GIST, current medical therapies slow the course of disease but progression is 

inevitable in most cases. Up to 50% of patients treated with frontline imatinib relapse within approximately 18 months. 
Of the secondary resistance mutations that lead to relapse, mutations in KIT Exon 17 are not addressed by current 
therapies. KIT Exon 17 mutations are rare in treatment-naïve patients (<1%); however selective pressure due to 
treatment with imatinib and sunitinib causes KIT Exon 17 mutations to emerge with increasing frequency 
(approximately 23% of second line imatinib-resistant patients and more than 90% of third line imatinib/sunitinib 
resistant patients). These mutations confer resistance to current treatments. A therapy that effectively suppresses these 
mutants and that is potentially amenable to combinations with existing agents is needed. In the Major Markets, we 
estimate there are approximately 6,300 second line and third line patients with KIT-driven GIST. Finally, we believe 
frontline combinations with imatinib will have the potential to dramatically increase the duration of response. In the 
Major Markets, we estimate there are approximately 21,400 total patients with unresectable or metastatic GIST, 
including approximately 8,700 patients with unresectable or metastatic frontline GIST.   

KIT and PDGFRα Driver Mutations in GIST 

GIST is a tumor type that depends on continued signaling of a single, aberrantly active kinase. Most GISTs 

result from primary mutations in KIT or PDGFRα. Up to 80% of patients have KIT-driven GIST. Imatinib effectively 
inhibits most of KIT primary mutations; however over time, secondary mutations occur elsewhere in the KIT gene that 
lead to kinase activation despite the presence of imatinib, thereby leading to disease progression. The most common 
mutation in the PDGFRα gene is D842V, found in approximately 5-6% of frontline unresectable or metastatic GIST 
patients. There is currently no therapeutic option for patients with D842V mutant PDGFRα-driven GIST. PDGFRα has a 
very similar active site structure to KIT, and the PDGFRα D842V mutation is homologous to KIT D816V. As in the case 
of KIT Exon 17 mutant receptors, PDGFRα D842V mutations confer ligand-independent constitutive signaling of the 
mutant PDGFRα kinase. 

BLU-285 Pre-clinical Development in GIST 

We have conducted comprehensive pre-clinical experiments to characterize the potency and selectivity of 

BLU-285. BLU-285 potently inhibits PDGFRα D842V in vitro (IC50 = 0.24 nM). In contrast, imatinib inhibits PDGFRα 
D842V at least 3,000-fold less potently (IC50 = 759 nM). In a cellular model driven by an activated PDGFRα D842V 
mutant protein, BLU-285 potently inhibits signaling of the oncogenic PDGFRα mutant protein as measured by inhibition 
of PDGFRα autophosphorylation (IC50 = 30 nM). By comparison, imatinib shows at least 100-fold lower potency in the 
cellular model (IC50 = 3,145 nM). The selectivity of BLU-285 has been discussed with the KINOMEscan data shown in 
the section on SM. 

PDGFRα D842V Inhibition 

Inhibitory potency of BLU-285 compared to imatinib. The inhibitory potency of BLU-285 and imatinib against PDGFRα D842V was 
evaluated in an in vitro enzyme activity assay and in a cellular model driven by an activated PDGFRα D842V mutant protein. 

We have demonstrated significant anti-tumor efficacy with BLU-285 in an imatinib-resistant patient-derived 

xenograft model with a KIT Exon 17 resistance mutation, similar to what is found in relapsed/refractory KIT-driven 
GIST as shown below. BLU-285 administered orally for 25 days resulted in tumor regression at the two highest tested 
doses, which were well-tolerated. 

15 

 
BLU-285 elicits dose-dependent tumor regression in a patient-derived GIST xenograft model with a KIT Exon 11 mutation and a KIT Exon 
17 resistance mutation. In the figure above, QD means once a day and BID means twice a day. 

In addition, we have developed an understanding of the biology that will inform the development of 
combinations to address these resistance mutations. We performed a comprehensive analysis of these secondary KIT 
Exon 17 mutations, analyzing the literature and unpublished data from opinion leaders to understand which mutations 
occur and to quantify their frequency in the clinical setting. We also conducted a series of in vitro biochemistry 
experiments using compounds from our proprietary compound library and currently available therapies (imatinib, 
sunitinib and regorafenib) to interrogate their activity against the range of KIT Exon 17 mutations. The result is a deep 
understanding of the spectrum of activity of BLU-285, additional compounds from our proprietary compound library 
and available therapies across the range of possible mutations. This will enable combination therapy development to 
address KIT Exon 17 secondary mutations. 

Phase 1 Clinical Trial for BLU-285 for Advanced GIST   

BLU-285 is currently being evaluated in the dose expansion stage of a Phase 1 clinical trial in patients with 

advanced GIST, and enrollment is ongoing. In January 2016, the FDA granted orphan drug designation to BLU-285 for 
the treatment of GIST. In October 2016, the FDA granted fast track designation to BLU-285 for the treatment of patients 
with unresectable or metastatic GIST that progressed following treatment with imatinib and a second tyrosine kinase 
inhibitor and for the treatment of patients with unresectable or metastatic GIST with the PDGFRα D842V mutation 
regardless of prior therapy. We plan to seek regulatory guidance on potential pathways for expedited clinical 
development of BLU-285 for the treatment of advanced GIST.   

In December 2016, we presented preliminary data from the dose escalation stage of this clinical trial in 

December 2016 at the 28th EORTC-NCI-AACR Symposium on Molecular Targets and Cancer Therapeutics. The data 
showed that BLU-285 was observed to be well-tolerated and had achieved proof-of-concept in PDGFRα-driven GIST 
and KIT-driven GIST. As of the data cutoff date of November 1, 2016, BLU-285 had been administered to 36 patients at 
seven dose levels ranging from 30 mg QD to 400 mg QD, including 18 patients with PDGFRα-driven GIST and 18 
patients with KIT-driven GIST. The median age was 61 (ranging from 41 to 77), and the median number of prior 
treatment regimens was 3.5 (ranging from zero to 12). Preliminary PK analysis at all dose levels demonstrated relatively 
rapid absorption of BLU-285 and a mean half-life of over 24 hours, which supports QD dosing.   

Preliminary Safety Data. As of the data cutoff date of November 1, 2016, BLU-285 was observed to be well-

tolerated at all doses. No dose-limiting toxicities or treatment-related Grade 4 or 5 adverse events were reported, and no 
patients discontinued treatment with BLU-285 due to treatment-related adverse events. The majority of adverse events 
reported by investigators were Grade 1 or 2. Across all grades, adverse events reported by investigators most commonly 
included nausea (42%), vomiting (33%), peripheral edema (31%), fatigue (28%) and constipation (22%). Investigators 
reported treatment-related Grade 3 adverse events in three patients: nausea and vomiting (one patient); anemia and 
intratumoral hemorrhage (one patient); and hypophosphatemia (one patient), a deficiency of phosphates in the blood.   

Preliminary Clinical Activity Data. As of the data cutoff date of November 1, 2016, 28 patients in the first six 

cohorts of the dose escalation stage of the clinical trial at doses ranging from 30 mg QD to 300 mg QD had completed at 

16 

 
least two 28-day dosing cycles and were evaluable for response assessment. Response assessments were based on CT 
and MRI imaging to measure clinical activity per Response Evaluation Criteria In Solid Tumors version 1.1, or RECIST. 

• 

• 

• 

In PDGFRα-driven GIST, investigators observed radiographic tumor reduction in 14 of 15 evaluable 
patients with six patients achieving a partial response, or PR, by RECIST (five confirmed, one 
unconfirmed). For a confirmed PR, the PR was maintained through two consecutive response 
assessments at least four weeks apart. For the unconfirmed PR, as of the data cutoff date, a second 
response assessment at least four weeks after the first response assessment was not available. Tumor 
reduction was observed at the first dose level in the PDGFRα-driven subgroup of advanced GIST.   

In KIT-driven GIST, investigators observed radiographic tumor reduction in five of the 13 evaluable 
patients, including one who achieved a PR by RECIST (confirmed). At the higher dose levels (greater 
than or equal to 135 mg), four out of six patients had tumor reduction, including the patient with a PR, 
which we believe suggests increased clinical activity with increased dose. Tumor reduction was first 
observed at the fourth dose level in the KIT-driven subgroup of advanced GIST.   

In addition, among all 36 patients administered BLU-285 for the treatment of advanced GIST, 
27 patients remained on BLU-285, including all 18 patients with PDGFRα-driven GIST. For these 36 
patients, the treatment duration ranged from 0.8 months to 12.3 months. Nine patients discontinued 
treatment with BLU-285 due to progressive disease.   

Clinical Development Plans. Our Phase 1 clinical trial for BLU-285 for the treatment of advanced GIST is 

designed to evaluate the safety and tolerability of BLU-285 in multiple ascending doses with the goal of establishing an 
MTD or a recommended dose if the MTD is not achieved. All patients will be tested retrospectively for both KIT Exon 
17 and PDGFRα D842 mutational status. An MTD for BLU-285 has been established at 400 mg QD in this clinical trial, 
and we have initiated enrollment in the dose expansion stage. In the expansion stage, we plan to enroll cohorts for 
patients who have received imatinib and at least one other KIT-directed tyrosine kinase inhibitor that selects for disease 
with the KIT Exon 17 mutation and for patients with disease carrying a PDGFRα D842 mutation. Additional primary 
objectives for the dose expansion stage include determining overall response rate, or ORR, by RECIST in GIST patients 
who have D842V mutant PDGFRα and determining ORR by RECIST in GIST patients that have progressed following 
treatment with imatinib and at least one other KIT-directed tyrosine kinase inhibitor and who are not known to have 
D842V mutant PDGFRα. Secondary objectives include characterizing the PK of BLU-285, assessing response rate by 
RECIST, anti-tumor activity by Choi criteria and allelic burden using circulating tumor DNA and comparing progression 
free survival, or PFS, for BLU-285 with PFS for each patient’s last prior anti-cancer therapy. The Phase 1 clinical trial is 
designed to enroll approximately 150 patients, including approximately 50 patients during dose escalation and 
approximately 100 additional patients in expansion cohorts, at multiple sites in the United States, European Union and 
Canada. 

Based on the preliminary safety profile and clinical activity observed in this clinical trial, we have increased the 

cohort size in the expansion stage to evaluate the potential of BLU-285 as a single agent therapy in PDGFRα-driven 
GIST and KIT-driven GIST and to accelerate our evaluation of expanded development options for BLU-285 in GIST, 
including opportunities to move to earlier lines of therapy and possible combinations. In addition, in August 2016, we 
entered into an agreement with QIAGEN Manchester Limited to develop and commercialize an assay as a companion 
diagnostic test to identify GIST patients with the PDGFRα D842V mutation for use with BLU-285. 

We are also working with patient advocacy groups relevant to GIST in order to: 

• 

• 

• 

raise awareness of our ongoing Phase 1 clinical trial; 

identify and use existing patient registries to identify patients for rapid enrollment; and 

incorporate the GIST patient perspective into our ongoing activities. 

17 

FGFR4 Inhibitor Program 

Overview 

BLU-554 is an orally available, potent, selective and irreversible inhibitor of the kinase FGFR4. FGFR4 

functions as a receptor whose aberrant activation is a driver of HCC. FGFR4 belongs to a family of highly homologous 
receptors, which include FGFR1-4. BLU-554 targets FGFR4, while sparing the other three FGFR paralogs, and 
demonstrates exquisite kinome selectivity. Pre-clinical in vitro and in vivo efficacy data provides a strong rationale for 
the development of BLU-554 for the subset of HCC patients whose tumors are driven by aberrant FGFR4 signaling. 
Based on a meta-analysis of publicly available HCC genomic datasets, we estimate that approximately 30% of patients 
with HCC have tumors with aberrantly activated FGFR4 signaling. 

HCC Disease Background 

Liver cancer is the second leading cause of cancer-related deaths worldwide, and HCC accounts for most liver 
cancers. The highest incidence of HCC occurs in regions with endemic hepatitis B virus, or HBV, including Southeast 
Asia and sub-Saharan Africa. In the United States, HCC is the fastest rising cause of cancer-related death. Over the past 
two decades, the incidence of HCC has tripled while the five-year survival rate has remained below 12%. 

Cirrhosis is a key risk factor for HCC — the disease etiology varies by geography with the common theme of 

chronic conditions that lead to cirrhosis. In North America, the main risk factors for cirrhosis are infection with hepatitis 
C virus, or HCV, followed by HBV infection, alcohol consumption and nonalcoholic steatohepatitis. In the European 
Union, the main risk factors for cirrhosis are HCV, HBV and alcohol consumption. In Asia and sub-Saharan Africa, the 
major risk factor is chronic HBV infection. 

The diagnosis of HCC is typically made in adults, peaking around age 70. Disease management is complicated 
by concurrent liver disease, which often compromises liver function in these patients. Patients are staged depending on 
extent of liver disease, performance status and liver function status; these factors guide treatment selection. The stage 
distribution at diagnosis varies by region. For example, countries such as Taiwan and Japan with active national 
screening programs tend to diagnose many more patients in the early stages of disease. There are currently no treatments 
for molecularly defined patient subgroups in HCC. 

The HCC treatment paradigm has advanced incrementally over the past decade. Patients diagnosed at an early 

stage receive potentially curative transplant, resection or ablative therapies. Intermediate to advanced stage patients 
receive high-dose chemotherapy delivered directly to the liver (transarterial chemoembolization) and ultimately 
sorafenib, the only approved systemic therapy for HCC, which became broadly available in the late 2000s. Sorafenib is a 
multi-kinase inhibitor that targets VEGFR and many other kinases and exhibits anti-angiogenic effects. In a pivotal trial 
conducted primarily in European Union and U.S. sites, sorafenib improved median overall survival by approximately 
three months, and 2% of patients responded. In clinical practice, patients often require dose modifications or discontinue 
therapy due to tolerability issues. There is a clear need for medical therapies with a favorable risk-benefit profile. 

FGFR4 as a Driver in HCC 

The link between aberrant FGFR4 signaling and HCC was first established when an amplicon, a region of 

replicated DNA, that includes FGF19, the ligand that activates FGFR4, was identified in HCC patients. We estimate that 
more than 5% of tumors of HCC patients have this amplicon. The physiologic role of the receptor, FGFR4, and its 
ligand, FGF19, is to regulate bile acid metabolism in hepatocytes and liver regeneration following injury. FGF19 is 
normally produced in the small intestine and signals to hepatocytes through an endocrine mechanism. FGF19 forms an 
active signaling complex together with FGFR4 and its co-receptor Klotho-β. Signaling of the active complex leads to 
decreased CYP7A1 transcription with a resultant decrease in bile acid synthesis, as well as increased growth, 
proliferation and survival signals. 

18 

FGFR4 Signaling in the Liver 

In the figure above, HBV means hepatitis B virus, HCV means hepatitis C virus, NASH means non-alcoholic steatohepatitis and KLB 
means Klotho‑β. 

Subsequent data suggest that FGFR4 signaling is a driver in a subset of HCC patients in whom the pathway is 
aberrantly activated. In these patients, FGF19 is overexpressed in hepatocytes (which do not normally express FGF19), 
leading to autocrine signaling and tumor growth. Pre-clinical experiments in a genetically engineered mouse model 
demonstrate that exogenous FGF19 expression is sufficient to induce liver tumor growth and that tumorigenesis is 
dependent on FGFR4. The three elements that constitute an active FGFR4 signaling complex, FGF19, FGFR4 and 
Klotho-β, are expressed together uniquely in HCC, although it is possible that they may also occur in rare cases of other 
solid tumors. 

We have used our novel drug discovery platform to identify a potentially broader target responder population in 

addition to the FGF19-amplified patient population. We estimate that approximately 25% of HCC tumors overexpress 
FGF19 without amplification. We have also demonstrated a significant anti-tumor response with an FGFR4 inhibitor in 
an HCC patient-derived xenograft model that overexpresses FGF19 in the absence of amplification. Some of these 
results were published in Cancer Discovery in 2015. Based on a meta-analysis of publicly available HCC genomic 
datasets, we estimate that approximately 30% of patients with HCC have tumors with aberrantly activated FGFR4 
signaling. 

The FGFR4 signaling pathway is a promising new driver for the development of molecularly targeted therapy 

in HCC. In the Major Markets, we estimate there are approximately 18,900 first line and approximately 8,000 second 
line HCC patients with aberrantly active FGFR4 signaling, as indicated by FGF19 overexpression. 

BLU-554 Pre-clinical Development in HCC 

Efforts to discover selective, reversible inhibitors of FGFR4 have been challenging given the high sequence 

similarity among the four FGFR paralogs. A cysteine located near the ATP binding site in FGFR4 is unique among the 
paralogs. We therefore focused on developing a covalent inhibitor with paralog specificity and kinome selectivity. Our 
team of experienced medicinal chemists applied structure-based design principles to develop a potent and selective 
FGFR4 inhibitor starting from known FGFR inhibitor templates. This effort yielded our development candidate, 
BLU-554. We have conducted comprehensive in vitro experiments to characterize the potency and selectivity of 
BLU-554. BLU-554 potently inhibits FGFR4 enzyme activity (IC50 = 5 nM) and inhibits the activity of FGFR1-3 at least 
100-fold less potently (IC50 ≥ 600 nM). In contrast, pan-FGFR inhibitors such as BGJ-398 fail to exhibit paralog 
specificity. The selectivity of BLU-554 was further evaluated by profiling BLU-554 at a concentration of 3 µM across a 
panel of over 450 kinases and disease relevant kinase mutants using KINOMEscan methodology. BLU-554 displayed 
significant binding (greater than 90% inhibition relative to control) only to FGFR4 in this assay. In contrast, BGJ-398 
significantly bound to 14 kinases (greater than 90% inhibition relative to control). 

19 

 
Paralog selectivity of BLU-554 compared to the pan-FGFR inhibitor BGJ-398. The inhibitory potency of BLU-554 and BGJ-398 against 
each of the FGFR paralogs was evaluated in an in vitro enzyme activity assay. 

Kinome selectivity of BLU-554 as determined using the KINOME scan assay. BLU-554 was screened at 3 µM against a panel of over 450 
kinases and disease-relevant mutants. Each branch of the dendogram represents an individual human kinase. Kinases bound by the 
compound are indicated by red circles on the kinome tree. The degree of binding corresponds to the size of the circle. Kinome illustration 
reproduced courtesy of CSTI (www.cellsignal.com). The foregoing website is maintained by CSTI, and Blueprint Medicines is not 
responsible for its content. 

We demonstrated significant anti-tumor efficacy with BLU-554 in two in vivo HCC xenograft models where 

tumor growth is driven by FGFR4 signaling. BLU-554 administered orally for 21 days resulted in robust and 
dose-dependent growth inhibition of Hep3B tumors, an FGF19-amplified model. At a dose of 100 mg/kg BID, a 
well-tolerated dose, BLU-554 induced complete remission in a subset of mice for at least 30 days after cessation of 
treatment. We observed a correlation between the concentration of BLU-554 in mouse plasma and the level of 
expression of CYP7A1, a downstream biomarker, in the tumor. At the 100 mg/kg BID dose, significant induction of 
CYP7A1 expression was seen, which is an expected consequence of inhibiting FGFR4 signaling. This correlation 
between BLU-554 plasma concentration, the level of induction of CYP7A1 expression and anti-tumor efficacy supports 
that the observed anti-tumor response is due to inhibition of FGFR4 signaling. 

BLU-554 elicits dose-dependent tumor inhibition in the Hep3B tumor xenograft mouse model, a model of FGF19 amplification. In the 
figure above, BID means twice a day and PO means orally. 

20 

 
 
 
Aberrant FGFR4 signaling can also be driven by FGF19 overexpression in the absence of amplification. Hence, 

we have also evaluated the anti-tumor efficacy of BLU-554 in a patient-derived xenograft model driven by FGF19 
overexpression in the absence of amplification. Treatment with BLU-554 led to dose-dependent tumor growth inhibition. 
The anti-tumor efficacy of sorafenib, the only approved systemic treatment for HCC, was also evaluated in this study. 
Sorafenib dosed once daily at 40 mg/kg, a dose that led to body weight loss in the mice, had only a modest effect on 
tumor growth. 

BLU-554 elicits dose-dependent tumor inhibition in a patient-derived tumor xenograft mouse model in which tumor growth is driven by 
FGF19 overexpression in the absence of FGF19 amplification. In the figure above, QD means once a day, BID means twice a day and 
PO means orally. 

Taken together, the data presented above indicate that potent and selective FGFR4 inhibition leads to robust 

anti-tumor effects in in vivo models where tumor growth is driven by FGF19 amplification or FGF19 overexpression in 
the absence of amplification.   

These findings, together with our estimate that, based on a meta-analysis of publicly available HCC genomic 

datasets, approximately 30% of patients with HCC have tumors with aberrantly activated FGFR4 signaling, provide 
critical information to identify a potential responder population and informed patient selection criteria in our Phase 1 
clinical trial.   

Phase 1 Clinical Trial for BLU-554 for the Treatment of Advanced HCC   

BLU-554 is currently being evaluated in the dose expansion stage of a Phase 1 clinical trial in patients with 

advanced HCC, and enrollment is ongoing. In September 2015, the FDA granted orphan drug designation to BLU-554 
for the treatment of HCC.   

In November 2016, we presented preliminary data from the dose escalation stage of this ongoing clinical trial at 

the 28th EORTC-NCI-AACR Symposium on Molecular Targets and Cancer Therapeutics. The data showed that BLU-
554 had achieved proof-of concept in this indication and an MTD had been established for BLU-554. As of the data 
cutoff date of November 7, 2016, BLU-554 had been administered to 25 patients in the dose escalation stage of the 
clinical trial at five dose levels (ranging from 140 mg QD to 900 mg QD), with the majority of patients having 
previously received sorafenib. Ten patients had confirmed tumor FGF19 overexpression using an investigational 
immunohistochemistry, or IHC, assay. PK data across all dose levels showed rapid oral absorption, a mean half-life of 
approximately 10 hours and exposure in the expected therapeutic range as predicted by HCC xenograft models in mice. 
PD data suggested that treatment with BLU-554 inhibited the FGFR4 pathway, as evidenced by effects on metabolic 
pathways downstream of FGFR4, with increases in the bile acid precursor C4, decreases in cholesterol and feedback 
upregulation of the ligand FGF19 in blood.   

Preliminary Safety Data. As of the data cutoff date of November 7, 2016, the majority of adverse events 
reported by investigators were Grade 1 or 2 and most commonly included diarrhea (72%), nausea (44%), abdominal pain 
(40%), vomiting (40%), fatigue (36%), transaminase elevation (alanine aminotransferase, or ALT (32%) and aspartate 
aminotransferase, or AST (28%)) and decreased appetite (24%). Investigators reported Grade 3 or higher adverse events 
in 17 patients. Grade 3 or worse adverse events occurring in three or more patients included anemia, elevated 
transaminases (AST and ALT), abdominal pain and decreased lymphocytes. The MTD for BLU-554 was identified to be 
600 mg QD. Two patients experienced dose-limiting toxicities at 900 mg (Grade 3 abdominal pain and Grade 3 fatigue). 
Only two patients discontinued treatment with BLU-554 due to treatment-related toxicities (Grade 4 increased AST and 

21 

 
Grade 3 hemorrhage). The case of Grade 3 hemorrhage occurred in a patient treated at 900 mg, which was above the 
MTD.   

Preliminary Clinical Activity Data. As of the data cutoff date of November 7, 2016, 25 patients in the first five 

cohorts of the dose escalation stage of the clinical trial (at doses ranging from 140 mg QD to 900 mg QD) were 
evaluable for clinical activity.   

• 

Investigators observed one patient with a confirmed PR, who remained on the clinical trial for eight 
28-day dosing cycles, and 12 patients with stable disease, including seven who had tumor reduction 
but did not reach the threshold for a PR.   

•  Of 10 evaluable patients with FGF19 overexpression in their tumors, five had radiographic tumor 
reduction, including one patient with a confirmed PR. Seven of the 10 patients with FGF19 
overexpression remained on the clinical trial as of the data cutoff date.   

•  Among all 25 evaluable patients, seven patients remained on treatment as of the data cutoff date, with 
treatment duration ranging from 0.8 to 7.6 months. Eighteen patients discontinued treatment with 
BLU-554, including 15 patients due to disease progression, two patients due to treatment-related 
adverse events and one patient due to the investigator’s decision.   

Clinical Development Plans. Our Phase 1 clinical trial for BLU-554 is designed to evaluate the safety and 

tolerability of BLU-554. Based on the observed mean half-life of approximately 10 hours for BLU-554 on a QD dosing 
schedule, we recently amended the protocol for this clinical trial to also explore a BID dosing schedule for BLU-554. 
For the QD dosing schedule, we have initiated enrollment of the biomarker-selected expansion cohorts for this clinical 
trial at the MTD of 600 mg QD. In the expansion stage for the QD dosing schedule, patients will be prospectively 
evaluated for tumor expression of FGF19 using an investigational IHC assay in three subsets with a range of tumors 
expressing FGF19. Two subsets of patients will be selected to have tumors that overexpress FGF19 (confirmed by the 
IHC assay), which is indicative of autocrine physiology where FGF19 is produced by the tumor cells in the liver. One of 
the patient subsets with tumors that overexpress FGF19 will have FGF19 gene amplification (confirmed by fluorescence 
in situ hybridization). The third subset of patients will be selected to have tumor FGF19 expression of less than 1% by 
the IHC assay, which is indicative of normal endocrine physiology, where FGF19 is produced by the intestines. For the 
BID dosing schedule, we plan to evaluate BLU-554 with BID dosing in multiple ascending doses with the goal of 
establishing an MTD for BID dosing or a recommended dose for BID dosing if the MTD for BID is not achieved. Once 
the MTD for BID dosing is reached, or a recommended dose for BID dosing is established, we will evaluate whether to 
open biomarker-selected expansion cohorts for a BID dosing schedule. Secondary objectives for this clinical trial include 
assessing overall response rate by RECIST criteria, the PK of BLU-554 and PD markers of BLU-554 activity. The Phase 
1 clinical trial is designed to enroll approximately 130 patients, including approximately 40 patients during dose 
escalation for both QD and BID dosing schedules and approximately 90 additional patients in expansion cohorts for both 
QD and BID dosing schedules, at multiple sites in the United States, European Union and Asia. 

Based on the preliminary data, we also plan to accelerate our evaluation of expanded development options for 
BLU-554 in HCC, including opportunities to move to earlier lines of therapy and possible combinations. In addition, in 
March 2015, we entered into an agreement with Ventana Medical Systems, Inc. to develop and commercialize an IHC 
assay as a companion diagnostic test for use with BLU-554 to identify HCC patients with aberrantly active FGFR4 
signaling as indicated by FGF19 protein overexpression. 

RET Program 

Overview 

BLU-667 is an orally available, potent selective inhibitor of the kinase RET and predicted RET resistant 

mutants. RET is a receptor tyrosine kinase that activates multiple downstream pathways involved in cell proliferation 
and survival. RET can be activated by mutation or when a portion of the RET gene that encodes the kinase domain is 
joined to part of another gene creating a fusion gene that encodes an aberrantly activated RET fusion protein. RET 
activating mutations are implicated in MTC (approximately 60% of patients), and RET fusions are implicated in several 
cancers, including papillary thyroid carcinoma (approximately 10% of patients) and NSCLC (1-2% of patients). Our 
genomics analyses on the landscape of kinase fusions, published in Nature Communications in 2014, identified RET 

22 

fusions in breast and colon cancer patient samples (both <1% of patients), providing a therapeutic rationale for the use of 
RET inhibitors in multiple patient subpopulations. 

The identification of RET fusions as drivers in some cancers prompted the use of approved multi-kinase 
inhibitors with RET inhibitory activity to treat patients whose tumors express a RET fusion protein. However, we 
believe these drugs cannot be dosed at levels required to sufficiently inhibit RET due to toxicities that result from 
inhibition of the primary targets. Further, one of the greatest challenges in treating cancer is the ability of tumor cells to 
become resistant to therapy. Kinase reactivation via mutation is a common mechanism of resistance. We have predicted 
future resistance mutations of drugs with RET inhibitory activity and are collaborating with opinion leaders to 
understand patterns of emerging clinical resistance. Thus, there is a clear need for a selective RET inhibitor that targets 
both wild-type RET fusions and their predicted RET resistant mutants. In the Major Markets, we estimate there are 
approximately 10,000 patients with RET-driven NSCLC and approximately 600 patients with RET-driven MTC.   

BLU-667 Pre-Clinical Development in RET 

We have conducted pre-clinical experiments to characterize the potency of BLU-667 in biochemical and 
cellular assays. BLU-667 potently inhibits the kinase activity of both wild-type RET and predicted RET resistant 
mutants in vitro (IC50 of 0.4 nM and 0.3 nM, respectively). We have also assessed a panel of seven clinically-approved 
multi-kinase inhibitors with RET inhibitory activity in these assays. These compounds inhibit the kinase activity of the 
RET resistant mutant between 1 to >1000-fold less potently than wild-type RET. In cellular models driven by either a 
wild-type RET fusion or resistant RET fusions, BLU-667 exhibited similar potent growth inhibitory activity in both cell 
lines (IC50 of 116.5 nM). In contrast, the multi-kinase inhibitors exhibited between 1 to >100-fold less growth inhibitory 
activity against the cell line driven by the mutant RET fusion as compared to the wild-type RET fusion. 

IC50(nM) 

BLU-667 
Vandetanib 
Cabozantinib 
Regorafenib 
Sorafenib 
Ponatinib 
Lenvatinib 
Sunitinib 

Biochemical 
RET 
Resistant 
Mutant 
0.3 
3597 
162 
70 
91 
4 
430 
1.6 

RET wt 
0.4 
4 
11 
12 
5.6 
0.6 
1.5 
2.7 

Cellular 

KDR/ 

VEGFR2  RET wt 

35 
4 
2 
14 
20 
2 
4 
85 

16.5 
793 
341 
186 
260 
10 
115 
734 

RET 
Resistant 
Mutant 
15.3 
9228 
5582 
2884 
2816 
267 
13572 
892 

Potency of BLU-667 against wild-type RET and a predicted RET resistant mutant compared to a panel of clinically-approved multi-kinase 
inhibitors with RET inhibitory activity. The inhibitory potencies of BLU-667 and the multi-kinase inhibitors against wild-type RET, RET 
resistant mutant protein and KDR/VEGFR2 were evaluated in in vitro enzyme activity assays. The inhibitory potencies of these compounds 
were also evaluated in cell lines driven by either a wild-type RET fusion or a mutant RET fusion. 

We have demonstrated significant anti-tumor efficacy with BLU-667 in both a wild-type RET fusion allograft 
and a predicted RET resistant mutant allograft. Administration of our compound orally BID for 14 days in a wild-type 
RET fusion allograft and for 14 days in a predicted RET resistant mutant allograft resulted in robust and dose-dependent 
tumor growth inhibition. At a dose of 30 mg/kg BID, a well-tolerated dose, the compound induced tumor regression in 
both models. The anti-tumor efficacy of a multi-kinase inhibitor with RET inhibitory activity that is being evaluated in 
the clinic for treatment of patients with RET fusion positive lung cancer (reference compound) was also evaluated in 
these models. This reference compound, dosed orally once daily at 60 mg/kg, a well-tolerated dose, inhibited tumor 
growth in the wild-type RET fusion allograft. At the same dose level in the RET resistant mutant allograft, this reference 
compound showed diminished inhibition of tumor growth. 

23 

 
 
BLU-667, a RET inhibitor, elicits dose dependent tumor growth inhibition in both a wild-type RET fusion allograft and a predicted RET 
resistant mutant allograft model. In the figure above, BID means twice a day, and QD means once a day. 

Phase 1 Clinical Trial for BLU-667 for the Treatment of NSCLC, MTC and Other Advanced Solid Tumors 

In December 2016, the FDA approved our IND application for BLU-667 for the treatment of NSCLC, thyroid 
cancer and other advanced solid tumors, and we expect to initiate a Phase 1 clinical trial for BLU-667 for the treatment 
of NSCLC, MTC and other advanced solid tumors in the first half of 2017. 

Our Phase 1 clinical trial of BLU-667 in RET is designed to evaluate the safety and tolerability of BLU-667 in 
multiple ascending doses in patients with NSCLC, MTC and other advanced solid tumors with the goal of establishing 
an MTD or a recommended dose if the MTD is not achieved. Once the MTD is reached, or a recommended dose is 
established, we plan to open expansion cohorts for the following four patient groups: (1) NSCLC patients with a RET 
rearrangement who have undergone prior treatment with a tyrosine kinase inhibitor, or TKI, that inhibits RET; (2) 
NSCLC patients with a RET rearrangement who have never undergone treatment with a TKI that inhibits RET; (3) 
patients with MTC; and (4) patients with RET-altered solid tumors, other than NSCLC and MTC. Secondary objectives 
for this Phase 1 clinical trial include assessing the PK profile of BLU-667, assessing RET gene status in plasma and 
tumor tissue, characterizing the PD of BLU-667 and assessing response rate by RECIST. The Phase 1 clinical trial is 
designed to enroll approximately 115 patients, including approximately 35 patients during dose escalation and 
approximately 80 additional patients in expansion cohorts, at multiple sites in the United States and the European Union.   

Collaborations and Partnerships 

Alexion 

In March 2015, we entered into the Alexion agreement to research, develop and commercialize drug candidates 

for an undisclosed activated kinase target, which is the cause of a rare genetic disease. Under the terms of this 
agreement, we are responsible for research and pre-clinical development activities related to drug candidates and 
Alexion is responsible for all clinical development, manufacturing and commercialization activities related to drug 
candidates. 

Alexion is responsible for funding 100% of our research and development costs incurred under the research 

plan, including pass-through costs and a negotiated yearly rate per full-time equivalent for our employees’ time and their 
associated overhead expenses. We received a $15.0 million non-refundable upfront payment in March 2015 upon 
execution of the Alexion agreement and are eligible to receive over $250.0 million in payments upon the successful 
achievement of pre-specified pre-clinical, clinical, regulatory and commercial milestones as follows: (i) up to $6.0 
million in pre-clinical milestone payments for the first licensed product, (ii) up to $83.0 million and $61.5 million in 
development milestone payments for the first and second licensed products, respectively, and (iii) up to $51.0 million in 
commercial milestone payments for each of the first and second licensed products. We have recognized and received an 
aggregate of $3.8 million in milestone payments from Alexion through December 31, 2016. Alexion will pay us tiered 
royalties, ranging from mid-single to low-double digit percentages, on a country-by-country and licensed-product-by-
licensed-product basis, on worldwide net product sales of licensed products. The royalty term for each licensed product 
in each country is the period commencing with first commercial sale of such licensed product in such country and ending 
on the later of (i) the expiration of the last-to-expire valid claim of specified patents covering such licensed product, (ii) 
the expiration of the applicable regulatory exclusivity period, and (iii) 10 or 15 years from specified commercial sales. 

24 

 
The term of the Alexion agreement will expire on a country-by-country basis and a licensed-product-by-

licensed-product basis at the end of each applicable royalty term, unless terminated earlier by either party. Alexion has 
the right to terminate the Alexion agreement if we undergo a change of control or become an affiliate of a biotechnology 
or pharmaceutical company, and may terminate the Alexion agreement at will upon 90 days’ prior written notice. We 
and Alexion have the right to terminate the Alexion agreement in the event of the other party’s uncured breach or 
insolvency, and in certain other circumstances agreed to by the parties. 

Roche 

In March 2016, we entered into the Roche agreement pursuant to which we and Roche have agreed to 

collaborate on the discovery, development and commercialization of up to five small molecule therapeutics targeting 
kinases believed to be important in cancer immunotherapy, as single products or possibly in combination with other 
therapeutics. The parties initiated activities for three of the collaboration programs in 2016, and the parties have agreed 
to work together to use our novel target discovery engine and proprietary compound library to select targets for up to 
two additional collaboration programs. 

Under the Roche agreement, Roche is granted up to five option rights to obtain an exclusive license to exploit 

products derived from the collaboration programs, or licensed products, in the field of cancer immunotherapy. Such 
option rights are triggered upon the achievement of Phase 1 proof-of-concept. For up to three of the five collaboration 
programs, if Roche exercises its option, Roche will receive worldwide, exclusive commercialization rights for the 
licensed products. For up to two of the five collaboration programs, if Roche exercises its option, we will retain 
commercialization rights in the United States for the licensed products, and Roche will receive commercialization rights 
outside of the United States for the licensed products. We will also retain worldwide rights to any products for which 
Roche elects not to exercise its applicable option. Prior to Roche’s exercise of an option, we will have the lead 
responsibility for drug discovery and pre-clinical development of all collaboration programs. In addition, we will have 
the lead responsibility for the conduct of all Phase 1 clinical trials other than those Phase 1 clinical trials for any product 
in combination with Roche’s portfolio of therapeutics, for which Roche will have the right to lead the conduct of such 
Phase 1 clinical trials. Pursuant to the Roche agreement, the parties will share the costs of Phase 1 development for each 
collaboration program. In addition, Roche will be responsible for post-Phase 1 development costs for each licensed 
product for which it retains global commercialization rights, and we and Roche will share post-Phase 1 development 
costs for each licensed product for which we retain commercialization rights in the United States. 

We received an upfront cash payment of $45.0 million in March 2016 upon execution of the Roche agreement, 

and subject to the terms of the Roche agreement, we will be eligible to receive up to approximately $965.0 million in 
contingent option fees and milestone payments related to specified research, pre-clinical, clinical, regulatory and sales-
based milestones. Of the total contingent payments, up to approximately $215.0 million are for option fees and milestone 
payments for research, pre-clinical and clinical development events prior to licensing across all five potential 
collaboration programs, including contingent milestone payments for initiation of each of the collaboration programs for 
which the parties will work together to select targets. In addition, for any licensed product for which Roche retains 
worldwide commercialization rights, we will be eligible to receive tiered royalties ranging from low double-digits to 
high-teens on future net sales of the licensed product. For any licensed product for which we retain commercialization 
rights in the United States, we and Roche will be eligible to receive tiered royalties ranging from mid-single-digits to 
low double-digits on future net sales in the other party’s respective territories in which it commercializes the licensed 
product. The upfront cash payment and any payments for milestones, option fees and royalties are non-refundable, non-
creditable and not subject to set-off. 

Under the Roche agreement, each party has granted the other party specified intellectual property licenses to 
enable the other party to perform its obligations and exercise its rights under the Roche agreement, including license 
grants to enable each party to conduct research, development and commercialization activities pursuant to the terms of 
the Roche agreement. Following Roche’s exercise of its option with respect to the collaboration programs for which it 
will obtain worldwide rights, we will grant Roche an exclusive license under our intellectual property to develop and 
commercialize the licensed products generated through such collaboration program. Similarly, Roche will grant us an 
exclusive license under Roche’s intellectual property to develop and commercialize licensed products in the United 
States for the collaboration programs on which we will retain rights in the United States, with Roche receiving a license 
under our intellectual property to develop and commercialize such licensed products outside of the United States. 

25 

 
 
 
 
Subject to the terms and conditions of the Roche agreement, we have agreed to work exclusively with Roche 

with respect to each collaboration target, and we have agreed to work exclusively within the field of cancer 
immunotherapy for a period of up to 30 months after the execution of the Roche agreement. In addition, subject to 
specified exceptions, Roche has a right of first negotiation in the event that we desire to grant any third party rights to 
develop or commercialize a licensed product under either of the collaboration programs for which we will retain 
commercialization rights in the United States. Roche’s right of first negotiation will not apply in connection with a 
change of control of us, an assignment by us in accordance with the terms of the Roche agreement or certain agreements 
with contract research organizations, contract manufacturing organizations, academic institutions, not-for-profit third 
parties or distributors.   

The Roche agreement will continue until the date when no royalty or other payment obligations are or will 

become due, unless earlier terminated in accordance with the terms of the Roche agreement. Prior to its exercise of its 
first option, Roche may terminate the Roche agreement at will, in whole or on a collaboration target-by-collaboration 
target basis, upon 120 days’ prior written notice to us. Following its exercise of an option, Roche may terminate the 
Roche agreement at will, in whole, on a collaboration target-by-collaboration target basis, on a collaboration program-
by-collaboration program basis or, if a licensed product has been commercially sold, on a country-by-country basis, (i) 
upon 120 days’ prior written notice if a licensed product has not been commercially sold or (ii) upon 180 days’ prior 
written notice if a licensed product has been commercially sold. Either party may terminate the Roche agreement for the 
other party’s uncured material breach or insolvency and in certain other circumstances agreed to by the parties. In certain 
termination circumstances, we are entitled to retain specified licenses to be able to continue to exploit the licensed 
products. 

Ventana 

In March 2016, we entered into a master collaboration agreement and project schedules, which we refer to 

collectively as the Ventana agreement, with Ventana, a member of the Roche Group. Pursuant to the Ventana agreement, 
Ventana has agreed to develop and commercialize an assay as a companion diagnostic test to identify HCC patients with 
aberrantly active FGFR4 signaling as indicated by FGF19 protein overexpression for use with BLU-554. FGF19 is a 
ligand that activates FGFR4, a kinase that is aberrantly activated and is a driver of disease in a subset of patients with 
HCC. The parties anticipate using Ventana’s investigational immunohistochemistry, or IHC, assay to initially develop 
the companion diagnostic test. IHC is a process of detecting proteins in tissue cells. 

Under the Ventana agreement, Ventana is responsible for developing, and obtaining and maintaining regulatory 

approvals for, the companion diagnostic test in the United States, specified countries in the European Union, any other 
countries that recognize the CE/in vitro diagnostic self-registration process and such other countries as the parties may 
mutually agree. If despite using commercially reasonable efforts Ventana fails, or refuses to seek, obtain or maintain 
regulatory approvals for, the companion diagnostic test in any country in which Ventana is responsible for obtaining and 
maintaining regulatory approvals, or in the case of certain specified supply failures or failures to commercialize the 
companion diagnostic test in any such country, then the parties will negotiate in good faith to select, agree upon and 
implement one or more alternative arrangements that are reasonably acceptable to the parties for the companion 
diagnostic test in such country or countries.   

Pursuant to the Ventana agreement, the parties will form a joint steering committee comprised of an equal 

number of representatives from us and Ventana. The joint steering committee will oversee the activities under the 
Ventana agreement and any project schedule. Upon the request of either party, the joint steering committee will form 
one or more of the following committees: a joint development committee, joint commercialization committee or joint 
patent committee.   

Under the Ventana agreement, each party has granted the other party specified intellectual property licenses to 
enable the other party to perform its obligations and exercise its rights under the Ventana agreement, including license 
grants to enable Ventana to develop and commercialize companion diagnostic tests for use with any of our products that 
are the subject of the Ventana agreement and to enable us to develop and commercialize its products with any 
companion diagnostic test developed by Ventana under the Ventana agreement. Certain of the license rights granted by 
each party generally survive termination of the Ventana agreement. Ventana remains free to develop its companion 
diagnostic tests for use with a third party’s therapeutic products, and we remain free to engage a third party to develop 
other companion diagnostic tests for use with BLU-554 and any of our other drug candidates.   

26 

 
 
 
 
 
 
Subject to the terms of the Ventana agreement, we will pay Ventana an aggregate amount of up to 

approximately $12.3 million over the term of the development program for the companion diagnostic test for BLU-554. 
In addition, we will reimburse Ventana for certain pass-through costs and will be obligated to pay Ventana up to an 
additional $2.0 million if we elect to have Ventana perform additional optional validation studies specified in the 
Ventana agreement. These amounts are subject to adjustment if the parties determine that changes in the scope of the 
development program are required. In addition, Ventana will retain all proceeds from the commercialization of the 
companion diagnostic test. 

The Ventana agreement will continue until terminated by either party in accordance with its terms. If all 

projects under the Ventana agreement have been terminated in accordance with the terms of the Ventana agreement, 
either party may terminate the Ventana agreement for convenience upon 30 days’ prior written notice to the other party. 
We are permitted to terminate any project under the Ventana agreement upon 30 days’ prior written notice to Ventana in 
the event we cease to continue developing or commercializing the applicable product or for convenience and, under 
specified circumstances, payment of a termination fee and wind-down costs. Ventana is permitted to terminate any 
project under the Ventana agreement upon 30 or 180 days’ prior written notice to us depending on the circumstances of 
such termination. Either party may terminate the Ventana agreement upon a material breach of the other party that is not 
cured within 60 days after written notice of such breach or immediately upon the bankruptcy or insolvency of the other 
party.   

Qiagen 

In August 2016, we entered into a master collaboration agreement and a project schedule, which we refer to 

collectively as the Qiagen agreement, with Qiagen. Pursuant to the Qiagen agreement, Qiagen has agreed to develop and 
commercialize an assay as a companion diagnostic test to identify GIST patients with the PDGFRα D842V mutation for 
use with BLU-285, one of our lead drug candidates.   

Under the Qiagen agreement, Qiagen is responsible for developing, and obtaining and maintaining regulatory 
approvals for, the companion diagnostic test in the United States, the European Union, Canada and such other countries 
as the parties may mutually agree. In addition, Qiagen has agreed to use commercially reasonable efforts to manufacture 
the companion diagnostic test and to make the companion diagnostic test commercially available in the United States, 
the major European markets, Canada and such other countries as the parties may mutually agree. Under the Qiagen 
agreement, Qiagen has agreed to undertake specified actions to minimize the risk of an inability of supply occurring for 
the manufacture of the companion diagnostic test, and if Qiagen elects not to commercialize the companion diagnostic 
test itself in any country, Qiagen has agreed to procure alternative distribution channels or otherwise supply the 
companion diagnostic test to us in such quantities and upon commercially reasonable terms as necessary in order to 
enable us to market BLU-285 for GIST patients with the PDGFRα D842V mutation in combination with the companion 
diagnostic test. Qiagen remains free to develop its companion diagnostic tests for use with a third party’s therapeutic 
products, and we remain free to engage a third party to develop other companion diagnostic tests for use with BLU-285 
and any of our other drug candidates. 

Subject to the terms of the Qiagen agreement and upon achievement of specified technical and development 

milestones, we will pay Qiagen an aggregate amount of up to approximately $6.1 million over the term of the 
development program for the companion diagnostic test for BLU-285. In addition, we will reimburse Qiagen for certain 
pass-through costs. These amounts are subject to adjustment if the parties determine that changes in the scope of the 
development program are required. In addition, Qiagen will retain all proceeds from the commercialization of the 
companion diagnostic test. 

The Qiagen agreement expires on the later to occur of (i) the fifth anniversary of the Qiagen agreement and (ii) 

the term of any project schedule executed under the Qiagen agreement. We may terminate the Qiagen agreement or a 
project schedule (i) upon 30 days’ prior written notice to Qiagen if such termination is due to our cessation of further 
development of BLU-285 or any other drug candidate covered by a project schedule executed under the Qiagen 
agreement and (ii) for convenience upon 120 day’s prior written notice to Qiagen. Either party may terminate the Qiagen 
agreement or any project schedule executed under the Qiagen agreement, as applicable, upon a material breach of the 
other party that is not cured within 30 days after written notice of such breach or immediately upon the bankruptcy or 
insolvency of the other party. In the event of a termination of the Qiagen agreement by us, we will be obligated to pay 
Qiagen wind-down and other costs and final payments. 

27 

 
 
 
 
 
 
Intellectual Property 

Our commercial success depends in part on our ability to obtain and maintain proprietary or intellectual 

property protection for our drug candidates, including BLU-285, BLU-554 and BLU-667, and our core technologies, 
including our novel target discovery engine and our proprietary compound library, and other know-how; to operate 
without infringing on the proprietary rights of others; and to prevent others from infringing our proprietary or intellectual 
property rights. Our policy is to seek to protect our proprietary and intellectual property position by, among other 
methods, filing U.S., international and foreign patent applications related to our proprietary technology, inventions and 
improvements that are important to the development and implementation of our business. We also rely on trade secrets, 
know-how and continuing technological innovation to develop and maintain our proprietary and intellectual property 
position. 

We file patent applications directed to our drug candidates in an effort to establish intellectual property 
positions regarding these new chemical entities as well as uses of these new chemical entities in the treatment of 
diseases. We also file patent applications directed to novel fusions that we have discovered through our target discovery 
engine and the use of these fusions in diagnosing and treating disease. As of February 28, 2017, we owned seven issued 
U.S. patents, 20 pending U.S. patent applications, 7 pending U.S. provisional applications, 87 foreign patent applications 
pending in a number of jurisdictions, including Australia, Brazil, Canada, China, the European Union, Israel, India, 
Japan, South Korea, Mexico New Zealand, Russia, South Africa, one issued foreign patent, and six pending Patent 
Cooperation Treaty, or PCT, patent applications. Our pending patent applications pertain to our key research and 
development programs, specifically our KIT program, our FGFR4 program and our RET program; and our pipeline, 
specifically novel recurrent fusions. Our issued U.S. patents are projected to expire between 2033 and 2034, and any 
patents that may issue from our pending U.S. applications would be projected to expire between 2034 and 2037. 

The intellectual property portfolios for our most advanced drug candidates as of February 28, 2017 are 

summarized below. Each of these portfolios is in its very early stages and, with respect to most of the pending patent 
applications covering our drug candidates, prosecution has just begun or is in progress. Prosecution is a lengthy process, 
during which the scope of the claims initially submitted for examination by the USPTO often significantly narrowed by 
the time they issue, if they issue at all. We expect this to be the case with respect to our pending patent applications 
referred to below. 

KIT 

The intellectual property portfolio for our KIT program contains patent applications directed to compositions of 
matter for BLU-285 and analogs, compositions of matter for KIT inhibitors with different compound families, as well as 
methods of use for these novel compounds. As of February 28, 2017, we owned three issued US patents, five pending 
U.S. patent applications, 28 pending foreign patent applications in a number of jurisdictions, including Argentina, 
Australia, Bolivia, Brazil, Canada, China, the European Union, Israel, India, Japan, South Korea, Mexico New Zealand, 
Pakistan, Russia, South Africa, Taiwan and Venezuela, and one pending PCT patent applications directed to our KIT 
program, including BLU-285. Any U.S. or ex-U.S. patents issuing from the pending applications covering BLU-285 will 
have a statutory expiration date of October 2034. Patent term adjustments or patent term extensions could result in later 
expiration dates. 

FGFR4 

The intellectual property portfolio for our FGFR4 program contains patent applications directed to 

compositions of matter for BLU-554 and analogs, as well as compositions of matter for FGFR4 inhibitors with multiple 
compound families. The portfolio also includes patent applications directed to methods of use for the novel compounds 
as well as patent applications directed broadly to FGFR4 selective inhibitors. As of February 28, 2017, we owned four 
issued U.S. patents, three pending U.S. patent applications, two pending U.S. provisional applications, 44 foreign patent 
applications in a number of jurisdictions, including Australia, Brazil, Canada, China, the European Union, Israel, India, 
Japan, South Korea, Mexico New Zealand, Russia, South Africa, and one issued foreign patent directed to our FGFR4 
program, including BLU-554. Any U.S. or ex-U.S. patent issuing from the pending applications covering BLU-554 will 
have a statutory expiration date of July 2033, December 2033, October 2034 or September 2037. Patent term 
adjustments or patent term extensions could result in later expiration dates. 

28 

RET 

The intellectual property portfolio for our RET program contains patent applications directed to compositions 
of matter for BLU-667 and analogs, compositions of matter for other inhibitors of predicted RET resistant mutants and 
methods of use for these novel compounds. As of February 28, 2017, we owned one pending U.S. patent application, 
two pending PCT applications, two pending foreign patent applications filed in Argentina and Taiwan, and three pending 
provisional U.S. patent applications directed to our RET program, which, if issued, will have statutory expiration dates 
of 2036 or 2037.   

Platform 

The intellectual property portfolio directed to our platform includes patent applications directed to novel gene 
fusions and the uses of these fusions for detecting and treating conditions implicated with these fusions. As of February 
28, 2017, we owned nine pending U.S. patent applications, nine pending European Union patent applications and one 
pending PCT patent applications directed to this technology, which, if issued, will have statutory expiration 
dates ranging from 2034 to 2035. 

The term of individual patents depends upon the legal term for patents in the countries in which they are 

obtained. In most countries, including the United States, the patent term is 20 years from the earliest filing date of 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 U.S. Patent and Trademark Office, or the USPTO, in 
examining and granting a patent, or may be shortened if a patent is terminally disclaimed over an earlier filed patent. The 
term of a patent that covers a drug or biological product may also be eligible for patent term extension when FDA 
approval is granted, provided statutory and regulatory requirements are met. See “— Government Regulation — U.S. 
Patent Term Restoration and Marketing Exclusivity” below for additional information on such exclusivity. In the future, 
if and when our drug candidates receive approval by the FDA or foreign regulatory authorities, we expect to apply for 
patent term extensions on issued patents covering those drugs, depending upon the length of the clinical trials for each 
drug and other factors. There can be no assurance that any of our pending patent applications will issue or that we will 
benefit from any patent term extension or favorable adjustment to the term of any of our patents. 

As with other biotechnology and pharmaceutical companies, our ability to maintain and solidify our proprietary 

and intellectual property position for our drug candidates and technologies will depend on our success in obtaining 
effective patent claims and enforcing those claims if granted. However, our pending patent applications, and any patent 
applications that we may in the future file or license from third parties may not result in the issuance of patents. We also 
cannot predict the breadth of claims that may be allowed or enforced in our patents. Any issued patents that we may 
receive in the future may be challenged, invalidated or circumvented. For example, we cannot be certain of the priority 
of inventions covered by pending third-party patent applications. If third parties prepare and file patent applications in 
the United States that also claim technology or therapeutics to which we have rights, we may have to participate in 
interference proceedings in the USPTO to determine priority of invention, which could result in substantial costs to us, 
even if the eventual outcome is favorable to us, which is highly unpredictable. In addition, because of the extensive time 
required for clinical development and regulatory review of a drug candidate we may develop, it is possible that, before 
any of our drug candidates can be commercialized, any related patent may expire or remain in force for only a short 
period following commercialization, thereby limiting protection such patent would afford the respective product and any 
competitive advantage such patent may provide. 

In addition to patents, we rely upon unpatented trade secrets and know-how and continuing technological 

innovation to develop and maintain our competitive position. We seek to protect our proprietary information, in part, by 
executing confidentiality agreements with our collaborators and scientific advisors, and non-competition, 
non-solicitation, confidentiality, and invention assignment agreements with our employees and consultants. We have 
also executed agreements requiring assignment of inventions with selected scientific advisors and collaborators. The 
confidentiality agreements we enter into are designed to protect our proprietary information and the agreements or 
clauses requiring assignment of inventions to us are designed to grant us ownership of technologies that are developed 
through our relationship with the respective counterparty. We cannot guarantee, however, that these agreements will 
afford us adequate protection of our intellectual property and proprietary information rights. 

With respect to the building of our proprietary compound library, we consider trade secrets and know-how to be 
our primary intellectual property. Trade secrets and know-how can be difficult to protect. In particular, we anticipate that 

29 

with respect to our discovery platform, these trade secrets and know-how will over time be disseminated within the 
industry through independent development and public presentations describing the methodology. 

Competition 

The pharmaceutical and biotechnology industries are characterized by rapidly advancing technologies, intense 
competition and a strong emphasis on proprietary drugs. While we believe that our technology, development experience 
and scientific knowledge provide us with competitive advantages, we face potential competition from many different 
sources, including major pharmaceutical, specialty pharmaceutical and biotechnology companies, academic institutions 
and governmental agencies and public and private research institutions. Any drug candidates that we successfully 
develop and commercialize will compete with existing drugs and new drugs that may become available in the future. 

We compete in the segments of the pharmaceutical, biotechnology and other related markets that address 

inhibition of kinases in cancer and other rare genetic diseases. There are other companies working to develop therapies 
in the field of kinase inhibition for cancer and other diseases. These companies include divisions of large pharmaceutical 
companies and biotechnology companies of various sizes. 

Many of the companies against which we are competing or against which we may compete in the future have 
significantly greater financial resources and expertise in research and development, manufacturing, pre-clinical testing, 
conducting clinical trials, obtaining regulatory approvals and marketing approved drugs than we do. Mergers and 
acquisitions in the pharmaceutical, biotechnology and diagnostic industries may result in even more resources being 
concentrated among a smaller number of our competitors. Smaller or early stage companies may also prove to be 
significant competitors, particularly through collaborative arrangements with large and established companies. These 
competitors also compete with us in recruiting and retaining qualified scientific and management personnel and 
establishing clinical trial sites and patient registration for clinical trials, as well as in acquiring technologies 
complementary to, or necessary for, our programs. 

Our commercial opportunity could be reduced or eliminated if our competitors develop and commercialize 

drugs that are safer, more effective, have fewer or less severe side effects, are more convenient or are less expensive than 
any drugs that we or our collaborators may develop. Our competitors also may obtain FDA or other regulatory approval 
for their drugs more rapidly than we may obtain approval for ours, which could result in our competitors establishing a 
strong market position before we or our collaborators are able to enter the market. The key competitive factors affecting 
the success of all of our drug candidates, if approved, are likely to be their efficacy, safety, convenience, price, the 
effectiveness of companion diagnostic tests in guiding the use of related therapeutics, the level of generic competition 
and the availability of reimbursement from government and other third-party payors. 

If our drug candidates are approved for the indications for which we are currently conducting or planning 
clinical trials, they will compete with the drugs discussed below and will likely compete with other drugs that are 
currently in development. 

BLU-285 

We are initially developing BLU-285, which is designed to target KIT, including Exon 17 mutations, for 

advanced SM and GIST patients, as well as for patients with GIST with the PDGFRα D842V mutation. 

For advanced SM, the only approved medical therapy is imatinib for patients without the KIT D816V mutation 

or mutational status unknown. Several treatments are used off-label for cytoreduction including interferon-α and 
cytoreductive agents for advanced forms of SM. If BLU-285 receives marketing approval, it may face competition from 
other drug candidates in development for advanced SM, including drug candidates in development from AB 
Science S.A., Deciphera Pharmaceuticals, LLC, Kolltan Pharmaceuticals, Inc., Novartis AG and Plexxikon Inc., a 
wholly-owned subsidiary of Daiichi Sankyo Company, Limited.   

For GIST, the current approved standards of care for unresectable or metastatic patients are first-line imatinib, 

followed by second-line sunitinib upon imatinib progression, followed by third-line regorafenib upon sunitinib 
progression. While these agents do not address patients with the KIT Exon 17 mutation or the PDGFRα D842V 
mutation, they may be competitor therapies if the recommended mutational status testing is not performed. If BLU-285 
receives marketing approval for this indication, it may also face competition from drug candidates in development, 

30 

including by AROG Pharmaceuticals, Inc., ARIAD Pharmaceuticals, Inc., a wholly-owned subsidiary of Takeda 
Pharmaceutical Company Limited, Deciphera Pharmaceuticals, LLC, Kolltan Pharmaceuticals, Inc. and Plexxikon Inc., 
a wholly-owned subsidiary of Daiichi Sankyo Company, Limited.   

BLU-554 

The development of BLU-554 will focus on a subset of patients with HCC with FGF19 overexpression. The 

only approved systemic medical therapy for HCC is sorafenib. In addition, there are potentially competitive drug 
candidates in development, including by AstraZeneca plc, Astellas Pharma, Inc., Bayer AG, Celgene Corporation, 
Eisai Inc., H3 Biomedicine Inc., Incyte Corporation, Johnson & Johnson, Novartis AG, Sanofi S.A., Taiho 
Pharmaceutical Co., Ltd. and Xoma Ltd.   

BLU-667 

The development of BLU-667 will focus on patients with the kinase RET, RET fusions and predicted RET 

resistant mutants. There are no approved medical therapies for RET, but there are several approved multi-kinase 
inhibitors with RET activity being evaluated in clinical trials, including alectinib, apatinib, cabozantinib, dovitinib, 
lenvatinib, ponatinib, sorafenib, sunitinib and vandetinib. In addition, there are potentially competitive drug candidates 
in development, including by Ignyta, Inc., Loxo Oncology, Inc. and Mirati Therapeutics.   

Commercialization Plans 

Our goal is to become a fully-integrated biopharmaceutical company capable of delivering transformative drugs 

to patients. Given our stage of development, we have not yet established our own commercial organization or 
distribution capabilities. Our initial focus is on genomically defined patient populations in oncology allowing us to 
efficiently commercialize our drug candidates in the United States on our own initially and worldwide longer-term. We 
currently own worldwide commercial rights to all of our oncology focused drug candidates. Subject to obtaining 
regulatory approval, we believe that we may be able to commercialize one or more of our drug candidates in as little as 
five years. However, we may never obtain regulatory approval for our drug candidates or be able to develop or 
commercialize a marketable drug. In addition, subject to regulatory approval, we believe we can successfully launch and 
commercialize our initial drug candidates on our own, using a small and highly specialized sales force similar to those of 
other rare disease companies. However, we may establish collaborations with pharmaceutical companies to leverage 
their capabilities to maximize the potential of our drug candidates.   

Under the terms of our agreements related to the development and commercialization of companion diagnostic 
tests, Ventana is responsible for the commercialization of the companion diagnostic test for BLU-554 that we expect to 
use to identify HCC patients with abberantly active FGFR4 signaling as indicated by FGF19 overexpression, and Qiagen 
is responsible for the commercialization of the companion diagnostic test for BLU-285 that we expect to use to identify 
GIST patients with the PDGFRα D842V mutation. 

Manufacturing and Supply 

We do not own or operate, and currently have no plans to establish, any manufacturing facilities. We currently 

rely, and expect to continue to rely, on third parties for the manufacture of our drug candidates for pre-clinical and 
clinical testing, as well as for commercial manufacture of any drugs that we may commercialize. To date, we have 
obtained active pharmaceutical ingredients, or API, and drug substance for BLU-285, BLU-554 and BLU-667 for our 
pre-clinical and Phase 1 testing from one third-party manufacturer and drug product from another third party 
manufacturer. We obtain our supplies from these manufacturers on a purchase order basis and do not have a long-term 
supply arrangement in place. We do not currently have arrangements in place for redundant supply for API, drug product 
or drug substance. For all of our drug candidates, we intend to identify and qualify additional manufacturers to provide 
the API, drug product and drug substance prior to submission of a new drug application to the FDA and/or a marketing 
authorization application to the European Medicines Agency. 

BLU-285, BLU-554 and BLU-667 are compounds of low molecular weight, generally called small molecules. 
They can be manufactured in reliable and reproducible synthetic processes from readily available starting materials. The 
chemistry is amenable to scale-up and does not require unusual equipment in the manufacturing process. We expect to 
continue developing drug candidates that can be produced cost-effectively at contract manufacturing facilities. 

31 

Under the terms of our agreements related to the development and commercialization of companion diagnostic 
tests, we will rely on each of Ventana for the manufacture of the companion diagnostic test for BLU-554 that we expect 
to use to identify HCC patients with abberantly active FGFR4 signaling as indicated by FGF19 overexpression and 
Qiagen for the manufacture of the companion diagnostic test for BLU-285 that we expect to use to identify GIST 
patients with the PDGFRα D842V mutation. We generally expect to rely on third parties for the manufacture of any 
other companion diagnostic tests we may seek to develop. 

Government Regulation   

Government authorities in the United States at the federal, state and local level and in other countries 
extensively regulate, among other things, the research and clinical development, testing, manufacture, quality control, 
approval, labeling, packaging, storage, record-keeping, promotion, advertising, distribution, post-approval monitoring 
and reporting, marketing, and export and import of drug products, such as those we are developing. Generally, before a 
new drug can be marketed, considerable data demonstrating its quality, safety and efficacy must be obtained, organized 
into a format specific to each regulatory authority, submitted for review and approved by the regulatory authority. 

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. Failure to 
comply with the applicable regulatory requirements at any time during the product development process, approval 
process or after approval, may subject an applicant to administrative or judicial sanctions. These sanctions could include, 
among other actions, the regulatory authority’s refusal to approve pending applications, withdrawal of an approval, 
clinical holds, untitled or warning letters, voluntary product recalls or withdrawals from the market, product seizures, 
total or partial suspension of production or distribution injunctions, debarment, fines, refusals of government contracts, 
restitution, disgorgement, or civil or criminal penalties. Any agency or judicial enforcement action could have a material 
adverse effect on us. 

U.S. Drug Development 

In the United States, the FDA regulates drugs under the Federal Food, Drug, and Cosmetic Act, or FDCA, and 

its implementing regulations. Drugs are also subject to other federal, state and local statutes and regulations. Our drug 
candidates must be approved by the FDA through the NDA process before they may be legally marketed in the United 
States. The process required by the FDA before a drug may be marketed in the United States generally involves the 
following: 

• 

• 

• 

• 

• 

• 

• 

completion of extensive non-clinical tests, sometimes referred to as pre-clinical laboratory tests, pre-
clinical animal studies and formulation studies performed in accordance with applicable regulations, 
including the FDA’s GLP regulations; 

submission to the FDA of an IND, which must become effective before human clinical trials may 
begin and must be actively maintained, including by submitting annual reports; 

performance of adequate and well-controlled human clinical trials in accordance with applicable IND 
and other clinical trial-related regulations, sometimes referred to as good clinical practices, or GCPs, to 
establish the safety and efficacy of the proposed drug for its proposed indication; 

submission to the FDA of an NDA for a new drug; 

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

satisfactory completion of an FDA pre-approval inspection of the manufacturing facility or facilities at 
which the API and finished drug product are produced to assess compliance with the FDA’s current 
good manufacturing practice requirements, or cGMP; 

potential FDA audit of the pre-clinical study sites and/or clinical trial sites that generated the data in 
support of the NDA; and 

32 

•  FDA review and approval of the NDA prior to any commercial marketing or sale of the drug in the 

United States. 

The data required to support an NDA is generated in two distinct development stages: pre-clinical and clinical. 

For new chemical entities, the pre-clinical development stage generally involves synthesizing the active component, 
developing the formulation and determining the manufacturing process, as well as carrying out non-human toxicology, 
pharmacology and drug metabolism studies in the laboratory, which support subsequent clinical testing. The conduct of 
the pre-clinical tests must comply with federal regulations, including GLPs. The sponsor must submit the results of the 
pre-clinical tests, together with manufacturing information, analytical data, any available clinical data or literature and a 
proposed clinical protocol, to the FDA as part of the IND. An IND is a request for authorization from the FDA to 
administer an investigational drug product to humans. The central focus of an IND submission is on the pre-clinical data, 
general investigational plan and the protocol(s) for human trials. The IND automatically becomes effective 30 days after 
receipt by the FDA, unless the FDA raises concerns or questions regarding the proposed clinical trials and places the 
IND on clinical hold within that 30-day time period. In such a case, the IND sponsor and the FDA must resolve any 
outstanding concerns or questions before the clinical trial can begin. The FDA may also impose clinical holds on a drug 
candidate at any time before or during clinical trials due to safety concerns or non-compliance. Accordingly, we cannot 
be sure that submission of an IND will result in the FDA allowing clinical trials to begin, or that, once begun, issues will 
not arise that could cause the trial to be suspended or terminated. 

The clinical stage of development involves the administration of the drug candidate to healthy volunteers and/or 

patients under the supervision of qualified investigators, generally physicians not employed by or under the trial 
sponsor’s control, in accordance with GCPs, which include the requirement that all research subjects provide their 
informed consent for their participation in any clinical trial. Clinical trials are conducted under protocols detailing, 
among other things, the objectives of the clinical trial, dosing procedures, subject selection and exclusion criteria, and 
the parameters to be used to monitor subject safety and assess efficacy. Each protocol, and any subsequent amendments 
to the protocol, must be submitted to the FDA as part of the IND. Further, each clinical trial must be reviewed and 
approved by an independent institutional review board, or IRB, at or servicing each institution at which the clinical trial 
will be conducted. An IRB is charged with protecting the welfare and rights of trial participants and considers such items 
as whether the risks to individuals participating in the clinical trials are minimized and are reasonable in relation to 
anticipated benefits. The IRB also approves the informed consent form that must be provided to each clinical trial 
subject or his or her legal representative and must monitor the clinical trial until completed. There are also requirements 
governing the reporting of ongoing clinical trials and completed clinical trial results to public registries. 

Clinical trials are generally conducted in three sequential phases that may overlap or be combined, known as 

Phase 1, Phase 2 and Phase 3 clinical trials. Phase 1 clinical trials for oncology indications generally involve a small 
number of disease-affected patients who are treated with the drug candidate in escalating dose cohorts. The primary 
purpose of these clinical trials is to determine the MTD, or a recommended dose if the MTD is not achieved, assess the 
PK profile, pharmacologic action, side effect tolerability and safety of the drug. Phase 1 clinical trials for oncology 
indications may also evaluate preliminary evidence of clinical activity. Phase 2 clinical trials typically involve studies in 
disease-affected patients to determine the dose required to produce the desired benefits. At the same time, safety and 
further PK and PD information is collected, as well as identification of possible adverse effects and safety risks and 
preliminary evaluation of efficacy. Phase 3 clinical trials generally involve large numbers of patients at multiple sites, in 
multiple countries (from several hundred to several thousand subjects) and are designed to provide the data necessary to 
demonstrate the efficacy of the drug for its intended use, its safety in use, and to establish the overall benefit/risk 
relationship of the drug and provide an adequate basis for drug approval. Phase 3 clinical trials may include comparisons 
with placebo and/or other comparator treatments. The duration of treatment is often extended to mimic the actual use of 
a drug during marketing. Generally, two adequate and well-controlled Phase 3 clinical trials are required by the FDA for 
approval of an NDA. 

Post-approval trials, sometimes referred to as Phase 4 clinical trials, may be conducted after initial marketing 
approval. These trials are used to gain additional experience from the treatment of patients in the intended therapeutic 
indication. In certain instances, FDA may mandate the performance of Phase 4 clinical trials. 

Progress reports detailing the results of the clinical trials must be submitted at least annually to the FDA and 

written IND safety reports must be submitted to the FDA and the investigators for serious and unexpected adverse 
reactions, any finding from other clinical studies, tests in laboratory animals, or in vitro testing that suggests a significant 
risk for human subjects, or any clinically important increase in the rate of a serious suspected adverse reaction over that 

33 

listed in the protocol or investigator brochure. Phase 1, Phase 2 and Phase 3 clinical trials may not be completed 
successfully within any specified period, if at all. The FDA or the clinical trial sponsor may suspend or terminate 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. In addition, some clinical trials are overseen by an independent group of 
qualified experts organized by the clinical trial sponsor, known as a data safety monitoring board or committee. This 
group provides authorization for whether or not a trial may move forward at designated check points based on access to 
certain data from the trial. We may also suspend or terminate a clinical trial based on evolving business objectives and/or 
competitive climate. 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 as well as finalize a process 
for manufacturing the drug in commercial quantities in accordance with cGMP requirements. The manufacturing process 
must be capable of consistently producing quality batches of the drug candidate and, among other things, cGMPs impose 
extensive procedural, substantive and recordkeeping requirements to ensure and preserve the long term stability and 
quality of the final drug product. In addition, appropriate packaging must be selected and tested and stability studies 
must be conducted to demonstrate that the drug candidate does not undergo unacceptable deterioration over its shelf life. 

NDA and FDA Review Process 

Following trial completion, trial data are analyzed to assess safety and efficacy. The results of pre-clinical 

studies and clinical trials are then submitted to the FDA as part of an NDA, along with proposed labeling for the drug 
and information about the manufacturing process and facilities that will be used to ensure drug quality, results of 
analytical testing conducted on the chemistry of the drug, and other relevant information. The NDA is a request for 
approval to market the drug and must contain adequate evidence of safety and efficacy, which is demonstrated by 
extensive pre-clinical and clinical testing. The application includes both negative or ambiguous results of pre-clinical 
studies and clinical trials as well as positive findings. Data may come from company-sponsored clinical trials intended to 
test the safety and efficacy of a use of a drug, or from a number of alternative sources, including studies initiated by 
investigators. To support marketing approval, the data submitted must be sufficient in quality and quantity to establish 
the safety and efficacy of the investigational drug product to the satisfaction of the FDA. 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. FDA approval of an NDA must be obtained before a drug may be offered for sale in the United States. 

In addition, under the Pediatric Research Equity Act, or PREA, an NDA or supplement to an NDA must contain 

data to assess the safety and efficacy of the drug for the claimed indications in all relevant pediatric subpopulations and 
to support dosing and administration for each pediatric subpopulation for which the drug is safe and effective. The FDA 
may grant deferrals for submission of data or full or partial waivers. 

Under the Prescription Drug User Fee Act, or PDUFA, as amended, each NDA must be accompanied by a user 

fee. The FDA adjusts the PDUFA user fees on an annual basis. According to the FDA’s fiscal year 2017 fee schedule, 
effective through September 30, 2017, the user fee for an application requiring clinical data, such as an NDA, is 
$2,038,100. PDUFA also imposes an annual product fee for human drugs ($97,750) and an annual establishment fee 
($512,000) on facilities used to manufacture prescription drugs. Fee waivers or reductions are available in certain 
circumstances, including a waiver of the application fee for the first application filed by a small business. In addition, no 
user fees are assessed on NDAs for products designated as orphan drugs, unless the product also includes a non-orphan 
indication. 

The FDA reviews all NDAs submitted before it accepts them for filing and may request additional information 
rather than accepting an NDA for filing. The FDA must make a decision on accepting an NDA for filing within 60 days 
of receipt. Once the submission is accepted for filing, the FDA begins an in-depth review of the NDA. Under the goals 
and policies agreed to by the FDA under PDUFA, the FDA has ten months from the filing date in which to complete its 
initial review of a standard NDA and respond to the applicant, and six months from the filing date for a priority NDA. 
The FDA does not always meet its PDUFA goal dates for standard and priority NDAs, and the review process is often 
significantly extended by FDA requests for additional information or clarification. 

After the NDA submission is accepted for filing, the FDA reviews the NDA to determine, among other things, 

whether the proposed drug is safe and effective for its intended use, and whether the drug is being manufactured in 
accordance with cGMP to assure and preserve the drug’s identity, strength, quality and purity. The FDA may refer 

34 

applications for novel drugs or drug candidates that present difficult questions of safety or efficacy to an advisory 
committee, typically a panel that includes clinicians and other experts, for review, evaluation and 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. 
The FDA will likely re-analyze the clinical trial data, which could result in extensive discussions between the FDA and 
us during the review process. The review and evaluation of an NDA by the FDA is extensive and time consuming and 
may take longer than originally planned to complete, and we may not receive a timely approval, if at all. 

Before approving an NDA, the FDA will conduct a pre-approval inspection of the manufacturing facilities for 
the new drug to determine whether they comply with cGMPs. The FDA will not approve the drug unless it determines 
that the manufacturing processes and facilities are in compliance with cGMP requirements and adequate to assure 
consistent production of the drug within required specifications. In addition, before approving an NDA, the FDA may 
also audit data from clinical trials by inspecting the sponsor or clinical trial sites to ensure compliance with GCP 
requirements. After the FDA evaluates the application, manufacturing process and manufacturing facilities where the 
drug product and/or its API will be produced, it may issue an approval letter or a Complete Response Letter. An 
approval letter authorizes commercial marketing of the drug with specific prescribing information for specific 
indications. A Complete Response Letter indicates that the review cycle of the application is complete and the 
application is not ready for approval. A Complete Response Letter usually describes all of the specific deficiencies in the 
NDA identified by the FDA. The Complete Response Letter may require additional clinical data and/or an additional 
pivotal clinical trial(s), and/or other significant, expensive and time-consuming requirements related to clinical trials, 
pre-clinical studies or manufacturing. If a Complete Response Letter is issued, the applicant may either resubmit the 
NDA, addressing all of the deficiencies identified in the letter, or withdraw the application. Even if such data and 
information is submitted, the FDA may ultimately decide that the NDA does not satisfy the criteria for approval. Data 
obtained from clinical trials are not always conclusive and the FDA may interpret data differently than we interpret the 
same data. 

There is no assurance that the FDA will ultimately approve a drug product for marketing in the United States 

and we may encounter significant difficulties or costs during the review process. If a drug receives marketing approval, 
the approval may be significantly limited to specific diseases and dosages or the indications for use may otherwise be 
limited, which could restrict the commercial value of the drug. Further, the FDA may require that certain 
contraindications, warnings or precautions be included in the drug labeling or may condition the approval of the NDA on 
other changes to the proposed labeling, development of adequate controls and specifications, or a commitment to 
conduct post-market testing or clinical trials and surveillance to monitor the effects of approved drugs. For example, the 
FDA may require Phase 4 testing which involves clinical trials designed to further assess a drug’s safety and 
effectiveness and may require testing and surveillance programs to monitor the safety of approved drugs that have been 
commercialized. The FDA may also place other conditions on approvals including the requirement for a Risk Evaluation 
and Mitigation Strategy, or REMS to assure the safe use of the drug. If the FDA concludes a REMS is needed, the 
sponsor of the NDA must submit a proposed REMS. The FDA will not approve the NDA without an approved REMS, if 
required. A REMS 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. Any of these limitations on 
approval or marketing could restrict the commercial promotion, distribution, prescription or dispensing of drugs. Drug 
approvals may be withdrawn for non-compliance with regulatory requirements or if problems occur following initial 
marketing. 

Special FDA Expedited Review and Approval Programs 

The FDA has various programs, including fast track designation, accelerated approval, priority review and 

breakthrough therapy designation, that are intended to expedite or simplify the process for the development and FDA 
review of drugs that are intended for the treatment of serious or life threatening diseases or conditions and demonstrate 
the potential to address unmet medical needs. The purpose of these programs is to provide important new drugs to 
patients earlier than under standard FDA review procedures. To be eligible for fast track designation, the FDA must 
determine, based on the request of a sponsor, that a drug is intended to treat a serious or life threatening disease or 
condition and based on pre-clinical or preliminary clinical data demonstrates the potential to address an unmet medical 
need. The FDA will determine that a product will fill an unmet medical need if it will provide a therapy where none 
exists or provide a therapy that may be potentially superior to existing therapy based on efficacy or safety factors. 

The FDA may give a priority review designation to drugs that offer major advances in treatment, or provide a 
treatment where no adequate therapy exists. A priority review means that the goal for the FDA to review an application 

35 

is six months, rather than the standard review of ten months under current PDUFA guidelines. These six and ten month 
review periods are measured from the “filing” date rather than the receipt date for NDAs for new molecular entities, 
which typically adds approximately two months to the timeline for review and decision from the date of submission. 
Products that are eligible for fast track designation are also likely to be considered appropriate to receive a priority 
review. 

In addition, drugs studied for their safety and effectiveness in treating serious or life-threatening illnesses and 

that provide meaningful therapeutic benefit over existing treatments may receive accelerated approval and may be 
approved on the basis of adequate and well-controlled clinical trials establishing that the drug 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 approval, the FDA may require a sponsor of a drug 
receiving accelerated approval to perform post-marketing studies to verify and describe the predicted effect on 
irreversible morbidity or mortality or other clinical endpoint, and the drug may be subject to accelerated withdrawal 
procedures. 

Moreover, under the provisions of the Food and Drug Administration Safety and Innovation Act, or FDASIA, 
enacted in 2012, a sponsor can request designation of a product candidate as a “breakthrough therapy.” A breakthrough 
therapy is defined as a drug 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 the drug may demonstrate 
substantial improvement over existing therapies on one or more clinically significant endpoints, such as substantial 
treatment effects observed early in clinical development. Drugs designated as breakthrough therapies are also eligible for 
accelerated approval and priority review. The FDA must take certain actions, such as holding timely meetings and 
providing advice, intended to expedite the development and review of an application for approval of a breakthrough 
therapy. 

Even if a product 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. Furthermore, fast track designation, priority review, accelerated approval and breakthrough therapy 
designation, do not change the standards for approval and may not ultimately expedite the development or approval 
process. 

Pediatric Trials 

Pursuant to FDASIA, a sponsor who is planning to submit a marketing application for a drug that includes a 

new active ingredient, new indication, new dosage form, new dosing regimen or new route of administration must 
submit an initial Pediatric Study Plan, or PSP, within sixty days of an end-of-Phase 2 meeting or as may be agreed 
between the sponsor and FDA. The initial PSP must include an outline of the pediatric study or studies that the sponsor 
plans to conduct, including study objectives and design, age groups, relevant endpoints and statistical approach, or a 
justification for not including such detailed information, and any request for a deferral of pediatric assessments or a full 
or partial waiver of the requirement to provide data from pediatric studies along with supporting information. 
Development program candidates designated as orphan drugs are exempt from the above requirements. FDA and the 
sponsor must reach agreement on the PSP. A sponsor can submit amendments to an agreed-upon initial PSP at any time 
if changes to the pediatric plan need to be considered based on data collected from pre-clinical studies, early phase 
clinical trials, and/or other clinical development programs. 

Post-Marketing Requirements 

Following approval of a new drug, a pharmaceutical company and the approved drug are subject to continuing 

regulation by the FDA, including, among other things, monitoring and recordkeeping activities, reporting to the 
applicable regulatory authorities of adverse experiences with the drug, providing the regulatory authorities with updated 
safety and efficacy information, drug sampling and distribution requirements, and complying with promotion and 
advertising requirements, which include, among others, standards for direct-to-consumer advertising, restrictions on 
promoting drugs for uses or in patient populations that are not described in the drug’s approved labeling (known as 
“off-label use”), limitations on industry-sponsored scientific and educational activities, and requirements for promotional 
activities involving the internet. Although physicians may prescribe legally available drugs for off-label uses, 

36 

manufacturers may not market or promote such off-label uses. Modifications or enhancements to the drug or its labeling 
or changes of the site of manufacture are often subject to the approval of the FDA and other regulators, which may or 
may not be received or may result in a lengthy review process. 

Prescription drug advertising is subject to federal, state and foreign regulations. In the United States, the FDA 

regulates prescription drug promotion, including direct-to-consumer advertising. Prescription drug promotional materials 
must be submitted to the FDA in conjunction with their first use. Any distribution of prescription drugs and 
pharmaceutical samples must comply with the U.S. Prescription Drug Marketing Act, or the PDMA, a part of the FDCA. 

In the United States, once a drug is approved, its manufacture is subject to comprehensive and continuing 

regulation by the FDA. The FDA regulations require that drugs be manufactured in specific approved facilities and in 
accordance with cGMP. We rely, and expect to continue to rely, on third parties for the production of clinical and 
commercial quantities of our drugs in accordance with cGMP regulations. cGMP regulations require among other things, 
quality control and quality assurance as well as the corresponding maintenance of records and documentation and the 
obligation to investigate and correct any deviations from cGMP. Drug manufacturers and other entities involved in the 
manufacture and distribution of approved drugs 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 and other laws. Accordingly, manufacturers must continue to expend time, money, and effort in 
the area of production and quality control to maintain cGMP compliance. These regulations also impose certain 
organizational, procedural and documentation requirements with respect to manufacturing and quality assurance 
activities. NDA holders using contract manufacturers, laboratories or packagers are responsible for the selection and 
monitoring of qualified firms, and, in certain circumstances, qualified suppliers to these firms. These firms and, where 
applicable, their suppliers are subject to inspections by the FDA at any time, and the discovery of violative conditions, 
including failure to conform to cGMP, could result in enforcement actions that interrupt the operation of any such 
facilities or the ability to distribute drugs manufactured, processed or tested by them. Discovery of problems with a drug 
after approval may result in restrictions on a drug, manufacturer, or holder of an approved NDA, including, among other 
things, recall or withdrawal of the drug from the market, and may require substantial resources to correct. 

The FDA also may require post-approval testing, sometimes referred to as Phase 4 testing, risk minimization 

action plans and post-marketing surveillance to monitor the effects of an approved drug or place conditions on an 
approval that could restrict the distribution or use of the drug. Discovery of previously unknown problems with a drug or 
the failure to comply with applicable FDA requirements can have negative consequences, including adverse publicity, 
judicial or administrative enforcement, untitled or warning letters from the FDA, mandated corrective advertising or 
communications with doctors, and civil or criminal penalties, among others. Newly discovered or developed safety or 
effectiveness data may require changes to a drug’s approved labeling, including the addition of new warnings and 
contraindications, and also may require the implementation of other risk management measures. Also, new government 
requirements, including those resulting from new legislation, may be established, or the FDA’s policies may change, 
which could delay or prevent regulatory approval of our drugs under development. 

Other Regulatory Matters 

Manufacturing, sales, promotion and other activities following drug approval are also subject to regulation by 

numerous regulatory authorities in addition to the FDA, including, in the United States, the Centers for Medicare & 
Medicaid Services, other divisions of the Department of Health and Human Services, the Drug Enforcement 
Administration for controlled substances, the Consumer Product Safety Commission, the Federal Trade Commission, the 
Occupational Safety & Health Administration, the Environmental Protection Agency and state and local governments. In 
the United States, sales, marketing and scientific/educational programs must also comply with state and federal fraud 
and abuse laws. Pricing and rebate programs must comply with the Medicaid rebate requirements of the U.S. Omnibus 
Budget Reconciliation Act of 1990 and more recent requirements in the Patient Protection and Affordable Care Act as 
amended by the Health Care and Education Reconciliation Act of 2010, or collectively, the Affordable Care Act. If 
drugs are made available to authorized users of the Federal Supply Schedule of the General Services Administration, 
additional laws and requirements apply. The handling of any controlled substances must comply with the U.S. 
Controlled Substances Act and Controlled Substances Import and Export Act. Drugs must meet applicable child-resistant 
packaging requirements under the U.S. Poison Prevention Packaging Act. Manufacturing, sales, promotion and other 
activities are also potentially subject to federal and state consumer protection and unfair competition laws. 

37 

The distribution of pharmaceutical drugs is subject to additional requirements and regulations, including 

extensive record-keeping, licensing, storage and security requirements intended to prevent the unauthorized sale of 
pharmaceutical drugs. 

The failure to comply with regulatory requirements subjects firms to possible legal or regulatory action. 

Depending on the circumstances, failure to meet applicable regulatory requirements can result in criminal prosecution, 
fines or other penalties, injunctions, voluntary recalls, seizure of drugs, total or partial suspension of production, denial 
or withdrawal of product approvals, or refusal to allow a firm to enter into supply contracts, including government 
contracts. In addition, even if a firm complies with FDA and other requirements, new information regarding the safety or 
efficacy of a product could lead the FDA to modify or withdraw product approval. Prohibitions or restrictions on sales or 
withdrawal of future products marketed by us could materially affect our business in an adverse way. 

Changes in regulations, statutes or the interpretation of existing regulations could impact our business in the 

future by requiring, for example: (i) changes to our manufacturing arrangements; (ii) additions or modifications to 
product labeling; (iii) the voluntary recall or discontinuation of our products; or (iv) additional record-keeping 
requirements. If any such changes were to be imposed, they could adversely affect the operation of our business. 

U.S. Patent Term Restoration and Marketing Exclusivity 

Depending upon the timing, duration and specifics of the FDA approval of our drug candidates, some of our 

U.S. patents may be eligible for limited patent term extension under the Drug Price Competition and Patent Term 
Restoration Act of 1984, commonly referred to as the Hatch-Waxman Amendments. The Hatch-Waxman Amendments 
permit a patent restoration term of up to five years as compensation for patent term lost during product development and 
the FDA regulatory review process. However, patent term restoration cannot extend the remaining term of a patent 
beyond a total of 14 years from the product’s approval date. The patent term restoration period is generally one-half the 
time between the effective date of an IND and the submission date of an NDA plus the time between the submission date 
of an NDA and the approval of that application. Only one patent applicable to an approved drug is eligible for the 
extension and the application for the extension must be submitted prior to the expiration of the patent. The USPTO, in 
consultation with the FDA, reviews and approves the application for any patent term extension or restoration. In the 
future, we intend to apply for restoration of patent term for one of our currently owned or licensed patents to add patent 
life beyond its current expiration date, depending on the expected length of the clinical trials and other factors involved 
in the filing of the relevant NDA. 

Marketing exclusivity provisions under the FDCA can also 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 accept for review 
an abbreviated new drug application, or ANDA, or a 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 
innovator 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 
also 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 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 all of the pre-clinical studies and adequate and well-controlled clinical trials necessary to demonstrate safety 
and effectiveness. Orphan drug exclusivity, as described below, may offer a seven-year period of marketing exclusivity, 
except in certain circumstances. Pediatric exclusivity is another type of regulatory market exclusivity in the United 
States. Pediatric exclusivity, if granted, adds six months to existing exclusivity periods and patent terms. This six-month 
exclusivity, which runs from the end of other exclusivity protection or patent term, may be granted based on the 
voluntary completion of a pediatric trial in accordance with an FDA-issued “Written Request” for such a trial. 

38 

Orphan Drug Designation 

The FDA may grant orphan drug designation to drugs intended to treat a rare disease or condition that affects 
fewer than 200,000 individuals in the United States, or if it affects more than 200,000 individuals in the United States, 
there is no reasonable expectation that the cost of developing and marketing the drug for this type of disease or condition 
will be recovered from sales in the United States. In the European Union, the European Commission, after receiving the 
opinion of the EMA’s Committee for Orphan Medicinal Products, or COMP, grants orphan drug designation to promote 
the development of products that are intended for the diagnosis, prevention or treatment of a life-threatening or 
chronically debilitating conditions affecting not more than five in 10,000 persons in the European Union Community. In 
addition, designation is granted for products intended for the diagnosis, prevention or treatment of a life-threatening, 
seriously debilitating or serious and chronic condition and when, without incentives, it is unlikely that sales of the drug 
in the European Union would be sufficient to justify the necessary investment in developing the drug or biological 
product. 

In the United States, orphan drug designation entitles a party to financial incentives such as opportunities for 

grant funding towards clinical trial costs, tax advantages and user-fee waivers. In addition, if a product receives the first 
FDA approval for the indication for which it has orphan designation, the product is entitled to orphan drug exclusivity, 
which means the FDA may not approve any other application to market the same drug for the same indication for a 
period of seven years, except in limited circumstances, such as a showing of clinical superiority over the product with 
orphan exclusivity. 

In the European Union, orphan drug designation also entitles a party to financial incentives such as reduction of 

fees or fee waivers and ten years of market exclusivity is granted following drug or biological product approval. This 
period may be reduced to six years if the orphan drug designation criteria are no longer met, including where it is shown 
that the product is sufficiently profitable not to justify maintenance of market exclusivity. 

Orphan drug designation must be requested before submitting an application for marketing approval. Orphan 

drug designation does not convey any advantage in, or shorten the duration of, the regulatory review and approval 
process. 

Regulation of Diagnostic Tests 

We expect that our drug candidates may require use of a diagnostic to identify appropriate patient populations 
for our products. These diagnostics, often referred to as companion diagnostic tests, are medical devices, often in vitro 
devices, which provide information that is essential for the safe and effective use of a corresponding drug. For example, 
we have entered into agreements with Ventana to develop and commercialize a companion diagnostic test for BLU-554 
that we expect to use to identify HCC patients with abberantly active FGFR4 signaling as indicated by FGF19 
overexpression and Qiagen to develop and commercialize a companion diagnostic test for BLU-285 that we expect to 
use to identify GIST patients with the PDGFRα D842V mutation. 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, pre-clinical 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. We expect that any companion 
diagnostic test developed for our drug candidates will utilize the PMA pathway. 

PMA applications must be supported by valid scientific evidence, which typically requires extensive data, 

including technical, pre-clinical, clinical and manufacturing data, to demonstrate to the FDA’s satisfaction the safety and 
effectiveness of the device. For diagnostic tests, a PMA application typically includes data regarding analytical and 
clinical validation studies. As part of its review of the PMA, the FDA will conduct a pre-approval inspection of the 
manufacturing facility or facilities to ensure compliance with the Quality System Regulation, or QSR, which requires 
manufacturers to follow design, testing, control, documentation and other quality assurance procedures. FDA review of 
an initial PMA may require several years to complete. If the FDA evaluations of both the PMA application and the 
manufacturing facilities are favorable, the FDA will either issue an approval letter or an approvable letter, which usually 
contains a number of conditions that must be met in order to secure the 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 

39 

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. Once granted, PMA approval may be withdrawn by the FDA 
if compliance with post approval requirements, conditions of approval or other regulatory standards is not maintained or 
problems are identified following initial marketing. 

On August 6, 2014, the FDA issued a final guidance document addressing the development and approval 

process for “In Vitro Companion Diagnostic Devices.” According to the guidance, for novel drugs such as our drug 
candidates, a companion diagnostic test device and its corresponding drug should be approved or cleared 
contemporaneously by FDA for the use indicated in the therapeutic product labeling. The guidance also explains that a 
companion diagnostic test device used to make treatment decisions in clinical trials of a drug generally will be 
considered an investigational device, unless it is employed for an intended use for which the device is already approved 
or cleared. If used to make critical treatment decisions, such as patient selection, the diagnostic device generally will be 
considered a significant risk device under the FDA’s Investigational Device Exemption, or IDE, regulations. Thus, the 
sponsor of the diagnostic device will be required to comply with the IDE regulations. According to the guidance, if a 
diagnostic device and a drug are to be studied together to support their respective approvals, both products can be 
studied in the same investigational study, if the study meets both the requirements of the IDE regulations and the IND 
regulations. The guidance provides that depending on the details of the study plan and subjects, a sponsor may seek to 
submit an IND alone, or both an IND and an IDE. 

In the EEA, in vitro medical devices are required to conform with the essential requirements of the E.U. 
Directive on in vitro diagnostic medical devices (Directive No 98/79/EC, as amended). To demonstrate compliance with 
the essential requirements, the manufacturer must undergo a conformity assessment procedure. The conformity 
assessment varies according to the type of medical device and its classification. For low-risk devices, the conformity 
assessment can be carried out internally, but for higher risk devices it requires the intervention of an accredited EEA 
Notified Body. If successful, the conformity assessment concludes with the drawing up by the manufacturer of an EC 
Declaration of Conformity entitling the manufacturer to affix the CE mark to its products and to sell them throughout the 
EEA. 

European Drug Development 

In the European Union, our future drugs may also be subject to extensive regulatory requirements. As in the 

United States, medicinal products can only be marketed if a marketing authorization from the competent regulatory 
agencies has been obtained. 

Similar to the United States, the various phases of pre-clinical and clinical research in the European Union are 

subject to significant regulatory controls. Although the current EU Clinical Trials Directive 2001/20/EC, or Clinical 
Trials Directive, has sought to harmonize the European Union clinical trials regulatory framework, setting out common 
rules for the control and authorization of clinical trials in the European Union, the European Union Member States have 
transposed and applied the provisions of the Directive differently. This has led to significant variations in the member 
state regimes. Under the current regime, before a clinical trial can be initiated it must be approved in each of the 
European Union countries where the trial is to be conducted by two distinct bodies: the National Competent Authority, 
or NCA, and one or more Ethics Committees, or ECs. Under the current regime all suspected unexpected serious adverse 
reactions to the investigated drug that occur during the clinical trial have to be reported to the NCA and ECs of the 
Member State where they occurred. 

In April 2014, the European Union adopted a new Clinical Trials Regulation (EU) No 536/2014, or the Clinical 

Trials Regulation, which is set to replace the Clinical Trials Directive. It is expected that the new Clinical Trials 
Regulation will apply by October 2018. The Clinical Trials Regulation will overhaul the current system of approvals for 
clinical trials in the European Union. Specifically, the new legislation, which will be directly applicable in all member 
states, aims at simplifying and streamlining the approval of clinical trials in the European Union. For instance, the new 
Clinical Trials Regulation provides for a streamlined application procedure via a single entry point and strictly defined 
deadlines for the assessment of clinical trial applications. 

40 

European Drug Review and Approval 

In the European Economic Area, or EEA, (which is comprised of the 28 Member States of the European Union 

plus Norway, Iceland and Liechtenstein), medicinal products can only be commercialized after obtaining a Marketing 
Authorization, or MA. There are two types of marketing authorizations: 

The Community MA, which is issued by the European Commission through the Centralized Procedure, based 

on the opinion of the Committee for Medicinal Products for Human Use, or CHMP, of the EMA and which is valid 
throughout the entire territory of the EEA. The Centralized Procedure is mandatory for certain types of drugs, such as 
biotechnology medicinal drugs, orphan medicinal drugs, and medicinal drugs containing a new active substance 
indicated for the treatment of AIDS, cancer, neurodegenerative disorders, diabetes, auto-immune and viral diseases. The 
Centralized Procedure is optional for drugs containing a new active substance not yet authorized in the EEA, or for drugs 
that constitute a significant therapeutic, scientific or technical innovation or which are in the interest of public health in 
the European Union. 

National MAs, which are issued by the competent authorities of the Member States of the EEA and only cover 

their respective territory, are available for drugs not falling within the mandatory scope of the Centralized Procedure. 
Where a drug has already been authorized for marketing in a Member State of the EEA, this National MA can be 
recognized in another Member State through the Mutual Recognition Procedure. If the drug 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, or RMS. The competent authority of the RMS prepares a draft assessment report, a draft 
summary of the drug characteristics, or SPC, and a draft of the labeling and package leaflet, which are sent to the other 
Member States (referred to as the Member States Concerned) for their approval. If the Member States Concerned raise 
no objections, based on a potential serious risk to public health, to the assessment, SPC, labeling, or packaging proposed 
by the RMS, the drug is subsequently granted a national MA in all the Member States (i.e. in the RMS and the Member 
States Concerned). 

Under the above described procedures, before granting the MA, the EMA or the competent authorities of the 
Member States of the EEA make an assessment of the risk-benefit balance of the drug on the basis of scientific criteria 
concerning its quality, safety and efficacy. 

European Chemical Entity Exclusivity 

In the European Union, new chemical entities, sometimes referred to as new active substances, qualify for eight 

years of data exclusivity upon marketing authorization and an additional two years of market exclusivity. This data 
exclusivity, if granted, prevents regulatory authorities in the European Union from referencing the innovator’s data to 
assess a generic application for eight years, after which generic marketing authorization can be submitted, and the 
innovator’s data may be referenced, but not approved for two years. The overall ten-year period will be extended to a 
maximum of 11 years if, during the first eight years of those ten years, the marketing authorization 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. 

Rest of the World Regulation 

For other countries outside of the European Union and the United States, such as countries in Eastern Europe, 

Latin America or Asia, the requirements governing the conduct of clinical trials, drug licensing, pricing and 
reimbursement vary from country to country. In all cases the clinical trials must be conducted in accordance with GCP 
requirements and the applicable regulatory requirements and the ethical principles that have their origin in the 
Declaration of Helsinki. 

If we fail to comply with applicable foreign regulatory requirements, we may be subject to, among other things, 

fines, suspension or withdrawal of regulatory approvals, product recalls, seizure of products, operating restrictions and 
criminal prosecution. 

41 

Coverage and Reimbursement 

Sales of our drugs will depend, in part, on the extent to which our drugs will be covered by third-party payors, 

such as government health programs, commercial insurance and managed healthcare organizations. These third-party 
payors are increasingly reducing reimbursements for medical drugs and services. In addition, the containment of 
healthcare costs has become a priority of federal and state governments, and the prices of drugs have been a focus in this 
effort. The U.S. government, state legislatures and foreign governments have shown significant interest in implementing 
cost-containment programs, including price controls, restrictions on reimbursement and requirements for substitution of 
generic drugs. Adoption of price controls and cost-containment measures, and adoption of more restrictive policies in 
jurisdictions with existing controls and measures, could further limit our net revenue and results. Decreases in third-party 
reimbursement for our drug candidates, if approved, or a decision by a third-party payor to not cover our drug candidates 
could reduce physician usage of such drugs and have a material adverse effect on our sales, results of operations and 
financial condition. 

The Medicare Prescription Drug, Improvement, and Modernization Act of 2003, or the MMA, established the 

Medicare Part D program to provide a voluntary prescription drug benefit to Medicare beneficiaries. Under Part D, 
Medicare beneficiaries may enroll in prescription drug plans offered by private entities that provide coverage of 
outpatient prescription drugs. Unlike Medicare Part A and B, Part D coverage is not standardized. Part D prescription 
drug plan sponsors are not required to pay for all covered Part D drugs, and each drug plan can develop its own drug 
formulary that identifies which drugs it will cover and at what tier or level. However, Part D prescription drug 
formularies must include drugs within each therapeutic category and class of covered Part D drugs, though not 
necessarily all the drugs in each category or class. Any formulary used by a Part D prescription drug plan must be 
developed and reviewed by a pharmacy and therapeutic committee. Government payment for some of the costs of 
prescription drugs may increase demand for drugs for which we receive marketing approval. However, any negotiated 
prices for our drugs covered by a Part D prescription drug plan will likely be lower than the prices we might otherwise 
obtain. Moreover, while the MMA applies only to drug benefits for Medicare beneficiaries, private payors often follow 
Medicare coverage policy and payment limitations in setting their own payment rates. Any reduction in payment that 
results from the MMA may result in a similar reduction in payments from non-governmental payors. 

The American Recovery and Reinvestment Act of 2009 provides funding for the federal government to 

compare the effectiveness of different treatments for the same illness. The plan for the research was published in 2012 
by the Department of Health and Human Services, the Agency for Healthcare Research and Quality and the National 
Institutes for Health, and periodic reports on the status of the research and related expenditures will be made to 
Congress. Although the results of the comparative effectiveness studies are not intended to mandate coverage policies 
for public or private payors, it is not clear what effect, if any, the research will have on the sales of our drug candidates, 
if any such drug or the condition that they are intended to treat is the subject of a trial. It is also possible that comparative 
effectiveness research demonstrating benefits in a competitor’s drug could adversely affect the sales of our drug 
candidate. If third-party payors do not consider our drugs to be cost-effective compared to other available therapies, they 
may not cover our drugs after approval as a benefit under their plans or, if they do, the level of payment may not be 
sufficient to allow us to sell our drugs on a profitable basis. 

The Patient Protection and Affordable Care Act, as amended by the Health Care and Education Reconciliation 
Act of 2010, or collectively the Affordable Care Act, enacted in March 2010, has had a significant impact on the health 
care industry. The Affordable Care Act expanded coverage for the uninsured while at the same time containing overall 
healthcare costs. With regard to pharmaceutical products, the Affordable Care Act, among other things, addressed a new 
methodology by which rebates owed by manufacturers under the Medicaid Drug Rebate Program are calculated for 
drugs that are inhaled, infused, instilled, implanted or injected, increased the minimum Medicaid rebates owed by 
manufacturers under the Medicaid Drug Rebate Program and extended the rebate program to individuals enrolled in 
Medicaid managed care organizations, established annual fees and taxes on manufacturers of certain branded 
prescription drugs, and a new Medicare Part D coverage gap discount program, in which manufacturers must agree to 
offer 50% point-of-sale discounts off negotiated prices of applicable brand drugs to eligible beneficiaries during their 
coverage gap period, as a condition for the manufacturer’s outpatient drugs to be covered under Medicare Part D.   

In addition, other legislative changes have been proposed and adopted in the United States since the Affordable 

Care Act was enacted. On August 2, 2011, the Budget Control Act of 2011 among other things, created measures for 
spending reductions by Congress. A Joint Select Committee on Deficit Reduction, tasked with recommending a targeted 
deficit reduction of at least $1.2 trillion for the years 2013 through 2021, was unable to reach required goals, thereby 

42 

triggering the legislation’s automatic reduction to several government programs. This includes aggregate reductions to 
Medicare payments to providers of up to 2% per fiscal year, started in April 2013, and, due to subsequent legislative 
amendments, will stay in effect through 2025 unless additional Congressional action is taken. On January 2, 2013, then 
President Obama signed into law the American Taxpayer Relief Act of 2012, or the ATRA, which among other things, 
also 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. We expect that additional 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 drugs and services, and in turn could 
significantly reduce the projected value of certain development projects and reduce our profitability. In January 2017, 
Congress voted to adopt a budget resolution for fiscal year 2017, that while not a law, is widely viewed as the first step 
toward the passage of legislation that would repeal certain aspects of the Affordable Care Act. Further, on January 20, 
2017, U.S. President Donald Trump signed an Executive Order directing federal agencies with authorities and 
responsibilities under the Affordable Care Act to waive, defer, grant exemptions from, or delay the implementation of 
any provision of the Affordable Care Act that would impose a fiscal burden on states or a cost, fee, tax, penalty or 
regulatory burden on individuals, healthcare providers, health insurers, or manufacturers of pharmaceuticals or medical 
devices. Congress also could consider subsequent legislation to replace elements of the Affordable Care Act that are 
repealed. Thus, in light of the stated policies of the new U.S. presidential administration, there is uncertainty with respect 
to the impact, if any, on the provisions of the Affordable Care Act affecting us. While any legislative and regulatory 
changes will likely take time to develop, and may or may not have an impact on the regulatory regime to which we are 
subject, we cannot predict the ultimate content, timing or effect of any healthcare reform legislation or the impact of 
potential legislation on us. 

In addition, in some foreign countries, the proposed pricing for a drug must be approved before it may be 

lawfully marketed. The requirements governing drug pricing vary widely from country to country. For example, the 
European Union provides options for its member states to restrict the range of medicinal drugs for which their national 
health insurance systems provide reimbursement and to control the prices of medicinal drugs for human use. A member 
state may approve a specific price for the medicinal drug or it may instead adopt a system of direct or indirect controls 
on the profitability of the company placing the medicinal drug on the market. There can be no assurance that any country 
that has price controls or reimbursement limitations for pharmaceutical drugs will allow favorable reimbursement and 
pricing arrangements for any of our drugs. Historically, drugs launched in the European Union do not follow price 
structures of the United States and generally tend to be significantly lower. 

Other Healthcare Laws 

We may also be subject to healthcare regulation and enforcement by the federal government and the states and 
foreign governments where we may market our product candidates, if approved. These laws include, without limitation, 
state and federal anti-kickback, fraud and abuse, false claims, privacy and security and physician sunshine laws and 
regulations. 

The federal Anti-Kickback Statute prohibits, among other things, any person from knowingly and willfully 

offering, soliciting, receiving or paying 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. A person or entity 
does not need to have actual knowledge of the statute or specific intent to violate it in order to have committed a 
violation. 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. 
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. 

In addition, 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. 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 throughout the U.S., for example, in connection with the promotion of 

43 

products for unapproved uses and other sales and marketing practices. The government has obtained multi-million and 
multi-billion dollar settlements under the False Claims Act in addition to individual criminal convictions under 
applicable criminal statutes. Given the significant size of actual and potential settlements, it is expected 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, also created new federal 

criminal statutes that prohibit among other actions, knowingly and willfully executing, or attempting to execute, a 
scheme to defraud any healthcare benefit program, including private third-party payors, knowingly and willfully 
embezzling or stealing from a healthcare benefit program, willfully obstructing a criminal investigation of a healthcare 
offense, and knowingly and willfully falsifying, concealing or covering up a material fact or making any materially false, 
fictitious or fraudulent statement in connection with the delivery of or payment for healthcare benefits, items or services. 
Similar to the federal Anti-Kickback Statute, a person or entity does not need to have actual knowledge of the statute or 
specific intent to violate it in order to have committed a violation. 

There has also been a recent trend of increased federal and state regulation of payments made to physicians and 

other healthcare providers. The Affordable Care Act, among other things, imposes new reporting requirements on drug 
manufacturers for payments made by them to physicians and teaching hospitals, as well as ownership and investment 
interests held by physicians and their immediate family members. Failure to submit required information may result in 
civil monetary penalties of up to an aggregate of $150,000 per year (or up to an aggregate of $1 million per year for 
“knowing failures”), for all payments, transfers of value or ownership or investment interests that are not timely, 
accurately and completely reported in an annual submission. Drug manufacturers are required to submit annual reports to 
the Centers for Medicare & Medicaid Services, which publicly posts the data on its website.    Certain states also 
mandate implementation of compliance programs, impose restrictions on drug manufacturer marketing practices and/or 
require the tracking and reporting of gifts, compensation and other remuneration to physicians. 

We may also be subject to data privacy and security regulation by both the federal government and the states in 
which we conduct our business. HIPAA, as amended by the Health Information Technology and Clinical Health Act, or 
HITECH, and their respective implementing regulations, including the final omnibus rule published on January 25, 
2013, imposes specified requirements relating to the privacy, security and transmission of individually identifiable health 
information. Among other things, HITECH makes HIPAA’s privacy and security standards directly applicable to 
“business associates,” defined as independent contractors or agents of covered entities that create, receive, maintain or 
transmit protected health information in connection with providing a service for or on behalf of a covered entity. 
HITECH also increased the civil and criminal penalties that may be imposed against covered entities, business associates 
and possibly other persons, and gave state attorneys general new authority to file civil actions for damages or injunctions 
in federal courts to enforce the federal HIPAA laws and seek attorney’s fees and costs associated with pursuing federal 
civil actions. In addition, state laws govern the privacy and security of health information in certain circumstances, many 
of which differ from each other in significant ways, thus complicating compliance efforts. 

Employees 

As of February 28, 2017, we had 106 full-time employees, including 41 employees with M.D. or Ph.D. degrees. 

Of these full-time employees, 80 employees are engaged in research and development activities, and 26 are engaged in 
general and administrative activities. None of our employees is represented by a labor union or covered by a collective 
bargaining agreement. We consider our relationship with our employees to be good. 

Corporate Information 

We were incorporated in the State of Delaware in October 2008 under the name ImmunoCo, Inc. In May 2010, 

we changed our name to Hoyle Pharmaceuticals, Inc., and in June 2011, we changed our name again to Blueprint 
Medicines Corporation. Our principal executive offices are located at 38 Sidney Street, Suite 200, Cambridge, 
Massachusetts 02139, and our telephone number is (617) 374-7580.   

44 

Information Available on the Internet 

Our Internet website address is http://www.blueprintmedicines.com. The information contained on, or that can 
be accessed through, our website is not a part of or incorporated by reference in this Annual Report on Form 10-K. We 
have included our website address in this in this Annual Report on Form 10-K solely as an inactive textual reference. We 
make available free of charge through our website our Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, 
Current Reports on Form 8-K and amendments to those reports filed or furnished pursuant to Sections 13(a) and 15(d) of 
the Exchange Act. We make these reports available through the “Investors—SEC Filings” section of our website as soon 
as reasonably practicable after we electronically file such reports with, or furnish such reports to, the Securities and 
Exchange Commission, or SEC. We also make available, free of charge on our website, the reports filed with the SEC 
by our executive officers, directors and 10% stockholders pursuant to Section 16 under the Exchange Act as soon as 
reasonably practicable after copies of those filings are provided to us by those persons. You can find, copy and inspect 
information we file at the SEC’s public reference room, which is located at 100 F Street, N.E., Room 1580, Washington, 
DC 20549. Please call the SEC at 1-800-SEC-0330 for more information about the operation of the SEC’s public 
reference room. You can review our electronically filed reports and other information that we file with the SEC on the 
SEC’s website at http://www.sec.gov. 

Item 1A.    Risk Factors 

The following risk factors and other information included in this Annual Report on Form 10-K should be 

carefully considered. The risks and uncertainties described below are not the only ones we face. Additional risks and 
uncertainties not presently known to us or that we presently deem less significant may also impair our business 
operations. Please see page 1 of this Annual Report on Form 10-K for a discussion of some of the forward-looking 
statements that are qualified by these risk factors. If any of the following risks occur, our business, financial condition, 
results of operations and future growth prospects could be materially and adversely affected. 

Risks Related to Our Financial Position and Need for Additional Capital 

We are a biopharmaceutical company with a limited operating history and have not generated any revenue from drug 
sales. We have incurred significant operating losses since our inception and anticipate that we will incur continued 
losses for the foreseeable future. 

We are a biopharmaceutical company with a limited operating history on which investors can base an 
investment decision. Biopharmaceutical drug development is a highly speculative undertaking and involves a substantial 
degree of risk. We commenced operations in April 2011. Our operations to date have been limited primarily to 
organizing and staffing our company, business planning, raising capital, developing our technology, identifying potential 
drug candidates and undertaking pre-clinical studies and commencing Phase 1 clinical trials for our most advanced drug 
candidates, BLU-285, BLU-554 and BLU-667.   

We are currently evaluating BLU-285 in an ongoing Phase 1 clinical trial for defined subsets of patients with 
gastrointestinal stromal tumors, or GIST, and an ongoing Phase 1 clinical trial for advanced systemic mastocytosis, or 
SM and BLU-554 in an ongoing Phase 1 clinical trial in patients with advanced hepatocellular carcinoma, or HCC. In 
addition, in December 2016, the U.S. Food and Drug Administration, or FDA, approved our Investigational New Drug, 
or IND, application for BLU-667 for the treatment of non-small cell lung cancer, or NSCLC, thyroid cancer and other 
advanced solid tumors, and we expect to initiate a Phase 1 clinical trial for BLU-667 for NSCLC, medullary thyroid 
cancer, or MTC, and other advanced solid tumors in the first half of 2017. In September 2015, the FDA granted orphan 
drug designation to BLU-554 for the treatment of HCC, and in January 2016, the FDA granted orphan drug designation 
to BLU-285 for the treatment of GIST and SM. In addition, in October 2016, the FDA granted fast track designation to 
BLU-285 for the treatment of patients with unresectable or metastatic GIST that progressed following treatment with 
imatinib and a second tyrosine kinase inhibitor and for the treatment of patients with unresectable or metastatic GIST 
with the PDGFRα D842V mutation regardless of prior therapy. We have never generated any revenue from drug sales. 
We have not obtained regulatory approvals for any of our drug candidates. 

We have not yet demonstrated our ability to successfully complete any clinical trials, including large-scale, 

pivotal clinical trials, obtain regulatory approvals, manufacture a commercial scale drug, or arrange for a third party to 
do so on our behalf, or conduct sales and marketing activities necessary for successful commercialization. Typically, it 
takes many years to develop one new drug from the time it is discovered to when it is available for treating patients. 

45 

Consequently, any predictions you make about our future success or viability may not be as accurate as they could be if 
we had a longer operating history. We will need to transition from a company with a research focus to a company 
capable of supporting commercial activities. We may not be successful in such a transition. 

Since inception, we have focused substantially all of our efforts and financial resources on developing our 

proprietary compound library, novel target discovery engine and initial drug candidates. To date, we have financed our 
operations primarily through public offerings of our common stock, private placements of our convertible preferred 
stock, collaborations and a debt financing. Through December 31, 2016, we have received an aggregate of $501.3 
million from such transactions, including $312.4 million in aggregate gross proceeds from the sale of common stock in 
our May 2015 initial public offering and December 2016 follow-on underwritten public offering, $115.1 million in gross 
proceeds from the issuance of convertible preferred stock, $18.8 million of upfront and milestone payments from 
Alexion Pharma Holding, or Alexion, a $45.0 million upfront payment from F. Hoffmann-La Roche Ltd and Hoffmann-
La Roche Inc., which we refer to collectively as Roche, and $10.0 million in gross proceeds from the debt financing. 

We have incurred net losses in each year since our inception, and as of December 31, 2016, we had an 
accumulated deficit of $207.5 million. Our net losses were $72.5 million, $52.8 million and $40.3 million for the years 
ended December 31, 2016, 2015 and 2014, respectively. Substantially all of our operating losses have resulted from 
costs incurred in connection with our research and development programs and from general and administrative costs 
associated with our operations. We expect to continue to incur significant expenses and operating losses over the next 
several years and for the foreseeable future. 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 continuing our existing clinical trials and beginning 
additional clinical trials. In addition, if we obtain marketing approval for our drug candidates, we will incur significant 
sales, marketing and outsourced-manufacturing expenses. We have incurred and will continue to incur additional costs 
associated with operating as a public company. 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 
pharmaceuticals, 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 revenue from our lead drug candidates, BLU-285, BLU-554 and BLU-667, 

and we do not expect to generate any revenue from the sale of drugs in the near future. We do not expect to generate 
significant revenue unless and until we obtain marketing approval of, and begin to sell, BLU-285, BLU-554, BLU-667 
or one of our other drug candidates. Our ability to generate revenue depends on a number of factors, including, but not 
limited to, our ability to: 

• 

• 

• 

• 

• 

initiate and successfully complete clinical trials that meet their clinical endpoints; 

initiate and successfully complete all safety studies required to obtain U.S. and foreign marketing 
approval for our drug candidates; 

establish commercial manufacturing capabilities or make arrangements with third party manufacturers 
for clinical supply and commercial manufacturing; 

commercialize our drug candidates, if approved, by developing a sales force or entering into additional 
collaborations with third parties; and 

achieve market acceptance of our drug candidates in the medical community and with third-party 
payors. 

We expect to incur significant sales and marketing costs as we prepare to commercialize our drug candidates. 
Even if we initiate and successfully complete pivotal clinical trials of our drug candidates, and our drug candidates are 
approved for commercial sale, and despite expending these costs, our drug candidates may not be commercially 
successful. We may not achieve profitability soon after generating drug sales, if ever. If we are unable to generate drug 
revenue, we will not become profitable and may be unable to continue operations without continued funding. 

46 

We may need to raise substantial additional funding. If we are unable to raise capital when needed, we would be 
forced to delay, reduce or eliminate some of our drug development programs or commercialization efforts. 

The development of pharmaceuticals is capital-intensive. We are currently advancing our lead drug candidates, 

BLU-285, BLU-554 and BLU-667, through clinical development. We expect our expenses to increase in connection 
with our ongoing activities, particularly as we continue the research and development of, initiate or continue clinical 
trials of, and seek marketing approval for, our drug candidates. In addition, depending on the status of regulatory 
approval or, if we obtain marketing approval for any of our drug candidates, we expect to incur significant 
commercialization expenses related to drug sales, marketing, manufacturing and distribution to the extent that such sales, 
marketing and distribution are not the responsibility of Alexion, Roche or other collaborators. We may also need to raise 
additional funds sooner if we choose to pursue additional indications or geographies for our drug candidates or otherwise 
expand more rapidly than we presently anticipate. Furthermore, we expect to continue to incur additional costs 
associated with operating as a public company. Accordingly, we will need to obtain substantial additional funding in 
connection with our continuing operations. If we are unable to raise capital when needed or on attractive terms, we 
would be forced to delay, reduce or eliminate certain of our research and development programs or future 
commercialization efforts. 

As of December 31, 2016, we had cash, cash equivalents and investments of $268.2 million. Based on our 

current plans, we expect that our existing cash, cash equivalents and investments, excluding any potential option fees 
and milestone payments under our existing collaborations, will be sufficient to enable us to fund our operating expenses 
and capital expenditure requirements into at least late 2018. Our future capital requirements will depend on and could 
increase significantly as a result of many factors, including: 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

the scope, progress, results and costs of drug discovery, pre-clinical development, laboratory testing 
and clinical trials for our drug candidates; 

the costs of producing drug substance and drug product material for use in pre-clinical studies, clinical 
trials and for use as commercial supply; 

the scope, prioritization and number of our research and development programs; 

the success of our collaborations with Alexion and Roche; 

the success of our current or future companion diagnostic test collaborations, including our companion 
diagnostic test with Ventana Medical Systems, Inc., or Ventana, for BLU-554 and our companion 
diagnostic test with QIAGEN Manchester Limited, or Qiagen, for BLU-285; 

the costs, timing and outcome of regulatory review of our drug candidates; 

our ability to establish and maintain collaborations on favorable terms, if at all; 

the achievement of milestones or occurrence of other developments that trigger payments under any 
collaboration agreements we obtain; 

the extent to which we are obligated to reimburse, or entitled to reimbursement of, clinical trial costs 
under future collaboration agreements, if any; 

the costs of preparing, filing and prosecuting patent applications, maintaining and enforcing our 
intellectual property rights and defending intellectual property-related claims; 

the extent to which we acquire or in-license other drug candidates and technologies; 

the costs of securing manufacturing arrangements for development activities and commercial 
production; and 

the costs of establishing or contracting for sales and marketing capabilities if we obtain regulatory 
approvals to market our drug candidates. 

47 

Identifying potential drug candidates and conducting pre-clinical development and testing and clinical trials is a 
time-consuming, expensive and uncertain process that takes years to complete, and we may never generate the necessary 
data or results required to obtain marketing approval and achieve drug sales. In addition, our drug candidates, if 
approved, may not achieve commercial success. Our commercial revenues, if any, will be derived from sales of drugs 
that we do not expect to be commercially available for many years, if at all. Accordingly, we will need to continue to 
rely on additional financing to achieve our business objectives. 

Any additional fundraising efforts may divert our management from their day-to-day activities, which may 

adversely affect our ability to develop and commercialize our drug candidates. Dislocations in the financial markets have 
generally made equity and debt financing more difficult to obtain and may have a material adverse effect on our ability 
to meet our fundraising needs. 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 seek funds through 
arrangements with collaborators or otherwise at an earlier stage than otherwise would be desirable and we may be 
required to relinquish rights to some of our technologies or drug candidates 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 any drug candidate or be 
unable to expand our operations or otherwise capitalize on our business opportunities, as desired, which could materially 
affect our business, financial condition and results of operations. 

Raising additional capital may cause dilution to our stockholders, restrict our operations or require us to relinquish 
rights to our technologies or drug candidates. 

Until such time, if ever, as we can generate substantial drug revenues, we expect to finance our cash needs 
through a combination of public and private equity offerings, debt financings, collaborations, strategic alliances and 
licensing arrangements. We do not have any committed external source of funds, other than our collaborations with 
Alexion and Roche, each of which is limited in scope and duration, and funds already borrowed under the loan and 
security agreement that we entered into with Silicon Valley Bank in May 2013. To the extent that we raise additional 
capital through the sale of common stock or securities convertible or exchangeable into common stock, the ownership 
interest of our stockholders will be diluted, and the terms of these securities may include liquidation or other preferences 
that materially adversely affect the rights of our common 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 funds through additional collaborations, strategic alliances or licensing arrangements with third 

parties, we may have to relinquish valuable rights to our intellectual property, future revenue streams, research programs 
or drug candidates or to grant licenses 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 drug 
development or future commercialization efforts or grant rights to develop and market drug candidates that we would 
otherwise prefer to develop and market ourselves. 

48 

Risks Related to Drug Development and Regulatory Approval 

We are very early in our development efforts with only three drug candidates, BLU-285, BLU-554 and BLU-667, in 
clinical development. All of our other drug candidates are currently in pre-clinical or earlier stages of development. If 
we are unable to advance our other drug candidates to clinical development, obtain regulatory approval for our lead 
drug candidates or other drug candidates and ultimately commercialize our lead drug candidates or other drug 
candidates, or experience significant delays in doing so, our business will be materially harmed. 

We are very early in our development efforts with only three drug candidates, BLU-285, BLU-554 and BLU-

667, in clinical development. All of our other drug candidates are currently in pre-clinical or earlier stages of 
development. We have invested substantially all of our efforts and financial resources in the identification and pre-
clinical development of kinase inhibitors, including the development of our lead drug candidates, BLU-285, BLU-554 
and BLU-667. Our ability to generate drug revenues, which we do not expect will occur for many years, if ever, will 
depend heavily on the successful development and eventual commercialization of our drug candidates, which may never 
occur. We currently generate no revenues from sales of any drugs, and we may never be able to develop or 
commercialize a marketable drug. Each of our drug candidates will require additional pre-clinical or clinical 
development, management of clinical, pre-clinical and manufacturing activities, regulatory approval in multiple 
jurisdictions, obtaining manufacturing supply, building of a commercial organization, substantial investment and 
significant marketing efforts before we generate any revenues from drug sales. In addition, our drug development 
programs contemplate the development of companion diagnostic tests, which are assays or tests to identify an 
appropriate patient population. For example, we have entered into agreements with Ventana to develop and 
commercialize a companion diagnostic test for BLU-554 that we expect to use to identify HCC patients with abberantly 
active FGFR4 signaling as indicated by FGF19 overexpression and Qiagen to develop and commercialize a companion 
diagnostic test for BLU-285 that we expect to use to identify GIST patients with the PDGFRα D842V mutation. 
Companion diagnostic tests are subject to regulation as medical devices and must themselves be approved for marketing 
by the FDA or certain other foreign regulatory agencies before we may commercialize our drug candidates. The success 
of our lead drug candidates and other drug candidates will depend on several factors, including the following: 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

successful enrollment in, and completion of, clinical trials, including our current Phase 1 clinical trials 
for BLU-285 and BLU-554 and our anticipated Phase 1 clinical trial for BLU-667;   

successful completion of pre-clinical studies for our other drug candidates; 

approval of INDs for future clinical trials for our other drug candidates; 

successful development of companion diagnostic tests for use with our drug candidates, including the 
development of a companion diagnostic test for BLU-554 for identifying HCC patients with FGF19 
signaling and BLU-285 for identifying GIST patients with the PDGFRα D842V mutation; 

receipt of regulatory approvals from applicable regulatory authorities; 

establishing commercial manufacturing capabilities or making arrangements with third-party 
manufacturers for clinical supply and commercial manufacturing; 

obtaining and maintaining patent and trade secret protection or regulatory exclusivity for our drug 
candidates; 

launching commercial sales of our drug candidates, if and when approved, whether alone or in 
collaboration with others; 

acceptance of the drug candidates, if and when approved, by patients, the medical community and third 
party payors; 

effectively competing with other therapies; 

obtaining and maintaining healthcare coverage and adequate reimbursement; 

49 

• 

enforcing and defending intellectual property rights and claims; and 

•  maintaining a continued acceptable safety profile of the drug candidates following approval. 

If we do not achieve one or more of these factors in a timely manner or at all, we could experience significant 
delays or an inability to successfully commercialize our drug candidates, which would materially harm our business. If 
we do not receive regulatory approvals for our drug candidates, we may not be able to continue our operations. 

Our approach to the discovery and development of drug candidates that inhibit kinases is unproven, and we do not 
know whether we will be able to develop any drugs of commercial value. 

Our scientific approach focuses on using our novel target discovery engine and our proprietary compound 
library to identify new kinase targets in disease indications. Our focus on using our novel target discovery engine to 
identify potential kinase targets in disease indications may not result in the discovery and development of commercially 
viable drugs for these diseases. The use of our proprietary compound library may not lead to the development of 
commercially viable drugs. Even if we are able to develop a drug candidate that successfully targets these kinases in pre-
clinical studies, we may not succeed in demonstrating safety and efficacy of the drug candidate in clinical trials. 

Clinical drug development involves a lengthy and expensive process, with an uncertain outcome. We may incur 
additional costs or experience delays in completing, or ultimately be unable to complete, the development and 
commercialization of our drug candidates. 

Each of our lead drug candidates, BLU-285, BLU-554 and BLU-667, is in clinical development, and all of our 

other drug candidates are in pre-clinical development. The risk of failure for our lead drug candidates and other drug 
candidates is high. It is impossible to predict when or if any of our drug candidates will prove effective and safe in 
humans or will receive regulatory approval. Before obtaining marketing approval from regulatory authorities for the sale 
of any drug candidate, we must complete pre-clinical studies and then conduct extensive clinical trials to demonstrate the 
safety and efficacy of our drug candidates in humans. Clinical testing is expensive, difficult to design and implement, 
can take many years to complete and is uncertain as to outcome. A failure of one or more clinical trials can occur at any 
stage of testing. The outcome of pre-clinical development testing and early clinical trials may not be predictive of the 
success of later clinical trials, and interim results of a clinical trial do not necessarily predict final results. Moreover, pre-
clinical and clinical data are often susceptible to varying interpretations and analyses, and many companies that have 
believed their drug candidates performed satisfactorily in pre-clinical studies and clinical trials have nonetheless failed to 
obtain marketing approval of their product candidates. Our pre-clinical studies, current Phase 1 clinical trials and future 
clinical trials may not be successful. 

We are currently enrolling patients in our ongoing Phase 1 clinical trials for BLU-285 for the treatment of 
advanced GIST, BLU-285 for the treatment of advanced SM and BLU-554 for the treatment of advanced HCC. We 
expect to initiate a Phase 1 clinical trial for BLU-667 for the treatment of NSCLC, MTC and other advanced solid 
tumors in the first half of 2017. 

Successful completion of our clinical trials is a prerequisite to submitting a new drug application, or NDA, to 

the FDA and a Marketing Authorization Application, or MAA, in the European Union for each drug candidate and, 
consequently, the ultimate approval and commercial marketing of BLU-285, BLU-554, BLU-667 and our other drug 
candidates. We do not know whether any of our clinical trials for our lead drug candidates will be completed on 
schedule, if at all. 

We may experience delays in completing our pre-clinical studies and initiating or completing clinical trials, and 
we may experience numerous unforeseen events during, or as a result of, any future clinical trials that we could conduct 
that could delay or prevent our ability to receive marketing approval or commercialize our drug candidates, including: 

• 

regulators or institutional review boards, or IRBs, or ethics committees may not authorize us or our 
investigators to commence a clinical trial or conduct a clinical trial at a prospective trial site; 

•  we may experience delays in reaching, or fail to reach, agreement on acceptable terms with 

prospective trial sites and prospective contract research organizations, or CROs, the terms of which 
can be subject to extensive negotiation and may vary significantly among different CROs and trial 
sites; 

50 

• 

• 

• 

clinical trials of our drug candidates may produce negative or inconclusive results, and we may decide, 
or regulators may require us, to conduct additional pre-clinical studies or clinical trials or we may 
decide to abandon drug development programs; 

the number of patients required for clinical trials of our drug candidates may be larger than we 
anticipate, enrollment in these clinical trials may be slower than we anticipate or participants may drop 
out of these clinical trials or fail to return for post-treatment follow-up at a higher rate than we 
anticipate; 

our third party contractors may fail to comply with regulatory requirements or meet their contractual 
obligations to us in a timely manner, or at all, or may deviate from the clinical trial protocol or drop 
out of the trial, which may require that we add new clinical trial sites or investigators; 

•  we may elect to, or regulators or IRBs or ethics committees may require that we or our investigators 
suspend or terminate clinical research for various reasons, including noncompliance with regulatory 
requirements or a finding that the participants are being exposed to unacceptable health risks; 

• 

• 

• 

• 

the cost of clinical trials of our drug candidates may be greater than we anticipate; 

the supply or quality of our drug candidates or other materials necessary to conduct clinical trials of 
our drug candidates may be insufficient or inadequate;   

our drug candidates may have undesirable side effects or other unexpected characteristics, causing us 
or our investigators, regulators or IRBs or ethics committees to suspend or terminate the trials, or 
reports may arise from pre-clinical or clinical testing of other cancer therapies that raise safety or 
efficacy concerns about our drug candidates; and 

the FDA or other regulatory authorities may require us to submit additional data or impose other 
requirements before permitting us to initiate a clinical trial. 

We could encounter delays if a clinical trial is suspended or terminated by us, by the IRBs of the institutions in 
which such trials are being conducted, by the Data Safety Monitoring Board, or DSMB, for such trial or by the FDA or 
other regulatory authorities. Such authorities may impose such a suspension or termination due to a number of factors, 
including failure to conduct the clinical trial in accordance with regulatory requirements or our clinical protocols, 
inspection of the clinical trial operations or trial site by the FDA or other regulatory authorities resulting in the 
imposition of a clinical hold, unforeseen safety issues or adverse side effects, failure to demonstrate a benefit from using 
a drug, changes in governmental regulations or administrative actions or lack of adequate funding to continue the clinical 
trial. 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 regulatory approval of our drug candidates. Further, the FDA may disagree with our 
clinical trial design and 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. 

If we are required to conduct additional clinical trials or other testing of our drug candidates beyond those that 

we currently contemplate, if we are unable to successfully complete clinical trials of our drug candidates or other testing, 
if the results of these trials or tests are not positive or are only modestly positive or if there are safety concerns, we may: 

• 

• 

• 

• 

• 

be delayed in obtaining marketing approval for our drug candidates; 

not obtain marketing approval at all; 

obtain approval for indications or patient populations that are not as broad as intended or desired; 

be subject to post-marketing testing requirements; or 

have the drug removed from the market after obtaining marketing approval. 

51 

Our drug development costs will also increase if we experience delays in testing or regulatory approvals. We do 

not know whether any of our clinical trials will begin as planned, will need to be restructured or will be completed on 
schedule, or at all. Significant pre-clinical study or clinical trial delays also could shorten any periods during which we 
may have the exclusive right to commercialize our drug candidates or allow our competitors to bring products to market 
before we do and impair our ability to successfully commercialize our drug candidates and may harm our business and 
results of operations. Any delays in our pre-clinical or future clinical development programs may harm our business, 
financial condition and prospects significantly. 

We may choose not to develop a potential product candidate, or we may suspend or terminate one or more discovery 
programs or pre-clinical drug candidates or programs. 

At any time and for any reason, we may determine that one or more of our discovery programs or pre-clinical 

drug candidates or programs does not have sufficient potential to warrant the allocation of resources toward such 
program or drug candidate. Accordingly, we may choose not to develop a potential drug candidate or elect to suspend or 
terminate one or more of our discovery programs or pre-clinical drug candidates or programs. For example, we have 
determined to suspend our discovery program for inhibitors of neurotrophic tyrosine receptor kinase, or NTRK, and 
predicted NTRK resistant mutants. If we suspend or terminate a program or drug candidate in which we have invested 
significant resources, we will have expended resources on a program that will not provide a full return on our investment 
and may have missed the opportunity to have allocated those resources to potentially more productive uses, including 
existing or future programs or drug candidates. 

If we experience delays or difficulties in the enrollment of patients in clinical trials, our receipt of necessary 
regulatory approvals could be delayed or prevented. 

We may not be able to initiate or continue clinical trials for our drug candidates if we are unable to locate and 
enroll a sufficient number of eligible patients to participate in these trials as required by the FDA or similar regulatory 
authorities outside the United States. In particular, because we are focused on diseases in genomically defined patient 
populations, our ability to enroll eligible patients may be limited or may result in slower enrollment than we anticipate. 
In addition, some of our competitors have ongoing clinical trials for drug candidates that treat the same indications as 
our drug candidates, and patients who would otherwise be eligible for our clinical trials may instead enroll in clinical 
trials of our competitors’ drug candidates. 

Patient enrollment may be affected by other factors including: 

• 

• 

• 

• 

• 

• 

• 

• 

• 

the severity of the disease under investigation; 

the size of the target patient population; 

the eligibility criteria for the clinical trial; 

the availability of an appropriate genomic screening test; 

the perceived risks and benefits of the drug candidate under study; 

the efforts to facilitate timely enrollment in clinical trials; 

the patient referral practices of physicians; 

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

the proximity and availability of clinical trial sites for prospective patients. 

52 

Because the target patient populations for our drug candidates are relatively small, it may be difficult to successfully 
identify patients, which may lead to delays in enrollment for our trials. If the market opportunities for our drug 
candidates are smaller than we believe they are, our product revenues may be adversely affected and our business 
may suffer. 

We focus our research and product development on treatments for cancer and rare genetic diseases, including 

genomically defined cancer and diseases driven by abnormal kinase activation. Because the target patient populations for 
our drug candidates are relatively small it may be difficult to successfully identify patients. We have entered into an 
agreements with Ventana to develop and commercialize a companion diagnostic test for BLU-554 in order to identify 
HCC patients with aberrantly active FGFR4 signaling as indicated by FGF19 overexpression and with Qiagen to develop 
and commercialize a companion diagnostic test for BLU-285 in order to identify GIST patients with the PDGFRα 
D842V mutation. We may engage third parties to develop companion diagnostic tests for use in some of our other 
current or future clinical trials. However, Ventana, Qiagen or other third parties may not be successful in developing 
such companion diagnostic tests, furthering the difficulty in identifying patients for our clinical trials. Our inability to 
enroll a sufficient number of patients in our clinical trials would result in significant delays and could require us to 
abandon one or more clinical trials altogether. Enrollment delays in our clinical trials may result in increased 
development costs for our drug candidates, which would cause the value of our company to decline and limit our ability 
to obtain additional financing. If we are unable to include patients with the driver of the disease, including the applicable 
genomic alteration for diseases in genomically defined patient populations, this could compromise our ability to seek 
participation in FDA’s expedited review and approval programs, including breakthrough therapy designation and fast 
track designation, or otherwise to seek to accelerate clinical development and regulatory timelines. In addition, our 
projections of both the number of people who have these diseases, as well as the subset of people with these diseases 
who have the potential to benefit from treatment with our drug candidates, are based on estimates. These estimates may 
prove to be incorrect, and new studies may reduce the estimated incidence or prevalence of these diseases. The number 
of patients in the United States, European Union and elsewhere may turn out to be lower than expected, may not be 
otherwise amenable to treatment with our products or patients may become increasingly difficult to identify and access, 
all of which would adversely affect our business, prospects and ability to achieve or sustain profitability. 

If we are not able to obtain, or if there are delays in obtaining, required regulatory approvals both for our drug 
candidates and for the related companion diagnostic tests, we will not be able to commercialize, or will be delayed in 
commercializing, our drug candidates, and our ability to generate revenue will be materially impaired. 

Our drug candidates and the related companion diagnostic tests, including the companion diagnostic tests that 

we are developing with Ventana for BLU-554 in order to identify HCC patients with aberrantly active FGFR4 signaling 
as indicated by FGF19 overexpression and with Qiagen for BLU-285 in order to identify GIST patients with the 
PDGFRα D842V mutation, and the activities associated with their development and commercialization, including their 
design, testing, manufacture, safety, efficacy, recordkeeping, labeling, storage, approval, advertising, promotion, sale, 
distribution, import and export are subject to comprehensive regulation by the FDA and other regulatory agencies in the 
United States and by comparable authorities in other countries. Before we can commercialize any of our drug candidates, 
we must obtain marketing approval. We may also need marketing approval for the related companion diagnostic tests, 
including the companion diagnostic tests that we are developing with Ventana for BLU-554 and with Qiagen for BLU-
285. We have not received approval to market any of our drug candidates or related companion diagnostic tests from 
regulatory authorities in any jurisdiction and it is possible that none of our drug candidates or any drug candidates or 
related companion diagnostic tests we may seek to develop in the future will ever obtain regulatory approval. We have 
only limited experience in filing and supporting the applications necessary to gain regulatory approvals and expect to 
rely on third-party CROs and/or regulatory consultants to assist us in this process. Securing regulatory approval requires 
the submission of extensive pre-clinical and clinical data and supporting information to the various regulatory authorities 
for each therapeutic indication to establish the drug candidate’s safety and efficacy. Securing regulatory approval also 
requires the submission of information about the drug manufacturing process to, and inspection of manufacturing 
facilities by, the relevant regulatory authority. Our drug candidates may not be effective, may be only moderately 
effective or may prove to have undesirable or unintended side effects, toxicities or other characteristics that may 
preclude our obtaining marketing approval or prevent or limit commercial use. 

The process of obtaining regulatory approvals, both in the United States and abroad, is expensive, may take 

many years if additional clinical trials are required, if approval is obtained at all, and can vary substantially based upon a 
variety of factors, including the type, complexity and novelty of the drug candidates involved. Changes in marketing 
approval policies during the development period, changes in or the enactment of additional statutes or regulations, or 

53 

changes in regulatory review for each submitted NDA for a drug candidate, Pre-Market Approval, or PMA, application 
for a companion diagnostic test or equivalent application types, may cause delays in the approval or rejection of an 
application. The FDA and comparable authorities in other countries have substantial discretion in the approval process 
and may refuse to accept any application or may decide that our data are insufficient for approval and require additional 
pre-clinical, clinical or other studies. Our drug candidates could be delayed in receiving, or fail to receive, regulatory 
approval for many reasons, including the following: 

• 

the FDA or comparable foreign regulatory authorities may disagree with the design or implementation 
of our clinical trials; 

•  we may be unable to demonstrate to the satisfaction of the FDA or comparable foreign regulatory 

authorities that a drug candidate is safe and effective for its proposed indication or a related companion 
diagnostic test is suitable to identify appropriate patient populations; 

• 

the results of clinical trials may not meet the level of statistical significance required by the FDA or 
comparable foreign regulatory authorities for approval; 

•  we may be unable to demonstrate that a drug candidate’s clinical and other benefits outweigh its safety 

risks; 

• 

• 

• 

• 

the FDA or comparable foreign regulatory authorities may disagree with our interpretation of data 
from pre-clinical studies or clinical trials; 

the data collected from clinical trials of our drug candidates may not be sufficient to support the 
submission of an NDA or other submission or to obtain regulatory approval in the United States or 
elsewhere; 

the FDA or comparable foreign regulatory authorities may fail to approve the manufacturing processes 
or facilities of third-party manufacturers with which we contract for clinical and commercial supplies; 
and 

the approval policies or regulations of the FDA or comparable foreign regulatory authorities may 
significantly change in a manner rendering our clinical data insufficient for approval. 

In addition, even if we were to obtain approval, regulatory authorities may approve any of our drug candidates 
for fewer or more limited indications than we request, may not approve the price we intend to charge for our drugs and 
related companion diagnostic tests, may grant approval contingent on the performance of costly post-marketing clinical 
trials, or may approve a drug candidate with a label that does not include the labeling claims necessary or desirable for 
the successful commercialization of that drug candidate. Any of the foregoing scenarios could materially harm the 
commercial prospects for our drug candidates. 

If we experience delays in obtaining approval or if we fail to obtain approval of our drug candidates and related 
companion diagnostic tests, the commercial prospects for our drug candidates may be harmed and our ability to generate 
revenues will be materially impaired. 

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

Undesirable side effects caused by our drug candidates could cause us to interrupt, delay or halt pre-clinical 
studies or could cause us or regulatory authorities to interrupt, delay or halt clinical trials and could result in a more 
restrictive label or the delay or denial of regulatory approval by the FDA or other regulatory authorities. As is the case 
with all oncology drugs, it is likely that there may be side effects associated with the use of our drug candidates. Results 
of our trials could reveal a high and unacceptable severity and prevalence of these or other side effects. In such an event, 
our trials could be suspended or terminated and the FDA or comparable foreign regulatory authorities could order us to 
cease further development of or deny approval of our drug candidates for any or all targeted indications. The 

54 

drug-related side effects could 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 harm our business, financial condition and prospects 
significantly. 

Further, our drug candidates could cause undesirable side effects in clinical trials related to on-target toxicity. 

For example, the FGF19/FGFR4 signaling axis has been shown to play a role in the regulation of de novo bile acid 
synthesis. Modulation of this signaling axis by treatment with a small molecule FGFR4 inhibitor could lead to the 
clinical symptoms that were observed with administration of an FGF19 antibody. If on-target toxicity is observed, or if 
our drug candidates have characteristics that are unexpected, we may need to abandon their development or limit 
development to more narrow uses or subpopulations in which the undesirable side effects or other characteristics are less 
prevalent, less severe or more acceptable from a risk-benefit perspective. Many compounds that initially showed promise 
in early stage testing for treating cancer have later been found to cause side effects that prevented further development of 
the compound. 

Further, clinical trials by their nature utilize a sample of the potential patient population. With a limited number 

of patients and limited duration of exposure, rare and severe side effects of our drug candidates may only be uncovered 
with a significantly larger number of patients exposed to the drug candidate. If our drug candidates receive marketing 
approval and we or others identify undesirable side effects caused by such drug candidates (or any other similar drugs) 
after such approval, a number of potentially significant negative consequences could result, including: 

• 

• 

regulatory authorities may withdraw or limit their approval of such drug candidates; 

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

•  we may be required to create a medication guide outlining the risks of such side effects for distribution 

to patients; 

•  we may be required to change the way such drug candidates are distributed or administered, conduct 

additional clinical trials or change the labeling of the drug candidates; 

• 

regulatory authorities may require a Risk Evaluation and Mitigation Strategy, or REMS, plan to 
mitigate risks, which 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; 

•  we may be subject to regulatory investigations and government enforcement actions; 

•  we may decide to remove such drug candidates from the marketplace; 

•  we could be sued and held liable for injury caused to individuals exposed to or taking our drug 

candidates; and 

• 

our reputation may suffer. 

We believe that any of these events could prevent us from achieving or maintaining market acceptance of the 

affected drug candidates and could substantially increase the costs of commercializing our drug candidates, if approved, 
and significantly impact our ability to successfully commercialize our drug candidates and generate revenues. 

A breakthrough therapy designation by the FDA for our drug candidates may not lead to a faster development or 
regulatory review or approval process, and it does not increase the likelihood that our drug candidates will receive 
marketing approval. 

We may seek a breakthrough therapy designation for some of our drug candidates. A breakthrough therapy is 

defined as a drug 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 the drug may demonstrate 

55 

substantial improvement over existing therapies on one or more clinically significant endpoints, such as substantial 
treatment effects observed early in clinical development. For drugs that have been designated as breakthrough therapies, 
interaction and communication between the FDA and the sponsor of the trial can help to identify the most efficient path 
for clinical development while minimizing the number of patients placed in ineffective control regimens. Drugs 
designated as breakthrough therapies by the FDA are also eligible for accelerated approval. 

Designation as a breakthrough therapy is within the discretion of the FDA. Accordingly, even if we believe one 

of our drug candidates meets the criteria for designation as a breakthrough therapy, the FDA may disagree and instead 
determine not to make such designation. In any event, the receipt of a breakthrough therapy designation for a drug 
candidate may not result in a faster development process, review or approval compared to drugs considered for approval 
under conventional FDA procedures and does not assure ultimate approval by the FDA. In addition, even if one or more 
of our drug candidates qualify as breakthrough therapies, the FDA may later decide that the drugs no longer meet the 
conditions for qualification. 

A fast track designation by the FDA may not actually lead to a faster development or regulatory review or approval 
process. 

In October 2016, the FDA granted fast track designation to BLU-285 for the treatment of patients with 
unresectable or metastatic GIST that progressed following treatment with imatinib and a second tyrosine kinase inhibitor 
and for the treatment of patients with unresectable or metastatic GIST with the PDGFRα D842V mutation regardless of 
prior therapy. We may also seek fast track designation for some of our other drug candidates. If a drug is intended for the 
treatment of a serious or life-threatening condition and the drug demonstrates the potential to address unmet medical 
needs for this condition, the drug sponsor may apply for fast track designation. The FDA has broad discretion whether or 
not to grant this designation, so even if we believe a particular drug candidate is eligible for this designation, we cannot 
assure you that the FDA would decide to grant it. Even though we have received fast track designation for BLU-285 for 
treatment of patients with unresectable or metastatic GIST that progressed following treatment with imatinib and a 
second tyrosine kinase inhibitor and for the treatment of patients with unresectable or metastatic GIST with the PDGFRα 
D842V mutation regardless of prior therapy, or even if we receive fast track designation for our other drug candidates, 
we may not experience a faster development process, review or approval compared to conventional FDA procedures. 
The FDA may withdraw fast track designation if it believes that the designation is no longer supported by data from our 
clinical development program. 

While we have received orphan drug designation for two of our lead drug candidates, BLU-285 and BLU-554, for 
specified indications, we may seek orphan drug designation for some of our other drug candidates. However, we may 
be unsuccessful in obtaining or may be unable to maintain the benefits associated with orphan drug designation, 
including the potential for market exclusivity. 

In September 2015, the FDA granted orphan drug designation to BLU-554 for the treatment of HCC, and in 

January 2016, the FDA granted orphan drug designation to BLU-285 for the treatment of GIST and SM. As part of our 
business strategy, we may seek orphan drug designation for some of our other drug candidates, and we may be 
unsuccessful. Regulatory authorities in some jurisdictions, including the United States and the European Union, may 
designate drugs for relatively small patient populations as orphan drugs. Under the Orphan Drug Act, the FDA may 
designate a drug as an orphan drug if it is a drug intended to treat a rare disease or condition, which is generally defined 
as a patient population of fewer than 200,000 individuals annually 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. In the United States, orphan drug designation entitles a party to financial 
incentives such as opportunities for grant funding towards clinical trial costs, tax advantages and user-fee waivers.   

Similarly, in the European Union, the European Commission grants orphan drug designation after receiving the 

opinion of the European Medicines Agency’s, or EMA, Committee for Orphan Medicinal Products on an orphan drug 
designation application. Orphan drug designation is intended to promote the development of drugs that are intended for 
the diagnosis, prevention or treatment of life-threatening or chronically debilitating conditions affecting not more than 5 
in 10,000 persons in the European Union and for which no satisfactory method of diagnosis, prevention, or treatment has 
been authorized (or the product would be a significant benefit to those affected). In addition, designation is granted for 
drugs intended for the diagnosis, prevention, or treatment of a life-threatening, seriously debilitating or serious and 
chronic condition and when, without incentives, it is unlikely that sales of the drug in the European Union would be 

56 

sufficient to justify the necessary investment in developing the drug. In the European Union, orphan drug designation 
entitles a party to financial incentives such as reduction of fees or fee waivers. 

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

indication for which it has such designation, the drug is entitled to a period of marketing exclusivity, which precludes the 
EMA or the FDA from approving another marketing application for the same drug and indication for that time period, 
except in limited circumstances. The applicable period is seven years in the United States and ten years in the European 
Union. The European Union exclusivity period can be reduced to six years if a drug no longer meets the criteria for 
orphan drug designation or if the drug is sufficiently profitable so that market exclusivity is no longer justified. 

Even if we obtain orphan drug exclusivity for a drug, that exclusivity may not effectively protect the designated 

drug from competition because different drugs can be approved for the same condition. Even after an orphan drug is 
approved, the FDA can subsequently approve the same drug for the same condition if the FDA concludes that the later 
drug is clinically superior in that it is shown to be safer, more effective or makes a major contribution to patient care. In 
addition, a designated orphan drug may not receive orphan drug exclusivity if it is approved for a use that is broader than 
the indication for which it received orphan designation. Moreover, 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 if the 
manufacturer is unable to assure sufficient quantity of the drug to meet the needs of patients with the rare disease or 
condition. 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. While we intend to seek orphan drug designation 
for our other drug candidates in addition to BLU-554 for the treatment of HCC and BLU-285 for the treatment of GIST 
and SM, we may never receive such designations. Even if we receive orphan drug designation for any of our drug 
candidates, there is no guarantee that we will enjoy the benefits of those designations. 

Even if we receive regulatory approval for any of our drug candidates, we will be subject to ongoing obligations and 
continued regulatory review, which may result in significant additional expense. In addition, our drug candidates, if 
approved, could be subject to labeling and other restrictions and market withdrawal and we may be subject to 
penalties if we fail to comply with regulatory requirements or experience unanticipated problems with our drugs. 

If the FDA or a comparable foreign regulatory authority approves any of our drug candidates, the 

manufacturing processes, labeling, packaging, distribution, adverse event reporting, storage, advertising, promotion and 
recordkeeping for the drug will be subject to extensive and ongoing regulatory requirements. These requirements include 
submissions of safety and other post-marketing information and reports, registration, as well as continued compliance 
with current Good Manufacturing Practices, or cGMPs, and Good Clinical Practices, or GCPs, for any clinical trials that 
we conduct post-approval. Any regulatory approvals that we receive for our drug candidates may also be subject to 
limitations on the approved indicated uses for which the drug may be marketed or to the conditions of approval, or 
contain requirements for potentially costly post-marketing testing, including Phase 4 clinical trials, and surveillance to 
monitor the safety and efficacy of the drug. Later discovery of previously unknown problems with a drug, including 
adverse events of unanticipated severity or frequency, or with our third-party manufacturers or manufacturing processes, 
or failure to comply with regulatory requirements, may result in, among other things: 

• 

• 

• 

• 

• 

restrictions on the marketing or manufacturing of the drug, withdrawal of the drug from the market, or 
voluntary drug recalls; 

fines, warning letters or holds on clinical trials; 

refusal by the FDA to approve pending applications or supplements to approved applications filed by 
us, or suspension or revocation of marketing approvals; 

drug seizure or detention, or refusal to permit the import or export of drugs; and 

injunctions or the imposition of civil or criminal penalties. 

The FDA’s policies may change and additional government regulations may be enacted that could prevent, 

limit or delay regulatory approval of our drug candidates. 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, 

57 

we may lose any marketing approval that we may have obtained, which would adversely affect our business, prospects 
and ability to achieve or sustain profitability. 

We may not be successful in our efforts to use and expand our discovery platform to build a pipeline of drug 
candidates. 

A key element of our strategy is to use our novel target discovery engine to identify kinases that are drivers of 

diseases in genomically defined patient populations with high unmet medical need in order to build a pipeline of drug 
candidates. Although our research and development efforts to date have resulted in a pipeline of drug candidates, we 
may not be able to continue to identify novel kinase drivers and develop drug candidates. Even if we are successful in 
continuing to build our pipeline, the potential drug candidates that we identify may not be suitable for clinical 
development. For example, they may be shown to have harmful side effects or other characteristics that indicate that 
they are unlikely to be drugs that will receive marketing approval and achieve market acceptance. If we do not 
successfully develop and commercialize drug candidates based upon our approach, we will not be able to obtain drug 
revenues in future periods, which likely would result in significant harm to our financial position and adversely affect 
our stock price. 

We may expend our limited resources to pursue a particular drug candidate or indication and fail to capitalize on 
drug candidates or indications that may be more profitable or for which there is a greater likelihood of success. 

Because we have limited financial and managerial resources, we focus on research programs and drug 

candidates that we identify for specific indications. As a result, we may forego or delay pursuit of opportunities with 
other drug candidates or for other indications that later prove to have greater commercial potential. Our resource 
allocation decisions may cause us to fail to capitalize on viable commercial drugs or profitable market opportunities. Our 
spending on current and future research and development programs and drug candidates for specific indications may not 
yield any commercially viable drugs. If we do not accurately evaluate the commercial potential or target market for a 
particular drug candidate, we may relinquish valuable rights to that drug candidate through collaboration, licensing or 
other royalty arrangements in cases in which it would have been more advantageous for us to retain sole development 
and commercialization rights to such drug candidate. 

Risks Related to Commercialization 

The incidence and prevalence for target patient populations of our drug candidates have not been established with 
precision. If the market opportunities for our drug candidates are smaller than we estimate or if any approval that we 
obtain is based on a narrower definition of the patient population, our revenue and ability to achieve profitability will 
be adversely affected, possibly materially. 

The precise incidence and prevalence for SM, GIST, HCC and RET-driven NSCLC and MTC are unknown. 

Our projections of both the number of people who have these diseases, as well as the subset of people with these 
diseases who have the potential to benefit from treatment with our drug candidates, are based on estimates. We estimate 
that in the United States, France, Germany, Italy, Spain, the United Kingdom and Japan, or the Major Markets, there are 
approximately: (i) 4,100 patients with advanced forms of SM, including smoldering SM, who have the KIT D816V 
mutation; (ii) 500 patients with PDGFRα D842V-driven GIST; (iii) 6,300 second line and third line patients with KIT-
driven GIST; (iv) 18,900 first line and approximately 8,000 second line HCC patients with aberrantly active FGFR4 
signaling, as indicated by FGF19 overexpression; and (iv) 10,000 patients with RET-driven NSCLC and approximately 
600 patients with RET-driven MTC.   

The total addressable market opportunity for BLU-285 for the treatment of patients with SM and GIST, 

BLU-554 for the treatment of HCC patients with aberrantly active FGFR4 signaling and BLU-667 for the treatment of 
patients with NSCLC and MTC will ultimately depend upon, among other things, the diagnosis criteria included in the 
final label for each of BLU-285, BLU-554 and BLU-667, if our drug candidates are approved for sale for these 
indications, acceptance by the medical community and patient access, drug pricing and reimbursement. The number of 
patients in the Major Markets and elsewhere, including the number of addressable patients in those markets, may turn 
out to be lower than expected, patients may not be otherwise amenable to treatment with our drugs, or new patients may 
become increasingly difficult to identify or gain access to, all of which would adversely affect our results of operations 
and our business. 

58 

We face substantial competition, which may result in others discovering, developing or commercializing drugs before 
or more successfully than we do. 

The development and commercialization of new drugs is highly competitive. We face competition with respect 

to our current drug candidates, and will face competition with respect to any drug candidates that we may seek to 
develop or commercialize in the future, from major pharmaceutical companies, specialty pharmaceutical companies and 
biotechnology companies worldwide. There are a number of large pharmaceutical and biotechnology companies that 
currently market and sell drugs or are pursuing the development of therapies in the field of kinase inhibition for cancer 
and other diseases. Some of these competitive drugs and therapies are based on scientific approaches that are the same as 
or similar to our approach, and others are based on entirely different approaches. Potential competitors also include 
academic institutions, government agencies and other public and private research organizations that conduct research, 
seek patent protection and establish collaborative arrangements for research, development, manufacturing and 
commercialization. 

Specifically, there are a large number of companies developing or marketing treatments for cancer, including 
many major pharmaceutical and biotechnology companies. If BLU-285 receives marketing approval for advanced SM, 
GIST and/or for GIST patients with the PDGFRα D842V mutation, it may face competition from other drug candidates 
in development for these indications, including drug candidates in development by AB Science S.A., AROG 
Pharmaceuticals, Inc., ARIAD Pharmaceuticals, Inc., a wholly-owned subsidiary of Takeda Pharmaceutical Company 
Limited, Deciphera Pharmaceuticals, LLC, Kolltan Pharmaceuticals, Inc., Novartis AG and Plexxikon Inc., a 
wholly-owned subsidiary of Daiichi Sankyo Company, Limited. Further, if BLU-554 receives marketing approval for 
patients with HCC with FGF19 overexpression, it will face competition from sorafenib, the only approved systemic 
medical therapy for HCC. In addition, BLU-554 may face competition from other drug candidates in development by 
AstraZeneca plc, Bayer AG, Celgene Corporation, Eisai Inc., H3 Biomedicine Inc., Incyte Corporation, Johnson & 
Johnson, Novartis AG, Sanofi S.A., Taiho Pharmaceutical Co., Ltd. and Xoma Ltd. If BLU-667 receives marketing 
approval for patients with RET or mutations, it may face competition from other drug candidates in development, 
including drug candidates in development by ARIAD Pharmaceuticals, Inc., a wholly-owned subsidiary of Takeda 
Pharmaceutical Company Limited, AstraZeneca plc, Eisai Inc., Exelixis, Inc., GlaxoSmithKline plc, Ignyta, Inc., Loxo 
Oncology, Inc., Mirati Therapeutics, Inc., Novartis AG, Pfizer Inc. and Roche.   

Many of the companies against which we are competing or against which we may compete in the future have 
significantly greater financial resources and expertise in research and development, manufacturing, pre-clinical testing, 
conducting clinical trials, obtaining regulatory approvals and marketing approved drugs than we do. Mergers and 
acquisitions in the pharmaceutical, biotechnology and diagnostic industries may result in even more resources being 
concentrated among a smaller number of our competitors. Smaller or early stage companies may also prove to be 
significant competitors, particularly through collaborative arrangements with large and established companies. These 
competitors also compete with us in recruiting and retaining qualified scientific and management personnel and 
establishing clinical trial sites and patient registration for clinical trials, as well as in acquiring technologies 
complementary to, or necessary for, our programs. 

Our commercial opportunity could be reduced or eliminated if our competitors develop and commercialize 

drugs that are safer, more effective, have fewer or less severe side effects, are more convenient or are less expensive than 
any drugs that we or our collaborators may develop. Our competitors also may obtain FDA or other regulatory approval 
for their drugs more rapidly than we may obtain approval for ours, which could result in our competitors establishing a 
strong market position before we or our collaborators are able to enter the market. The key competitive factors affecting 
the success of all of our drug candidates, if approved, are likely to be their efficacy, safety, convenience, price, the 
effectiveness of companion diagnostic tests in guiding the use of related drugs, the level of generic competition and the 
availability of reimbursement from government and other third-party payors. 

Product liability lawsuits against us could cause us to incur substantial liabilities and could limit commercialization 
of any drug candidates that we may develop. 

We will face an inherent risk of product liability exposure related to the testing of our drug candidates in human 

clinical trials and will face an even greater risk if we commercially sell any drug candidates that we may develop. If we 
cannot successfully defend ourselves against claims that our drug candidates caused injuries, we could incur substantial 
liabilities. Regardless of merit or eventual outcome, liability claims may result in: 

• 

decreased demand for any drug candidates that we may develop; 

59 

• 

injury to our reputation and significant negative media attention; 

•  withdrawal of clinical trial participants; 

• 

• 

• 

• 

significant costs to defend the related litigation; 

substantial monetary awards to trial participants or patients; 

loss of revenue; and 

the inability to commercialize any drug candidates that we may develop. 

Although we maintain product liability insurance coverage, it may not be adequate to cover all liabilities that 

we may incur. We anticipate that we will need to increase our insurance coverage when we begin later-stage clinical 
trials and if we successfully commercialize any drug candidate. Insurance coverage is increasingly expensive. We may 
not be able to maintain insurance coverage at a reasonable cost or in an amount adequate to satisfy any liability that may 
arise. 

If we or our collaborators, including Ventana and Qiagen, are unable to successfully develop and commercialize 
companion diagnostic tests for our drug candidates, or experience significant delays in doing so we may not realize 
the full commercial potential of our drug candidates. 

Because we are focused on precision medicine, in which predictive biomarkers will be used to identify the right 

patients for our drug candidates, we believe that our success may depend, in part, on the development and 
commercialization of companion diagnostic tests. There has been limited success to date industrywide in developing and 
commercializing these types of companion diagnostic tests. To be successful, we need to address a number of scientific, 
technical and logistical challenges. We have entered into agreements to develop and commercialize companion 
diagnostic tests with Ventana for BLU-554 in order to identify HCC patients with aberrantly active FGFR4 signaling as 
indicated by FGF19 overexpression and with Qiagen for BLU-285 in order to identify GIST patients with the PDGFRα 
D842V mutation. However, we have not yet initiated development and commercialization of these companion diagnostic 
tests or companion diagnostic tests for any of our other programs. We have little experience in the development and 
commercialization of companion diagnostic tests and may not be successful in developing and commercializing 
appropriate companion diagnostic tests to pair with any of our drug candidates that receive marketing approval. 
Companion diagnostic tests are subject to regulation by the FDA and similar regulatory authorities outside the United 
States as medical devices and require separate regulatory approval prior to commercialization. Given our limited 
experience in developing and commercializing companion diagnostic tests, we expect to rely on Ventana and Qiagen to 
design, manufacture, obtain regulatory approval for and commercialize the companion diagnostic tests for BLU-554 and 
BLU-285, respectively, and we expect to rely in whole or in part on other third parties to design, manufacture, obtain 
regulatory approval for and commercialize any other companion diagnostic tests for our drug candidates. We and our 
collaborators, including Ventana and Qiagen, may encounter difficulties in developing and obtaining approval for the 
companion diagnostic tests, including issues relating to selectivity/specificity, analytical validation, reproducibility, or 
clinical validation. In addition, our collaborators for any companion diagnostic test that we may seek to develop, our 
collaborators, including Ventana and Qiagen: 

•  may not perform their respective obligations as expected or as required under our agreements with 

them; 

•  may not pursue commercialization of a companion diagnostic test even if it receives any required 

regulatory approvals; 

•  may elect not to continue the development of a companion diagnostic test based on changes in their or 
other third parties’ strategic focus or available funding, or external factors such as an acquisition, that 
divert resources or create competing priorities; 

•  may not commit sufficient resources to the marketing and distribution of the a companion diagnostic 

test; and 

•  may terminate their relationship with us. 

60 

Any delay or failure by us or our collaborators, including Ventana and Qiagen, to develop or obtain regulatory 

approval of the companion diagnostic tests could delay or prevent approval of our drug candidates. If we, or any third 
parties that we engage to assist us, including Ventana and Qiagen, are unable to successfully develop and commercialize 
companion diagnostic tests for our drug candidates, or experience delays in doing so: 

• 

• 

the development of our drug candidates may be adversely affected if we are unable to appropriately 
select patients for enrollment in our clinical trials; 

our drug candidates may not receive marketing approval if safe and effective use of a therapeutic drug 
candidate depends on an in vitro diagnostic; and 

•  we may not realize the full commercial potential of any drug candidates that receive marketing 

approval if, among other reasons, we are unable to appropriately select patients who are likely to 
benefit from therapy with our drugs. 

As a result, our business would be harmed, possibly materially. 

In addition, third party collaborators, including Ventana and Qiagen, may encounter production difficulties that 

could constrain the supply of the companion diagnostic tests, and both they and we may have difficulties gaining 
acceptance of the use of the companion diagnostic tests in the clinical community. If such companion diagnostic tests 
fail to gain market acceptance, it would have an adverse effect on our ability to derive revenues from sales of our drug 
candidates, if approved. In addition, the diagnostic company with whom we contract may decide to discontinue selling 
or manufacturing the companion diagnostic test that we anticipate using in connection with development and 
commercialization of our drug candidates or our relationship with such diagnostic company may otherwise terminate. 
We may not be able to enter into arrangements with another diagnostic company to obtain supplies of an alternative 
diagnostic test for use in connection with the development and commercialization of our drug candidates or do so on 
commercially reasonable terms, which could adversely affect and/or delay the development or commercialization of our 
drug candidates. 

Even if we are able to commercialize any drug candidates, such drugs may become subject to unfavorable pricing 
regulations or third-party coverage and reimbursement policies, which would harm our business. 

The regulations that govern regulatory approvals, pricing and reimbursement for new drugs vary widely from 

country to country. Some countries require approval of the sale price of a drug before it can be marketed. In many 
countries, the pricing review period begins after marketing approval is granted. In some foreign markets, prescription 
pharmaceutical pricing remains subject to continuing governmental control even after initial approval is granted. As a 
result, we might obtain marketing approval for a drug candidate in a particular country, but then be subject to price 
regulations that delay our commercial launch of the drug candidate, possibly for lengthy time periods, and negatively 
impact the revenues we are able to generate from the sale of the drug candidate in that country. Adverse pricing 
limitations may hinder our ability to recoup our investment in one or more drug candidates, even if our drug candidates 
obtain marketing approval. 

Our ability to commercialize any drug candidates successfully also will depend in part on the extent to which 

coverage and reimbursement for these drug 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. A primary trend in the U.S. healthcare industry and elsewhere is cost containment. Government 
authorities and third-party payors have attempted to control costs by limiting coverage and the amount of reimbursement 
for particular drugs. Increasingly, third-party payors are requiring that drug companies provide them with predetermined 
discounts from list prices and are challenging the prices charged for drugs. We cannot be sure that coverage will be 
available for any drug candidate that we commercialize and, if coverage is available, the level of reimbursement. 
Reimbursement may impact the demand for, or the price of, any drug candidate for which we obtain marketing approval. 
If reimbursement is not available or is available only to limited levels, we may not be able to successfully commercialize 
any drug candidate for which we obtain marketing approval. 

There may be significant delays in obtaining reimbursement for newly approved drugs, and coverage may be 
more limited than the purposes for which the drug is approved by the FDA or similar regulatory authorities outside the 

61 

United States. Moreover, eligibility for reimbursement does not imply that any drug will be paid for in all cases or at a 
rate that covers our costs, including research, development, manufacture, sale and distribution. Interim reimbursement 
levels for new drugs, if applicable, may also not be sufficient to cover our costs and may not be made permanent. 
Reimbursement rates may vary according to the use of the drug and the clinical setting in which it is used, may be based 
on reimbursement levels already set for lower cost drugs and may be incorporated into existing payments for other 
services. Net prices for drugs may be reduced by mandatory discounts or rebates required by government healthcare 
programs or private payors and by any future relaxation of laws that presently restrict imports of drugs from countries 
where they may be sold at lower prices than in the United States. Third-party payors often rely upon Medicare coverage 
policy and payment limitations in setting their own reimbursement policies. Our inability to promptly obtain coverage 
and profitable payment rates from both government-funded and private payors for any approved drugs that we develop 
could have a material adverse effect on our operating results, our ability to raise capital needed to commercialize drugs 
and our overall financial condition. 

Healthcare legislative reform measures may have a material adverse effect on our business and results of operations. 

In the United States, there have been and continue to be a number of legislative initiatives to contain healthcare 
costs. For example, in March 2010, the Patient Protection and Affordable Care Act, as amended by the Health Care and 
Education Reconciliation Act, or the Affordable Care Act, was passed, which substantially changes the way health care 
is financed by both governmental and private insurers, and significantly impacts the U.S. pharmaceutical industry. The 
Affordable Care Act, among other things, subjects biologic products to potential competition by lower-cost biosimilars, 
addresses a new methodology by which rebates owed by manufacturers under the Medicaid Drug Rebate Program are 
calculated for drugs that are inhaled, infused, instilled, implanted or injected, increases the minimum Medicaid rebates 
owed by manufacturers under the Medicaid Drug Rebate Program and extends the rebate program to individuals enrolled 
in Medicaid managed care organizations, establishes annual fees and taxes on manufacturers of certain branded 
prescription drugs, and a new Medicare Part D coverage gap discount program, in which manufacturers must agree to 
offer 50% point-of-sale discounts off negotiated prices of applicable brand drugs to eligible beneficiaries during their 
coverage gap period, as a condition for the manufacturer’s outpatient drugs to be covered under Medicare Part D. 

In addition, other legislative changes have been proposed and adopted in the United States since the Affordable 

Care Act was enacted. On August 2, 2011, the Budget Control Act of 2011 among other things, created measures for 
spending reductions by Congress. A Joint Select Committee on Deficit Reduction, tasked with recommending a targeted 
deficit reduction of at least $1.2 trillion for the years 2013 through 2021, was unable to reach required goals, thereby 
triggering the legislation’s automatic reduction to several government programs. This includes aggregate reductions of 
Medicare payments to providers of 2% per fiscal year. These reductions went into effect on April 1, 2013 and, due to 
subsequent legislative amendments to the statute, will remain in effect through 2024 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 types of providers. 

Moreover, payment methodologies may be subject to changes in healthcare legislation and regulatory 

initiatives. For example, the Middle Class Tax Relief and Job Creation Act of 2012 required that the Centers for 
Medicare & Medicaid Services, the agency responsible for administering the Medicare program, or CMS, reduce the 
Medicare clinical laboratory fee schedule by 2% in 2013, which served as a base for 2014 and subsequent years. In 
addition, effective January 1, 2014, CMS also began bundling the Medicare payments for certain laboratory tests ordered 
while a patient received services in a hospital outpatient setting. 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 
companion diagnostic tests or additional pricing pressures. 

In January 2017, Congress voted to adopt a budget resolution for fiscal year 2017, that while not a law, is 

widely viewed as the first step toward the passage of legislation that would repeal certain aspects of the Affordable Care 
Act. Further, on January 20, 2017, U.S. President Donald Trump signed an Executive Order directing federal agencies 
with authorities and responsibilities under the Affordable Care Act to waive, defer, grant exemptions from, or delay the 
implementation of any provision of the Affordable Care Act that would impose a fiscal burden on states or a cost, fee, 
tax, penalty or regulatory burden on individuals, healthcare providers, health insurers, or manufacturers of 
pharmaceuticals or medical devices. Congress also could consider subsequent legislation to replace elements of the 
Affordable Care Act that are repealed.   

62 

Healthcare reforms stemming from the repeal of, and potential replacement for, the Affordable Care Act may 

result in more rigorous coverage criteria and lower reimbursement among regulated third-party payors, and in additional 
downward pressure on the prices that we receive for sales of our products, if approved. Any reduction in reimbursement 
from Medicare or other government-funded federal programs, including the Veterans Health Administration, or state 
healthcare programs could lead to a similar reduction in payments from private commercial payors. The implementation 
of cost containment measures or other healthcare reforms may thus prevent us from being able to generate revenue or 
attain profitability. 

We are currently unable to predict what additional legislation or regulation, if any, relating to the health care 

industry may be enacted in the future or what effect recently enacted federal legislation or any such additional legislation 
or regulation would have on our business. The pendency or approval of such proposals or reforms could result in a 
decrease in our stock price or limit our ability to raise capital or to enter into collaboration agreements for the further 
development and potential commercialization of our products. 

If, in the future, we are unable to establish sales and marketing capabilities or enter into agreements with third 
parties to sell and market our drug candidates, we may not be successful in commercializing our drug candidates if 
and when they are approved, and we may not be able to generate any revenue. 

We do not currently have a sales or marketing infrastructure and have limited experience in the sale, marketing 
or distribution of drugs. To achieve commercial success for any approved drug candidate for which we retain sales and 
marketing responsibilities, we must build our sales, marketing, managerial, and other non-technical capabilities or make 
arrangements with third parties to perform these services. In the future, we may choose to build a focused sales and 
marketing infrastructure to sell, or participate in sales activities with our collaborators for, some of our drug candidates if 
and when they are approved. 

There are risks involved with both establishing our own sales and marketing capabilities and entering into 

arrangements with third parties to perform these services. For example, recruiting and training a sales force is expensive 
and time consuming and could delay any drug launch. If the commercial launch of a drug candidate for which we recruit 
a sales force and establish marketing capabilities is delayed or does not occur for any reason, we would have 
prematurely or unnecessarily incurred these commercialization expenses. This may be costly, and our investment would 
be lost if we cannot retain or reposition our sales and marketing personnel. 

Factors that may inhibit our efforts to commercialize our drug candidates on our own include: 

• 

• 

• 

• 

our inability to recruit and retain adequate numbers of effective sales and marketing personnel; 

the inability of sales personnel to obtain access to physicians or persuade adequate numbers of 
physicians to prescribe any future drugs; 

the lack of complementary drugs to be offered by sales personnel, which may put us at a competitive 
disadvantage relative to companies with more extensive product lines; and 

unforeseen costs and expenses associated with creating an independent sales and marketing 
organization. 

If we enter into arrangements with third parties to perform sales, marketing and distribution services, our drug 

revenues or the profitability of these drug revenues to us are likely to be lower than if we were to market and sell any 
drug candidates that we develop ourselves. In addition, we may not be successful in entering into arrangements with 
third parties to sell and market our drug candidates or may be unable to do so on terms that are favorable to us. We likely 
will have little control over such third parties, and any of them may fail to devote the necessary resources and attention 
to sell and market our drug candidates effectively. If we do not establish sales and marketing capabilities successfully, 
either on our own or in collaboration with third parties, we will not be successful in commercializing our drug 
candidates. Further, our business, results of operations, financial condition and prospects will be materially adversely 
affected. 

Our relationships with customers and third-party payors will be subject to applicable anti-kickback, fraud and abuse 
and other healthcare laws and regulations, which could expose us to criminal sanctions, civil penalties, exclusion 

63 

from government healthcare programs, contractual damages, reputational harm and diminished profits and future 
earnings. 

Although we do not currently have any drugs on the market, once we begin commercializing our drug 

candidates, we will be subject to additional healthcare statutory and regulatory requirements and enforcement by the 
federal government and the states and foreign governments in which we conduct our business. Healthcare providers, 
physicians and third-party payors play a primary role in the recommendation and prescription of any drug candidates for 
which we obtain marketing approval. Our future arrangements with third-party payors and customers may expose us to 
broadly applicable fraud and abuse and other healthcare laws and regulations that may constrain the business or financial 
arrangements and relationships through which we market, sell and distribute our drug candidates for which we obtain 
marketing approval. Restrictions under applicable federal and state healthcare laws and regulations include the 
following: 

• 

• 

• 

• 

the federal Anti-Kickback Statute prohibits, among other things, persons from knowingly and willfully 
soliciting, offering, receiving or providing remuneration, directly or indirectly, in cash or in kind, to 
induce or reward either the referral of an individual for, or the purchase, order or recommendation of, 
any good or service, for which payment may be made under federal and state healthcare programs such 
as Medicare and Medicaid. A person or entity does not need to have actual knowledge of the statute or 
specific intent to violate it in order to have committed a violation; 

the federal False Claims Act imposes criminal and civil penalties, including through civil 
whistleblower or qui tam actions, against individuals or entities for knowingly presenting, or causing 
to be presented, to the federal government, claims for payment that are false or fraudulent or making a 
false statement to avoid, decrease or conceal an obligation to pay money to the federal government. In 
addition, the government may assert that a claim including items and services resulting from a 
violation of the federal Anti-Kickback Statute constitutes a false or fraudulent claim for purposes of 
the False Claims Act; 

the federal Health Insurance Portability and Accountability Act of 1996, or HIPAA, imposes criminal 
and civil liability for executing a scheme to defraud any healthcare benefit program, or knowingly and 
willfully falsifying, concealing or covering up a material fact or making any materially false statement 
in connection with the delivery of or payment for healthcare benefits, items or services; similar to the 
federal Anti-Kickback Statute, a person or entity does not need to have actual knowledge of the statute 
or specific intent to violate it in order to have committed a violation; 

the federal physician payment transparency requirements, sometimes referred to as the “Sunshine Act” 
under the Affordable Care Act require manufacturers of drugs, devices, biologics and medical supplies 
that are reimbursable under Medicare, Medicaid, or the Children’s Health Insurance Program to report 
to the Department of Health and Human Services information related to physician payments and other 
transfers of value and the ownership and investment interests of such physicians and their immediate 
family members; 

•  HIPAA, as amended by the Health Information Technology for Economic and Clinical Health Act of 
2009 and its implementing regulations, which also imposes obligations on certain covered entity 
healthcare providers, health plans, and healthcare clearinghouses as well as their business associates 
that perform certain services involving the use or disclosure of individually identifiable health 
information, including mandatory contractual terms, with respect to safeguarding the privacy, security 
and transmission of individually identifiable health information; and 

• 

analogous state laws and regulations, such as state anti-kickback and false claims laws that may apply 
to sales or marketing arrangements and claims involving healthcare items or services reimbursed by 
non-governmental third-party payors, including private insurers; and some state laws require 
pharmaceutical companies to comply with the pharmaceutical industry’s voluntary compliance 
guidelines and the relevant compliance guidance promulgated by the federal government in addition to 
requiring drug manufacturers to report information related to payments to physicians and other health 
care providers or marketing expenditures, and state laws governing the privacy and security of health 

64 

information in certain circumstances, many of which differ from each other in significant ways and 
often are not preempted by HIPAA, thus complicating compliance efforts. 

Ensuring that our future business arrangements with third parties comply with applicable healthcare laws and 
regulations could involve substantial costs. 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 or 
other healthcare laws and regulations. If our operations, including anticipated activities to be conducted by our sales 
team, were to be 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 significant civil, criminal and administrative penalties, damages, fines, exclusion from 
government funded healthcare programs, such as Medicare and Medicaid, and the curtailment or restructuring of our 
operations. If any of the physicians or other providers or entities with whom we expect to do business is found to be not 
in compliance with applicable laws, they may be subject to criminal, civil or administrative sanctions, including 
exclusions from government funded healthcare programs. 

Our future growth may depend, in part, on our ability to penetrate foreign markets, where we would be subject to 
additional regulatory burdens and other risks and uncertainties. 

Our future profitability may depend, in part, on our ability to commercialize our drug candidates in foreign 

markets for which we may rely on collaboration with third parties. We are not permitted to market or promote any of our 
drug candidates before we receive regulatory approval from the applicable regulatory authority in that foreign market, 
and we may never receive such regulatory approval for any of our drug candidates. To obtain separate regulatory 
approval in many other countries we must comply with numerous and varying regulatory requirements of such countries 
regarding safety and efficacy and governing, among other things, clinical trials and commercial sales, pricing and 
distribution of our drug candidates, and we cannot predict success in these jurisdictions. If we obtain approval of our 
drug candidates and ultimately commercialize our drug candidates in foreign markets, we would be subject to additional 
risks and uncertainties, including: 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

our customers’ ability to obtain reimbursement for our drug candidates 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; 

the existence of additional potentially relevant third-party intellectual property rights; 

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 our drug candidates could also be adversely affected by the imposition of governmental 

controls, political and economic instability, trade restrictions and changes in tariffs. 

65 

Governments outside the United States tend to impose strict price controls, which may adversely affect our revenues, 
if any. 

In some countries, particularly countries in the European Union, the pricing of prescription pharmaceuticals is 

subject to governmental control. In these countries, pricing negotiations with governmental authorities can take 
considerable time after the receipt of marketing approval for a drug. To obtain reimbursement or pricing approval in 
some countries, we may be required to conduct a clinical trial that compares the cost-effectiveness of our drug candidate 
to other available therapies. If reimbursement of our drugs is unavailable or limited in scope or amount, or if pricing is 
set at unsatisfactory levels, our business could be materially harmed. In addition, the recent United Kingdom referendum 
on its membership in the European Union resulted in a majority of United Kingdom voters voting to exit the European 
Union, often referred to as Brexit. Brexit has already and may continue to adversely affect European and/or worldwide 
regulatory conditions. Brexit could lead to legal uncertainty and potentially divergent national laws and regulations, 
including those related to the pricing of prescription pharmaceuticals, as the United Kingdom determines which 
European Union laws to replicate or replace. If the United Kingdom were to significantly alter its regulations affecting 
the pricing of prescription pharmaceuticals, we could face significant new costs. As a result, Brexit could impair our 
ability to transact business in the European Union and the United Kingdom. 

If we fail to comply with environmental, health and safety laws and regulations, we could become subject to fines or 
penalties or incur costs that could have a material adverse effect on the success of our business. 

We are subject to numerous environmental, health and safety laws and regulations, including those governing 

laboratory procedures and the handling, use, storage, treatment and disposal of hazardous materials and wastes. Our 
operations involve the use of hazardous and flammable materials, including chemicals and biological and radioactive 
materials. Our operations also produce hazardous waste products. We generally contract with third parties for the 
disposal of these materials and wastes. We cannot eliminate the risk of contamination or injury from these materials. In 
the event of contamination or injury resulting from our use of hazardous materials, we could be held liable for any 
resulting damages, and any liability could exceed our resources. We also could incur significant costs associated with 
civil or criminal fines and penalties. 

Although we maintain workers’ compensation insurance to cover us for costs and expenses we may incur due to 

injuries to our employees resulting from the use of hazardous materials, this insurance may not provide adequate 
coverage against potential liabilities. We do not maintain insurance for environmental liability or toxic tort claims that 
may be asserted against us in connection with our storage or disposal of biological, hazardous or radioactive materials. 

Risks Related to Our Dependence on Third Parties 

We may seek to establish additional collaborations, and, if we are not able to establish them on commercially 
reasonable terms, we may have to alter our development and commercialization plans. 

Our drug development programs and the potential commercialization of our drug candidates will require 
substantial additional cash to fund expenses. For some of our drug candidates, we may decide to collaborate with 
additional pharmaceutical and biotechnology companies for the development and potential commercialization of those 
drug candidates. 

We face significant competition in seeking appropriate collaborators. Whether we reach a definitive agreement 
for a collaboration will depend, among other things, upon our assessment of the collaborator’s resources and expertise, 
the terms and conditions of the proposed collaboration and the proposed collaborator’s evaluation of a number of factors. 
Those factors may include the design or results of clinical trials, the likelihood of approval by the FDA or similar 
regulatory authorities outside the United States, the potential market for the subject drug candidate, the costs and 
complexities of manufacturing and delivering such drug candidate to patients, the potential of competing drugs, the 
existence of uncertainty with respect to our ownership of technology, which can exist if there is a challenge to such 
ownership without regard to the merits of the challenge and industry and market conditions generally. The collaborator 
may also consider alternative drug candidates or technologies for similar indications that may be available to collaborate 
on and whether such a collaboration could be more attractive than the one with us for our drug candidate. The terms of 
any additional collaborations or other arrangements that we may establish may not be favorable to us. 

66 

We may also be restricted under existing collaboration agreements from entering into future agreements on 

certain terms with potential collaborators. Collaborations are complex and time-consuming to negotiate and document. 
In addition, there have been a significant number of recent business combinations among large pharmaceutical 
companies that have resulted in a reduced number of potential future collaborators. 

We may not be able to negotiate additional collaborations on a timely basis, on acceptable terms, or at all. If we 

are unable to do so, we may have to curtail the development of the drug candidate for which we are seeking to 
collaborate, reduce or delay its development program or one or more of our other development programs, delay its 
potential commercialization or reduce the scope of any sales or marketing activities, or increase our expenditures and 
undertake development or commercialization activities at our own expense. If we elect to increase our expenditures to 
fund development or commercialization activities on our own, we may need to obtain additional capital, which may not 
be available to us on acceptable terms or at all. If we do not have sufficient funds, we may not be able to further develop 
our drug candidates or bring them to market and generate drug revenue. 

In addition, our collaborations with Alexion and Roche, as well as any future collaborations that we enter into, 
may not be successful. The success of our collaboration arrangements will depend heavily on the efforts and activities of 
our collaborators. Collaborators generally have significant discretion in determining the efforts and resources that they 
will apply to these collaborations. Disagreements between parties to a collaboration arrangement regarding clinical 
development and commercialization matters can lead to delays in the development process or commercializing the 
applicable drug candidate and, in some cases, termination of the collaboration arrangement. These disagreements can be 
difficult to resolve if neither of the parties has final decision-making authority. Collaborations with pharmaceutical or 
biotechnology companies and other third parties often are terminated or allowed to expire by the other party. Any such 
termination or expiration would adversely affect us financially and could harm our business reputation. 

We rely on third parties to conduct our clinical trials for our drug candidates. If these third parties do not 
successfully carry out their contractual duties, comply with regulatory requirements or meet expected deadlines, we 
may not be able to obtain regulatory approval for or commercialize our drug candidates and our business could be 
substantially harmed. 

We do not have the ability to independently conduct clinical trials. We rely on medical institutions, clinical 

investigators, CROs, contract laboratories and other third parties to conduct or otherwise support clinical trials for our 
drug candidates. We rely heavily on these parties for execution of clinical trials for our drug candidates and control only 
certain aspects of their activities. Nevertheless, we are responsible for ensuring that each of our clinical trials is 
conducted in accordance with the applicable protocol, legal and regulatory requirements and scientific standards, and our 
reliance on CROs will not relieve us of our regulatory responsibilities. For any violations of laws and regulations during 
the conduct of our clinical trials, we could be subject to warning letters or enforcement action that may include civil 
penalties up to and including criminal prosecution. 

We and our CROs are required to comply with regulations, including GCPs, for conducting, monitoring, 
recording and reporting the results of clinical trials to ensure that the data and results are scientifically credible and 
accurate, and that the trial patients are adequately informed of the potential risks of participating in clinical trials and 
their rights are protected. These regulations are enforced by the FDA, the Competent Authorities of the Member States 
of the European Economic Area and comparable foreign regulatory authorities for any drugs in clinical development. 
The FDA enforces GCP regulations through periodic inspections of clinical trial sponsors, principal investigators and 
trial sites. 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 comparable foreign regulatory authorities may require us to perform additional 
clinical trials before approving our marketing applications. We cannot assure you that, upon inspection, the FDA will 
determine that our current or future clinical trials comply with GCPs. In addition, our clinical trials must be conducted 
with drug candidates produced under cGMPs regulations. 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. We also are required to register ongoing clinical trials and post the results of completed 
clinical trials on a government-sponsored database, ClinicalTrials.gov, within certain timeframes. Failure to do so can 
result in fines, adverse publicity and civil and criminal sanctions. 

Although we intend to design the clinical trials for our drug candidates, CROs will conduct all of the clinical 

trials. As a result, many important aspects of our development programs, including their conduct and timing, will be 
outside of our direct control. Our reliance on third parties to conduct current or future clinical trials will also result in 

67 

less direct control over the management of data developed through 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. Outside parties may: 

• 

• 

• 

• 

• 

have staffing difficulties; 

fail to comply with contractual obligations; 

experience regulatory compliance issues; 

undergo changes in priorities or become financially distressed; or 

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

These factors 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. If the CROs do not perform clinical 
trials in a satisfactory manner, breach their obligations to us or fail to comply with regulatory requirements, the 
development, regulatory approval and commercialization of our drug candidates may be delayed, we may not be able to 
obtain regulatory approval and commercialize our drug candidates, or our development program materially and 
irreversibly harmed. If we are unable to rely on clinical data collected by our CROs, we could be required to repeat, 
extend the duration of, or increase the size of any clinical trials we conduct and this could significantly delay 
commercialization and require significantly greater expenditures. 

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 is 
compromised due to the failure to adhere to our clinical protocols, regulatory requirements or for other reasons, any 
clinical trials such CROs are associated with may be extended, delayed or terminated, and we may not be able to obtain 
regulatory approval for or successfully commercialize our drug candidates. As a result, we believe that our financial 
results and the commercial prospects for our drug candidates in the subject indication would be harmed, our costs could 
increase and our ability to generate revenue could be delayed. 

We contract with third parties for the manufacture of our drug candidates for pre-clinical development and clinical 
trials, and we expect to continue to do so for commercialization. This reliance on third parties increases the risk that 
we will not have sufficient quantities of our drug candidates or drugs or such quantities at an acceptable cost, which 
could delay, prevent or impair our development or commercialization efforts. 

We do not currently own or operate, nor do we have any plans to establish in the future, any manufacturing 

facilities or personnel. We rely, and expect to continue to rely, on third parties for the manufacture of our drug 
candidates for pre-clinical development and clinical testing, as well as for the commercial manufacture of our drugs if 
any of our drug candidates receive marketing approval. This reliance on third parties increases the risk that we will not 
have sufficient quantities of our drug candidates or drugs or such quantities at an acceptable cost or quality, which could 
delay, prevent or impair our development or commercialization efforts. 

The facilities used by our contract manufacturers to manufacture our drug candidates must be approved by the 
FDA pursuant to inspections that will be conducted after we submit our marketing applications to the FDA. We do not 
control the manufacturing process of, and will be completely dependent on, our contract manufacturers for compliance 
with cGMPs in connection with the manufacture of our drug candidates. If our contract manufacturers cannot 
successfully manufacture material that conforms to our specifications and the strict regulatory requirements of the FDA 
or others, they will not be able to secure and/or maintain regulatory approval for their manufacturing facilities. In 
addition, we have no control over the ability of our contract manufacturers to maintain adequate quality control, quality 
assurance and qualified personnel. If the FDA or a comparable foreign regulatory authority does not approve these 
facilities for the manufacture of our drug candidates or if it withdraws any such approval in the future, we may need to 
find alternative manufacturing facilities, which would significantly impact our ability to develop, obtain regulatory 
approval for or market our drug candidates, if approved. Further, our failure, or the failure of our third party 
manufacturers, to comply with applicable regulations could result in sanctions being imposed on us, including clinical 
holds, fines, injunctions, civil penalties, delays, suspension or withdrawal of approvals, license revocation, seizures or 

68 

recalls of drug candidates or drugs, if approved, operating restrictions and criminal prosecutions, any of which could 
significantly and adversely affect our business and supplies of our drug candidates. 

We may be unable to establish any agreements with third-party manufacturers or to do so on acceptable terms. 
Even if we are able to establish agreements with third party manufacturers, reliance on third party manufacturers entails 
additional risks, including: 

• 

• 

• 

• 

reliance on the third party for regulatory compliance and quality assurance; 

the possible breach of the manufacturing agreement by the third party; 

the possible misappropriation of our proprietary information, including our trade secrets and 
know-how; and 

the possible termination or nonrenewal of the agreement by the third party at a time that is costly or 
inconvenient for us. 

Our drug candidates and any drugs that we may develop may compete with other drug candidates and approved 

drugs for access to manufacturing facilities. There are a limited number of manufacturers that operate under cGMP 
regulations and that might be capable of manufacturing for us. 

Any performance failure on the part of our existing or future manufacturers could delay clinical development or 
marketing approval. If our current contract manufacturers cannot perform as agreed, we may be required to replace such 
manufacturers. Although we believe that there are several potential alternative manufacturers who could manufacture 
our drug candidates, we may incur added costs and delays in identifying and qualifying any such replacement. 

Our current and anticipated future dependence upon others for the manufacture of our drug candidates or drugs 

may adversely affect our future profit margins and our ability to commercialize any drugs that receive marketing 
approval on a timely and competitive basis. 

The third parties upon whom we rely for the supply of the active pharmaceutical ingredient, drug product and drug 
substance used in our lead drug candidates are our sole source of supply, and the loss of any of these suppliers could 
significantly harm our business. 

The active pharmaceutical ingredients, or API, drug product and drug substance used in our lead drug 
candidates are supplied to us from single-source suppliers. Our ability to successfully develop our drug candidates, and 
to ultimately supply our commercial drugs in quantities sufficient to meet the market demand, depends in part on our 
ability to obtain the API, drug product and drug substance for these drugs in accordance with regulatory requirements 
and in sufficient quantities for commercialization and clinical testing. We do not currently have arrangements in place 
for a redundant or second-source supply of any such API, drug product or drug substance in the event any of our current 
suppliers of such API, drug product and drug substance cease their operations for any reason. 

For all of our drug candidates, we intend to identify and qualify additional manufacturers to provide such API, 

drug product and drug substance prior to submission of an NDA to the FDA and/or an MAA to the EMA. We are not 
certain, however, that our single-source suppliers will be able to meet our demand for their products, either because of 
the nature of our agreements with those suppliers, our limited experience with those suppliers or our relative importance 
as a customer to those suppliers. It may be difficult for us to assess their ability to timely meet our demand in the future 
based on past performance. While our suppliers have generally met our demand for their products on a timely basis in 
the past, they may subordinate our needs in the future to their other customers. 

Establishing additional or replacement suppliers for the API, drug product and drug substance used in our drug 

candidates, if required, may not be accomplished quickly. If we are able to find a replacement supplier, such replacement 
supplier would need to be qualified and may require additional regulatory approval, which could result in further delay. 
While we seek to maintain adequate inventory of the API, drug product and drug substance used in our drug candidates, 
any interruption or delay in the supply of components or materials, or our inability to obtain such API, drug product and 
drug substance from alternate sources at acceptable prices in a timely manner could impede, delay, limit or prevent our 
development efforts, which could harm our business, results of operations, financial condition and prospects. 

69 

Risks Related to Intellectual Property 

If we are unable to adequately protect our proprietary technology or obtain and maintain patent protection for our 
technology and drugs or if the scope of the patent protection obtained is not sufficiently broad, our competitors could 
develop and commercialize technology and drugs similar or identical to ours, and our ability to successfully 
commercialize our technology and drugs may be impaired.   

Our commercial success depends in part on our ability to obtain and maintain proprietary or intellectual 

property protection in the United States and other countries for our drug candidates, including BLU-285, BLU-554 and 
BLU-667, and our core technologies, including our novel target discovery engine and our proprietary compound library 
and other know-how. We seek to protect our proprietary and intellectual property position by, among other methods, 
filing patent applications in the United States and abroad related to our proprietary technology, inventions and 
improvements that are important to the development and implementation of our business. We also rely on trade secrets, 
know-how and continuing technological innovation to develop and maintain our proprietary and intellectual property 
position. 

We own patents and patent applications that relate to BLU-285 and BLU-554 as composition of matter. We 

also own applications relating to composition of matter for KIT inhibitors with different compound families, 
composition of matter for FGFR4 inhibitors with multiple compound families, composition of matter for inhibitors of the 
predicted RET resistant mutants, as well as methods of use for these novel compounds. The issued patent directed to 
BLU-554 composition of matter has a statutory expiration date in 2034, the issued patent directed to BLU-285 
composition of matter has a statutory expiration date in 2034 and any patents issuing from our pending patent 
applications are projected to expire between 2034 and 2037. 

As of February 28, 2017, we owned three issued U.S. patents, five pending U.S. patent applications, 28 foreign 

patent applications in a number of jurisdictions, including Australia, Argentina, Brazil, Bolivia, Canada, China, the 
European Union, Hong Kong, Israel, India, Iraq, Japan, Lebanon, Mexico, New Zealand, Pakistan, Paraguay, 
Philippines, Russia, Singapore, South Africa, South Korea, Taiwan, Uruguay and Venezuela, and one pending Patent 
Cooperation Treaty, or PCT, patent applications directed to our KIT program, including BLU-285. Any U.S. or ex-U.S. 
patents issuing from the pending applications covering BLU-285 will have a statutory expiration date of October 2034. 
Patent term adjustments or patent term extensions could result in later expiration dates. 

As of February 28, 2017, we owned four issued U.S. patents, three pending U.S. patent applications, two 
pending U.S. provisional applications, and 44 pending foreign patent applications in a number of jurisdictions, including 
Argentina, Australia, Bolivia, Brazil, Canada, China, Egypt, the European Union, Hong Kong, Israel, India, Indonesia, 
Iraq, Japan, South Korea, Lebanon, Mexico New Zealand, Pakistan, Paraguay, Philippines, Russia, Singapore, South 
Africa, Taiwan, Thailand, Uruguay and Venezuela, directed to our FGFR4 program, including BLU-554. Any U.S. or 
ex-U.S. patent issuing from the pending applications covering BLU-554 will have a statutory expiration date of July 
2033, December 2033, October 2034 or September 2037. Patent term adjustments or patent term extensions could result 
in later expiration dates. 

As of February 28, 2017, we owned one pending U.S. patent application, two pending PCT applications, two 

pending foreign patent applications filed in Argentina and Taiwan, and three pending provisional U.S. patent 
applications directed to our RET program, which, if issued, will have statutory expiration dates of 2036 or 2037. Patent 
term adjustments or patent term extensions could result in later expiration dates. 

The intellectual property portfolio directed to our platform includes patent applications directed to novel gene 
fusions and the uses of these fusions for detecting and treating conditions implicated with these fusions. As of February 
28, 2017, we owned nine U.S. patent applications, nine European Union patent applications and one pending PCT patent 
application directed to this technology, which, if issued, will have statutory expiration dates ranging from 2034 to 2035 

The patent position of biotechnology and pharmaceutical companies generally is highly uncertain, involves 

complex legal and factual questions and has in recent years been the subject of much litigation. 

The degree of patent protection we require to successfully commercialize our drug candidates may be 
unavailable or severely limited in some cases and may not adequately protect our rights or permit us to gain or keep any 
competitive advantage. We cannot provide any assurances that any of our patents have, or that any of our pending patent 

70 

applications that mature into issued patents will include, claims with a scope sufficient to protect BLU-285, BLU-554 or 
our other drug candidates. In addition, the laws of foreign countries may not protect our rights to the same extent as the 
laws of the United States. Furthermore, patents have a limited lifespan. In the United States, the natural expiration of a 
patent is generally twenty years after it is filed. Various extensions may be available; however, the life of a patent, and 
the protection it affords, is limited. Given the amount of time required for the development, testing and regulatory review 
of new drug candidates, patents protecting such candidates might expire before or shortly after such candidates are 
commercialized. As a result, our owned and licensed patent portfolio may not provide us with adequate and continuing 
patent protection sufficient to exclude others from commercializing drugs similar or identical to our drug candidates, 
including generic versions of such drugs. 

Other parties have developed technologies that may be related or competitive to our own, and such parties may 

have filed or may file patent applications, or may have received or may receive patents, claiming inventions that may 
overlap or conflict with those claimed in our own patent applications or issued patents, with respect to either the same 
methods or formulations or the same subject matter, in either case, that we may rely upon to dominate our patent 
position in the market. Publications of discoveries in the scientific literature often lag behind the actual discoveries, and 
patent applications in the United States and other jurisdictions are typically not published until 18 months after filing, or 
in some cases not at all. Therefore, we cannot know with certainty whether we were the first to make the inventions 
claimed in our owned or licensed patents or pending patent applications, or that we were the first to file for patent 
protection of such inventions. As a result, the issuance, scope, validity, enforceability and commercial value of our 
patent rights cannot be predicted with any certainty. For example, we are aware of a U.S. patent owned by a third party 
that has generic composition of matter claims that cover BLU-554. If the claims of this third party patent are asserted 
against us, we do not believe BLU-554 or our proposed activities related to BLU-554 would be found to infringe any 
valid claim of this patent. While we may decide to initiate proceedings to challenge the validity of this patent in the 
future, we may be unsuccessful, and courts or patent offices in the United States and abroad could uphold the validity of 
any such patent. If we were to challenge the validity of any issued United States patent in court, we would need to 
overcome a statutory presumption of validity that attaches to every United States patent. This means that in order to 
prevail, we would have to present clear and convincing evidence as to the invalidity of the patent’s claims. 

In addition, the patent prosecution process is expensive and time-consuming, and we may not be able to file and 

prosecute all necessary or desirable patent applications at a reasonable cost or in a timely manner. Further, with respect 
to most of the pending patent applications covering our drug candidates, prosecution has yet to commence. Patent 
prosecution is a lengthy process, during which the scope of the claims initially submitted for examination by the U.S. 
Patent and Trademark Office, or USPTO, have been significantly narrowed by the time they issue, if at all. It is also 
possible that we will fail to identify patentable aspects of our research and development output before it is too late to 
obtain patent protection. Moreover, in some circumstances, we do not have the right to control the preparation, filing and 
prosecution of patent applications, or to maintain the patents, covering technology that we license from third parties. 
Therefore, these patents and applications may not be prosecuted and enforced in a manner consistent with the best 
interests of our business. 

Even if we acquire patent protection that we expect should enable us to maintain such competitive advantage, 

third parties may challenge the validity, enforceability or scope thereof, which may result in such patents being 
narrowed, invalidated or held unenforceable. The issuance of a patent is not conclusive as to its inventorship, scope, 
validity or enforceability, and our owned and licensed patents may be challenged in the courts or patent offices in the 
United States and abroad. For example, we may be subject to a third-party submission of prior art to the USPTO 
challenging the priority of an invention claimed within one of our patents, which submissions may also be made prior to 
a patent’s issuance, precluding the granting of any of our pending patent applications. We may become involved in 
opposition, derivation, reexamination, inter partes review, post-grant review or interference proceedings challenging our 
patent rights or the patent rights of others from whom we have obtained licenses to such rights. Competitors may claim 
that they invented the inventions claimed in our issued patents or patent applications prior to us, or may file patent 
applications before we do. Competitors may also claim that we are infringing on their patents and that we therefore 
cannot practice our technology as claimed under our patents, if issued. Competitors may also contest our patents, if 
issued, by showing the patent examiner that the invention was not original, was not novel or was obvious. In litigation, a 
competitor could claim that our patents, if issued, are not valid for a number of reasons. If a court agrees, we would lose 
our rights to those challenged patents. 

In addition, we may in the future be subject to claims by our former employees or consultants asserting an 

ownership right in our patents or patent applications, as a result of the work they performed on our behalf. Although we 

71 

generally require all of our employees, consultants and advisors and any other third parties who have access to our 
proprietary know-how, information or technology to assign or grant similar rights to their inventions to us, we cannot be 
certain that we have executed such agreements with all parties who may have contributed to our intellectual property, 
nor can we be certain that our agreements with such parties will be upheld in the face of a potential challenge, or that 
they will not be breached, for which we may not have an adequate remedy. 

An adverse determination in any such submission or proceeding may result in loss of exclusivity or freedom to 
operate or in patent claims being narrowed, invalidated or held unenforceable, in whole or in part, which could limit our 
ability to stop others from using or commercializing similar or identical technology and drugs, without payment to us, or 
could limit the duration of the patent protection covering our technology and drug candidates. Such challenges may also 
result in our inability to manufacture or commercialize our drug candidates without infringing third party patent rights. 
In addition, if the breadth or strength of protection provided by our patents and patent applications is threatened, it could 
dissuade companies from collaborating with us to license, develop or commercialize current or future drug candidates. 

Even if they are unchallenged, our issued patents and our pending patents, if issued, may not provide us with 

any meaningful protection or prevent competitors from designing around our patent claims to circumvent our owned or 
licensed patents by developing similar or alternative technologies or drugs in a non-infringing manner. For example, a 
third party may develop a competitive drug that provides benefits similar to one or more of our drug candidates but that 
has a different composition that falls outside the scope of our patent protection. If the patent protection provided by the 
patents and patent applications we hold or pursue with respect to our drug candidates is not sufficiently broad to impede 
such competition, our ability to successfully commercialize our drug candidates could be negatively affected, which 
would harm our business. 

Third parties may initiate legal proceedings alleging that we are infringing their intellectual property rights, the 
outcome of which would be uncertain and could have a material adverse effect on the success of our business. 

Our commercial success depends upon our ability and the ability of our collaborators to develop, manufacture, 

market and sell our drug candidates and use our proprietary technologies without infringing the proprietary rights and 
intellectual property of third parties. The biotechnology and pharmaceutical industries are characterized by extensive and 
frequent litigation regarding patents and other intellectual property rights. We may in the future become party to, or 
threatened with, adversarial proceedings or litigation regarding intellectual property rights with respect to our drug 
candidates and technology, including interference proceedings before the USPTO. Our competitors or other third parties 
may assert infringement claims against us, alleging that our drugs are covered by their patents. Given the vast number of 
patents in our field of technology, we cannot be certain that we do not infringe existing patents or that we will not 
infringe patents that may be granted in the future. Many companies have filed, and continue to file, patent applications 
related to kinase inhibitors. Some of these patent applications have already been allowed or issued, and others may issue 
in the future. For example, we are aware of a U.S. patent owned by a third party that has generic composition of matter 
claims that cover BLU-554. If the claims of this third party patent are asserted against us, we do not believe BLU-554 or 
our proposed activities related to BLU-554 would be found to infringe any valid claim of this patent. While we may 
decide to initiate proceedings to challenge the validity of this patent in the future, we may be unsuccessful, and courts or 
patent offices in the United States and abroad could uphold the validity of any such patent. If we were to challenge the 
validity of any issued United States patent in court, we would need to overcome a statutory presumption of validity that 
attaches to every United States patent. This means that in order to prevail, we would have to present clear and 
convincing evidence as to the invalidity of the patent’s claims. 

Since this area is competitive and of strong interest to pharmaceutical and biotechnology companies, there will 

likely be additional patent applications filed and additional patents granted in the future, as well as additional research 
and development programs expected in the future. Furthermore, because patent applications can take many years to issue 
and may be confidential for 18 months or more after filing, and because pending patent claims can be revised before 
issuance, there may be applications now pending which may later result in issued patents that may be infringed by the 
manufacture, use or sale of our drug candidates. If a patent holder believes our drug or drug candidate infringes on its 
patent, the patent holder may sue us even if we have received patent protection for our technology. Moreover, we may 
face patent infringement claims from non-practicing entities that have no relevant drug revenue and against whom our 
own patent portfolio may thus have no deterrent effect. 

If we are found to infringe a third party’s intellectual property rights, we could be required to obtain a license 
from such third party to continue developing and marketing our drug candidates and technology. However, we may not 

72 

be able to obtain any required license on commercially reasonable terms or at all. Even if we were able to obtain such a 
license, it could be granted on non-exclusive terms, thereby providing our competitors and other third parties access to 
the same technologies licensed to us. Without such a license, we could be forced, including by court order, to cease 
developing and commercializing the infringing technology or drug candidates. In addition, we could be found liable for 
monetary damages, including treble damages and attorneys’ fees if we are found to have willfully infringed such 
third-party patent rights. A finding of infringement could prevent us from commercializing our drug candidates or force 
us to cease some of our business operations, which could materially harm our business. 

We may become involved in lawsuits to protect or enforce our patents and other intellectual property rights, which 
could be expensive, time consuming and unsuccessful. 

Competitors and other third parties may infringe, misappropriate or otherwise violate our patents and other 

intellectual property rights. To counter infringement or unauthorized use, we may be required to file infringement 
claims. A court may disagree with our allegations, however, and may refuse to stop the other party from using the 
technology at issue on the grounds that our patents do not cover the third-party technology in question. Further, such 
third parties could counterclaim that we infringe their intellectual property or that a patent we have asserted against them 
is invalid or unenforceable. In patent litigation in the United States, defendant counterclaims challenging the validity, 
enforceability or scope of asserted patents are commonplace. In addition, third parties may initiate legal proceedings 
against us to assert such challenges to our intellectual property rights. The outcome of any such proceeding is generally 
unpredictable. Grounds for a validity challenge could be an alleged failure to meet any of several statutory requirements, 
including lack of novelty, obviousness or non-enablement. Patents may be unenforceable if someone connected with 
prosecution of the patent withheld relevant information from the USPTO or made a misleading statement during 
prosecution. It is possible that prior art of which we and the patent examiner were unaware during prosecution exists, 
which could render our patents invalid. Moreover, it is also possible that prior art may exist that we are aware of but do 
not believe is relevant to our current or future patents, but that could nevertheless be determined to render our patents 
invalid. 

An adverse result in any litigation proceeding could put one or more of our patents at risk of being invalidated 

or interpreted narrowly. If a defendant were to prevail on a legal assertion of invalidity or unenforceability of our patents 
covering one of our drug candidates, we would lose at least part, and perhaps all, of the patent protection covering such 
drug candidate. Competing drugs may also be sold in other countries in which our patent coverage might not exist or be 
as strong. If we lose a foreign patent lawsuit, alleging our infringement of a competitor’s patents, we could be prevented 
from marketing our drugs in one or more foreign countries. Any of these outcomes would have a materially adverse 
effect on our business. 

Intellectual property litigation could cause us to spend substantial resources and distract our personnel from their 
normal responsibilities. 

Litigation or other legal proceedings relating to intellectual property claims, with or without merit, is 
unpredictable and generally expensive and time consuming and is likely to divert significant resources from our core 
business, including distracting our technical and management personnel from their normal responsibilities. 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. In addition, 
there could be public announcements of the results of hearings, motions or other interim proceedings or developments 
and if securities analysts or investors perceive these results to be negative, it could have a substantial adverse effect on 
the price of our common stock. Such litigation or proceedings could substantially increase our operating losses and 
reduce the resources available for development activities or any future sales, marketing or distribution activities. 

We may not have sufficient financial or other resources to adequately conduct such litigation or proceedings. 

Some of our competitors may be able to sustain the costs of such litigation or proceedings more effectively than we can 
because of their greater financial resources and more mature and developed intellectual property portfolios. Accordingly, 
despite our efforts, we may not be able to prevent third parties from infringing upon or misappropriating or from 
successfully challenging our intellectual property rights. Uncertainties resulting from the initiation and continuation of 
patent litigation or other proceedings could have a material adverse effect on our ability to compete in the marketplace. 

73 

Obtaining and maintaining patent protection depends on compliance with various procedural, document submission, 
fee payment and other requirements imposed by governmental patent agencies, and our patent protection could be 
reduced or eliminated for non-compliance with these requirements. 

The USPTO and various foreign governmental patent agencies require compliance with a number of 
procedural, documentary, fee payment and other similar provisions during the patent application process. In addition, 
periodic maintenance fees on issued patents often must be paid to the USPTO and foreign patent agencies over the 
lifetime of the patent. While an unintentional lapse can in many cases be cured by payment of a late fee or by other 
means in accordance with the applicable rules, there are situations in which noncompliance can result in abandonment or 
lapse of the patent or patent application, resulting in partial or complete loss of patent rights in the relevant jurisdiction. 
Non-compliance events that could result in abandonment or lapse of a patent or patent application include, but are not 
limited to, failure to respond to official actions within prescribed time limits, non-payment of fees and failure to properly 
legalize and submit formal documents. If we fail to maintain the patents and patent applications covering our drugs or 
procedures, we may not be able to stop a competitor from marketing drugs that are the same as or similar to our drug 
candidates, which would have a material adverse effect on our business. 

We may not be able to effectively enforce our intellectual property rights throughout the world. 

Filing, prosecuting and defending patents on our drug candidates in all countries throughout the world would be 

prohibitively expensive. The requirements for patentability may differ in certain countries, particularly in developing 
countries. Moreover, our ability to protect and enforce our intellectual property rights may be adversely affected by 
unforeseen changes in foreign intellectual property laws. In addition, the patent laws of some foreign countries do not 
afford intellectual property protection to the same extent as the laws of the United States. Many companies have 
encountered significant problems in protecting and defending intellectual property rights in certain foreign jurisdictions. 
The legal systems of some countries, particularly developing countries, do not favor the enforcement of patents and other 
intellectual property rights. This could make it difficult for us to stop the infringement of our patents or the 
misappropriation of our other intellectual property rights. For example, many foreign countries have compulsory 
licensing laws under which a patent owner must grant licenses to third parties. Consequently, we may not be able to 
prevent third parties from practicing our inventions in all countries outside the United States. Competitors may use our 
technologies in jurisdictions where we have not obtained patent protection to develop their own drugs and, further, may 
export otherwise infringing drugs to territories where we have patent protection, if our ability to enforce our patents to 
stop infringing activities is inadequate. These drugs may compete with our drug candidates, and our patents or other 
intellectual property rights may not be effective or sufficient to prevent them from competing. 

Proceedings to enforce our patent rights in foreign jurisdictions, whether or not successful, could result in 

substantial costs and divert our efforts and resources from other aspects of our business. Furthermore, while we intend to 
protect our intellectual property rights in the major markets for our drug candidates, we cannot ensure that we will be 
able to initiate or maintain similar efforts in all jurisdictions in which we may wish to market our drug candidates. 
Accordingly, our efforts to protect our intellectual property rights in such countries may be inadequate. 

Changes to the patent law in the United States and other jurisdictions could diminish the value of patents in general, 
thereby impairing our ability to protect our drug candidates. 

As is the case with other biopharmaceutical companies, our success is heavily dependent on intellectual 

property, particularly patents. Obtaining and enforcing patents in the biopharmaceutical industry involve both 
technological and legal complexity and is therefore costly, time consuming and inherently uncertain. Recent patent 
reform legislation in the United States and other countries, including the Leahy-Smith America Invents Act, or 
Leahy-Smith Act, signed into law on September 16, 2011, could increase those uncertainties and costs. The Leahy-Smith 
Act includes a number of significant changes to U.S. patent law. These include provisions that affect the way patent 
applications are prosecuted, redefine prior art and provide more efficient and cost-effective avenues for competitors to 
challenge the validity of patents. In addition, the Leahy-Smith Act has transformed the U.S. patent system into a “first to 
file” system. The first-to-file provisions, however, only became effective on March 16, 2013. Accordingly, it is not yet 
clear what, if any, impact the Leahy-Smith Act will have on the operation of our business. However, the Leahy-Smith 
Act and its implementation could make it more difficult to obtain patent protection for our inventions and increase the 
uncertainties and costs surrounding the prosecution of our patent applications and the enforcement or defense of our 
issued patents, all of which could harm our business, results of operations and financial condition. 

74 

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, 
there have been recent proposals for additional changes to the patent laws of the United States and other countries that, if 
adopted, could impact our ability to obtain patent protection for our proprietary technology or our ability to enforce our 
proprietary technology. Depending on future actions by the U.S. Congress, the U.S. courts, the USPTO and the relevant 
law-making bodies in other countries, 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 and patents that we might obtain in 
the future. 

If we are unable to protect the confidentiality of our trade secrets, our business and competitive position may be 
harmed. 

In addition to the protection afforded by patents, we rely upon unpatented trade secret protection, unpatented 
know-how and continuing technological innovation to develop and maintain our competitive position. With respect to 
the building of our proprietary compound library, we consider trade secrets and know-how to be our primary intellectual 
property. We seek to protect our proprietary technology and processes, in part, by entering into confidentiality 
agreements with our collaborators, scientific advisors, employees and consultants, and invention assignment agreements 
with our consultants and employees. We may not be able to prevent the unauthorized disclosure or use of our technical 
know-how or other trade secrets by the parties to these agreements, however, despite the existence generally of 
confidentiality agreements and other contractual restrictions. Monitoring unauthorized uses and disclosures is difficult, 
and we do not know whether the steps we have taken to protect our proprietary technologies will be effective. If any of 
the collaborators, scientific advisors, employees and consultants who are parties to these agreements breaches or violates 
the terms of any of these agreements, we may not have adequate remedies for any such breach or violation, and we could 
lose our trade secrets as a result. Enforcing a claim that a third party illegally obtained and is using our trade secrets, like 
patent litigation, is expensive and time consuming, and the outcome is unpredictable. In addition, courts outside the 
United States are sometimes less willing to protect trade secrets. 

Our trade secrets could otherwise become known or be independently discovered by our competitors. 
Competitors could purchase our drug candidates and attempt to replicate some or all of the competitive advantages we 
derive from our development efforts, willfully infringe our intellectual property rights, design around our protected 
technology or develop their own competitive technologies that fall outside of our intellectual property rights. If any of 
our trade secrets were to be lawfully obtained or independently developed by a competitor, we would have no right to 
prevent them, or those to whom they communicate it, from using that technology or information to compete with us. If 
our trade secrets are not adequately protected so as to protect our market against competitors’ drugs, our competitive 
position could be adversely affected, as could our business. 

We may be subject to damages resulting from claims that we or our employees have wrongfully used or disclosed 
alleged trade secrets of our competitors or are in breach of non-competition or non-solicitation agreements with our 
competitors. 

We could in the future be subject to claims that we or our employees have inadvertently or otherwise used or 

disclosed alleged trade secrets or other proprietary information of former employers or competitors. Although we try to 
ensure that our employees and consultants do not use the intellectual property, proprietary information, know-how or 
trade secrets of others in their work for us, we may in the future be subject to claims that we caused an employee to 
breach the terms of his or her non-competition or non-solicitation agreement, or that we or these individuals have, 
inadvertently or otherwise, used or disclosed the alleged trade secrets or other proprietary information of a former 
employer or competitor. 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 could be a distraction to management. If 
our defenses to these claims fail, in addition to requiring us to pay monetary damages, a court could prohibit us from 
using technologies or features that are essential to our drug candidates, if such technologies or features are found to 
incorporate or be derived from the trade secrets or other proprietary information of the former employers. An inability to 
incorporate such technologies or features would have a material adverse effect on our business, and may prevent us from 
successfully commercializing our drug candidates. In addition, we may lose valuable intellectual property rights or 
personnel as a result of such claims. Moreover, any such litigation or the threat thereof may adversely affect our ability 
to hire employees or contract with independent sales representatives. A loss of key personnel or their work product could 
hamper or prevent our ability to commercialize our drug candidates, which would have an adverse effect on our 
business, results of operations and financial condition. 

75 

Risks Related to Employee Matters, Managing Growth and Other Risks Related to Our Business 

Our future success depends on our ability to retain key executives and to attract, retain and motivate qualified 
personnel. 

We are highly dependent on the research and development, clinical, business development, financial and legal 

expertise of Jeffrey W. Albers, our President and Chief Executive Officer, Anthony L. Boral, our Chief Medical Officer, 
Marion Dorsch, our Chief Scientific Officer, Kathryn Haviland, our Chief Business Officer, Michael Landsittel, our 
Vice President of Finance, and Tracey McCain, our Chief Legal Officer, as well as the other principal members of our 
management, scientific and clinical team. Although we have entered into employment agreements with our executive 
officers, other than Mr. Landsittel, each of our executive officers may terminate their employment with us at any time. 
We do not maintain “key person” insurance for any of our executives or other employees. In addition, we rely on 
consultants and advisors, including scientific and clinical advisors, to assist us in formulating our research and 
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. If we are unable to continue to attract and retain high quality personnel, our ability to pursue our growth strategy will 
be limited. 

We expect to continue hiring qualified development personnel. Recruiting and retaining qualified scientific, 

clinical, manufacturing and sales and marketing personnel will be critical to our success. The loss of the services of our 
executive officers or other key employees could impede the achievement of our research, development and 
commercialization objectives and seriously harm our ability to successfully implement our business strategy. 
Furthermore, replacing key employees and executive officers may be difficult and may take an extended period of time 
because of the limited number of individuals in our industry with the breadth of skills and experience required to 
successfully develop, gain regulatory approval of and commercialize drugs. Competition to hire from this limited pool is 
intense, and we may be unable to hire, train, retain or motivate these key 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 and clinical 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. 

As of February 28, 2017, we had 106 full-time employees, and in connection with operating as a public 

company, we expect to increase our number of employees and the scope of our operations. 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 its 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, give rise to operational mistakes, loss of business opportunities, loss of employees and 
reduced productivity among remaining employees. The physical expansion of our operations may lead to significant 
costs and may divert financial resources from other projects, such as the development of our drug candidates. 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. Our future financial performance and our ability to commercialize our drug candidates, if approved, 
and compete effectively will depend, in part, on our ability to effectively manage the future development and expansion 
of our company. 

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. For example, 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 our drug candidates 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 

76 

resulting in supply disruption, or cause our customers to delay making payments for our services. In addition, Brexit has 
already and may continue to adversely affect European and/or worldwide economic or market, political or regulatory 
conditions and may contribute to instability in the global financial markets, political institutions and regulatory agencies. 
The long-term impact of Brexit, including on our business and our industry, will depend on the terms that are negotiated 
in relation to the United Kingdom’s future relationship with the European Union. 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 or the third parties upon whom we depend may be adversely affected by earthquakes or other natural disasters 
and our business continuity and disaster recovery plans may not adequately protect us from a serious disaster. 

Earthquakes or other natural disasters could severely disrupt our operations, and have a material adverse effect 

on our business, results of operations, financial condition and prospects. If a natural disaster, power outage or other event 
occurred that prevented us from using all or a significant portion of our headquarters, that damaged critical 
infrastructure, such as the manufacturing facilities of our third-party contract manufacturers, or that otherwise disrupted 
operations, it may be difficult or, in certain cases, impossible for us to continue our business for a substantial period of 
time. The disaster recovery and business continuity plans we have in place may prove inadequate in the event of a 
serious disaster or similar event. We may incur substantial expenses as a result of the limited nature of our disaster 
recovery and business continuity plans, which, could have a material adverse effect on our business. 

Our internal computer systems, or those of our third-party CROs or other contractors or consultants, may fail or 
suffer security breaches, which could result in a material disruption of our drug candidates’ development programs. 

Despite the implementation of security measures, our internal computer systems and those of our third-party 

CROs and other contractors and consultants are vulnerable to damage from computer viruses, unauthorized access, 
natural disasters, terrorism, war and telecommunication and electrical failures. While we have not experienced any such 
system failure, accident, or security breach to date, 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 our 
drug 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 drug candidates, or inappropriate disclosure of 
confidential or proprietary information, we could incur liabilities and the further development of our drug candidates 
could be delayed. 

Our employees, principal investigators, CROs and consultants may engage in misconduct or other improper activities, 
including non-compliance with regulatory standards and requirements and insider trading. 

We are exposed to the risk that our employees, principal investigators, CROs and consultants may engage in 

fraudulent conduct or other illegal activity. Misconduct by these parties could include intentional, reckless and/or 
negligent conduct or disclosure of unauthorized activities to us that violate the regulations of the FDA and other 
regulatory authorities, including those laws requiring the reporting of true, complete and accurate information to such 
authorities; healthcare fraud and abuse laws and regulations in the United States and abroad; or laws that require the 
reporting of financial information or data accurately. 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 may restrict or prohibit a wide range of pricing, 
discounting, marketing and promotion, sales commission, customer incentive programs and other business arrangements. 
Activities subject to these laws also involve the improper use of information obtained in the course of clinical trials or 
creating fraudulent data in our pre-clinical studies or clinical trials, which could result in regulatory sanctions and cause 
serious harm to our reputation. We have adopted a code of conduct applicable to all of our employees, but it is not 
always possible to identify and deter misconduct by employees and other third parties, and the precautions we take to 
detect and prevent this activity may not be effective 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. In addition, we are subject to the risk that a person could allege such fraud or other 
misconduct, even if none occurred. 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 civil, criminal and administrative penalties, damages, monetary fines, possible exclusion from participation in 
Medicare, Medicaid and other federal healthcare programs, contractual damages, reputational harm, diminished profits 

77 

and future earnings, and curtailment of our operations, any of which could adversely affect our ability to operate our 
business and our results of operations. 

We may acquire businesses or drugs, or form strategic alliances, in the future, and we may not realize the benefits of 
such acquisitions. 

We may acquire additional businesses or drugs, 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 drugs resulting from a strategic alliance 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. 

Risks Related to Our Common Stock 

We have incurred and will continue to incur increased costs as a result of operating as a public company, and our 
management is required to devote substantial time to new compliance initiatives. 

As a public company, we have incurred and expect to continue to incur, particularly after we are no longer an 

“emerging growth company,” significant legal, accounting and other expenses that we did not incur as a private 
company. In addition, the Sarbanes-Oxley Act of 2002 and rules subsequently implemented by the Securities and 
Exchange Commission, or SEC, and NASDAQ have imposed 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 need to devote a substantial amount of time to these compliance initiatives. 
Moreover, these rules and regulations will increase our legal and financial compliance costs and make some activities 
more time-consuming and costly. For example, we expect that these rules and regulations may make it more difficult and 
more expensive for us to obtain director and officer liability insurance. 

Pursuant to Section 404 of the Sarbanes-Oxley Act of 2002, or Section 404, we will be required to furnish a 
report by our management on our internal control over financial reporting, including an attestation report on internal 
control over financial reporting issued by our independent registered public accounting firm. However, while we remain 
an emerging growth company, we will not be required to include an attestation report on internal control over financial 
reporting issued by our independent registered public accounting firm. To achieve compliance with Section 404 within 
the prescribed period, we will 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 neither we nor our independent registered public 
accounting firm will be able to conclude within the prescribed timeframe that our internal control over financial 
reporting is effective as required by Section 404. 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 price of our common stock has been and may in the future be volatile and fluctuate substantially. 

Our stock price has been and in the future may be subject to substantial volatility. In addition, the stock market 

in general, and NASDAQ listed and biopharmaceutical companies in particular, have experienced extreme price and 
volume fluctuations that have often been unrelated or disproportionate to the operating performance of these companies. 
For example, our stock traded within a range of a high price of $38.33 and a low price of $13.04 per share for the period 
beginning on April 30, 2015, our first day of trading on The NASDAQ Global Select Market, through February 28, 
2017. As a result of this volatility, our stockholders could incur substantial losses. In addition, the market price for our 
common stock may be influenced by many factors, including: 

• 

• 

the success of competitive drugs or technologies; 

results of clinical trials of our drug candidates or those of our competitors; 

78 

• 

• 

• 

• 

• 

• 

• 

• 

regulatory or legal developments in the United States and other countries; 

developments or disputes concerning patent applications, issued patents or other proprietary rights; 

the recruitment or departure of key personnel; 

the level of expenses related to any of our drug candidates or clinical development programs; 

the results of our efforts to discover, develop, acquire or in-license additional drug candidates or drugs; 

actual or anticipated changes in estimates as to financial results, development timelines or 
recommendations by securities analysts; 

variations in our financial results or those of companies that are perceived to be similar to us; 

changes in the structure of healthcare payment systems; 

•  market conditions in the pharmaceutical and biotechnology sectors; 

• 

• 

general economic, industry and market conditions; and 

the other factors described in this “Risk Factors” section. 

These and other market and industry factors may cause the market price and demand for our common stock to 

fluctuate substantially, regardless of our actual operating performance, which may limit or prevent investors from readily 
selling their shares of common stock and may otherwise negatively affect the liquidity of our common stock. In the past, 
when the market price of a stock has been volatile, holders of that stock have instituted securities class action litigation 
against the company that issued the stock. If any of our stockholders brought a lawsuit against us, we could incur 
substantial costs defending the lawsuit. Such a lawsuit could also divert the time and attention of our management. 

An active trading market for our common stock may not be sustained, and investors may not be able to resell their 
shares at or above the price they paid. 

Although we have listed our common stock on The NASDAQ Global Select Market, an active trading market 

for our shares may not be sustained. In the absence of an active trading market for our common stock, investors may not 
be able to sell their common stock at or above the price at which they acquired their shares or at the time that they would 
like to sell. An inactive trading market may also impair our ability to raise capital to continue to fund operations by 
selling shares and may impair our ability to acquire other companies or technologies by using our shares as 
consideration. 

If equity research analysts do not publish research or reports about our business or if they publish negative 
evaluations of or downgrade our common stock, the price of our common stock could decline. 

The trading market for our common stock relies in part on the research and reports that equity research analysts 

publish about us or our business. We do not control these analysts. We may never obtain research coverage by industry 
or financial analysts. If no or few analysts commence coverage of us, the trading price of our stock would likely 
decrease. Even if we do obtain analyst coverage, if one or more of the analysts covering our business downgrade their 
evaluations of our common stock, the price of our common stock could decline. If one or more of these analysts cease to 
cover our common stock, we could lose visibility in the market for our common stock, which in turn could cause our 
common stock price to decline. 

Our executive officers, directors, principal stockholders and their affiliates maintain the ability to exercise significant 
influence over our company and all matters submitted to stockholders for approval. 

The holdings of our executive officers, directors and stockholders who own more than 5% of our outstanding 

common stock, together with their affiliates and related persons, represent beneficial ownership, in the aggregate, of 
approximately 44% of our common stock, based on the number of shares of our common stock outstanding as of 

79 

December 31, 2016. As a result, these stockholders, if they choose to act together, will be able to influence our 
management and affairs and the outcome of matters submitted to our stockholders for approval, including the election of 
directors and any sale, merger, consolidation, or sale of all or substantially all of our assets. This concentration of voting 
power could delay or prevent an acquisition of our company on terms that other stockholders may desire. 

In addition, this concentration of ownership might adversely affect the market price of our common stock by: 

• 

• 

• 

delaying, deferring or preventing a change of control of us; 

impeding a merger, consolidation, takeover or other business combination involving us; or 

discouraging a potential acquirer from making a tender offer or otherwise attempting to obtain control 
of us. 

Anti-takeover provisions in our charter documents and under Delaware law could make an acquisition of us, which 
may be beneficial to our stockholders, more difficult and may prevent attempts by our stockholders to replace or 
remove our current management. 

Provisions in our amended and restated certificate of incorporation and amended and restated by-laws may 
delay or prevent an acquisition of us or a change in our management. These provisions include a classified board of 
directors, a prohibition on actions by written consent of our stockholders and the ability of our board of directors to issue 
preferred stock without stockholder approval. 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 provide for an opportunity to obtain greater value for stockholders by requiring potential acquirors 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. 

Future sales of our common stock, including by us or our directors and executive officers or shares issued upon the 
exercise of currently outstanding options, could cause our stock price to decline. 

A substantial portion of our outstanding common stock can be traded without restriction at any time. In 
addition, a portion of our outstanding common stock is currently restricted as a result of federal securities laws, but can 
be sold at any time subject to applicable volume limitations. As such, sales of a substantial number of shares of our 
common stock in the public market could occur at any time. These sales, or the perception in the market that the holders 
of a large number of shares intend to sell shares, by us or others, could reduce the market price of our common stock or 
impair our ability to raise adequate capital through the sale of additional equity securities. In addition, we have a 
significant number of shares that are subject to outstanding options. The exercise of these options and the subsequent 
sale of the underlying common stock could cause a further decline in our stock price. These sales also might make it 
difficult for us to sell equity securities in the future at a time and at a price that we deem appropriate. We cannot predict 
the number, timing or size of future issuances or the effect, if any, that any future issuances may have on the market 
price for our common stock.   

We are an “emerging growth company,” and the reduced disclosure requirements applicable to emerging growth 
companies may make our common stock less attractive to investors. 

We are an “emerging growth company,” as defined in the Jumpstart Our Business Startups Act of 2012, or the 
JOBS Act. We will remain an emerging growth company until the earlier of (i) December 31, 2020; (ii) the last day of 
the fiscal year in which we have total annual gross revenues of $1 billion or more; (iii) the date on which we have issued 
more than $1 billion in nonconvertible debt during the previous three years; or (iv) the date on which we are deemed to 
be a large accelerated filer under the rules of the SEC, which means the market value of our common stock that is held 
by non-affiliates exceeds $700 million as of the prior June 30th. For so long as we remain an emerging growth company, 
we are permitted and intend to rely on exemptions from certain disclosure requirements that are applicable to other 
public companies that are not emerging growth companies. These exemptions include: 

80 

• 

• 

• 

• 

not being required to comply with the auditor attestation requirements of Section 404 of the 
Sarbanes-Oxley Act of 2002; 

not being required to comply with any requirement that may be adopted by the Public Company 
Accounting Oversight Board regarding mandatory audit firm rotation or a supplement to the auditor’s 
report providing additional information about the audit and the financial statements; 

reduced disclosure obligations regarding executive compensation; and 

exemptions from the requirements of holding a nonbinding advisory vote on executive compensation 
and shareholder approval of any golden parachute payments not previously approved.   

We cannot predict whether investors will find our common stock less attractive if we rely on these exemptions. 

If some investors find our common stock less attractive as a result, there may be a less active trading market for our 
common stock and our stock price may be more volatile. 

In addition, the JOBS Act provides that an emerging growth company can take advantage of an extended 

transition period for complying with new or revised accounting standards. This allows an emerging growth company to 
delay the adoption of certain accounting standards until those standards would otherwise apply to private companies. We 
have irrevocably elected not to avail ourselves of this exemption from new or revised accounting standards and, 
therefore, we will be subject to the same new or revised accounting standards as other public companies that are not 
emerging growth companies. 

Because we do not anticipate paying any cash dividends on our capital stock in the foreseeable future, capital 
appreciation, if any, will be the sole source of gain for our stockholders. 

We have never declared or paid cash dividends on our capital stock. We currently intend to retain all of our 

future earnings, if any, to finance the growth and development of our business. In addition, under the loan and security 
agreement with Silicon Valley Bank, we are currently restricted from paying cash dividends, and we expect these 
restrictions to continue in the future. In addition, the terms of any future debt agreements may preclude us from paying 
dividends. As a result, capital appreciation, if any, of our common stock will be the sole source of gain for our 
stockholders for the foreseeable future. 

Our ability to utilize our net operating loss carryforwards and certain other tax attributes may be limited. 

Under Section 382 of the Internal Revenue Code of 1986, as amended, if a corporation undergoes an 
“ownership change” (generally defined as a greater than 50% change (by value) in the ownership of its equity over a 
three year period), the corporation’s ability to use its pre-change net operating loss carryforwards and certain other 
pre-change tax attributes to offset its post-change income may be limited. We may have experienced such ownership 
changes in the past, and we may experience ownership changes in the future as a result of shifts in our stock ownership, 
some of which are outside our control. As of December 31, 2016, we had federal net operating loss carryforwards of 
approximately $179.8 million, and our ability to utilize those net operating loss carryforwards could be limited by an 
“ownership change” as described above, which could result in increased tax liability to us.   

Item 1B. Unresolved Staff Comments. 

None. 

Item 2. Properties. 

Our headquarters are located in Cambridge, Massachusetts where we occupy approximately 38,500 rentable 

square feet of office and laboratory space pursuant to a lease agreement that we entered into on February 12, 2015. The 
lease term commenced June 15, 2015 and ends on October 31, 2022. We have an option to extend the lease term for five 
additional years. We believe that this office and laboratory space is sufficient to meet our needs for the foreseeable 
future and that suitable additional space will be available as and when needed.   

81 

Item 3. Legal Proceedings. 

We are not currently a party to any material legal proceedings. 

Item 4. Mine Safety Disclosures. 

Not applicable. 

82 

 
 
 
PART II 

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

Certain Information Regarding the Trading of Our Common Stock 

Our common stock trades under the symbol “BPMC” on the NASDAQ Global Select Market and has been 

publicly traded since April 30, 2015. Prior to this time, there was no public market for our common stock. The following 
table sets forth the high and low sales prices of our common stock as reported on the NASDAQ Global Market for the 
periods indicated: 

Year Ended December 31, 2015: 

Second Quarter (beginning April 30, 2015) 
Third Quarter 
Fourth Quarter 

Year Ended December 31, 2016: 

First Quarter 
Second Quarter 
Third Quarter 
Fourth Quarter 

Low 

High 
  37.17      $  18.00   
  33.10      $  19.39   
  27.00      $  19.08   

  25.99      $  13.04   
  22.48      $  13.27   
  29.90      $  19.51   
  38.33      $  25.08   

$ 
$ 
$ 

$ 
$ 
$ 
$ 

Holders 

As of February 28, 2017, there were approximately 48 holders of record of our common stock. This number 

does not include beneficial owners whose shares are held by nominees in street name. 

Dividends 

We have never declared or paid cash dividends on our capital stock. We currently intend to retain all available 
funds and any future earnings, if any, to fund the development and expansion of our business, and we do not anticipate 
paying any cash dividends in the foreseeable future. In addition, pursuant to our loan and security agreement with 
Silicon Valley Bank, we are prohibited from paying cash dividends without the prior written consent of Silicon Valley 
Bank. Moreover, the terms of any future debt agreements may preclude us from paying dividends. Any future 
determination to pay dividends will be made at the discretion of our board of directors and will depend on various 
factors, including applicable laws, our results of operations, financial condition, future prospects and any other factors 
deemed relevant by our board of directors. Investors should not purchase our common stock with the expectation of 
receiving cash dividend. 

Stock Performance Graph 

The following performance graph and related information shall not be deemed to be “soliciting material” or to 

be “filed” with the Securities and Exchange Commission, or SEC, for purposes of Section 18 of the Securities Exchange 
Act of 1934, as amended, or the Exchange Act, nor shall such information be incorporated by reference into any future 
filing under the Exchange Act or Securities Act of 1933, as amended, or the Securities Act, except to the extent that we 
specifically incorporate it by reference into such filing. 

The following performance graph compares the performance of our common stock to the NASDAQ Composite 

Index and to the NASDAQ Biotechnology Index from April 30, 2015 (the first date that shares of our common stock 
were publicly traded) through December 31, 2016. The comparison assumes $100 was invested in our common stock 

83 

 
 
 
 
 
 
 
 
 
 
and in each of the foregoing indices after the market closed on April 30, 2015, and it assumes reinvestment of dividends, 
if any. The stock price performance included in this graph is not necessarily indicative of future stock price performance. 

Issuer Purchases of Equity Securities 

The following table provides information relating to our repurchase of shares of our common stock during the 

three months ended December 31, 2016.   

Period 

October 1 - October 31 
November 1 - November 30 
December 1 - December 31 
Total 

Total Number 
of Shares 
Purchased (1) 

Average Price 
Paid per Share 
($) (2) 

  —  
  —  
  38  
  38  

$ 

$ 

  —  
  —  
  0.06  
  0.06  

Total Number of 
Shares Purchased 
as Part of Publicly 
Announced Plans 
or Programs (3) 

Maximum Number 
(or Approximate 
Dollar Value) of 
Shares that May 
Yet be Purchased 
Under the Plans or 
Programs (3) 

  —  
  —  
  —  
  —  

  — 
  — 
  — 
  — 

(1)  All repurchases were made in connection with the forfeiture of shares of common stock by the recipient of 
such equity incentive awards in connection with the termination of the recipient’s employment or other 
service relationship with us.   

(2)  The repurchase price for all shares of common stock was equal to the price per share initially paid by the 

recipient. 

(3)  We presently have no publicly announced share repurchase plan or program. 

84 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Use of Proceeds from Initial Public Offering of Common Stock 

On May 5, 2015, we completed an initial public offering, or IPO, of our common stock, which resulted in the 

sale of 9,367,708 shares, including 1,221,874 shares sold by us pursuant to the exercise in full by the underwriters of 
their option to purchase additional shares in connection with the offering, at a price to the public of $18.00 per share. 
The offer and sale of all of the shares in our IPO was registered under the Securities Act pursuant to a registration 
statement on Form S-1 (File No. 333-202938), which was declared effective by the SEC on April 29, 2015. Following 
the sale of the shares in connection with the closing of our IPO, the offering terminated. The offering did not terminate 
until the sale of all of the shares offered. Goldman, Sachs & Co. and Cowen and Company acted as joint book-running 
managers for the offering. JMP Securities acted as a co-manager for the offering. Wedbush PacGrow also acted as a co-
manager for the offering. 

We received approximately $154.8 million in net proceeds, after deducting underwriting discounts and 

commissions and offering costs paid by us. As of December 31, 2016, we estimate that we have used approximately 
$117.8 million of the net proceeds from the offering as follows: approximately $28.4 million of external costs to fund 
our Phase 1 clinical trials; approximately $30.2 million of external costs for new and ongoing research activities; 
approximately $22.6 million of internal research and development costs and approximately $36.6 million for working 
capital and other general corporate purposes. None of the offering expenses consisted of direct or indirect payments 
made by us to directors, officers or persons owning 10% or more of our common stock or to their associates, or to our 
affiliates, and we have not used any of the net proceeds from the offering to make payments, directly or indirectly, to any 
such persons. There has been no material change in the planned use of the net proceeds from our IPO as described in our 
final prospectus filed with the SEC on April 30, 2015 pursuant to Rule 424(b)(4) under the Securities Act. We have 
invested the unused proceeds from the offering in cash equivalents and investments in accordance with our investment 
policy. 

Item 6. Selected Financial Data. 

You should read the following selected consolidated financial data together with our financial statements and 
the related notes appearing at the end of this Annual Report on Form 10-K and Item 7 “Management’s Discussion and 
Analysis of Financial Condition and Results of Operations” section of this Annual Report on Form 10-K. We have 
derived the consolidated statement of operations data for the years ended December 31, 2016, 2015 and 2014 and the 
consolidated balance sheet data as of December 31, 2016 and 2015 from our audited consolidated financial statements 
included elsewhere in this Annual Report on Form 10-K. We have derived the consolidated statement of operations data 
for the year ended December 31, 2013 and the consolidated balance sheet data as of December 31, 2014 and 2013 from 
our audited consolidated financial statements and related notes not included in this Annual Report on Form 10-K. The 
selected historical financial information in this section is not intended to replace our financial statements and the related 
notes thereto. Our historical results for any prior period are not necessarily indicative of results to be expected in any 
future period.   

Statements of Operations Data: 
Collaboration revenue 
Operating expenses: 

Research and development 
General and administrative 

Total operating expenses 
Other income (expense): 

Other income (expense), net 
Interest and other expense 
Total other income (expense) 
Net loss 
Convertible preferred stock dividends 
Net loss applicable to common stockholders 
Net loss per share applicable to common stockholders — basic and 

Year Ended 
December 31, 

2016 

2015 

2014 

2013 

(in thousands, except per share data) 

  $   27,772   $   11,400   $

  —  $ 

  —  

  81,131  
  19,218  
    100,349  

  48,588  
     14,456  
     63,044  

  31,844   
  7,890    

  15,928  
  5,072  
  39,734       21,000  

  551  
  (469) 
  82  

  (429) 
  (696) 
  (1,125) 

  226  
  (138) 
  88  
  $   (72,495)  $  (52,769)  $  (40,285)  $   (20,912) 
  (2,870) 
  $   (72,495)  $  (55,922)  $  (46,050)  $   (23,782) 

  (98)    
  (453)    
  (551)    

  (5,765)    

  (3,153) 

  —  

diluted(1) 

  $

  (2.64)  $

  (3.07)  $   (32.41)  $    (23.43) 

Weighted-average number of common shares used in net loss 
per share applicable to common stockholders — basic and 
diluted(1) 

  27,492  

     18,236  

  1,421    

  1,015  

(1)  See Note 12, “Net Loss per Share” in the accompanying notes to our audited consolidated financial statements appearing elsewhere in this 

Annual Report on Form 10-K for further details on the calculation of basic and diluted net loss per share applicable to common 
stockholders. 

85 

 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
  
 
 
  
 
    
    
    
 
  
 
 
  
 
   
 
 
 
   
  
 
 
 
 
 
 
   
  
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
   
    
 
 
  
  
 
 
  
  
 
 
  
  
 
 
  
  
 
 
  
 
 
Balance Sheet Data: 
Cash and cash equivalents 
Investments 
Working capital(2) 
Total assets 
Deferred revenue 
Term loan payable 
Warrant liability 
Convertible preferred stock 
Total stockholders’ equity (deficit) 

As of 
December 31, 

2016 

2015 (1) 

2014 

2013 

(in thousands) 

    52,069   $  162,707   $   47,240   $ 
   216,149  
   191,913  
   282,795  
    47,235  
  4,069  
  —  
  —  
   213,078  

  —  
    151,776  
    178,898  
  13,640  
  7,338  
  —  
  —  
    143,979  

  — 
  41,510  
  49,925  
  — 
  9,042  
  365  
    114,811  
    (79,382) 

  1,987  
  —  
  (705) 
  4,135  
  —  
  2,863  
  119  
  39,958  
    (41,454) 

(1)  Upon the closing of our IPO in May 2015, all outstanding shares of our convertible preferred stock were converted into 15,467,479 shares 
of common stock, and warrants exercisable for convertible preferred stock were automatically converted into warrants exercisable for 
42,423 shares of common stock. 

(2)  We define working capital as current assets less current liabilities. 

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

The following discussion and analysis of our financial condition and results of operations should be read in 
conjunction with our audited consolidated financial statements and related notes appearing elsewhere in this Annual 
Report on Form 10-K. Some of the information contained in this discussion and analysis or set forth elsewhere in this 
Annual Report on Form 10-K, including information with respect to our plans and strategy for our business, includes 
forward-looking statements that involve risks and uncertainties. As a result of many factors, including those factors set 
forth in the ‘‘Risk Factors’’ section of this Annual Report on Form 10-K, our actual results or timing of certain events 
could differ materially from the results or timing described in, or implied by, these forward-looking statements. 

Overview 

We are a biopharmaceutical company focused on improving the lives of patients with genomically defined 

diseases driven by abnormal kinase activation. Our approach is to systematically and reproducibly identify kinases that 
are drivers of diseases in genomically defined patient populations and to craft drug candidates that may provide 
significant and durable clinical responses for patients without adequate treatment options. This integrated biology and 
chemistry approach enables us to identify, characterize and design drug candidates to inhibit novel kinase targets that 
have been difficult to selectively inhibit. By focusing on diseases in genomically defined patient populations, we believe 
that we will have a more efficient development path with a greater likelihood of success. Leveraging our novel target 
discovery engine, we have developed a robust small molecule drug pipeline in cancer and a rare genetic disease.   

Our most advanced drug candidates are BLU-285, BLU-554 and BLU-667. BLU-285 is an orally available, 

potent and highly selective inhibitor that targets KIT, including Exon 17 mutations, and targets PDGFRα, including the 
D842V mutation. These mutations abnormally activate receptor tyrosine kinases that are drivers of cancer and 
proliferative disorders, including gastrointestinal stromal tumors, or GIST, and systemic mastocytosis, or SM. We are 
currently evaluating BLU-285 in an ongoing Phase 1 clinical trial for defined subsets of patients with GIST and an 
ongoing Phase 1 clinical trial for advanced SM. GIST is a rare disease that is a sarcoma, or tumor of bone or connective 
tissue, of the gastrointestinal tract, or GI tract, and SM is a rare disorder that causes an overproduction of mast cells and 
the accumulation of mast cells in the bone marrow and other organs, which can lead to a wide range of debilitating 
symptoms and organ dysfunction and failure. BLU-554 is an orally available, potent and highly selective inhibitor that 
targets FGFR4, a kinase that is aberrantly activated in a defined subset of patients with hepatocellular carcinoma, or 
HCC, the most common type of liver cancer. We are currently evaluating BLU-554 in an ongoing Phase 1 clinical trial 
in patients with advanced HCC. BLU-667 targets RET, a receptor tyrosine kinase that is abnormally activated by 
mutations or translocations, and RET resistant mutants that we predict will arise from treatment with first generation 
therapies. RET is a driver of disease in non-small cell lung cancer, or NSCLC, and cancers of the thyroid, including 
medullary thyroid carcinoma, or MTC, and our research suggests that RET may be a driver of disease in subsets of colon 

86 

 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
     
    
     
    
 
 
 
 
 
  
 
   
 
   
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
cancer, breast cancer and other cancers. In December 2016, the U.S. Food and Drug Administration, or FDA, approved 
our Investigational New Drug, or IND, application for BLU-667 for the treatment of NSCLC, thyroid cancer and other 
advanced solid tumors, and we expect to initiate a Phase 1 clinical trial for BLU-667 for the treatment of NSCLC, MTC 
and other advanced solid tumors in the first half of 2017. In September 2015, the FDA granted orphan drug designation 
to BLU-554 for the treatment of HCC, and in January 2016, the FDA granted orphan drug designation to BLU-285 for 
the treatment of GIST and SM. In addition, in October 2016, the FDA granted fast track designation to BLU-285 for the 
treatment of patients with unresectable or metastatic GIST that progressed following treatment with imatinib and a 
second tyrosine kinase inhibitor and for the treatment of patients with unresectable or metastatic GIST with the PDGFRα 
D842V mutation regardless of prior therapy. We have worldwide development and commercialization rights to BLU-
285, BLU-554 and BLU-667.   

We also have initiated a discovery program targeting protein kinase cAMP-activated catalytic subunit alpha, or 

PRKACA, fusions for the treatment of fibrolamellar carcinoma, or FLC, a rare and distinct subtype of liver cancer that 
typically arises in young adults. PRKACA fusions are the only known recurrent genomic events in FLC and are 
considered to be the driver gene of the disease. Currently, there are no approved therapies for FLC, and surgery is the 
only available treatment option for some patients, but most patients inevitably progress. We will continue to leverage our 
discovery platform to systematically and reproducibly identify kinases that are drivers of diseases in genomically defined 
patient populations and craft drug candidates that potently and selectively target these kinases. We anticipate nominating 
at least one additional discovery program in 2017.   

In addition to our wholly-owned clinical and pre-clinical programs, we have leveraged our discovery platform 

to enter into collaboration programs with Alexion Pharma Holding, or Alexion, and F. Hoffmann-La Roche Ltd and 
Hoffmann-La Roche Inc., which we refer to collectively as Roche.   

Since inception, our operations have focused on organizing and staffing our company, business planning, 

raising capital, establishing our intellectual property, building our discovery platform, including our proprietary 
compound library and new target discovery engine, identifying kinase drug targets and potential drug candidates, 
producing drug substance and drug product material for use in pre-clinical studies and clinical trials, conducting pre-
clinical studies, including GLP toxicology studies and commencing clinical development activities. We do not have any 
drugs approved for sale and have not generated any revenue from drug sales.   

To date, we have financed our operations primarily through public offerings of our common stock, private 
placements of our convertible preferred stock, collaborations and a debt financing. Through December 31, 2016, we 
have received an aggregate of $501.3 million from such transactions, including $312.4 million in aggregate gross 
proceeds from the sale of common stock in our May 2015 initial public offering, or IPO, and December 2016 follow-on 
underwritten public offering, $115.1 million in gross proceeds from the issuance of convertible preferred stock, $18.8 
million of upfront and milestone payments from Alexion, a $45.0 million upfront payment from Roche and $10.0 
million in gross proceeds from the debt financing.   

Since inception, we have incurred significant operating losses. Our net losses were $72.5 million, $52.8 million 

and $40.3 million for the years ended December 31, 2016, 2015 and 2014. As of December 31, 2016, we had an 
accumulated deficit of $207.5 million. We expect to continue to incur significant expenses and operating losses over the 
next several years. We anticipate that our expenses will increase significantly in connection with our ongoing activities, 
particularly as we: 

• 

• 

• 

• 

continue the planned clinical development activities for two of our lead drug candidates, BLU-285 and 
BLU-554, commence the planned clinical development activities for our other lead drug candidate, 
BLU-667; 

continue to produce drug substance and drug product material for use in pre-clinical studies and 
clinical trials; 

continue to discover, validate and develop additional drug candidates; 

conduct research and development activities under our collaborations with Alexion and Roche; 

87 

• 

conduct development and commercialization activities for companion diagnostic tests, including our 
companion diagnostic tests with Ventana Medical Systems, Inc., or Ventana, for BLU-554 and with 
QIAGEN Manchester Limited, or Qiagen, for BLU-285; 

•  maintain, expand and protect our intellectual property portfolio; 

• 

• 

hire additional research, development and business personnel; and 

incur additional costs associated with operating as a public company. 

Financial Operations Overview 

Revenue 

To date, we have not generated any revenue from drug sales and do not expect to generate any revenue from the 

sale of drugs in the near future. Our revenue consists of collaboration revenue under the Alexion agreement and Roche 
agreement, including amounts that are recognized related to upfront payments, milestone payments and amounts due to 
us for research and development services. In the future, revenue may include additional milestone payments and 
royalties on any net product sales under the respective collaboration agreements. We expect that any revenue we 
generate will fluctuate from quarter to quarter as a result of the timing and amount of license fees, research and 
development reimbursements, payments for manufacturing services, and milestone and other payments.   

In the future, we will seek to generate revenue from a combination of drug sales and additional strategic 

relationships we may enter into. 

Expenses 

Research and Development Expenses 

Research and development expenses consist primarily of costs incurred for our research activities, including our 

drug discovery efforts, and the development of our drug candidates, which include: 

• 

• 

• 

• 

• 

employee-related expenses including salaries, benefits, and stock-based compensation expense; 

expenses incurred under agreements with third parties that conduct research and development, pre-
clinical activities, clinical activities and manufacturing on our behalf; 

the cost of consultants; 

the cost of lab supplies and acquiring, developing and manufacturing pre-clinical study and clinical 
trial materials; and 

facilities, depreciation, and other expenses, which include direct and allocated expenses for rent and 
maintenance of facilities, insurance, and other operating costs. 

Research and development costs are expensed as incurred. Costs for certain activities are recognized based on 
an evaluation of the progress to completion of specific tasks. Nonrefundable advance payments for goods or services to 
be received in the future for use in research and development activities are capitalized. The capitalized amounts are 
expensed as the related goods are delivered or the services are performed. 

The successful development of our drug candidates is highly uncertain. As such, at this time, we cannot 

reasonably estimate or know the nature, timing and estimated costs of the efforts that will be necessary to complete the 
remainder of the development of these drug candidates. We are also unable to predict when, if ever, material net cash 
inflows will commence from our drug candidates. This is due to the numerous risks and uncertainties associated with 
developing drugs, including the uncertainty of: 

88 

• 

• 

• 

• 

• 

• 

• 

establishing an appropriate safety profile with IND-enabling toxicology studies; 

successful enrollment in, and completion of clinical trials; 

receipt of marketing approvals from applicable regulatory authorities; 

establishing commercial manufacturing capabilities or making arrangements with third-party 
manufacturers; 

obtaining and maintaining patent and trade secret protection and regulatory exclusivity for our drug 
candidates; 

commercializing the drug candidates, if and when approved, whether alone or in collaboration with 
others; and 

continued acceptable safety profile of the drugs following approval. 

A change in the outcome of any of these variables with respect to the development of any of our drug 

candidates would significantly change the costs and timing associated with the development of that drug candidate. 

Research and development activities are central to our business model. Drug 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 drug candidate development programs progress. However, we 
do not believe that it is possible at this time to accurately project total program-specific expenses through 
commercialization. There are numerous factors associated with the successful commercialization of any of our drug 
candidates, including future trial design and various regulatory requirements, many of which cannot be determined with 
accuracy at this time based on our stage of development. In addition, future commercial and regulatory factors beyond 
our control will impact our clinical development programs and plans. 

A significant portion of our research and development expenses have been external expenses, which we track 

on a program-by-program basis following nomination as a development candidate. Our internal research and 
development expenses are primarily personnel-related expenses, including stock-based compensation expense. We do 
not track our internal research and development expenses on a program-by-program basis as they are deployed across 
multiple projects under development.   

The following table summarizes our external research and development expenses by program for the years 

ended December 31, 2016 and 2015. Pre-development candidate expenses, unallocated expenses and internal research 
and development expenses have been classified separately.   

BLU-285 external expenses 
BLU-554 external expenses 
BLU-667 external expenses 
External pre-development candidate expenses and unallocated expenses 
Internal research and development expenses 
Total research and development expenses 

  $ 

  $ 

2016 

Year Ended December 31,  
2015 
(in thousands) 
  6,338 
  5,134 
  — 
  23,104 
  14,012 
  48,588  $ 

  10,653   $ 
  13,160  
  6,599  
  32,232  
  18,487  
  81,131   $ 

2014 

  5,290   
  3,437  
  —  
  13,855  
  9,262  
  31,844  

We expect that our research and development expenses will increase in future periods as we expand our 

operations and incur additional costs in connection with our clinical trials. These increases will likely include the costs 
related to the implementation and expansion of clinical trial sites and related patient enrollment, monitoring, program 
management and drug product and drug substance manufacturing expenses. In addition, we expect that our research and 
development expenses will increase in future periods as we incur additional costs in connection with research and 
development activities under our collaborations with Alexion and Roche and development activities for companion 
diagnostic tests, including our companion diagnostic tests with Ventana and Qiagen. 

89 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
     
     
 
  
 
 
  
 
  
  
 
  
 
  
  
 
  
  
 
General and Administrative Expenses 

General and administrative expenses consist primarily of salaries and other related costs, including stock-based 

compensation, for personnel in executive, finance, accounting, business development, legal and human resources 
functions. Stock-based compensation includes expense associated with stock-based awards issued to non-employees, 
including directors for non-board related services. Other significant costs include facility costs not otherwise included in 
research and development expenses, legal fees relating to patent and corporate matters and fees for accounting and 
consulting services. 

We expect that our general and administrative expenses will increase in the future to support continued research 

and development activities, including as we continue our existing clinical trials and initiate additional clinical trials, as 
well as pre-commercial development activities. These increases will likely include increased costs related to the hiring of 
additional personnel, legal, auditing and filing fees and general compliance and consulting expenses, among other 
expenses. We have incurred and will continue to incur additional costs associated with operating as a public company. 

Other Income (Expense) 

Other income (expense) consists primarily of income earned on cash equivalents and investments and the 
re-measurement gain or loss associated with the change in the fair value of the convertible preferred stock warrant 
liability in periods prior to our IPO. 

Interest Expense 

Interest expense consists primarily of interest expense on amounts outstanding under a loan and security 

agreement that we entered into with Silicon Valley Bank in May 2013 and amortization of debt discount. 

Critical Accounting Policies and Estimates 

Our management’s discussion and analysis of our financial condition and results of operations are based on our 

consolidated financial statements, which have been prepared in accordance with U.S. generally accepted accounting 
principles. The preparation of these consolidated financial statements requires us to make judgments and estimates that 
affect the reported amounts of assets, liabilities, revenues, and expenses and the disclosure of contingent assets and 
liabilities in our consolidated financial statements. We base our estimates on historical experience, known trends and 
events, and various other factors that are believed to be reasonable under the circumstances. Actual results may differ 
from these estimates under different assumptions or conditions. On an ongoing basis, we evaluate our judgments and 
estimates in light of changes in circumstances, facts and experience. The effects of material revisions in estimates, if any, 
will be reflected in the consolidated financial statements prospectively from the date of change in estimates.   

Our critical accounting policies are those policies that require the most significant judgments and estimates in 
the preparation of our financial statements. Management has determined that our most critical accounting policies are 
those relating to revenue recognition, accrued research and development expenses, available-for-sale investments and 
stock-based compensation. 

Available-for-Sale Investments 

We classify marketable securities with a remaining maturity when purchased of greater than three months as 

available-for-sale. Marketable securities with a remaining maturity date greater than one year are classified as non-
current. Available-for-sale securities are maintained by an investment manager and may consist of U.S. Treasury 
securities and U.S. government agency securities. Available-for-sale securities are carried at fair value with the 
unrealized gains and losses included in other comprehensive income (loss) as a component of stockholders’ equity until 
realized. Any premium or discount arising at purchase is amortized and/or accreted to interest income and/or expense 
over the life of the instrument. Realized gains and losses are determined using the specific identification method and are 
included in other income (expense). If any adjustment to fair value reflects a decline in value of the investment, we 
consider all available evidence to evaluate the extent to which the decline is “other-than-temporary” and, if so, mark the 
investment to market through a charge to our statement of operations and comprehensive loss. 

90 

Revenue Recognition 

We recognize revenue from license and collaboration agreements in accordance with Financial Accounting 

Standards Board, or FASB, Accounting Standards Codification, or ASC, Topic 605, Revenue Recognition, or ASC 605. 
Accordingly, revenue is recognized when all of the following criteria are met: 

• 

• 

• 

• 

persuasive evidence of an arrangement exists; 

delivery has occurred or services have been rendered; 

the seller’s price to the buyer is fixed or determinable; and 

collectability is reasonably assured. 

Amounts received prior to satisfying the revenue recognition criteria are recognized as deferred revenue in our 

balance sheets. Amounts expected to be recognized as revenue within the 12 months following the balance sheet date are 
classified as deferred revenue, current portion. Amounts not expected to be recognized as revenue within the 12 months 
following the balance sheet date are classified as deferred revenue, net of current portion. 

Our revenue is currently generated through our collaboration agreements with Alexion and Roche. During the 
year ended December 31, 2016, we recognized revenue under the Alexion agreement of $23.3 million, which represents 
$14.6 million of reimbursable research and development costs, $1.8 million in milestone payments that were recognized 
upon achievement, as well as a portion of the $15.0 million upfront payment and the $1.8 million non-substantive 
milestone payment previously received. During the year ended December 31, 2016, we received $14.2 million related to 
reimbursable research and development costs under the Alexion agreement. As of December 31, 2016, we have recorded 
unbilled accounts receivable of $3.6 million related to reimbursable research and development costs under the Alexion 
agreement for activities performed during the fourth quarter of 2016. During the year ended December 31, 2016, we 
recognized revenue under the Roche agreement of $4.5 million, which represents a portion of the $45.0 million upfront 
payment. 

The terms of these agreements contain multiple elements, or deliverables, including exclusive license granted 

by us to Alexion and Roche to research, develop, manufacture and commercialize the licensed products and the 
compounds in the field in the territory, as well as research and development activities to be performed by us on behalf of 
Alexion and Roche related to the licensed product candidates. In addition, the terms of these agreements include 
payments to us of one or more of the following: a nonrefundable, upfront payment; contingent milestone payments 
related to specified pre-clinical milestones, development milestones and sales-based commercial milestones; fees for 
research and development services rendered; and royalties on commercial sales of licensed product candidates, if any. 
To date, we have received the upfront payment upon execution of the Alexion agreement, the upfront payment upon 
execution of the Roche agreement, payments for the achievement of the certain pre-clinical milestones under the Alexion 
agreement and payments for certain research and development services under the Alexion agreement. We are eligible to 
earn additional milestone payments under both agreements. We have not earned royalty revenue as a result of product 
sales.   

When evaluating multiple element arrangements, we consider whether the deliverables under the arrangement 
represent separate units of accounting. This evaluation requires subjective determinations and requires management to 
make judgments about the individual deliverables and whether such deliverables are separable from the other aspects of 
the contractual relationship. In determining the units of accounting, management evaluates certain criteria, including 
whether the deliverables have standalone value, based on the consideration of the relevant facts and circumstances for 
each arrangement. The consideration received is allocated among the separate units of accounting using the relative 
selling price method, and the applicable revenue recognition criteria are applied to each of the separate units. 
Deliverables are considered separate units of accounting provided that: (i) the delivered item(s) has value to the customer 
on a stand-alone basis and (ii) if the arrangement includes a general right of return relative to the delivered item(s), 
delivery or performance of the undelivered item(s) is considered probable and substantially in our control. In assessing 
whether an item has stand-alone value, we consider factors such as the research, manufacturing and commercialization 
capabilities of the collaboration partner and the availability of the associated expertise in the general marketplace. In 
addition, we consider whether the collaboration partner can use the other deliverable(s) for their intended purpose 
without the receipt of the remaining element(s), whether the value of the deliverable is dependent on the undelivered 

91 

item(s) and whether there are other vendors that can provide the undelivered element(s). Our collaboration agreements 
with Alexion and Roche do not contain a general right of return relative to the delivered item(s).   

Arrangement consideration that is fixed or determinable is allocated among the separate units of accounting 

using the relative selling price method. Then, the applicable revenue recognition criteria in ASC 605-25 are applied to 
each of the separate units of accounting in determining the appropriate period and pattern of recognition. We determine 
the selling price of a unit of accounting following the hierarchy of evidence prescribed by ASC 605-25. Accordingly, we 
determine the estimated selling price for units of accounting within each arrangement using vendor-specific objective 
evidence, or VSOE, of selling price, if available, third-party evidence, or TPE, of selling price if VSOE is not available, 
or best estimate of selling price, or BESP, if neither VSOE nor TPE is available. We typically use BESP to estimate the 
selling price, since it generally does not have VSOE or TPE of selling price for its units of accounting. Determining the 
BESP for a unit of accounting requires significant judgment. In developing the BESP for a unit of accounting, we 
consider applicable market conditions and relevant entity-specific factors, including factors that were contemplated in 
negotiating the agreement with the customer and estimated costs. We validate the BESP for units of accounting by 
evaluating whether changes in the key assumptions used to determine the BESP will have a significant effect on the 
allocation of arrangement consideration between multiple units of accounting. 

In the event that an element of a multiple element arrangement does not represent a separate unit of accounting, 

we recognize revenue from the combined element over the period over which we expect to fulfill its performance 
obligations or as undelivered items are delivered, as appropriate, if all of the other revenue recognition criteria in ASC 
605-25 are met. If the pattern of performance in which the service is provided to the customer can be determined and 
objectively measurable performance measures exist, then we recognize revenue under the arrangement using the 
proportional performance method. If there is no discernible pattern of performance and/or objectively measurable 
performance measures do not exist, then we recognize revenue under the arrangement on a straight-line basis over the 
period we are expected to complete our performance obligations. Revenue recognized is limited to the lesser of the 
cumulative amount of payments received or the cumulative amount of revenue earned, as determined using the straight-
line method or proportional performance method, as applicable, as of the period ending date. 

Our multiple-element revenue arrangements may include the following: 

Exclusive Licenses   

The deliverables under our collaboration agreements may include exclusive licenses to research, develop, 

manufacture and commercialize licensed products. To account for this element of an arrangement, management 
evaluates whether an exclusive license has stand-alone value from the undelivered elements based on the consideration 
of the relevant facts and circumstances of the arrangement, including the research and development capabilities of the 
collaboration partner. We may recognize the arrangement consideration allocated to licenses upon delivery of the license 
if facts and circumstances indicate that the license has stand-alone value from the undelivered elements, which generally 
include research and development services. We defer arrangement consideration allocated to licenses if facts and 
circumstances indicate that the delivered license does not have stand-alone value from the undelivered elements. 

When management believes a license does not have stand-alone value from the other deliverables to be 
provided in the arrangement, we recognize revenue attributed to the license on a proportional basis over our contractual 
or estimated performance period, which is typically the term of our research and development obligations. If 
management cannot reasonably estimate when our performance obligation ends, then revenue is deferred until 
management can reasonably estimate when the performance obligation ends. The periods over which revenue should be 
recognized are subject to estimates by management and may change over the course of the research and development 
and licensing agreement. Such a change could have a material impact on the amount of revenue we record in future 
periods. 

92 

Research and Development Services 

The deliverables under our collaboration agreements may include research and development services to be 
performed by us on behalf of the partner. Payments or reimbursements resulting from our research and development 
efforts are recognized as the services are performed and presented on a gross basis because we are the principal for such 
efforts, so long as there is persuasive evidence of an arrangement, the fee is fixed or determinable, and collection of the 
related amount is reasonably assured. 

Milestone Revenue 

Our collaboration agreements may include contingent milestone payments related to specified pre-clinical 

milestones, development milestones and sales-based commercial milestones.   

At the inception of an arrangement that includes milestone payments, we evaluate whether each milestone is 

substantive and at risk to both parties on the basis of the contingent nature of the milestone. This evaluation includes an 
assessment of whether:   

• 

• 

• 

the consideration is commensurate with either our performance to achieve the milestone or the 
enhancement of the value of the delivered item(s) as a result of a specific outcome resulting from the 
our performance to achieve the milestone; 

the consideration relates solely to past performance; and 

the consideration is reasonable relative to all of the deliverables and payment terms within the 
arrangement. 

We evaluate factors such as the scientific, clinical, regulatory, commercial and other risks that must be 

overcome to achieve the respective milestone and the level of effort and investment required to achieve the respective 
milestone in making this assessment. There is considerable judgment involved in determining whether a milestone 
satisfies all of the criteria required to conclude that a milestone is substantive. Milestones that are not considered 
substantive are accounted for as license payments and recognized over the remaining period of performance from the 
date of achievement of the milestone. Milestones that are considered substantive will be recognized in their entirety upon 
successful accomplishment of the milestone, assuming all other revenue recognition criteria are met.   

Royalty Revenue 

We will recognize royalty revenue in the period of sale of the related product(s), based on the underlying 

contract terms, provided that the reported sales are reliably measurable, and we have no remaining performance 
obligations, assuming all other revenue recognition criteria are met. 

Accrued Research and Development Expenses 

As part of the process of preparing our consolidated financial statements, we are required to estimate our 

accrued expenses as of each balance sheet date. This process involves reviewing open contracts and purchase orders, 
communicating with our personnel to identify 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. 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 as of each balance sheet date based on 
facts and circumstances known to us at that time. 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 the costs incurred for services performed by our vendors in connection with research and development 
activities for which we have not yet been invoiced. 

We base our expenses related to research and development activities on our estimates of the services received 

and efforts expended pursuant to quotes and contracts with vendors that conduct research and development 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. There may be instances in which payments made to our vendors will exceed the level of 

93 

services provided and result in a prepayment of the research and development expense. In accruing service fees, 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 the accrual or 
prepaid accordingly. Non-refundable advance payments for goods and services that will be used in future research and 
development activities are expensed when the activity has been performed or when the goods have been received rather 
than when the payment is made. 

Although we do 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 expense the fair value of employee stock awards, net of estimated forfeitures, adjusted to reflect actual 

forfeitures, over the requisite service period, which is typically the vesting period. Compensation cost for restricted stock 
awards issued to employees is measured using the grant date intrinsic value of the award, net of estimated forfeitures, 
and is adjusted to reflect actual forfeitures. We estimate the fair value of options granted to employees at the date of 
grant using the Black-Scholes option-pricing model that requires management to apply judgment and make estimates, 
including: 

• 

• 

• 

• 

• 

expected volatility, which is calculated based on reported volatility data for a representative group of 
publicly traded companies for which historical information is available. Prior to April 30, 2015, we 
were a privately-held company and lacked company-specific historical and implied volatility 
information. As such, we have used an average of expected volatility based on the volatilities of a 
representative group of publicly traded biopharmaceutical companies for a period equal to the 
expected term of the option grant. Beginning in the fourth quarter of 2015, we began to include our 
own volatility into the average calculation. We intend to consistently apply this process using the same 
representative companies until a sufficient amount of historical information regarding the volatility of 
our own share price becomes available or until circumstances change, such that the identified entities 
are no longer representative companies. In the latter case, more suitable, similar entities whose share 
prices are publicly available would be utilized in the calculation; 

risk-free interest rate, which is based on the U.S. Treasury yield curve in effect at the time of grant 
commensurate with the expected life assumption; 

expected term, which we calculate using the simplified method, as prescribed by the Securities and 
Exchange Commission Staff Accounting Bulletin No. 107, Share-Based Payment, as we have 
insufficient historical information regarding our stock options to provide a basis for an estimate; 

prior to becoming a public company, fair value estimates of the underlying shares of common stock, 
which were determined using the option-pricing method, or OPM, or a hybrid of the 
probability-weighted expected return method and the OPM and were approved by our board of 
directors. Upon becoming a public company, the fair value of the underlying shares of common stock 
equals the closing price of our stock on The NASDAQ Global Select Market on the date of grant; and 

dividend yield, which is zero based on the fact that we never paid cash dividends and do not expect to 
pay any cash dividends in the foreseeable future. 

94 

We have computed the fair value of stock options at the date of grant using the following weighted-average 

assumptions:     

Year Ended   

Risk-free interest rate 
Expected dividend yield 
Expected term (years) 
Expected stock price volatility 

  December 31, 2016  December 31, 2015   December 31, 2014  
  1.92 %
  — %
  6.1  
  92.99 %

  1.55 %   
  — %   
  6.0  
  75.94 %   

  1.66 % 
  — % 
  6.0  
  85.43 % 

Stock-based awards issued to non-employees, including directors for non-board related services, are accounted 

for based on the fair value of such services received or of the intrinsic value of equity instruments issued, whichever is 
more reliably measured. These stock-based awards are revalued at each vesting date and period-end. Stock-based awards 
subject to service-based vesting conditions are expensed on a straight-line basis over the vesting period. In accordance 
with the Accounting Standards Codification, or ASC, 718, stock-based awards subject to both performance-and 
service-based vesting conditions are recognized using an accelerated attribution model. 

The amount of stock-based compensation expense recognized during a period is based on the value of the 

portion of the awards that are expected to vest. Forfeitures are estimated at the time of grant and revised, if necessary, in 
subsequent periods if actual forfeitures differ from those estimates. The term “forfeitures” is distinct from 
“cancellations” or “expirations” and represents only the unvested portion of the surrendered option. We evaluate our 
forfeiture rate at each reporting period. Ultimately, the actual expense recognized over the vesting period will be for only 
those options that vest. 

JOBS Act 

In April 2012, the Jumpstart Our Business Startups Act of 2012, or the JOBS Act, was enacted. Section 107 of 

the JOBS Act provides that an “emerging growth company,” or EGC, can take advantage of the extended transition 
period provided in Section 7(a)(2)(B) of the Securities Act of 1933, as amended, or the Securities Act, for complying 
with new or revised accounting standards. Thus, an EGC can delay the adoption of certain accounting standards until 
those standards would otherwise apply to private companies. We have irrevocably elected not to avail ourselves of this 
extended transition period and, as a result, we will adopt new or revised accounting standards on the relevant dates on 
which adoption of such standards is required for other public companies. 

Subject to certain conditions, as an EGC, we intend to rely on certain exemptions and reduced reporting 
requirements available under the JOBS Act, including without limitation, (i) providing an auditor’s attestation report on 
our system of internal controls over financial reporting pursuant to Section 404(b) of the Sarbanes-Oxley Act and (ii) 
complying with any requirement that may be adopted by the Public Company Accounting Oversight Board, or PCAOB, 
regarding mandatory audit firm rotation or a supplement to the auditor’s report providing additional information about 
the audit and the financial statements, known as the auditor discussion and analysis. We will remain an EGC until the 
earlier of (i) December 31, 2020; (ii) the last day of the fiscal year in which we have total annual gross revenues of $1 
billion or more; (iii) the date on which we have issued more than $1 billion in nonconvertible debt during the previous 
three years; or (iv) the date on which we are deemed to be a large accelerated filer under the rules of the Securities and 
Exchange Commission.   

95 

 
 
 
 
 
 
 
 
 
 
 
 
    
  
  
  
Results of Operations 

Comparison of Years Ended December 31, 2016 and 2015 

The following table summarizes our results of operations for the years ended December 31, 2016 and 2015, 

together with the changes in those items in dollars and as a percentage: 

Collaboration revenue 
Operating expenses: 

Research and development 
General and administrative 

Total operating expenses 
Other income (expense): 
Other income, net 
Interest expense 

Total other income (expense) 
Net loss 

Collaboration Revenue 

Year Ended 
December 31,  

2016 

2015 

    Dollar Change      % Change  

(in thousands) 

  $    27,772   $    11,400   $ 

  16,372  

  144 %

     81,131  
     19,218  

     48,588  
     14,456  

  32,543   
  4,762   

  67  
  33  

100,349  

     63,044  

  37,305   

  59  

  551  
  (469)  
  82  

  980   
  227   
  1,207   
  $   (72,495)   $   (52,769)  $    (19,726)  

  (429) 
  (696) 
  (1,125) 

  (228) 
  33  
  107  
  (37)%

Collaboration revenue increased by $16.4 million from $11.4 million for the year ended December 31, 2015 to 
$27.8 million for the year ended December 31, 2016. Collaboration revenue for the year ended December 31, 2016 was 
related to the Alexion and Roche agreements. Collaboration revenue under the Alexion agreement began in March 2015 
upon the execution of the Alexion agreement, and we recorded $23.3 million in collaboration revenue under the Alexion 
agreement for the year ended December 31, 2016. The increase in collaboration revenue from the year ended December 
31, 2015 under the Alexion agreement of $11.9 million was primarily related to increased reimbursable research and 
development costs, increased recognition of portions of the $15.0 million upfront payment and $1.8 million in milestone 
payments received from Alexion and increased milestone payments recognized upon achievement during the year ended 
December 31, 2016. We entered into the Roche agreement in March 2016 and recorded $4.5 million in collaboration 
revenue under the Roche agreement for the year ended December 31, 2016. 

Research and Development Expense 

Research and development expense increased by $32.5 million from $48.6 million for the year ended December 
31, 2015 to $81.1 million for the year ended December 31, 2016. The increase in research and development expense was 
primarily related to the following: 

• 

• 

• 

• 

• 

approximately $10.3 million in increased expenses for external clinical activities as we advanced two 
of our lead drug candidates, BLU-285 and BLU-554, in Phase 1 clinical trials; 

approximately $9.5 million in increased expenses associated with clinical manufacturing activities;   

approximately $6.5 million in increased personnel expense primarily due to a 33% increase in 
headcount, which was primarily driven by growth in the clinical and non-clinical organizations as we 
advanced two of our lead drug candidates, BLU-285 and BLU-554, in Phase 1 clinical trials, including 
an increase in stock-based compensation expense;   

approximately $4.4 million in increased expenses associated with continuing to build our discovery 
platform and advance our discovery pipeline, including expenses related to the Alexion agreement; and   

approximately $1.8 million in increased expenses associated with IND-enabling pre-clinical 
toxicology studies, primarily related to BLU-667 and the Alexion agreement. 

96 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
  
 
     
    
 
 
  
 
   
 
   
 
 
 
 
 
 
 
  
 
  
 
  
 
  
 
   
 
   
 
 
 
 
 
 
 
  
  
  
 
  
  
  
 
  
  
  
 
General and Administrative Expense 

General and administrative expense increased by $4.7 million from $14.5 million for the year ended December 

31, 2015 to $19.2 million for the year ended December 31, 2016. The increase in general and administrative expense was 
primarily related to the following: 

• 

• 

approximately $2.7 million in increased personnel expenses primarily due to an increase of 57% in 
general and administrative headcount to support our overall growth as a publicly traded company, 
including an increase in stock-based compensation expense; and 

approximately $1.6 million in increased professional fees, including external legal fees, insurance 
premiums and market research expenses. 

Other Income (Expense), Net 

Other income (expense), net, increased by $1.0 million from $0.4 million of expense for the year ended 

December 31, 2015 to $0.6 million of income for the year ended December 31, 2016. The increase in other income 
(expense), net, was primarily related to an increase in investment income during the year ended December 31, 2016 due 
to our investing in marketable securities beginning in 2016. Also contributing to the increase in other income (expense) 
was the impact of the re-measurement associated with the change in the fair value of the convertible preferred stock 
warrant liability included in the year ended December 31, 2015. Upon the closing of our IPO, all outstanding warrants 
exercisable for convertible preferred stock were automatically converted into warrants exercisable for shares of common 
stock, and we reclassified the warrants as an equity instrument. Accordingly, there were no related fair value adjustments 
in 2016. 

Interest Expense 

Interest expense decreased by $0.2 million from $0.7 million for the year ended December 31, 2015 to 

$0.5 million for the year ended December 31, 2016. The decrease was primarily related to a decrease in the average 
outstanding principle balance for the year ended December 31, 2016 under the loan and security agreement with Silicon 
Valley Bank. We expect that interest expense will continue to decrease in subsequent periods as the principal amount 
under the loan decreases.   

97 

Comparison of Years Ended December 31, 2015 and 2014 

The following table summarizes our results of operations for the years ended December 31, 2015 and 2014, 

together with the changes in those items in dollars and as a percentage:     

Collaboration revenue 
Operating expenses: 

Research and development 
General and administrative 

Total operating expenses 
Other income (expense): 

Other income (expense), net 
Interest expense 

Total other income (expense) 
Net loss 

Collaboration Revenue 

Year Ended   
December 31,  

2015 

2014 

     Dollar Change      % Change   

  $    11,400   $ 

(in thousands) 
  —   $ 

  11,400  

  100 % 

  48,588  
  14,456  
  63,044  

  31,844  
  7,890  
  39,734  

  16,744   
  6,566   
  23,310   

  53  
  83  
  59  

  (429)  
  (696)  
  (1,125)  

  (98) 
  (453) 
  (551) 

  $   (52,769)   $   (40,285)  $ 

  (331)  
  (243)  
  (574)  
  (12,484)  

  (338) 
  (54) 
  (104) 
  (31)% 

Collaboration revenue was $11.4 million for the year ended December 31, 2015 under the Alexion agreement. 

We did not record any collaboration revenue during the year ended December 31, 2014. 

Research and Development Expense 

Research and development expense increased by $16.7 million from $31.8 million for the year ended December 
31, 2014 to $48.6 million for the year ended December 31, 2015. The increase in research and development expense was 
primarily related to the following: 

• 

• 

• 

approximately $6.0 million in increased personnel expense primarily due to a 49% increase in 
headcount, largely driven by growth in the clinical and non-clinical organizations as we advanced two 
of our lead drug candidates, BLU-285 and BLU-554, into clinical trials, as well as higher stock-based 
compensation expense; 

approximately $6.0 million in external clinical activities as we advanced two of our lead drug 
candidates, BLU-285 and BLU-554, into clinical trials; and 

approximately $5.4 million as we continued to build our discovery platform and advance our discovery 
pipeline forward, including expenses associated with development of BLU-667 and expenses related to 
the Alexion agreement. 

These increases were partially offset by $0.7 million of lower external IND-enabling pre-clinical and toxicology 

studies as well as manufacturing activities primarily due to timing associated with toxicology studies for BLU-285 and 
BLU-554 during the year ended December 31, 2014.   

98 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
  
 
     
     
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
   
 
   
 
 
 
 
 
 
 
 
 
 
 
  
  
  
 
  
  
  
 
   
 
   
 
 
 
 
 
 
 
  
  
  
 
  
  
  
 
  
  
  
General and Administrative Expense 

General and administrative expense increased by $6.6 million from $7.9 million for the year ended December 

31, 2014 to $14.5 million for the year ended December 31, 2015. The increase in general and administrative expense was 
primarily related to the following: 

• 

• 

approximately $3.5 million in increased personnel expenses primarily due to an increase of 113% in 
general and administrative headcount to support our overall growth as a publicly traded company as 
well as an increase in stock-based compensation expense; and 

approximately $2.5 million increase in professional fees, including external legal and audit fees, 
insurance premiums, public relations fees and recruiting costs and fees paid to members of our board 
of directors. 

Other Income (Expense), Net 

Other income (expense), net, increased by $0.3 million from $0.1 million for the year ended December 31, 

2014 to $0.4 million for the year ended December 31, 2015. The increase in other income (expense), net, was primarily 
related to the impact of the re-measurement associated with the change in the fair value of the convertible preferred stock 
warrant liability. 

Interest Expense 

Interest expense increased by $0.2 million from $0.5 million for the year ended December 31, 2014 to 

$0.7 million for the year ended December 31, 2015. The increase in interest expense was primarily related to a higher 
outstanding principal balance under the loan and security agreement with Silicon Valley Bank for the year ended 
December 31, 2015. 

Liquidity and Capital Resources 

Sources of Liquidity 

To date, we have financed our operations primarily through public offerings of our common stock, private 
placements of our convertible preferred stock, collaborations and a debt financing. Through December 31, 2016, we 
have received an aggregate of $501.3 million from such transactions, including $312.4 million in aggregate gross 
proceeds from the sale of common stock in our May 2015 IPO and December 2016 follow-on underwritten public 
offering, $115.1 million in gross proceeds from the issuance of convertible preferred stock, $18.8 million of upfront and 
milestone payments from Alexion, a $45.0 million upfront payment from Roche and $10.0 million in gross proceeds 
from the debt financing. 

As of December 31, 2016, we had cash, cash equivalents and investments of $268.2 million. 

Cash Flows 

The following table provides information regarding our cash flows for the years ended December 31, 2016, 

2015 and 2014: 

(in thousands) 
Net cash used in operating activities 
Net cash used in investing activities 
Net cash provided by financing activities 
Net (decrease) increase in cash and cash equivalents 

Year Ended   
December 31,  
2015 

2016 

2014 

  $    (24,513)  $   (31,676) $   (35,400) 
  (700) 
     81,353  
  $   (110,638)  $   115,467  $    45,253  

    (218,702) 
     132,577  

    153,222 

  (6,079)   

Net Cash Used in Operating Activities. Net cash used in operating activities was $24.5 million during the year 

ended December 31, 2016 compared to net cash used in operating activities of $31.7 million during year ended 
December 31, 2015. The decrease in net cash used in operating activities was primarily due to changes in deferred 

99 

 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
  
    
    
 
  
 
  
 
 
revenue related to the timing and amount of upfront payments from Alexion and Roche, partially offset by an increase in 
net loss of $19.7 million for the year end December 31, 2016 as compared to the year ended December 31, 2015. In the 
year ended December 31, 2016, we received a $45.0 million upfront payment from Roche, and in the year ended 
December 31, 2015, we received a $15.0 million upfront payment from Alexion.   

Net cash used in operating activities was $31.7 million during the year ended December 31, 2015 compared to 

net cash used in operating activities of $35.4 million during year ended December 31, 2014. The decrease in cash used in 
operating activities was primarily due to the receipt of a $15.0 million upfront payment from Alexion, partially offset by 
an increase in net loss of $12.5 million for the year end December 31, 2015 as compared to the year ended December 31, 
2014. 

Net Cash Used in Investing Activities. Net cash used in investing activities was $218.7 million during the year 

ended December 31, 2016 compared to net cash used in investing activities of $6.1 million during the year ended 
December 31, 2015. Net cash used in investing activities for the year ended December 31, 2016 consisted primarily of 
purchases and maturities of investments. We classify these investments as available-for-sale and record them at fair 
value in the accompanying condensed consolidated balance sheets. Net cash used in investing activities for the year 
ended December 31, 2015 consisted primarily of purchases of property and equipment. 

Net cash used in investing activities was $6.1 million during the year ended December 31, 2015 compared to 

net cash used in investing activities of $0.7 million during the year ended December 31, 2014. Net cash used in investing 
activities for the year ended December 31, 2015 consisted of purchases of property and equipment as well as a security 
deposit payment for our new office lease agreement. Net cash used in investing activities for the year ended December 
31, 2014 consisted of purchases of property and equipment. 

Net Cash Provided by Financing Activities. Net cash provided by financing activities was $132.6 million during 

the year ended December 31, 2016 compared to net cash provided by financing activities of $153.2 million during the 
year ended December 31, 2015. Net cash provided by financing activities for the year ended December 31, 2016 was 
primarily due to $135.0 million in net proceeds from our December 2016 follow-on underwritten public offering, after 
deducting underwriting discounts and commissions and estimated offering expenses payable by us, partially offset by 
$3.3 million of principal payments on term loan payable. Net cash provided by financing activities for the year ended 
December 31, 2015 was primarily due to $154.8 million of net proceeds from our IPO, after deducting underwriting 
discounts and commissions and offering expenses payable by us, partially offset by $1.8 million of principal payments 
on term loan payable. 

Net cash provided by financing activities was $153.2 million during the year ended December 31, 2015 

compared to net cash provided by financing activities of $81.4 million during the year ended December 31, 2014. Net 
cash provided by financing activities for the year ended December 31, 2015 was primarily due to $154.8 million in net 
proceeds from our IPO, after deducting underwriting discounts and commissions and offering expenses payable by us, 
partially offset by $1.8 million of principal payments on term loan payable. The cash provided by financing activities for 
the year ended December 31, 2014 was primarily due to $74.9 million of net proceeds received from the private 
placement of our Series B and Series C convertible preferred stock and $6.3 million of proceeds from our term loan, net 
of principal payments. 

Borrowings 

In May 2013, we entered into the loan and security agreement with Silicon Valley Bank. Under the terms of the 
loan and security agreement, we borrowed $5.0 million. Loan advances accrue interest at a fixed rate of 2.0% above the 
prime rate. In November 2014, we amended the loan and security agreement and borrowed an additional $5.0 million. 
Each loan advance included an interest only payment period. During 2014, we paid principal payments of $0.7 million 
on the first $3.0 million of advances. During the year ended December 31, 2015, we paid principal payments of $1.8 
million on the first $10.0 million of advances and during the year ended December 31, 2016, we paid principal payments 
of $3.3 million. We are required to pay a fee of 4% of the total loan advances at the end of the term of the loan. There 
are no financial covenants associated with the loan and security agreement. As of December 31, 2016, we had $4.1 
million in outstanding principal under the loan and security agreement. 

The term loan is collateralized by a blanket lien on all corporate assets, excluding intellectual property, and by a 

negative pledge of our intellectual property. The term loan contains covenants, including restrictions on dividends and 

100 

default provisions. We have determined that the risk of subjective acceleration under the material adverse events clause 
is remote and therefore has classified the outstanding principal in current and long term liabilities based on scheduled 
principal payments. 

See Note 9, “Term Loan,” in the accompanying notes to our audited consolidated financial statements for 

additional information. 

Funding Requirements 

We expect our expenses to increase in connection with our ongoing activities, particularly as we continue the 

research and development of, continue and initiate clinical trials of, and seek marketing approval for, our drug 
candidates. In addition, if we obtain marketing approval for any of our drug candidates, we expect to incur significant 
commercialization expenses related to drug sales, marketing, manufacturing and distribution to the extent that such sales, 
marketing and distribution are not the responsibility of potential collaborators. Furthermore, we expect to continue to 
incur additional costs associated with operating as a public company. Accordingly, we will need to obtain substantial 
additional funding in connection with our continuing operations. If we are unable to raise capital when needed or on 
attractive terms, we would be forced to delay, reduce or eliminate our research and development programs or future 
commercialization efforts. 

As of December 31, 2016, we had cash, cash equivalents and investments of $268.2 million. Based on our 

current plans, we expect that our existing cash, cash equivalents and investments, excluding any potential option fees 
and milestone payments under our existing collaborations, will be sufficient to enable us to fund our operating expenses 
and capital expenditure requirements into at least late 2018. Our future capital requirements will depend on many 
factors, including: 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

the scope, progress, results and costs of drug discovery, pre-clinical development, laboratory testing 
and clinical trials for our drug candidates; 

the costs of producing drug substance and drug product material for use in pre-clinical studies, clinical 
trials and for use as commercial supply; 

the scope, prioritization and number of our research and development programs; 

the success of our collaborations with Alexion and Roche; 

the success of our current or future companion diagnostic test collaborations, including our companion 
diagnostic test with Ventana for BLU-554 and our companion diagnostic test with Qiagen for BLU-
285; 

the costs, timing and outcome of regulatory review of our drug candidates; 

our ability to establish and maintain collaborations on favorable terms, if at all; 

the achievement of milestones or occurrence of other developments that trigger payments under any 
collaboration agreements we obtain; 

the extent to which we are obligated to reimburse, or entitled to reimbursement of, clinical trial costs 
under future collaboration agreements, if any; 

the costs of preparing, filing and prosecuting patent applications, maintaining and enforcing our 
intellectual property rights and defending intellectual property-related claims; 

the extent to which we acquire or in-license other drug candidates and technologies; 

the costs of securing manufacturing arrangements for development activities and commercial 
production; and 

101 

• 

the costs of establishing or contracting for sales and marketing capabilities if we obtain regulatory 
approvals to market our drug candidates. 

Identifying potential drug candidates and conducting pre-clinical studies and clinical trials is a time-consuming, 

expensive and uncertain process that takes many years to complete, and we may never generate the necessary data or 
results required to obtain marketing approval and achieve drug sales. In addition, our drug candidates, if approved, may 
not achieve commercial success. Our commercial revenues, if any, will be derived from sales of drugs that we do not 
expect to be commercially available for many years, if at all. 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. 

Until such time, if ever, as we can generate substantial drug revenues, we expect to finance our cash needs 

through a combination of equity offerings, debt financings, collaborations, strategic alliances and licensing 
arrangements. At this time, we do not have any committed external source of funds outside of those to be earned in 
connection with our agreements with Alexion and Roche. 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, 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 funds through additional collaborations, strategic alliances or licensing arrangements with third 

parties, we may have to relinquish valuable rights to our technologies, future revenue streams, research programs or drug 
candidates or to grant licenses 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 drug 
development or future commercialization efforts or grant rights to develop and market drug candidates that we would 
otherwise prefer to develop and market ourselves. 

Contractual Obligations 

The following table summarizes our significant contractual obligations as of payment due date by period at 

December 31, 2016: 

Payments Due by Period 

(in thousands) 
Operating lease commitments (1) $ 
Debt repayments (2) 
Total 

$ 

Total 
  15,024  $ 
  4,302   
  19,326  $ 

   Less than 1 Year   1 to 3 Years      3 to 5 Years     More than 5 Years  
  2,303  
  -  
  2,303  

  5,010  $ 
  1,568   
  6,578  $ 

  2,396  $ 
  2,734   
  5,130  $ 

  5,315  $ 

  5,315  $ 

  -   

(1)  Represents future minimum lease payments under our non-cancelable operating lease, which expires in October 2022, for our offices 

located at 38 Sidney Street, Cambridge, MA. The minimum lease payments above do not include any related common area 
maintenance charges or real estate taxes. 

(2)  Consists of payment obligations for principal and interest under the loan and security agreement with Silicon Valley Bank. As of 

December 31, 2016, we had $4.1 million in outstanding principal under the loan and security agreement with Silicon Valley Bank. 

We enter into agreements in the normal course of business with contract research organizations for clinical 

trials and clinical supply manufacturing and with vendors for pre-clinical research studies, synthetic chemistry and other 
services and products for operating purposes. We have not included these payments in the table of contractual 
obligations above since the contracts are generally cancelable at any time by us upon less than 180 days’ prior written 
notice. Certain of these agreements require us to pay milestones to such third parties upon achievement of certain 
development, regulatory or commercial milestones. Amounts related to contingent milestone payments are not 
considered contractual obligations as they are contingent on the successful achievement of certain development, 
regulatory approval and commercial milestones, which may not be achieved.   

We also have obligations to make future payments to third parties that become due and payable on the 
achievement of certain milestones. We have not included these commitments on our balance sheet or in the table above 

102 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
because the achievement and timing of these milestones is not fixed and determinable. These commitments include the 
following: 

• 

• 

In March 2016, we entered into the Ventana agreement pursuant to which Ventana has agreed to 
develop and commercialize the companion diagnostic for BLU-554 that we expect to use to identify 
HCC patients with aberrantly active FGFR4 signaling as indicated by FGF19 overexpression. Subject 
to the terms of the Ventana agreement, we will pay Ventana an aggregate amount of up to 
approximately $12.3 million over the term of the development program for the companion diagnostic 
test for BLU-554 plus pass-through costs and certain other specified amounts. See “Item 1. Business—
Collaborations and Partnerships—Ventana” of this Annual Report on Form 10-K for additional 
information on the Ventana agreement. 

In August 2016, we entered into the Qiagen agreement pursuant to which Qiagen has agreed to 
develop and commercialize the companion diagnostic for BLU-285 that we expect to use to identify 
GIST patients with the PDGFRα D842V mutation. Subject to the terms of the Qiagen agreement and 
upon achievement of specified technical and development milestones, we will pay QIAGEN an 
aggregate amount of up to approximately $6.1 million over the term of the development program for 
the companion diagnostic test for BLU-285 plus pass-through costs. These amounts are subject to 
adjustment if the parties determine that changes in the scope of the development program are required. 
See “Item 1. Business—Collaborations and Partnerships—Qiagen” of this Annual Report on Form 10-
K for additional information on the Qiagen agreement. 

Off-Balance Sheet Arrangements 

We did not have, during the periods presented, and we do not currently have, any off-balance sheet 

arrangements, as defined under applicable SEC rules. 

Item 7A. Quantitative and Qualitative Disclosures About Market Risk. 

As of December 31, 2016 and 2015, respectively, we had cash, cash equivalents and investments of $268.2 

million and $162.7 million, consisting primarily of money market funds and investments in U.S. treasury obligations. 

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 are in short-term marketable securities. Due to the short-term 
duration of our investment portfolio and the low risk profile of our investments, we believe an immediate 10% change in 
interest rates would not have a material effect on the fair market value of our investment portfolio. We have the ability to 
hold our investments until maturity, and therefore, we would not expect our operating results or cash flows to be affected 
to any significant degree by the effect of a change in market interest rates on our investment portfolio. 

We are also exposed to market risk related to changes in foreign currency exchange rates. From time to time, 

we contract with vendors that are located Asia and Europe, which are denominated in foreign currencies. We are subject 
to fluctuations in foreign currency rates in connection with these agreements. We do not currently hedge our foreign 
currency exchange rate risk. As of December 31, 2016 and December 31, 2015, we had minimal or no liabilities 
denominated in foreign currencies. 

Inflation generally affects us by increasing our cost of labor and clinical trial costs. We do not believe that 

inflation had a material effect on our business, financial condition or results of operations during the years ended 
December 31, 2016 and 2015. 

Item 8. Financial Statements and Supplementary Data. 

The financial statements required to be filed pursuant to this Item 8 are appended to this Annual Report on 

Form 10-K. An index of those financial statements is found in Item 15 of this Annual Report on Form 10-K. 

Item 9. Change in and Disagreements with Accountants on Accounting and Financial Disclosure. 

None. 

103 

 
Item 9A. Controls and Procedures 

Management’s Evaluation of our Disclosure Controls and Procedures   

We maintain “disclosure controls and procedures,” as defined in Rules 13a-15(e) and 15d-15(e) under the 
Securities Exchange Act of 1934, as amended, or the Exchange Act, that are designed to ensure that information required 
to be disclosed in the reports that we file or submit under the Exchange Act is (1) recorded, processed, summarized and 
reported, within the time periods specified in the Securities and Exchange Commission’s rules and forms and (2) 
accumulated and communicated to our management, including our principal executive and principal financial officer, as 
appropriate to allow timely decisions regarding required disclosure. Our management recognizes that any controls and 
procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving their 
objectives and our management necessarily applies its judgment in evaluating the cost-benefit relationship of possible 
controls and procedures. Our disclosure controls and procedures are designed to provide reasonable assurance of 
achieving their control objectives.   

Our management, with the participation of our Chief Executive Officer and Vice President of Finance (our 
principal executive officer and principal financial officer, respectively), evaluated the effectiveness of our disclosure 
controls and procedures as of December 31, 2016. Based upon such evaluation, our Chief Executive Officer and Vice 
President of Finance have concluded that, as of December 31, 2016, 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. Internal control over financial reporting is defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act 
as a process designed by, or under the supervision of, a company’s principal executive officer and principal financial 
officer, or persons performing similar functions, and effected by a company’s board of directors, management, and other 
personnel, 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 and includes those policies 
and procedures that:   

• 

• 

• 

pertain to the maintenance of records that in reasonable detail accurately and fairly reflect the transactions 
and dispositions of a company’s assets;   

provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial 
statements in accordance with generally accepted accounting principles, and that a company’s receipts and 
expenditures are being made only in accordance with authorizations of the company’s management and 
directors; and 

provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or 
disposition of our 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. 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.   

Under the supervision of and with the participation of our principal executive officer and principal financial 
officer, our management assessed the effectiveness of our internal control over financial reporting as of December 31, 
2016 based on the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission 
(COSO) in Internal Control—Integrated Framework (2013 framework). Based on this assessment, management 
concluded that our internal control over financial reporting was effective as of December 31, 2016. 

104 

Changes in Internal Control over Financial Reporting   

No change in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under 

the Exchange Act) occurred during the three months ended December 31, 2016 that has materially affected, or is 
reasonably likely to materially affect, our internal control over financial reporting. 

Item 9B. Other Information 

None.   

Item 10. Directors, Executive Officers and Corporate Governance. 

PART III 

The information required by this Item 10 will be included in our definitive proxy statement to be filed with the 

SEC with respect to our 2017 Annual Meeting of Stockholders and is incorporated herein by reference. 

Item 11. Executive Compensation. 

The information required by this Item 11 will be included in our definitive proxy statement to be filed with the 

SEC with respect to our 2017 Annual Meeting of Stockholders and is incorporated herein by reference. 

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

The information required by this Item 12 will be included in our definitive proxy statement to be filed with the 

SEC with respect to our 2017 Annual Meeting of Stockholders and is incorporated herein by reference. 

Item 13. Certain Relationships and Related Transactions, and Director Independence. 

The information required by this Item 13 will be included in our definitive proxy statement to be filed with the 

SEC with respect to our 2017 Annual Meeting of Stockholders and is incorporated herein by reference. 

Item 14. Principal Accounting Fees and Services. 

The information required by this Item 14 will be included in our definitive proxy statement to be filed with the 

SEC with respect to our 2017 Annual Meeting of Stockholders and is incorporated herein by reference. 

105 

 
 
 
Item 15. Exhibits and Financial Statement Schedules. 

(1)        Financial Statements 

PART IV 

The following documents are included on pages F-1 through F-27 attached hereto and are filed as part of this 

Annual Report on Form 10-K. 

Report of Independent Registered Public Accounting Firm 
Consolidated Balance Sheets as of December 31, 2016 and December 31, 2015 
Consolidated Statements of Operations and Comprehensive Loss for the years ended December 31, 2016, 2015 

and 2014 

Consolidated Statements of Convertible Preferred Stock and Stockholders’ (Deficit) Equity for the years ended 

December 31, 2016, 2015 and 2014 

Consolidated Statements of Cash Flows for the years ended December 31, 2016, 2015 and 2014 
Notes to Consolidated Financial Statements 

F-2
F-3
F-4

F-5

F-6
F-7

(2)        Financial Statement Schedules 

Schedules have been omitted since they are either not required or not applicable or the information is otherwise 

included herein. 

(3)        Exhibits 

The exhibits filed or furnished as part of this Annual Report on Form 10-K are listed in the Exhibit Index 

immediately preceding such Exhibits, which Exhibit Index is incorporated herein by reference. 

Item 16. Form 10-K Summary. 

Not applicable. 

106 

 
 
 
 
 
 
 
 
 
 
 
 
 
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has 

duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. 

SIGNATURES 

Date: March 9, 2017 

 BLUEPRINT MEDICINES CORPORATION 

 By: 

   /s/ Jeffrey W. Albers 
   Jeffrey W. Albers 
   President and Chief Executive Officer 

Pursuant to the requirements of the Securities Exchange 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. 

Signature 

Title 

Date 

/s/ Jeffrey W. Albers 
Jeffrey W. Albers 

/s/ Michael Landsittel 
Michael Landsittel 

/s/ Daniel S. Lynch 
Daniel S. Lynch 

/s/ Nicholas Lydon 
Nicholas Lydon, Ph.D. 

/s/ Alexis Borisy 
Alexis Borisy 

/s/ Mark Goldberg 
Mark Goldberg, M.D. 

/s/ Charles A. Rowland, Jr. 
Charles A. Rowland, Jr. 

/s/ George Demetri 
George Demetri, M.D. 

/s/ Lonnel Coats 
Lonnel Coats 

/s/ Lynn Seely 
Lynn Seely, M.D. 

President, Chief Executive Officer and Director 
(Principal Executive Officer) 

March 9, 2017 

Vice President of Finance 
(Principal Financial and Accounting Officer) 

March 9, 2017 

Chairman of the Board 

March 9, 2017 

March 9, 2017 

March 9, 2017 

March 9, 2017 

March 9, 2017 

March 9, 2017 

March 9, 2017 

March 9, 2017 

Director 

Director 

Director 

Director 

Director 

Director 

Director 

107 

 
 
 
 
 
 
 
 
 
 
  
 
  
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(This page has been left blank intentionally.)

Blueprint Medicines Corporation 

Index to Consolidated Financial Statements 

Report of Independent Registered Public Accounting Firm 
Consolidated Balance Sheets as of December 31, 2016 and December 31, 2015 
Consolidated Statements of Operations and Comprehensive Loss for the years ended December 31, 2016, 2015 
and 2014 
Consolidated Statements of Convertible Preferred Stock and Stockholders’ Equity (Deficit) for the years ended 
December 31, 2016, 2015 and 2014 
Consolidated Statements of Cash Flows for the years ended December 31, 2016, 2015 and 2014 
Notes to Consolidated Financial Statements 

F-2
F-3
F-4

F-5

F-6
F-7

F-1 

 
 
 
 
 
 
 
Report of Independent Registered Public Accounting Firm 

The Board of Directors and Stockholders of 
Blueprint Medicines Corporation 

We have audited the accompanying consolidated balance sheets of Blueprint Medicines Corporation as of December 31, 
2016 and 2015 and the related consolidated statements of operations and comprehensive loss, convertible preferred stock 
and stockholders’ equity (deficit), and cash flows for each of the three years in the period ended December 31, 2016. 
These financial statements are the responsibility of the Company’s management. Our responsibility is to express an 
opinion on these financial statements based on our audits. 

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United 
States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the 
financial statements are free of material misstatement. We were not engaged to perform an audit of the Company’s 
internal control over financial reporting. Our audits included consideration of internal control over financial reporting as 
a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an 
opinion on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we express no such 
opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the 
financial statements, assessing the accounting principles used and significant estimates made by management and 
evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our 
opinion. 

In our opinion, the financial statements referred to above present fairly, in all material respects, the consolidated 
financial position of Blueprint Medicines Corporation at December 31, 2016 and 2015, and the consolidated results of its 
operations and its cash flows for each of the three years in the period ended December 31, 2016, in conformity with U.S. 
generally accepted accounting principles. 

/s/ Ernst & Young LLP 

Boston, Massachusetts 
March 9, 2017 

F-2 

 
 
 
Blueprint Medicines Corporation 
Consolidated Balance Sheets 
(in thousands, except share and per share data) 

Assets 
Current assets: 

Cash and cash equivalents 
Investments, available-for-sale 
Restricted cash 
Unbilled accounts receivable 
Prepaid expenses and other current assets 

Total current assets 
Investments, available-for-sale 
Property and equipment, net 
Other assets 
Restricted cash 
Total assets 
Liabilities and stockholders’ equity 
Current liabilities: 

Accounts payable 
Accrued expenses 
Current portion of deferred revenue 
Current portion of lease incentive obligation 
Current portion of term loan payable 

Total current liabilities 
Deferred rent, net of current portion 
Deferred revenue, net of current portion 
Lease incentive obligation, net of current portion 
Term loan payable, net of current portion 
Other long term liabilities 
Commitments (Note 11) 
Stockholders’ equity: 
Preferred stock, $0.001 par value; 5,000,000 shares authorized; no shares issued and outstanding 
Common stock, $0.001 par value; 120,000,000 shares authorized; 33,125,479 and 27,196,053 shares issued at 
December 31, 2016 and December 31, 2015, respectively, and 33,123,354 and 27,065,558 shares outstanding at 
December 31, 2016 and December 31, 2015, respectively 
Additional paid-in capital 
Accumulated other comprehensive loss 
Accumulated deficit 
Total stockholders’ equity 
Total liabilities and stockholders’ equity 

  December 31,    December 31,   

2016 

2015 

  $ 

  $ 

  52,069    $ 
  162,090   
  —   
  3,577   
  2,689   
  220,425   
  54,059   
  6,188   
  856   
  1,267   
  282,795    $ 

  162,707   
  —   
  119   
  3,414   
  4,176   
  170,416   
  —   
  6,661   
  555   
  1,266   
  178,898   

  2,211   
  11,746   
  11,426   
  578   
  2,551   
  28,512   
  932   
  35,809   
  2,792   
  1,518   
  154   

  2,455   
  6,443   
  5,898   
  578   
  3,266   
  18,640   
  842   
  7,742   
  3,370   
  4,072   
  253   

  —   

  —   

  33   
  420,533   
  (18)  
  (207,470)  
  213,078   
  282,795    $ 

  27   
  278,927   
  —   
     (134,975) 
  143,979   
  178,898   

  $ 

F-3 

 
 
 
 
 
 
 
 
 
 
     
     
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
 
 
  
  
 
  
  
 
 
  
  
 
  
  
 
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
 
  
 
 
 
  
  
 
  
  
 
 
 
 
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
 
  
  
 
 
  
 
  
  
 
 
 
 
Blueprint Medicines Corporation 
Consolidated Statements of Operations and Comprehensive Loss 
(in thousands, except per share data) 

Year Ended   
December 31,  
2015 

2016 

2014 

  $    27,772   $    11,400 

 $ 

  —   

  81,131  
  19,218  
     100,349  

  48,588 
  14,456 
  63,044 

  31,844  
  7,890  
  39,734  

  551  
  (469) 
  82  

  (429)
  (696)
  (1,125)
  $   (72,495)  $   (52,769)

  (98) 
  (453) 
  (551) 
 $   (40,285) 

  (18) 

  — 
  $   (72,513)  $   (52,769)

  —  
 $   (40,285) 

  —  

  $   (72,495)  $   (52,769)
  (3,153)
  $   (72,495)  $   (55,922)
  (3.07)
  $ 

  (2.64)  $ 

 $   (40,285) 
  (5,765) 
 $   (46,050) 
 $    (32.41) 

  27,492  

  18,236 

  1,421  

Collaboration revenue 
Operating expenses: 

Research and development 
General and administrative 

Total operating expenses 
Other income (expense): 

Other income (expense), net 
Interest expense 

Total other income (expense) 
Net loss 
Other comprehensive loss: 

Unrealized loss on investments 

Comprehensive loss 
Reconciliation of net loss applicable to common stockholders: 
Net loss 
Convertible preferred stock dividends 
Net loss applicable to common stockholders 
Net loss per share applicable to common stockholders — basic and diluted 
Weighted-average number of common shares used in net loss per share 
applicable to common stockholders — basic and diluted 

F-4 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
    
     
  
 
   
 
   
 
   
 
 
 
 
  
 
  
  
  
 
  
  
 
   
 
   
 
   
 
 
  
  
  
 
  
  
  
 
  
  
  
 
 
 
 
  
 
 
 
 
  
 
 
 
 
  
 
 
  
  
  
 
  
  
  
 
 
Blueprint Medicines Corporation 
Consolidated Statements of Convertible Preferred Stock and Stockholders’ Equity (Deficit) 
(in thousands, except per share data) 

Series A 

Series B 

Series C 

Convertible 
Preferred Stock 

Convertible 
Preferred Stock 

Convertible 
Preferred Stock 

Shares 

     Amount      

Shares 

     Amount      

Shares 

     Amount       Shares 

     Amount      Capital      

Loss 

    Deficit 

  40,000,000    $   39,958   

  —    $

  —   

  —   

  —   

  20,916,663   

  24,985   

  —   

  —   

  —   

  1,221,330    $ 

  1    $

  466    $ 

  —    $ 

  (41,921)  $ 

  (41,454)  

  —   

  —   

  —   

  —   

  —   

  —   

Common Stock 

  Paid-in 

  Comprehensive   Accumulated  

  Stockholders’ 
(Deficit) 
Equity 

  Accumulated 

Additiona
l 

Other     

Balance at December 31, 2013 
Issuance of Series B convertible preferred stock at 
$1.20 per share, net of issuance costs of $115 
Issuance of Series C convertible preferred stock at 
$2.07 per share, net of issuance cost of $131 
Issuance of common stock under stock plan 
Stock based compensation expense 
Net loss 
Balance at December 31, 2014 
Conversion of preferred stock into common stock 
Initial public offering, net of issuance costs 
Reclassification of warrant 
Issuance of common stock upon warrant exercise 
Issuance of common stock under stock plan 
Stock based compensation expense 
Net loss 
Balance at December 31, 2015 
Follow on offering, net of issuance costs 

Issuance of common stock under stock plan 

Purchase of common stock under ESPP 

Stock-based compensation expense 
Unrealized loss on available-for-sale securities, net 
of tax 

Net loss 

  —   
  —   
  —   
  —   

  —   
  —   
  —   
  —   
  40,000,000    $   39,958   
    (39,958) 
  —   
  —   
  —   
  —    
  —    
  —    
  —    
  —   

    (40,000,000) 
  —   
  —   
  —   
  —   
  —   
  —   
  —    $
  —   

  —   
  —   
  —   
  —   

  —   
  —   
  —   
  —   
  20,916,663    $   24,985   
    (24,985) 
  (20,916,663)  
  —   
  —   
  —   
  —   
  —   
  —   
  —    
  —   
  —    
  —   
  —    
  —   
  —    
  —    $
  —   
  —   

  1,626,738    $ 

  24,154,589   
  —   
  —   
  —   
  24,154,589   
  (24,154,589) 
  —   
  —   
  —   
  —   
  —   
  —   
  —    $
  —   

  —   
  405,408   
  —   
  —   

  49,868   
  —   
  —   
  —   
  49,868   
    (49,868) 
  —   
  —   
  —   
  —    
  —    
  —    
  —       27,065,558    $ 
  —   

  15,467,479   
  9,367,708   
  —   
  32,438   
  571,195   
  —   
  —   

  5,750,000   

  —   

  —   
  1   
  —   
  —   

  2    $

  —   
  30   
  2,326   
  —   
  2,822    $ 

    114,792   
    154,743   
  810   
  —   
  580   
  5,180   
  —   

  15   
  9   
  —   
  —   
  1   
  —   
  —   
  27    $  278,927    $ 

  6   

    134,543   

  —   

  —   

  —   

  —   

  —   

  —    

  —    

  —    

  —   

  —    

  —   

  —   

  —   

  —   

  —   

  —    

  —    

  —    

  —   

  —    

  —   

  —   

  —   

  —   

  —   

  —    

  284,471   

  —    

  23,325   

  0   

  0   

  546   

  377   

  —    

  —   

  —    

  —   

  —   

  —   

  —   

  6,140   

  —   

  —   

  —   

  —   

  —   
  —   
  —   
  —   
  —    $ 
  —   
  —   
  —   
  —   
  —   
  —   
  —   
  —    $ 
  —   

  —   

  —   

  —   

  (18) 

  —   
  —   
  —   
  (40,285) 
  (82,206)  $ 
  —   
  —   
  —   
  —   
  —   
  —   
  (52,769) 
  (134,975)  $ 

  —   

  —   

  —   

  —   

  —   

  —   

  (72,495) 

  —   
  31   
  2,326   
  (40,285)  
  (79,382)  
  114,807   
  154,752   
  810   
  —   
  581   
  5,180   
  (52,769)  
  143,979   
  134,549   
  546  
  377  
  6,140  
  (18) 
  (72,495) 
  213,078  

Balance at December 31, 2016 

  —    $

  —    

  —    $

  —    

  —    $

  —       33,123,354    $ 

  33    $  420,533    $ 

  (18)  $ 

  (207,470)  $ 

F-5 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
  
  
  
  
  
  
  
 
  
  
  
  
  
  
  
  
 
  
  
  
  
  
  
  
  
  
 
 
 
 
 
 
 
 
 
  
  
  
  
  
  
  
  
 
  
  
  
  
 
 
 
 
 
  
  
  
  
  
  
  
  
 
 
 
 
 
 
 
 
 
 
  
  
  
  
  
  
  
  
 
 
 
 
 
 
 
 
Blueprint Medicines Corporation 
Consolidated Statements of Cash Flows 
(in thousands) 

Operating activities 
Net loss 
Adjustments to reconcile net loss to net cash used in operating activities: 

Year Ended   
December 31,  

2016 

2015 

2014 

  $    (72,495)  $   (52,769) $   (40,285) 

Depreciation and amortization 
Noncash interest expense 
Change in fair value of warrant liability 
Stock-based compensation 
Accretion of premiums and discounts on investments 
Changes in assets and liabilities: 
Unbilled accounts receivable 
Prepaid expenses and other current assets 
Other assets 
Accounts payable 
Accrued expenses 
Deferred revenue 
Deferred rent 

Net cash used in operating activities 
Investing activities 
Purchases of property and equipment 
Restricted cash 
Purchases of investments 
Maturities of investments 
Net cash used in investing activities 
Financing activities 
Proceeds from term loan 
Principal payments on loan payable 
Proceeds from public offering of common stock, net of commissions and 

underwriting discounts 
Payment of offering costs 
Proceeds from Issuance of Series B convertible preferred stock, net of issuance 

costs   

Proceeds from Issuance of Series C convertible preferred stock, net of issuance 

  1,582  
  73  
  —  
  6,140  
  301  

  (163) 
  1,470  
  (304) 
  4  
  5,773  
  33,594  
  (488) 
  (24,513) 

  (2,354) 
  119  
  (264,467) 
  48,000  
     (218,702) 

  948 
  109 
  445 
  5,180 
  — 

  (3,414)
  (1,482)
  (552)
  1,391 
  1,956 
  13,641 
  2,871 
  (31,676)

  (4,883)
  (1,196)
  — 
  — 
  (6,079)

  622  
  85  
  100  
  2,326  
  —  

  —  
  (469) 
  —  
  (512) 
  2,873  
  —  
  (140) 
  (35,400) 

  (700) 
  —  
  —  
  —  
  (700) 

  —  
  (3,333) 

  — 
  (1,806)

  7,000  
  (750) 

  135,125  
  (143) 

  156,815 
  (2,046)

  —  
  —  

  —  

  — 

  24,985  

costs   

Debt issuance costs 
Proceeds from issuance of common stock, net of repurchases 
Net cash provided by financing activities 
Net (decrease) increase in cash and cash equivalents 
Cash and cash equivalents at beginning of period 
Cash and cash equivalents at end of period 
Supplemental cash flow information 
Cash paid for interest 
Public offering costs incurred but unpaid at period end 
Property and equipment purchases incurred but unpaid at period end 
Conversion of convertible preferred stock into common stock 
Reclassification of warrant liability to additional paid-in-capital 
Issuance of warrants in connection with term loan   

  49,868  
  — 
  —  
  (18) 
  — 
  —  
  268  
  259 
  928  
    153,222 
  81,353  
  132,577  
  45,253  
  115,467 
     (110,638) 
  1,987  
  47,240 
  162,707  
  52,069   $   162,707  $    47,240  

  $ 

  $ 
  $ 
  $ 
  $ 
  $ 
  $ 

  452  $ 
  316   $ 
  —  $ 
  433   $ 
  —   $ 
  1,244  $ 
  —   $   114,808  $ 
  810  $ 
  —   $ 
  —  $ 
  —   $ 

  215  
  —  
  —  
  —  
  —  
  145  

F-6 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
  
 
 
 
   
  
 
     
    
 
  
 
   
 
   
 
   
 
 
 
 
 
 
 
 
  
 
  
 
  
 
  
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
  
 
  
 
 
  
 
  
 
 
 
 
 
 
 
  
 
  
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
  
 
  
 
 
 
  
 
 
 
 
 
 
 
 
   
 
   
 
   
 
 
 
 
Blueprint Medicines Corporation 
Notes to Consolidated Financial Statements 

1. Nature of Business 

Blueprint Medicines Corporation (the Company), a Delaware corporation incorporated on October 14, 2008, is 

a biopharmaceutical company focused on improving the lives of patients with genomically defined diseases driven by 
abnormal kinase activation. The Company’s approach is to systematically and reproducibly identify kinases that are 
drivers of diseases in genomically defined patient populations and to craft drug candidates that may provide significant 
and durable clinical response to patients without adequate treatment options. 

The Company is devoting substantially all of its efforts to research and development, initial market 

development, and raising capital. The Company is subject to a number of risks similar to those of other early stage 
companies, including dependence on key individuals; establishing safety and efficacy in clinical trials for its drug 
candidates; the need to develop commercially viable drug candidates; competition from other companies, many of which 
are larger and better capitalized; and the need to obtain adequate additional financing to fund the development of its drug 
candidates. If the Company is unable to raise capital when needed or on attractive terms, it would be forced to delay, 
reduce, eliminate or out-license certain of its research and development programs or future commercialization efforts. 

On May 5, 2015, the Company completed an initial public offering (IPO) of its common stock, which resulted 

in the sale of 9,367,708 shares of its common stock at a price to the public of $18.00 per share, including 1,221,874 
shares of common stock sold by the Company pursuant to the exercise in full by the underwriters of their option to 
purchase additional shares in connection with the offering. The Company received net proceeds of $154.8 million, after 
deducting underwriting discounts and commissions and offering expenses paid by the Company. 

On December 13, 2016, the Company closed its underwritten public offering of 5,750,000 shares of its common 

stock at a price to the public of $25.00 per share, including 750,000 shares of common stock sold by the Company 
pursuant to the exercise in full by the underwriters of their option to purchase additional shares in connection with the 
offering. The Company received net proceeds of approximately $134.5 million, after deducting underwriting discounts 
and commissions and estimated offering expenses payable by the Company. 

As of December 31, 2016, the Company had cash, cash equivalents and investments of $268.2 million. Based 

on the Company’s current plans, the Company expects that its existing cash, cash equivalents and investments, excluding 
any potential option fees and milestone payments under its existing collaborations, will be sufficient to enable it to fund 
its operating expenses and capital expenditure requirements into at least late 2018. 

2. Summary of Significant Accounting Policies and Recent Accounting Pronouncements 

Basis of Presentation 

The audited consolidated financial statements of the Company included herein have been prepared in 

accordance with accounting principles generally accepted in the United States (GAAP) as found in the Accounting 
Standards Codification (ASC) and Accounting Standards Update (ASU) of the Financial Accounting Standards Board 
(FASB) and the rules and regulations of the SEC.   

The accompanying consolidated financial statements include the accounts of the Company and its wholly 

owned subsidiary, Blueprint Medicines Security Corporation, which is a Massachusetts subsidiary created to buy, sell 
and hold securities. All intercompany transactions and balances have been eliminated. 

               In connection with preparing for its IPO, the Company effected a 1-for-5.5 reverse stock split of the 
Company’s common stock. The reverse stock split became effective on April 10, 2015. All share and per share amounts 
in the financial statements and notes thereto have been retroactively adjusted for all periods presented to give effect to 
this reverse stock split, including reclassifying an amount equal to the reduction in par value of common stock to 
additional paid-in capital. Upon the closing of the IPO in May 2015, all of the Company’s outstanding convertible 
preferred stock automatically converted into 15,467,479 shares of common stock, and warrants exercisable for 
convertible preferred stock automatically converted into warrants exercisable for 42,423 shares of common stock. On 
December 13, 2016, the Company closed its underwritten public offering of 5,750,000 shares. The significant increase in 

F-7 

 
shares outstanding in the years ended December 31, 2016 and 2015 is expected to impact the year-over-year 
comparability of the Company’s net loss per share calculations.   

Use of Estimates 

              The preparation of financial statements in conformity with GAAP requires the Company’s management to make 
estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual 
results could differ from those estimates. Management considers many factors in selecting appropriate financial 
accounting policies and in developing the estimates and assumptions that are used in the preparation of the financial 
statements. Management must apply significant judgment in this process. Management’s estimation process often may 
yield a range of potentially reasonable estimates and management must select an amount that falls within that range of 
reasonable estimates. Estimates are used in the following areas, among others: stock-based compensation expense, 
including estimating the fair value of the Company’s common stock prior to the IPO; revenue recognition; the valuation 
of liability-classified warrants prior to the IPO; accrued expenses; and income taxes. 

Significant Accounting Policies 

The Company’s critical accounting policies are those policies that require the most significant judgments and 
estimates in the preparation of our financial statements. Management has determined that the Company’s most critical 
accounting policies are those relating to revenue recognition, accrued research and development expenses, available-for-
sale investments and stock-based compensation. 

Available-for-Sale Investments 

The Company classifies marketable securities with a remaining maturity when purchased of greater than three 

months as available-for-sale. Marketable securities with a remaining maturity date greater than one year are classified as 
non-current. Available-for-sale securities are maintained by an investment manager and may consist of U.S. Treasury 
securities and U.S. government agency securities. Available-for-sale securities are carried at fair value with the 
unrealized gains and losses included in other comprehensive income (loss) as a component of stockholders’ equity until 
realized. Any premium or discount arising at purchase is amortized and/or accreted to interest income and/or expense 
over the life of the instrument. Realized gains and losses are determined using the specific identification method and are 
included in other income (expense). If any adjustment to fair value reflects a decline in value of the investment, the 
Company considers all available evidence to evaluate the extent to which the decline is “other-than-temporary” and, if 
so, will mark the investment to market through a charge to the Company’s statement of operations and comprehensive 
loss. 

Revenue Recognition 

The Company recognizes revenue from license and collaboration agreements in accordance with FASB ASC 
Topic 605, Revenue Recognition (ASC 605). Accordingly, revenue is recognized when all of the following criteria are 
met: 

• 

• 

• 

• 

persuasive evidence of an arrangement exists; 

delivery has occurred or services have been rendered; 

the seller’s price to the buyer is fixed or determinable; and 

collectability is reasonably assured. 

Amounts received prior to satisfying the revenue recognition criteria are recognized as deferred revenue in the 
Company’s balance sheets. Amounts expected to be recognized as revenue within the 12 months following the balance 
sheet date are classified as deferred revenue, current portion. Amounts not expected to be recognized as revenue within 
the 12 months following the balance sheet date are classified as deferred revenue, net of current portion. 

F-8 

The Company’s revenue is currently generated through its collaboration agreements with Alexion Pharma 

Holding (Alexion) and F. Hoffmann-La Roche Ltd and Hoffmann-La Roche Inc. (collectively, Roche) . The terms of 
these agreements contain multiple elements, or deliverables, including an exclusive license granted by the Company to 
Alexion and Roche to research, develop, manufacture and commercialize the licensed products and the compounds in 
the field in the territory, as well as research and development activities to be performed by the Company on behalf of 
Alexion and Roche related to the licensed product candidates. In addition, the terms of these agreements include 
payments to the Company of one or more of the following: a nonrefundable, upfront payment; contingent milestone 
payments related to specified pre-clinical milestones, development milestones and sales-based commercial milestones; 
fees for research and development services rendered; and royalties on commercial sales of licensed product candidates, if 
any. To date, the Company has received the upfront payments, payments for the achievement of certain pre-clinical 
milestones under the Alexion agreement and payments for certain research and development services. The Company is 
eligible to earn additional milestone payments under both agreements. The Company has not earned royalty revenue as a 
result of product sales. See Note 13 for additional information on this agreement. 

When evaluating multiple element arrangements, the Company considers whether the deliverables under the 

arrangement represent separate units of accounting. This evaluation requires subjective determinations and requires 
management to make judgments about the individual deliverables and whether such deliverables are separable from the 
other aspects of the contractual relationship. In determining the units of accounting, management evaluates certain 
criteria, including whether the deliverables have standalone value, based on the consideration of the relevant facts and 
circumstances for each arrangement. The consideration received is allocated among the separate units of accounting 
using the relative selling price method, and the applicable revenue recognition criteria are applied to each of the separate 
units. Deliverables are considered separate units of accounting provided that: (i) the delivered item(s) has value to the 
customer on a stand-alone basis and (ii) if the arrangement includes a general right of return relative to the delivered 
item(s), delivery or performance of the undelivered item(s) is considered probable and substantially in the control of the 
Company. In assessing whether an item has stand-alone value, the Company considers factors such as the research, 
manufacturing and commercialization capabilities of the collaboration partner and the availability of the associated 
expertise in the general marketplace. In addition, the Company considers whether the collaboration partner can use the 
deliverable(s) for their intended purpose without the receipt of the remaining element(s), whether the value of the 
deliverable is dependent on the undelivered item(s) and whether there are other vendors that can provide the undelivered 
element(s). The Company’s collaboration agreements with Alexion and Roche do not contain a general right of return 
relative to the delivered item(s).   

Arrangement consideration that is fixed or determinable is allocated among the separate units of accounting 

using the relative selling price method. Then, the applicable revenue recognition criteria in ASC 605-25 are applied to 
each of the separate units of accounting in determining the appropriate period and pattern of recognition. The Company 
determines the selling price of a unit of accounting following the hierarchy of evidence prescribed by ASC 605-25. 
Accordingly, the Company determines the estimated selling price for units of accounting within each arrangement using 
vendor-specific objective evidence (VSOE) of selling price, if available, third-party evidence (TPE) of selling price if 
VSOE is not available, or best estimate of selling price (BESP) if neither VSOE nor TPE is available. The Company 
typically uses BESP to estimate the selling price, since it generally does not have VSOE or TPE of selling price for its 
units of accounting. Determining the BESP for a unit of accounting requires significant judgment. In developing the 
BESP for a unit of accounting, the Company considers applicable market conditions and relevant entity-specific factors, 
including factors that were contemplated in negotiating the agreement with the customer and estimated costs. The 
Company validates the BESP for units of accounting by evaluating whether changes in the key assumptions used to 
determine the BESP will have a significant effect on the allocation of arrangement consideration between multiple units 
of accounting. 

In the event that an element of a multiple element arrangement does not represent a separate unit of accounting, 

the Company recognizes revenue from the combined element over the period over which it expects to fulfill its 
performance obligations or as undelivered items are delivered, as appropriate, if all of the other revenue recognition 
criteria in ASC 605-25 are met. If the pattern of performance in which the service is provided to the customer can be 
determined and objectively measurable performance measures exist, then the Company recognizes revenue under the 
arrangement using the proportional performance method. If there is no discernible pattern of performance and/or 
objectively measurable performance measures do not exist, then the Company recognizes revenue under the arrangement 
on a straight-line basis over the period the Company is expected to complete its performance obligations. Revenue 
recognized is limited to the lesser of the cumulative amount of payments received or the cumulative amount of revenue 
earned, as determined using the straight-line method or proportional performance method, as applicable, as of the period 
ending date. 

F-9 

The Company’s multiple-element revenue arrangements may include the following: 

Exclusive Licenses 

The deliverables under the Company’s collaboration agreements may include exclusive licenses to research, 

develop, manufacture and commercialize licensed products. To account for this element of an arrangement, management 
evaluates whether an exclusive license has stand-alone value from the undelivered elements based on the consideration 
of the relevant facts and circumstances of the arrangement, including the research and development capabilities of the 
collaboration partner. The Company may recognize the arrangement consideration allocated to licenses upon delivery of 
the license if facts and circumstances indicate that the license has stand-alone value from the undelivered elements, 
which generally include research and development services. The Company defers arrangement consideration allocated to 
licenses if facts and circumstances indicate that the delivered license does not have stand-alone value from the 
undelivered elements. 

When management believes a license does not have stand-alone value from the other deliverables to be 
provided in the arrangement, the Company recognizes revenue attributed to the license on a proportional basis over the 
Company’s contractual or estimated performance period, which is typically the term of the Company’s research and 
development obligations. If management cannot reasonably estimate when the Company’s performance obligation ends, 
then revenue is deferred until management can reasonably estimate when the performance obligation ends. The periods 
over which revenue should be recognized are subject to estimates by management and may change over the course of the 
research and development and licensing agreement. Such a change could have a material impact on the amount of 
revenue the Company records in future periods. 

Research and Development Services 

The deliverables under the Company’s collaboration agreements may include research and development 

services to be performed by the Company on behalf of the partner. Payments or reimbursements resulting from the 
Company’s research and development efforts are recognized as the services are performed and presented on a gross basis 
because the Company is the principal for such efforts, so long as there is persuasive evidence of an arrangement, the fee 
is fixed or determinable, and collection of the related amount is reasonably assured. 

Milestone Revenue   

The Company’s collaboration agreements may include contingent milestone payments related to specified pre-

clinical milestones, development milestones and sales-based commercial milestones.   

At the inception of an arrangement that includes milestone payments, the Company evaluates whether each 

milestone is substantive and at risk to both parties on the basis of the contingent nature of the milestone. This evaluation 
includes an assessment of whether:   

• 

• 

• 

the consideration is commensurate with either the Company’s performance to achieve the milestone or 
the enhancement of the value of the delivered item(s) as a result of a specific outcome resulting from 
the Company’s performance to achieve the milestone; 

the consideration relates solely to past performance; and 

the consideration is reasonable relative to all of the deliverables and payment terms within the 
arrangement. 

The Company evaluates factors such as the scientific, clinical, regulatory, commercial and other risks that must 
be overcome to achieve the respective milestone and the level of effort and investment required to achieve the respective 
milestone in making this assessment. There is considerable judgment involved in determining whether a milestone 
satisfies all of the criteria required to conclude that a milestone is substantive. Milestones that are not considered 
substantive are accounted for as license payments and recognized over the remaining period of performance from the 
date of achievement of the milestone. Milestones that are considered substantive will be recognized in their entirety upon 
successful accomplishment of the milestone with a cumulative catch up adjustments, assuming all other revenue 
recognition criteria are met.   

F-10 

Royalty Revenue.   

             The Company will recognize royalty revenue in the period of sale of the related product(s), based on the 
underlying contract terms, provided that the reported sales are reliably measurable and the Company has no remaining 
performance obligations, assuming all other revenue recognition criteria are met.   

Comprehensive Income (Loss)   

Comprehensive income (loss) is defined as the change in equity of a business enterprise during a period from 

transactions and other events and circumstances from non-owner sources. Other comprehensive income (loss) consisted 
of unrealized gains and losses on investments for the year ended December 31, 2016. For the years ended December 31, 
2015 and 2014, comprehensive loss was equal to net loss. 

Research and Development Costs 

Expenditures relating to research and development are expensed in the period incurred. Research and 

development expenses consist of both internal and external costs associated with the development of the Company’s 
selective cancer therapies and building of its discovery platform. 

             In certain circumstances, the Company is required to make nonrefundable advance payments to vendors for 
goods or services that will be received in the future for use in research and development activities. In such 
circumstances, the nonrefundable advance payments are deferred and capitalized, even when there is no alternative 
future use for the research and development, until related goods or services are provided. In circumstances where 
amounts have been paid in excess of costs incurred, the Company records a prepaid expense. 

Property and Equipment, Net 

             Property and equipment consists of lab equipment, furniture and fixtures, computer equipment, software, and 
leasehold improvements, all of which is stated at cost. Expenditures for maintenance and repairs are recorded to expense 
as incurred, whereas major betterments are capitalized as additions to property and equipment. Depreciation is 
recognized over the estimated useful lives of the assets using the straight-line method. 

Impairment of Long-Lived Assets 

             The Company continually evaluates whether events or circumstances have occurred that indicate that the 
estimated remaining useful life of its long-lived assets may warrant revision or that the carrying value of these assets 
may be impaired. The Company has not recognized any impairment charges through December 31, 2016. 

Warrants 

             The Company accounts for warrant instruments that either conditionally or unconditionally obligate the issuer to 
transfer assets and liabilities regardless of the timing of the redemption feature or price, even though the underlying 
shares may be classified as permanent or temporary equity. These warrants are subject to revaluation at each balance 
sheet date, and any changes in fair value are recorded as a component of other income (expense), until the earlier of their 
exercise or expiration or the time the warrants no longer conditionally or unconditionally obligate the Company to 
transfer assets or liabilities, which occurred upon the IPO, at which time the warrant liability was reclassified to 
stockholders’ equity.   

Stock-Based Compensation Expense 

The Company expenses the fair value of employee stock awards net of estimated forfeitures on a straight-line 

basis over the requisite service period, which generally is the vesting period. Compensation cost for restricted stock 
awards issued to employees is measured using the grant date intrinsic value of the award, net of estimated forfeitures, 
adjusted to reflect actual forfeitures. The Company estimates the fair value of the options granted to employees at the 

F-11 

 
date of grant using the Black-Scholes option-pricing model that requires management to apply judgment and make 
estimates, including: 

• 

• 

• 

• 

• 

expected volatility, which is calculated based on reported volatility data for a representative group of 
publicly traded companies for which historical information is available. Prior to April 30, 2015, the 
Company was a privately-held company and lacked company-specific historical and implied volatility 
information. As such, the Company has used an average of expected volatility based on the volatilities 
of a representative group of publicly traded biopharmaceutical companies for a period equal to the 
expected term of the option grant. Beginning in the fourth quarter of 2015, the Company began to 
include its own volatility into the average calculation. The Company intends to consistently apply this 
process using the same representative companies until a sufficient amount of historical information 
regarding the volatility of its own share price becomes available or until circumstances change, such 
that the identified entities are no longer representative companies. In the latter case, more suitable, 
similar entities whose share prices are publicly available would be utilized in the calculation; 

risk-free interest rate, which is based on the U.S. Treasury yield curve in effect at the time of grant 
commensurate with the expected life assumption; 

expected term, which the Company calculates using the simplified method, as prescribed by the 
Securities and Exchange Commission Staff Accounting Bulletin No. 107, Share-Based Payment, as 
the Company has insufficient historical information regarding stock options to provide a basis for an 
estimate; 

prior to becoming a public company, fair value estimates of the underlying common shares, which 
were determined using the option-pricing method (OPM) or a hybrid of the probability-weighted 
expected return method and the OPM and were approved by the Company’s board of directors. Upon 
becoming a public company, the fair value of the underlying common shares equals the closing price 
of the Company’s stock on The NASDAQ Global Select Market on the date of grant; and 

dividend yield which is zero based on the fact that the Company never paid cash dividends and does 
not expect to pay any cash dividends in the foreseeable future. 

The amount of stock-based compensation expense recognized during a period is based on the fair value of the 

portion of the awards that are ultimately expected to vest. Forfeitures are estimated at the time of grant and revised, if 
necessary, in subsequent periods if actual forfeitures differ from those estimates. The term “forfeitures” is distinct from 
“cancellations” or “expirations” and represents only the unvested portion of the surrendered option. The Company 
evaluates its forfeiture rate at each reporting period. Ultimately, the actual expense recognized over the vesting period 
will be for only those options that vest. 

             Stock-based awards issued to non-employees, including directors for non-board-related services, are accounted 
for based on the fair value of such services received or of the intrinsic value of equity instruments issued, whichever is 
more reliably measured. These stock-based awards are revalued at each vesting date and period-end. Stock-based awards 
subject to service-based vesting conditions are expensed on a straight-line basis over the vesting period. 

Income Taxes 

The Company recognizes deferred tax assets and liabilities for the expected future tax consequences of events 
that have been recognized in the Company’s financial statements or tax returns. Under this method, deferred tax assets 
and liabilities are determined based on differences between the financial statement carrying amounts and the tax bases of 
the assets and liabilities using the enacted tax rates in effect in the years in which the differences are expected to reverse. 
A valuation allowance against deferred tax assets is recorded if, based on the weight of the available evidence, it is more 
likely than not that some or all of the deferred tax assets will not be realized. The Company accounts for uncertain tax 
positions using a more-likely-than-not threshold for recognizing and resolving uncertain tax positions. The evaluation of 
uncertain tax positions is based on factors including, but not limited to, changes in the law, the measurement of tax 
positions taken or expected to be taken in tax returns, the effective settlement of matters subject to audit, new audit 
activity, and changes in facts or circumstances related to a tax position. 

F-12 

Concentrations of Credit Risk and Off-Balance-Sheet Risk 

The Company has no significant off-balance-sheet risk such as foreign exchange contracts, option contracts, or 

other foreign hedging arrangements. Financial instruments that potentially expose the Company to concentrations of 
credit risk primarily consist of cash and cash equivalents and accounts receivable.   

The Company maintains its cash, cash equivalents and investments in a custodian account at a high quality 

financial institution, and consequently, the Company believes that such funds are subject to minimal credit risk. 

Accounts receivable represents amounts due from the Company’s collaboration partner. The Company monitors 

economic conditions to identify facts or circumstances that may indicate that its accounts receivable is at risk of 
collection. 

Segment and Geographic Information 

Operating segments are identified as components of an enterprise about which separate discrete financial 
information is available for evaluation by the chief operating decision maker, or decision making group, in making 
decisions on how to allocate resources and assess performance. The Company’s chief operating decision maker is the 
chief executive officer. The Company and the chief operating decision maker view the Company’s operations and 
manage its business as one operating segment. The Company operates only in the United States. 

Recent Accounting Pronouncements 

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (ASU 2014-09), 

which supersedes the revenue recognition requirements in ASC 605-25, Multiple-Element Arrangements and most 
industry-specific guidance. The new standard requires that an entity recognize revenue to depict the transfer of promised 
goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled 
in exchange for those goods or services. The update also requires additional disclosure about the nature, amount, timing 
and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes 
in judgments and assets recognized from costs incurred to obtain or fulfill a contract. This new guidance will be effective 
for annual reporting periods (including interim reporting periods within those years) beginning January 1, 2018. Early 
adoption in 2017 is permitted. Companies have the option of applying this new guidance retrospectively to each prior 
reporting period presented (the full retrospective method) or retrospectively with the cumulative effect of initially 
applying this update recognized at the date of initial application (the modified retrospective method). The Company 
currently anticipates adoption of the new standard effective January 1, 2018 under the modified retrospective method. 
The Company is in the process of determining the impact of the new guidance on its financial statements. 

In August 2014, the FASB issued ASU No. 2014-15, Presentation of Financial Statements—Going Concern 

(Subtopic 205-40): Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern. This new 
standard is intended to define management’s responsibility to evaluate whether there is substantial doubt about an 
entity’s ability to continue as a going concern within one year of the date of issuance of the entity’s financial statements 
and to provide related footnote disclosures. The standard is effective for interim and annual periods ending after 
December 15, 2016. The standard did not have a material impact on the Company’s consolidated financial statements or 
footnote disclosures as of the December 31, 2016 adoption date, but may require additional disclosures in future periods. 

In March 2016, the FASB issued ASU No. 2016-09, Compensation – Stock Compensation, which amends ASC 
Topic 718, Compensation – Stock Compensation. The new standard identifies areas for simplification involving several 
aspects of accounting for share-based payment transactions, including the income tax consequences, classification of 
awards as either equity or liabilities, an option to recognize gross stock compensation expense with actual forfeitures 
recognized as they occur, as well as certain classifications on the statement of cash flows. The new standard will be 
effective for the Company on January 1, 2017. The adoption of this standard is expected to impact the income tax 
footnote disclosures and is not expected to have a material impact on the Company’s consolidated financial statements. 

In November, 2015, the FASB issued ASU No. 2015-17, Income Taxes—Balance Sheet Classification of 

Deferred Taxes(Topic 740). The new standard requires that deferred tax assets and liabilities be classified as noncurrent 
in a classified statement of financial position. The adoption of this standard in the last quarter of 2016 did not have a 

F-13 

 
 
material impact on the Company’s financial position or results of operations as its net deferred tax assets have been fully 
offset by a valuation allowance. 

             In February 2016, the FASB issued ASU No. 2016-02, Leases. ASU 2016-02 will change the way the Company 
recognizes its leased assets. ASU 2016-02 will require organizations that lease assets—referred to as "lessees"—to 
recognize on the balance sheet the assets and liabilities representing the rights and obligations created by those leases. 
ASU 2016-02 will also require disclosures to help investors and other financial statement users better understand the 
amount, timing, and uncertainty of cash flows arising from leases. The standard is effective for annual reporting periods 
(including interim reporting periods within those years) beginning after December 15, 2018. Early adoption is permitted. 
The Company is currently evaluating the methods of adoption allowed by the new standard and the effect that adoption 
of the standard is expected to have on the Company's consolidated financial statements and related disclosures. 

3. Cash Equivalents and Investments 

Cash equivalents are highly liquid investments that are readily convertible into cash with original maturities of 

three months or less when purchased. Investments consist of securities with original maturities greater than 90 days 
when purchased. The Company classifies these investments as available-for-sale and records them at fair value in the 
accompanying consolidated balance sheets. Unrealized gains or losses are included in accumulated other comprehensive 
income (loss). Premiums or discounts from par value are amortized to investment income over the life of the underlying 
investment. 

Cash equivalents and investments, available-for-sale, consisted of the following at December 31, 2016 and 

December 31, 2015 (in thousands): 

December 31, 2016 
Cash equivalents: 

Money market funds 

Investments, available-for-sale: 
U.S. treasury obligations 

Total 

Average 
Maturity 

Amortized 
Cost 

Unrealized     
Gain 

Unrealized 
Losses 

Fair 
Value 

  $ 

  52,069   $ 

  —   $ 

  —   $ 

  52,069  

298 Days   

  216,167  
  $    268,236   $ 

  14  
  14   $ 

  (32) 
  216,149  
  (32)  $    268,218  

December 31, 2015 
Cash equivalents: 

Money market funds 

Total 

Average 

Maturity 

Amortized 

Unrealized     

Unrealized 

Cost 

Gain 

Losses 

Fair 

Value 

  $    162,707   $ 
  $    162,707   $ 

  —   $ 
  —   $ 

  —   $    162,707  
  —   $    162,707  

Although available to be sold to meet operating needs or otherwise, securities are generally held through 

maturity. The cost of securities sold is determined based on the specific identification method for purposes of recording 
realized gains and losses. During the year ended December 31, 2016, there were no realized gains or losses on sales of 
investments, and no investments were adjusted for other than temporary declines in fair value. 

At December 31, 2016, the Company held 33 securities that were in an unrealized loss position.    The 
aggregate fair value of securities held by the Company in an unrealized loss position for less than twelve months as of 
December 31, 2016 was $147.1 million and there were no securities held by the Company in an unrealized loss position 
for more than twelve months. The Company has the intent and ability to hold such securities until recovery. The 
Company determined that there was no material change in the credit risk of the above investments. As a result, the 
Company determined it did not hold any investments with an other-than temporary impairment as of December 31, 2016. 

F-14 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
     
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
     
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
4. Fair Value of Financial Instruments 

The fair value hierarchy prioritizes the inputs to valuation techniques used to measure fair value into three 

broad levels as follows: 

•  Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities. 

•  Level 2 inputs are inputs other than quoted prices included within Level 1 that are observable for the 

asset or liability, either directly or indirectly. 

•  Level 3 inputs are unobservable inputs that reflect the Company’s own assumptions about the 
assumptions market participants would use in pricing the asset or liability. Financial assets and 
liabilities are classified in their entirety based on the lowest level of input that is significant to the fair 
value measurement. 

Financial instruments measured at fair value as of December 31, 2016, are classified below based on the fair 

value hierarchy described above: 

Description 
Financial Assets 
Cash equivalents: 

Money market funds 

Investments, available-for-sale: 
U.S Treasury obligations 

Total 

  December 31, 
2016 

Active 
  Markets 
(Level 1) 

    Observable     Unobservable  

Inputs 
(Level 2) 

Inputs 
(Level 3) 

  $ 

  52,069   $   52,069   $ 

  —   $ 

  —  

  216,149  

    216,149  

  $    268,218   $  268,218   $ 

  —  
  —   $ 

  —  
  —  

Financial instruments measured at fair value as of December 31, 2015, are classified below based on the fair 

value hierarchy described above: 

Description 
Financial Assets 
Cash equivalents: 

Money market funds 

  December 31, 
2015 

Active 
  Markets 
(Level 1) 

    Observable     Unobservable  

Inputs 
(Level 2) 

Inputs 
(Level 3) 

  $    162,707   $  162,707   $ 

  —   $ 

  —  

At December 31, 2016 and December 31, 2015, the fair value of the Company’s term loan payable is 
determined using current applicable rates for similar instruments as of the balance sheet date. The carrying value of the 
Company’s term loan payable approximates fair value because the Company’s interest rate yield approximates current 
market rates. The Company’s term loan payable is a Level 3 liability within the fair value hierarchy.   

The fair value of the preferred stock warrant liability was determined based on Level 3 inputs and utilizing the 

Black-Scholes option pricing model (see Note 10). On May 5, 2015, upon completion of the IPO, the warrants to 
purchase preferred stock converted into warrants to purchase common stock and the Company reclassified the fair value 
of the warrants as of May 5, 2015 to additional paid-in capital. The following table presents activity in the preferred 
stock warrant liability during the years ended December 31, 2015 and 2014 (in thousands):   

Beginning balance 

Issuance of warrant at fair value 
Change in fair value 
Reclassification of fair value to additional paid-in capital 

Ending balance 

F-15 

Year Ended   
December 31,  

2015 

2014 

      $    365       $   119  
  146  
  100  
  —  
$   365  

  —  
  445  
    (810) 
  —  
$ 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
      
 
    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
   
 
   
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
      
 
    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
   
 
   
 
   
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
5. Restricted Cash 

At December 31, 2016 and 2015, $1.3 million and $1.4 million, respectively, of the Company’s cash is 

restricted by a bank. As of December 31, 2016 and 2015, $1.3 million of the restricted cash was included in long-term 
assets on the Company’s balance sheet related to a security deposit for the lease agreement for the Company’s corporate 
headquarters. The balance as of December 31, 2015 also included $0.1 million of restricted cash in current assets as 
collateral for a stand-by letter of credit issued by the Company to its landlord in connection with the lease of the 
Company’s former corporate headquarters, which ended in October 2015.   

6. Property and Equipment, Net 

Property and equipment and related accumulated depreciation are as follows (in thousands): 

Lab equipment 
Furniture and fixtures 
Computer equipment 
Leasehold improvements 
Software 

Less: accumulated depreciation and amortization 
Total property and equipment, net 

Estimated 
Useful Life 
(Years) 
  5 
  4 
  3 

  December 31, 
2016 

    $ 

  December 31,    
2015 
  2,712  
  632  
  615  
  4,612  
  167  
  8,738  
  (2,077) 
  6,661  

  3,059     $ 
  784  
  768  
  4,673  
  172  
  9,456  
  (3,268) 
  6,188   $ 

   Term of lease   

  3 

  $ 

Depreciation expense for the years ended December 31, 2016, 2015 and 2014 was $1.6 million, $0.9 million 

and $0.6 million, respectively. 

7. Accrued Expenses 

Accrued expenses consist of the following (in thousands): 

External research and development 
Employee compensation 
Professional fees and other 
Interest 
Property and equipment costs 
Severance 

8. Collaborations 

Roche 

  December 31,    December 31,     

2016 
  5,696   $ 
  4,118  
  1,697  
  212  
  23  
  —  
  11,746   $ 

2015 
  1,471   
  2,731  
  1,207  
  34  
  994  
  6  
  6,443  

  $ 

  $ 

In March 2016, the Company entered into a collaboration and license agreement (as amended, Roche 
agreement) with Roche for the discovery, development and commercialization of up to five small molecule therapeutics 
targeting kinases believed to be important in cancer immunotherapy, as single products or possibly in combination with 
other therapeutics. The parties initiated activities for three of the collaboration programs in 2016, and the parties have 
agreed to work together to use the Company’s novel target discovery engine and proprietary compound library to select 
targets for up to two additional collaboration programs. 

Under the Roche agreement, Roche is granted up to five option rights to obtain an exclusive license to exploit 

products derived from the collaboration programs in the field of cancer immunotherapy. Such option rights are triggered 
upon the achievement of Phase 1 proof-of-concept. For up to three of the five collaboration programs, if Roche exercises 

F-16 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
     
  
 
  
  
  
 
  
  
  
  
  
 
  
  
 
 
 
 
  
  
 
 
 
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
     
     
  
 
 
 
 
  
  
 
  
  
 
 
 
 
 
 
 
 
its option, Roche will receive worldwide, exclusive commercialization rights for the licensed products. For up to two of 
the five collaboration programs, if Roche exercises its option, the Company will retain commercialization rights in the 
United States for the licensed products, and Roche will receive commercialization rights outside of the United States for 
the licensed products. The Company will also retain worldwide rights to any products for which Roche elects not to 
exercise its applicable option.   

Prior to Roche’s exercise of an option, the Company will have the lead responsibility for drug discovery and 

pre-clinical development of all collaboration programs. In addition, the Company will have the lead responsibility for the 
conduct of all Phase 1 clinical trials other than those Phase 1 clinical trials for any product in combination with Roche’s 
portfolio of therapeutics, for which Roche will have the right to lead the conduct of such Phase 1 clinical trials. Pursuant 
to the Roche agreement, the parties will share the costs of Phase 1 development for each collaboration program. In 
addition, Roche will be responsible for post-Phase 1 development costs for each licensed product for which it retains 
global commercialization rights, and the Company and Roche will share post-Phase 1 development costs for each 
licensed product for which the Company retains commercialization rights in the United States. 

Subject to the terms of the Roche agreement, the Company received an upfront cash payment of $45.0 million 

and will be eligible to receive up to approximately $965.0 million in contingent option fees and milestone payments 
related to specified research, pre-clinical, clinical, regulatory and sales-based milestones. Of the total contingent 
payments, up to approximately $215.0 million are for option fees and milestone payments for research, pre-clinical and 
clinical development events prior to licensing across all five potential collaboration programs, including contingent 
milestone payments for initiation of each of the collaboration programs for which the parties will work together to select 
targets (pre-option exercise milestones). In addition, for any licensed product for which Roche retains worldwide 
commercialization rights, the Company will be eligible to receive tiered royalties ranging from low double-digits to 
high-teens on future net sales of the licensed product. For any licensed product for which the Company retains 
commercialization rights in the United States, the Company and Roche will be eligible to receive tiered royalties ranging 
from mid-single-digits to low double-digits on future net sales in the other party’s respective territories in which it 
commercializes the licensed product. The upfront cash payment and any payments for milestones, option fees and 
royalties are non-refundable, non-creditable and not subject to set-off. 

The Roche agreement will continue until the date when no royalty or other payment obligations are or will 

become due, unless earlier terminated in accordance with the terms of the Roche agreement. Prior to its exercise of its 
first option, Roche may terminate the Roche agreement at will, in whole or on a collaboration target-by-collaboration 
target basis, upon 120 days’ prior written notice to the Company. Following its exercise of an option, Roche may 
terminate the Roche agreement at will, in whole, on a collaboration target-by-collaboration target basis, on a 
collaboration program-by-collaboration program basis or, if a licensed product has been commercially sold, on a 
country-by-country basis, (i) upon 120 days’ prior written notice if a licensed product has not been commercially sold or 
(ii) upon 180 days’ prior written notice if a licensed product has been commercially sold. Either party may terminate the 
Roche agreement for the other party’s uncured material breach or insolvency and in certain other circumstances agreed 
to by the parties. In certain termination circumstances, the Company is entitled to retain specified licenses to be able to 
continue to exploit the licensed products. 

The Company determined that there were five deliverables under the Roche agreement: (i) a non-transferable, 

sub-licensable and non-exclusive license to use the Company’s intellectual property and collaboration compounds to 
conduct research activities;(ii) conducting research and development activities through Phase 1 clinical trials under the 
research plan; (iii) providing pre-clinical and clinical supply of collaboration compounds; (iv) participation on a joint 
research committee (JRC) and joint development committee (JDC); and (v) regulatory responsibilities under Phase 1 
clinical trials. 

The Company determined that the license did not have value to Roche on a stand-alone basis due to the 
specialized nature of the research activities to be provided by the Company that are not available in the marketplace and 
the fact that the license is to perform research and development only. Therefore, the license has limited value without the 
performance of the research and development activities and is not separable. The pre-clinical and clinical supply 
activities are integral to the performance of the research and development activities and can only be used for the 
performance of such activities, and the regulatory responsibilities are dependent on the research and development 
activities. The Company determined that the best estimate for the selling price of the JRC and JDC participation was 
inconsequential. Accordingly, the Company combined the license, pre-clinical and clinical supply, JRC and JDC 
participation and regulatory responsibilities deliverables with the research and development activities, the last item to be 

F-17 

delivered in the arrangement, as one unit of accounting. The Company is recognizing the total allocable arrangement 
consideration consisting of the upfront payment of $45.0 million as revenue on a straight-line basis over the Company’s 
best estimate of the period it expects to perform research and development activities. The Company expects the services 
to be delivered ratably.   

The Company evaluated whether the option fees that may be received in connection with the Roche agreement 
are substantive. The Company concluded that the option fees were substantive due to the uncertainty around whether the 
goals of the collaboration will be achieved, and therefore the options are not a deliverable in the current arrangement. If 
Roche elects to exercise the options, the exercises and related contingent deliverables would be accounted for as a 
separate arrangement.   

The Company evaluated whether the milestones that may be received in connection with the Roche agreement 
are substantive milestones. Pre-option exercise milestones, of up to $215.0 million, that are expected to be achieved as a 
result of the Company’s efforts during the performance of the research and development activities are considered 
substantive and are recognized as revenue upon the achievement of the milestone, assuming all other revenue 
recognition criteria are met. The development event milestones are not considered substantive because the Company 
does not contribute effort to the achievement of such milestones as they are expected to be achieved after the 
performance of the research and development activities. Consideration received with respect to these milestones will be 
added to the total arrangement consideration that has been allocated to the identified units of accounting. As a result, that 
amount is recognized as revenue ratably over the period starting from the effective date of the agreement to the date that 
the Company will complete all of its obligations, with a cumulative catch-up from the effective date through the date of 
achievement of the milestone. If the consideration is received after the completion of all of the Company’s obligations, 
the amount will be recognized as revenue immediately. 

During the year ended December 31, 2016, the Company recognized revenue under the Roche agreement of 

$4.5 million, which represents a portion of the $45.0 million upfront payment. 

Alexion 

In March 2015, the Company entered into a research, development and commercialization agreement (Alexion 

agreement) with Alexion to research, develop and commercialize drug candidates for an undisclosed activated kinase 
target, which is the cause of a rare genetic disease. Under the terms of the Alexion agreement, the Company is 
responsible for research and pre-clinical development activities related to drug candidates and Alexion is responsible for 
all clinical development, manufacturing and commercialization activities related to drug candidates. 

Alexion is responsible for funding 100% of the Company’s research and development costs incurred under the 
research plan, including pass-through costs and a negotiated yearly rate per full-time equivalent for its employees’ time 
and their associated overhead expenses. The Company received a $15.0 million non-refundable upfront payment in 
March 2015 upon execution of the Alexion agreement and is eligible to receive over $250.0 million in payments upon 
the successful achievement of pre-specified pre-clinical, clinical, regulatory and commercial milestones as follows: 
(i) up to $6.0 million in pre-clinical milestone payments for the first licensed product, (ii) up to $83.0 million and 
$61.5 million in development milestone payments for the first and second licensed products, respectively, and (iii) up to 
$51.0 million in commercial milestone payments for each of the first and second licensed products. Alexion will pay the 
Company tiered royalties, ranging from mid-single to low-double digit percentages, on a country-by-country and 
licensed-product-by-licensed product basis, on worldwide net product sales of licensed products. The royalty term for 
each licensed product in each country is the period commencing with first commercial sale of such licensed product in 
such country and ending on the later of (i) the expiration of the last-to-expire valid claim of specified patents covering 
such licensed product, (ii) the expiration of the applicable regulatory exclusivity period, and (iii) 10 or 15 years from 
specified commercial sales. There are no refund provisions in the Alexion agreement. 

Alexion has the right to terminate the Alexion agreement if the Company undergoes a change of control or 

becomes an affiliate of a biotechnology or pharmaceutical company, and may terminate the Alexion agreement at will 
upon 90 days prior written notice. The Company and Alexion have the right to terminate the Alexion agreement in the 
event of the other party’s uncured breach or insolvency, and in certain other circumstances agreed to by the parties. 

The Company determined that there were three deliverables under the Alexion agreement: (i) an exclusive 

license to research, develop, manufacture and commercialize the licensed products and the compounds in the field in the 

F-18 

 
territory, (ii) conducting research and development activities under the research plan and (iii) participation on a joint 
steering committee (JSC) and joint project team (JPT). 

The Company determined that the license did not have value to Alexion on a stand-alone basis due to the 

specialized nature of the research services to be provided by the Company that are not available in the marketplace. 
Therefore, the deliverables are not separable and, accordingly, the license, undelivered research and development 
activities and JSC and JPT participation are a single unit of accounting. When multiple deliverables are accounted for as 
a single unit of accounting, the Company bases its revenue recognition model on the final deliverable. Under the Alexion 
agreement, the last deliverable to be completed is its research and development activities and participation on the JSC 
and JPT, which are expected to be delivered over the same performance period. The Company is utilizing a proportional 
performance model to recognize revenue under the Alexion agreement.   

The Company evaluated whether the milestones that may be received in connection with the Alexion agreement 

are substantive or non-substantive milestones. The Company concluded that the first pre-clinical milestone payment in 
the Alexion agreement is non-substantive due to the certainty at the date the arrangement was entered into that the event 
will be achieved. In the second quarter of 2015, the Company achieved the first pre-clinical milestone under the Alexion 
agreement and received a $1.8 million payment from Alexion. The Company is recognizing revenues from the related 
milestone payment over the period of performance. 

The remaining non-refundable pre-clinical milestones that are expected to be achieved as a result of the 
Company’s efforts during the period of substantial involvement are considered substantive and are recognized as 
revenue upon the achievement of the milestone, assuming all other revenue recognition criteria are met. The Company 
has recognized and received an aggregate of $2.0 million in substantive milestones through December 31, 2016. 
Milestones that are expected to be achieved after the period of substantial involvement are not considered substantive 
because the Company does not contribute effort to the achievement of such milestones. These milestones are recognized 
as revenue upon achievement of the milestone, assuming all other revenue recognition criteria are met, as there are no 
undelivered elements remaining and no continuing performance obligations. 

During the year ended December 31, 2016, the Company recognized revenue under the Alexion agreement of 

$23.3 million, which represents $14.6 million of reimbursable research and development costs, $1.8 million in milestone 
payments that were recognized upon achievement, as well as a portion of the $15.0 million upfront payment and the $1.8 
million non-substantive milestone payment previously received. During the year ended December 31, 2016, the 
Company received $14.2 million related to reimbursable research and development costs under the Alexion agreement. 
As of December 31, 2016, the Company has recorded unbilled accounts receivable of $3.6 million related to 
reimbursable research and development costs under the Alexion agreement for activities performed during the fourth 
quarter of 2016. 

9. Term Loan 

In May 2013, the Company entered into a loan and security agreement with Silicon Valley Bank (the 2013 

Term Loan), which provided for up to $5.0 million in funding, to be made available in three tranches. Loan advances 
accrue interest at a fixed rate of 2% above the prime rate. In June 2013, the Company drew the first loan advance of 
$1.0 million under the 2013 Term Loan and was required to make interest-only payments until April 1, 2014, and 
consecutive monthly payments of principal, plus accrued interest, over the remaining term through March 2017. In 
September 2013, the Company drew the second loan advance of $2.0 million under the 2013 Term Loan and was 
required to make interest-only payments until April 1, 2014, and consecutive monthly payments of principal, plus 
accrued interest, over the remaining term through March 2017. In June 2014, the Company drew the remaining 
$2.0 million advance under the 2013 Term Loan and was required to make interest-only payments until January 1, 2015, 
and consecutive monthly payments of principal, plus accrued interest, over the remaining term through December 2017. 
In November 2014, the Company amended the 2013 Term Loan to allow the Company to borrow an additional 
$5.0 million (the 2014 Term Loan). The Company accounted for the amendment as a modification to the existing 2013 
Term Loan. The Company immediately drew the additional $5.0 million under the 2014 Term Loan and was required to 
make interest-only payments until December 1, 2015, and consecutive monthly payments of principal, plus accrued 
interest, over the remaining term through November 2018. The Company is required to pay a fee of 4% of the total loan 
advances at the end of the term of each of the 2013 Term Loan and the 2014 Term Loan. The fee is being accreted to 
interest expense over the term of the 2013 Term Loan and the 2014 Term Loan. In the event of prepayment, the 

F-19 

 
Company is obligated to pay 1% to 2% of the amount of the outstanding principal depending upon the timing of the 
prepayment. There are no financial covenants associated with the loan and security agreement.   

The 2013 Term Loan and 2014 Term Loan are collateralized by a blanket lien on all corporate assets, excluding 
intellectual property, and by a negative pledge of the Company’s intellectual property. The term loan contains covenants, 
including restrictions on dividends and default provisions. The 2013 Term Loan and 2014 Term Loan contain customary 
default provisions that include material adverse events, as defined therein. The Company has determined that the risk of 
subjective acceleration under the material adverse events clause is remote and therefore has classified the outstanding 
principal in current and long-term liabilities based on scheduled principal payments. 

The Company assessed all terms and features of the 2013 Term Loan and the 2014 Term Loan in order to 

identify any potential embedded features that would require bifurcation. As part of this analysis, the Company assessed 
the economic characteristics and risks of the term loan, including put and call features. The Company determined that all 
features of each of the 2013 Term Loan and the 2014 Term Loan are clearly and closely associated with a debt host and 
do not require bifurcation as a derivative liability, or the fair value of the feature is immaterial to the Company’s 
financial statements. The Company will continue to reassess the features on a quarterly basis to determine if they require 
separate accounting. 

Scheduled monthly principal payments on the term loan, as of December 31, 2016, are as follows (in 

thousands): 

2017 
2018 
Total 

10. Warrants 

     2,583  
     1,528  
$    4,111  

In connection with the 2013 Term Loan, the Company issued a warrant to Silicon Valley Bank to purchase 

150,000 shares of Series A convertible preferred stock at an exercise price of $1.00 per share (the Series A Warrant). In 
connection with the 2014 Term Loan, the Company issued an additional warrant to Silicon Valley Bank to purchase 
83,333 shares of Series B convertible preferred stock at an exercise price of $1.20 per share (the Series B Warrant). Both 
warrants were exercisable immediately and have a ten-year life. 

The Company initially valued the Series A Warrant and the Series B Warrant at issuance and at the balance 

sheet dates using the Black-Scholes option pricing model. The significant assumptions used in estimating the fair value 
of the warrants include the volatility of the stock underlying the warrant, risk-free interest rate, estimated fair value of 
the preferred stock underlying the warrant, and the estimated term of the warrant. The fair value of the preferred stock 
underlying the warrants was estimated using the implied value from the common stock valuations on those dates.   

In accordance with ASC 480, the characteristics of these warrants and the rights and privileges of the 

underlying preferred stock resulted in the classification of these warrants as a liability, and they were re-measured to 
the-then current fair value at each balance sheet date through the completion of the IPO. Re-measurement gains or losses 
were recorded in other income (expense) in the statements of operations and comprehensive loss. Changes in the fair 
value of the warrants represented a recurring measurement that was classified within Level 3 of the fair value hierarchy 
wherein fair value is estimated using significant unobservable inputs. The Company recorded $0.4 million of expense 
associated with the change in fair value of the warrants in the year ended December 31, 2015 equal to the change in fair 
value of the warrants from December 31, 2014 to May 5, 2015.   

F-20 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
Upon completion of the IPO, the Series A Warrant became exercisable for 27,272 shares of the common stock 

at an exercise price of $5.50 per share, and the Series B Warrant became exercisable for 15,151 shares of the common 
stock at an exercise price of $6.60 per share. On the date of the conversion of the warrants, the Company revalued the 
outstanding warrants using the Black-Scholes option pricing model with the following assumptions:   

Fair value of underlying instrument 
Expected volatility 
Expected term (in years) 
Risk-free interest rate 
Expected dividend yield 

  Series A Warrant  
May 5, 
2015 

Series B Warrant    
May 5, 
2015 

     $ 

  20.82     $ 
  91.58 %      
  8.1  
  2.06 %      
  — %      

  20.82    
  87.75 %
  9.5  
  2.19 %
  — %

The fair value of the warrants at May 5, 2015 was $0.8 million and the Company reclassified the balance to 

additional paid-in capital. 

On May 13, 2015, Silicon Valley Bank exercised the Series A Warrant and the Series B Warrant pursuant to the 

cashless exercise feature of the warrants. In connection with the exercise of the Series A Warrant under the 2013 Term 
Loan, the Company issued 21,281 shares of common stock to Silicon Valley Bank. Warrants to purchase 5,991 shares of 
common stock were cancelled as payment for the aggregate exercise price of the Series A Warrant to Silicon Valley 
Bank. In connection with the exercise of the Series B Warrant under the 2014 Term Loan, the Company issued 11,157 
shares of common stock. Warrants to purchase 3,994 shares of common stock were cancelled as payment for the 
aggregate exercise price of the Series B Warrant. 

   The Company recorded a debt discount upon issuance of the warrants, which is being accreted as interest 

expense over the remaining term of the loan. The Company recorded interest expense related to the Series A Warrant 
and the Series B Warrant of less than $0.1 million in each of the years ended December 31, 2016, 2015 and 2014. 

11. Stock Awards 

2015 Stock Option and Incentive Plan 

In 2015, the Company’s board of directors and stockholders approved the 2015 Stock Option and Incentive 
Plan (the 2015 Plan), which replaced the Company’s 2011 Stock Option and Grant Plan, as amended (the 2011 Plan). 
The 2015 Plan includes incentive stock options, nonstatutory stock options, stock appreciation rights, restricted stock, 
restricted stock units, unrestricted stock, performance share awards and cash-based awards. The Company initially 
reserved a total of 1,460,084 shares of common stock for the issuance of awards under the 2015 Plan. The 2015 Plan 
provides that the number of shares reserved and available for issuance under the 2015 Plan will be cumulatively 
increased on January 1 of each calendar year by 4% of the number of shares of common stock issued and outstanding on 
the immediately preceding December 31 or such lesser amount as specified by the compensation committee of the board 
of directors. For the calendar year beginning January 1, 2016 and 2017, the number of shares reserved for issuance under 
the 2015 Plan was increased by 1,087,842 and 1,325,019 shares, respectively. In addition, the total number of shares 
reserved for issuance is subject to adjustment in the event of a stock split, stock dividend or other change in our 
capitalization. At December 31, 2016, there were 1,551,519 shares available for future grant under the 2015 Plan.   

Awards 

Options and restricted stock awards granted by the Company generally vest ratably over four years, with a 

one-year cliff for new employee awards, and are exercisable from the date of grant for a period of ten years.   

F-21 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
  
  
 
  
 
  
 
A summary of the Company’s unvested restricted stock and related information follows: 

Unvested at December 31, 2015 

Vested 
Repurchased 

Unvested at December 31, 2016 

  Weighted-Average  
Grant Date 
Fair Value 

Shares 

  130,495   $ 
  (126,741) 
  (1,629) 
  2,125  

  0.60  
  0.59  
  0.55  
  1.25  

The total fair value of restricted stock that vested during the years ended December 31, 2016, 2015 and 2014 

was $2.7 million, $4.9 million and $1.5 million, respectively.   

A summary of the Company’s stock option activity and related information follows: 

Outstanding at December 31, 2015 

Granted 
Exercised 
Canceled 

Outstanding at December 31, 2016 
Exercisable at December 31, 2016 
Vested and expected to vest at December 31, 2016(1) 

    Weighted-      Remaining       Aggregate 
Intrinsic 
  Contractual  
  Average 
Life 
  Exercise 
Value(2) 
  (in thousands)  
(in Years) 
Price 
  37,008  

  8.76   $ 

Shares 

     1,802,802   $    5.88   
    19.75  
     1,077,013  
  3.60  
  (150,230)  
  6.88  
  (106,844)  
     2,622,741   $   11.67   
  883,660   $    6.93   
     2,570,522   $   11.56   

  8.30   $ 
  7.64   $ 
  8.29   $ 

  44,025  
  18,662  
  43,382  

(1) 

(2) 

Represents the number of vested options as of December 31, 2016, plus the number of unvested options 
expected to vest as of December 31, 2016 based on a forfeiture rate of 2.5%. 

Intrinsic value represents the amount by which the fair market value as of December 31, 2016 of the underlying 
common stock exceeds the exercise price of the option. 

The fair value of stock options is estimated on the grant date using the Black-Scholes option-pricing model 

based on the following weighted average assumptions: 

Year Ended   

Risk-free interest rate 
Expected dividend yield 
Expected term (years) 
Expected stock price volatility 

  December 31, 2016   December 31, 2015   December 31, 2014  
  1.92 %
  — %
  6.1  
  92.99 %

  1.55 %   
  — %   
  6.0  
  75.94 %   

  1.66 % 
  — % 
  6.0  
  85.43 % 

The weighted-average grant date fair value of options granted in the years ended December 31, 2016, 2015 and 

2014 was $13.06, $8.55 and $3.46, respectively. The total intrinsic value of options exercised in the years ended 
December 31, 2016, 2015 and 2014 was $3.1 million, $6.8 million and $0.1 million, respectively.   

Total stock-based compensation expense recognized for all stock-based compensation awards in the statements 

of operations and comprehensive loss is as follows (in thousands): 

Research and development 
General and administrative 
Total stock-based compensation expense 

Year Ended   
December 31,  
2015 

2016 
  2,674       $    2,148 
     3,032 
  3,466  
$    5,180 
  6,140  

      $ 

$ 

2014 
$    1,052 
     1,274 
$    2,326 

F-22 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
     
     
  
  
  
  
  
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
 
  
 
 
 
  
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
  
  
 
 
 
 
 
  
  
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
    
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
     
 
 
  
 
 
At December 31, 2016, there was $15.0 million of total unrecognized compensation cost related to non-vested 

stock awards, which is expected to be recognized over a weighted-average period of 2.39 years. Due to an operating loss, 
the Company does not record tax benefits associated with stock-based compensation or option exercises. Tax benefit will 
be recorded when realized. 

2015 Employee Stock Purchase Plan 

In 2015, the Company’s board of directors and stockholders approved the 2015 Employee Stock Purchase Plan 

(the 2015 ESPP), which became effective upon the closing of the IPO in May 2015. The Company initially reserved a 
total of 243,347 shares of common stock for issuance under the 2015 ESPP. The 2015 ESPP provides that the number of 
shares reserved and available for issuance under the 2015 ESPP will be cumulatively increased on January 1 of each 
calendar years by 1% of the number of shares of common stock issued and outstanding on the immediately preceding 
December 31 or such lesser amount as specified by the compensation committee of the board of directors. For the 
calendar year beginning January 1, 2016 and 2017, the number of shares reserved for issuance under the 2015 ESPP was 
increased by 271,960 and 331,254 shares. The Company issued 23,325 shares under the ESPP during the year ended 
December 31, 2016.   

12. Net Loss per Share   

Basic net loss per share applicable to common stockholders is calculated by dividing net loss applicable to 

common stockholders by the weighted average shares outstanding during the period, without consideration for common 
stock equivalents. Net loss applicable to common stockholders is calculated by adjusting the net loss of the Company for 
cumulative preferred stock dividends. Diluted net loss per share applicable to common stockholders is calculated by 
adjusting weighted average shares outstanding for the dilutive effect of common stock equivalents outstanding for the 
period. For purposes of the dilutive net loss per share applicable to common stockholders calculation, convertible 
preferred stock, warrants, stock options, and unvested restricted stock are considered to be common stock equivalents 
but are excluded from the calculation of diluted net loss per share applicable to common stockholders, as their effect 
would be anti-dilutive; therefore, basic and diluted net loss per share applicable to common stockholders were the same 
for all periods presented as a result of the Company’s net loss.   

The following common stock equivalents were excluded from the calculation of diluted net loss per share 

applicable to common stockholders for the periods indicated because including them would have had an anti-dilutive 
effect: 

Year Ended 
December 31,  
2015 

2014 

2016 

Convertible preferred stock 
Warrants 
Stock options 
Unvested restricted stock 

Total 

  —  
  —   

  —    15,467,479  
  42,423  
  — 
  1,501,912  
     2,622,741      1,802,802 
  425,279  
  130,495 
     2,624,866      1,933,297    17,437,093  

  2,125   

The weighted average number of common shares used in net loss per share applicable to common stockholders 

on a basic and diluted basis were 27,491,669, 18,235,614 and 1,420,518 for the years ended December 31, 2016, 2015 
and 2014, respectively. 

13. Convertible Preferred Stock 

In January and September 2013, the Company issued 10,000,000 and 5,000,000 shares, respectively, of Series 
A Convertible Preferred Stock at a price of $1.00 per share, resulting in net proceeds of $15.0 million. In January 2014, 
the Company issued a total of 20,916,663 shares of Series B Convertible Preferred Stock at $1.20 per share for net 
proceeds of $25.0 million. In November 2014, the Company issued a total of 24,154,589 shares of Series C Convertible 
Preferred Stock at $2.07 per share for net proceeds of $49.9 million. 

Upon the closing of the IPO in May 2015, all of the Company’s outstanding convertible preferred stock 

automatically converted into 15,467,479 shares of common stock. In addition, upon the completion of the IPO, the 

F-23 

 
 
 
 
  
 
 
  
 
  
    
    
 
  
 
  
  
 
Company’s board of directors was authorized, without action by the stockholders, to designate and issue up to an 
aggregate of 5,000,000 shares of preferred stock in one or more series. The board of directors can designate the rights, 
preferences and privileges of the shares of each series and any of its qualifications, limitations or restrictions. 

As of December 31, 2016, no shares of preferred stock were issued or outstanding. 

14. Income Taxes   

A reconciliation of the U.S. statutory income tax rate to the Company’s effective tax rate is as follows for the 

years ended December 31, 2016, 2015 and 2014: 

Year Ended 

December 31, 

Federal income tax (benefit) at statutory rate 
Permanent differences 
Federal research and development credits 
Federal orphan drug credits 
State income tax, net of federal benefit 
Other 
Change in valuation allowance 
Effective income tax rate 

2016 

2015 
       34.00 %      34.00 %      34.00 %

2014 

  (2.74) 
  1.02  
  6.63  
  4.81  
  (0.78) 
  (42.94) 

  (3.30) 
  1.09  
  0.55  
  4.72  
  0.56  
  (37.62) 

  (1.87) 
  1.3  
  —  
  4.93  
  0.7  
  (39.06) 

  — % 

  — % 

  — %

The Company had net losses in all periods presented and therefore has not recognized any federal or state 

income tax expense. 

The Company’s deferred tax assets and liabilities consist of the following: 

Year Ended 
December 31,  

2016 

2015 

2014 

Deferred tax assets: 

Net operating loss carryforwards 
Research and development credit carryforwards 
Orphan drug credit carryforwards 
Accrued expenses and other 
Deferred revenue 
Deferred lease incentive 
Deferred rent 

Total gross deferred tax asset 
Deferred tax liability 
Debt discount 
Valuation allowance 
Net deferred tax asset 

  2,829    
  289 
  1,374    
  — 
  1,551 

  $    69,443   $    48,291  $    30,603  
  1,949  
  —  
  628  
  —  
  —  
  54  
  33,234  
  (85) 
  (74) 
     (52,924)      (33,075) 
—  

  3,833  
  5,095  
  2,914  
  2,627  
  1,324  
  366  
  85,602  
  (1,535) 
  (14) 
     (84,053) 

  331    
  54,665    
  (1,702)   
  (39)   

  —   $ 

  —  $ 

  $ 

Management has evaluated the positive and negative evidence bearing upon the realizability of its deferred tax 
assets, and has determined that it is more likely than not that the Company will not recognize the benefits of its federal 
and state deferred tax assets, and as a result, a valuation allowance of $84.1 million, $52.9 million and $33.1 million has 
been established at December 31, 2016, 2015 and 2014, respectively. The change in the valuation allowance was $31.1 
million, $19.8 million and $15.7 million for the years ended December 31, 2016, 2015 and 2014, respectively. The 
Company has incurred net operating losses (NOL) since inception. At December 31, 2016, the Company had federal and 
state NOL carryforwards of $179.8 million and $177.3 million, respectively, which expire beginning in 2030. As of 
December 31, 2016, the Company had federal and state research and development tax credit carryforwards of 
$2.8 million and $1.5 million, respectively, which expire beginning in 2025. The Company had net NOLs related to 
stock compensation in the amount of $2.7 million that is not included in the deferred tax assets. When the excess stock-
based compensation related to NOL carryover tax assets are realized, the benefit will be credited directly to equity. As of 

F-24 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
     
 
  
  
  
 
  
  
  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
        
        
    
 
 
  
  
 
 
 
  
  
 
 
 
 
 
  
  
 
  
  
 
  
  
 
  
  
 
December 31, 2016, the Company had federal orphan drug credits of $5.1 million, which expire beginning in 2035 and 
state investment tax credits of $0.1 million, which expire beginning in 2018.   

The Internal Revenue Code of 1986, as amended (the Code), provides for a limitation of the annual use of net 
operating losses and other tax attributes (such as research and development tax credit carryforwards) following certain 
ownership changes (as defined by the Code) that could limit the Company’s ability to utilize these carryforwards. At this 
time, the Company has not completed a study to assess whether an ownership change under Section 382 of the Code has 
occurred, or whether there have been multiple ownership changes since the Company’s formation. The Company may 
have experienced ownership changes, as defined by the Code, as a result of past financing transactions. Accordingly, the 
Company’s ability to utilize the aforementioned carryforwards may be limited. In addition, U.S. tax laws limit the time 
during which these carryforwards may be applied against future taxes. Therefore, the Company may not be able to take 
full advantage of these carryforwards for federal or state income tax purposes. 

Interest and penalty charges, if any, related to unrecognized tax benefits would be classified as income tax 

expense in the accompanying statements of operations and comprehensive loss. As of December 31, 2016 and 2015, the 
Company has no accrued interest related to uncertain tax positions. In many cases, the Company’s uncertain tax 
positions are related to years that remain subject to examination by relevant tax authorities. Since the Company is in a 
loss carryforward position, it is generally subject to examination by the U.S. federal, state, and local income tax 
authorities for all tax years in which a loss carryforward is available. 

For all years through December 31, 2016, the Company generated research credits but has not conducted a 
study to document the qualified activities.    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. 

15. Commitments 

The Company leased its former corporate headquarters under an operating lease that expired on November 1, 

2015. On February 1, 2015, the Company’s option to extend the term of the lease for an additional three-year period 
expired. The Company did not exercise its option to extend the term of the lease.   

On February 12, 2015, the Company entered into a lease for approximately 38,500 rentable square feet of office 

and laboratory space in Cambridge, Massachusetts, which the Company gained control over on June 15, 2015, and 
occupancy commenced in October 2015. The lease ends on October 31, 2022. The Company has an option to extend the 
lease for five additional years. The lease has a total commitment of $17.8 million over the seven year term. The 
Company has agreed to pay an initial annual base rent of approximately $2.3 million, which rises periodically until it 
reaches approximately $2.8 million. The Company is recording rent expense on a straight-line basis through the end of 
the lease term. The Company has recorded deferred rent on the consolidated balance sheet at December 31, 2016, 
accordingly. The lease provides the Company with an allowance for leasehold improvements of $4.3 million. The 
Company accounts for leasehold improvement incentives as a reduction to rent expense ratably over the lease term. The 
balance from the leasehold improvement incentives is included in lease incentive obligations on the balance sheets. The 
lease agreement required the Company to pay a security deposit of $1.3 million, which is recorded in restricted cash, 
included in long term assets, on the Company’s balance sheet. 

The future minimum lease payments at December 31, 2016, are as follows (in thousands): 

2017 
2018 
2019 
2020 
2021 
Thereafter 

Total minimum lease payments 

F-25 

  2,396  
  2,468  
  2,542  
  2,618  
  2,697  
  2,303  
$    15,024  

 
 
 
 
 
 
 
 
 
 
 
The Company records rent expense under its lease agreements on a straight line basis. For the years ended 

December 31, 2016, 2015, and 2014, rent expense was $1.8 million, $1.8 million, and $0.8 million, respectively. 

16. Related-Party Transactions 

The Company has received consulting and management services from one of its investors, Third Rock 
Ventures LLC (Third Rock Ventures). The Company paid Third Rock Ventures $0.4 million and incurred expenses of 
$0.3 million for these services during    the year ended December 31, 2014. The Company did not receive any consulting 
services from Third Rock Ventures during the years ended December 31, 2016 and 2015. 

17. Defined Contribution Benefit Plan 

The Company maintains a 401(k) plan for employees (the 401(k) Plan). The 401(k) Plan is intended to qualify 

under Section 401(k) of the Internal Revenue Service Code of 1986, as amended, so that contributions to the 401(k) Plan 
by employees or by the Company, and the investment earnings thereon, are not taxable to the employees until withdrawn 
from the 401(k) Plan, and so that contributions by the Company, if any, will be deductible by the Company when made. 
Under the 401(k) Plan, employees may elect to reduce their current compensation by up to the statutorily prescribed 
annual limit and to have the amount of such reduction contributed to the 401(k) Plan. The 401(k) Plan permits the 
Company to make contributions up to the limits allowed by law on behalf of all eligible employees. Effective September 
1, 2015, the Company instituted an employer match of 50% of eligible contributions up to 6% of employee 
contributions. For the years ended December 31, 2016 and 2015, the Company contributed $0.4 million and $0.1 
million, respectively, to the 401(k) Plan.   

18. Selected Quarterly Financial Data (unaudited) 

The following table contains selected quarterly financial information for 2016 and 2015. The Company believes 
that the following information reflects all normal recurring adjustments necessary for a fair statement of the information 
for the periods presented. The operating results for any quarter are not necessarily indicative of results for any future 
period. 

March 31, 2016 

June 30, 2016 

  September 30, 2016   

  December 31, 2016 

Three Months Ended 

Total revenue 
Total operating expenses 
Total other income (expense), net 
Net loss 
Net loss applicable to common 

stockholders 

$ 

$ 

$ 

Net loss per share applicable to 

common stockholders — basic and 
diluted 

$ 

Total revenue 
Total operating expenses 
Total other expense, net 
Net loss 
Net loss applicable to common 

stockholders 

$ 

$ 

$ 

Net loss per share applicable to 

common stockholders — basic and 
diluted 

$ 

(in thousands, except per share data) 
 $ 

  6,160   $ 

  6,856  $ 

  22,281 
  (79)
  (15,504) $ 

  7,065 
  25,961 
  2 
  (18,894)

  23,043  
  49  
  (16,834)  $ 

 $ 

  7,691 
  29,064 
  110 
  (21,263)

  (15,504) $ 

  (18,894)

 $ 

  (16,834)  $ 

  (21,263)

  (0.57) $ 

  (0.70)

 $ 

  (0.62)  $ 

  (0.75)

Three Months Ended 

March 31, 2015 

June 30, 2015 

  September 30, 2015   

  December 31, 2015 

(in thousands, except per share data) 

  652   
  12,002  $ 
  (222)
  (11,572) $ 

  2,687   

  15,083 
  (584)
  (12,980)

 $ 

 $ 

  3,426   
  15,903   $ 
  (165) 
  (12,642)  $ 

  4,635 
  20,056 
  (154)
  (15,575)

  (13,842) $ 

  (13,863)

 $ 

  (12,642)  $ 

  (15,575)

  (8.23) $ 

  (0.81)

 $ 

  (0.47)  $ 

  (0.58)

F-26 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
Exhibit 
Number 

3.1 

3.2 

4.1 

4.2 

10.1 

10.2 

10.3 

10.4 

10.5# 

10.6# 

10.7# 

10.8† 

10.9# 

10.10# 

10.11# 

10.12# 

10.13# 

10.14 

EXHIBIT INDEX 

Description of Exhibit 

Fifth Amended and Restated Certificate of 
Incorporation of the Registrant 

Incorporated by Reference 

  Form 
  10-Q    001-37359   

File No. 

Exhibit 
Number 
3.1 

Filing Date 
  November 9, 2015 

  Amended and Restated Bylaws of the Registrant 

  10-Q    001-37359   

  Specimen Common Stock Certificate 

  S-1/A   333-202938  

3.2 

4.1 

4.4 

  November 9, 2015 

  April 20, 2015 

  March 23, 2015 

S-1 

 333-202938  

Second Amended and Restated Investors’ Rights 
Agreement, dated as of November 7, 2014, by and 
among the Registrant and the Investors listed therein 

2011 Stock Option and Grant Plan, as amended, and 
forms of award agreements thereunder 

2015 Stock Option and Incentive Plan and forms of 
award agreements thereunder 

S-1 

 333-202938  

10.1 

  March 23, 2015 

  10-K    001-37359   

10.2 

  March 11, 2016 

  2015 Employee Stock Purchase Plan 

S-8 

 333-203749  

99.3 

  April 30, 2015 

Lease Agreement, dated February 11, 2015, by and 
between the Registrant and 38 Sidney Street Limited 
Partnership 

Employment Agreement, dated November 6, 2015, 
by and between the Registrant and Jeffrey W. Albers 

Employment Agreement, dated November 6, 2015, 
by and between the Registrant and Christoph 
Lengauer 

Employment Agreement, dated November 6, 2015, 
by and between the Registrant and Anthony L. Boral 

Resignation Agreement, dated August 13, 2015, by 
and between the Registrant and Kyle D. Kuvalanka 

Employment Agreement, dated March 10, 2016, by 
and between the Registrant and Kathryn Haviland 

Employment Agreement, dated September 6, 2016, 
by and between the Registrant and Tracey L. McCain 

Employment Agreement, dated November 9, 2016, 
by and between the Registrant and Marion Dorsch 

First Amendment to Employment Agreement, dated 
November 9, 2016, by and between the Registrant 
and Christoph Lengauer 

S-1 

 333-202938  

10.4 

  March 23, 2015 

  10-Q    001-37359   

10.2 

  November 9, 2015 

  10-Q    001-37359   

10.3 

  November 9, 2015 

  10-Q    001-37359   

10.4 

  November 9, 2015 

  10-Q    001-37359   

10.1 

  November 9, 2015 

  10-K    001-37359   

10.9 

  March 11, 2016 

  10-Q    001-37359   

10.3 

  November 10, 2016 

8-K 

  001-37359   

10.1 

  November 14, 2016 

8-K 

  001-37359   

10.2 

  November 14, 2016 

Change in Control Agreement, dated March 10, 2016, 
by and between the Registrant and Michael Landsittel 

  10-K    001-37359    10.10 

  March 11, 2016 

Loan and Security Agreement, dated May 24, 2013, 
by and between the Registrant and Silicon Valley 
Bank, as amended by First Amendment, dated 
January 21, 2014, Second Amendment, dated June 
27, 2014, Third Amendment, dated November 4, 
2014 and Consent and Fourth Amendment, dated 
December 22, 2015 

  10-K    001-37359    10.11 

  March 11, 2016 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exhibit 
Number 

10.15† 

10.16† 

10.17† 

10.18 

10.19† 

10.20† 

10.21 

10.22 

Description of Exhibit 

Research, Development & Commercialization 
Agreement, dated March 2, 2015, by and between the 
Registrant and Alexion Pharma Holding 

Incorporated by Reference 

Exhibit 
  Form 
Number 
File No. 
  S-1/A   333-202938   10.10 

Filing Date 

  April 10, 2015 

Collaboration and License Agreement, effective 
March 14, 2016, by and among F. Hoffmann-La 
Roche Ltd, Hoffmann-La Roche Inc. and the 
Registrant, as amended by Amendment to 
Collaboration and License Agreement, effective April 
15, 2016 

  10-Q/A   001-37359   

Second Amendment to Collaboration and License 
Agreement, effective April 27, 2016, by and among 
F. Hoffmann-La Roche Ltd, Hoffmann-La Roche Inc. 
and the Registrant 

  10-Q    001-37359   

Third Amendment to Collaboration and License 
Agreement, effective August 4, 2016, by and among 
F. Hoffmann-La Roche Ltd, Hoffmann-La Roche Inc. 
and the Registrant 

  10-Q    001-37359   

Master Collaboration Agreement, effective March 1, 
2016, by and between Ventana Medical Systems, Inc. 
and the Registrant, including Project Schedule #1, 
effective March 1, 2016, Project Agreement #2, 
effective March 11, 2016, and Project Schedule #3, 
effective April 8, 2016 

  10-Q/A   001-37359   

10.2 

July 22, 2016 

10.1 

  August 9, 2016 

10.1 

  November 10, 2016 

10.1 

July 22, 2016 

Master Collaboration Agreement, dated August 22, 
2016, between the Registrant and QIAGEN 
Manchester Limited, including Project Schedule #1, 
dated August 22, 2016 

Form of Indemnification Agreement entered into 
between the Registrant and its directors 

Form of Indemnification Agreement entered into 
between the Registrant and its officers 

  10-Q    001-37359   

10.2 

  November 10, 2016 

S-1 

 333-202938   10.11 

  March 23, 2015 

S-1 

 333-202938   10.12 

  March 23, 2015 

10.23 

  Senior Executive Cash Incentive Bonus Plan 

  10-K    001-37359    10.15 

  March 11, 2016 

21.1 

23.1 

31.1 

31.2 

32.1 

  Subsidiaries of the Registrant 

  Consent of Ernst & Young LLP 

Certification of Principal Executive Officer pursuant 
to Rule 13a-14(a) or Rule 15d-14(a) of the Exchange 
Act, as adopted pursuant to Section 302 of the 
Sarbanes-Oxley Act of 2002 

Certification of Principal Financial Officer pursuant 
to Rule 13a-14(a) or Rule 15d-14(a) of the Exchange 
Act, as adopted pursuant to Section 302 of the 
Sarbanes-Oxley Act of 2002 

  Certifications of Principal Executive Officer and 
Principal Financial Officer pursuant to 18 U.S.C. 
Section 1350, as adopted pursuant to Section 906 of 
the Sarbanes-Oxley Act of 2002 

101.INS 

XBRL Instance Document 

* 

* 

* 

* 

+ 

* 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Incorporated by Reference 

Exhibit 
Number 
101.SCH 

101.CAL 

Description of Exhibit 

  Form 

File No. 

XBRL Taxonomy Extension Schema Document 

XBRL Taxonomy Extension Calculation Linkbase 
Document 

101.DEF 

XBRL Taxonomy Extension Definition Linkbase 
Document 

101.LAB 

XBRL Taxonomy Extension Label Linkbase 
Document 

101.PRE 

XBRL Taxonomy Extension Presentation Linkbase 
Document 

Exhibit 
Number 

Filing Date 
* 

* 

* 

* 

* 

#  Indicates management contract or compensatory plan or arrangement. 

†  Confidential treatment requested as to portions of the exhibit. Confidential materials omitted and filed separately with 

the Securities and Exchange Commission. 

*  Filed herewith. 

+  The certifications furnished in Exhibit 32.1 hereto are deemed to be furnished with this Annual Report on Form 10-K 
and will not be deemed to be “filed” for purposes of Section 18 of the Exchange Act. Such certifications will not be 
deemed to be incorporated by reference into any filing under the Securities Act or the Exchange Act, except to the 
extent that the Registrant specifically incorporates it by reference. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Subsidiaries of the Registrant 

Entity 

  State of Incorporation or Organization 

Blueprint Medicines Security Corporation 

Massachusetts 

Exhibit 21.1 

 
 
 
 
 
 
Exhibit 23.1 

Consent of Independent Registered Public Accounting Firm 

We consent to the incorporation by reference in the following Registration Statements: 

(1)  Registration Statement (Form S-3 No. 333-211266) of Blueprint Medicines Corporation, 

(2)  Registration Statement (Form S-8 No. 333-203749) pertaining to the 2011 Stock Option and Grant 
Plan, 2015 Stock Option and Incentive Plan, and 2015 Employee Stock Purchase Plan of Blueprint 
Medicines Corporation, and 

(3)  Registration Statement (Form S-8 No. 333-210125) pertaining to the 2015 Stock Option and Incentive 

Plan and 2015 Employee Stock Purchase Plan of Blueprint Medicines Corporation; 

of our report dated March 9, 2017, with respect to the consolidated financial statements of Blueprint Medicines 
Corporation included in this Annual Report (Form 10-K) of Blueprint Medicines Corporation for the year ended 
December 31, 2016. 

/s/ Ernst & Young LLP 

Boston, Massachusetts 
March 9, 2017 

Exhibit 31.1 

I, Jeffrey W. Albers, certify that: 

CERTIFICATIONS 

1. 

2. 

I have reviewed this Annual Report on Form 10-K of Blueprint Medicines Corporation; 

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 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)) 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) 

(Paragraph omitted pursuant to SEC Release Nos. 33-8238/34-47986 and 33-8392/34-

49313); 

(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 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 9, 2017 

By:/s/ Jeffrey W. Albers 
Jeffrey W. Albers 
President and Chief Executive Officer 
(Principal Executive Officer) 

 
 
 
 
 
 
 
 
Exhibit 31.2 

I, Michael Landsittel, certify that:

CERTIFICATIONS 

1. 

2. 

I have reviewed this Annual Report on Form 10-K of Blueprint Medicines Corporation; 

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 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)) 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) 

(Paragraph omitted pursuant to SEC Release Nos. 33-8238/34-47986 and 33-8392/34-

49313); 

(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 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 9, 2017 

By:/s/ Michael Landsittel 
  Michael Landsittel 
  Vice President of Finance 

(Principal Financial and Accounting Officer) 

 
 
 
 
 
 
CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, 
AS ADOPTED PURSUANT TO 
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 

Exhibit 32.1 

In connection with the Annual Report on Form 10-K of Blueprint Medicines Corporation (the “Company”) for 

the year ended December 31, 2016 as filed with the Securities and Exchange Commission on the date hereof (the 
“Report”), each of the undersigned officers of the Company hereby certifies, pursuant to 18 U.S.C. Section 1350, that to 
his knowledge: 

(1)  

(2)  

the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange 
Act of 1934; and 

the information contained in the Report fairly presents, in all material respects, the financial condition 
and results of operations of the Company. 

Date: March 9, 2017 

Date: March 9, 2017 

By:  /s/ Jeffrey W. Albers 
Jeffrey W. Albers 
President and Chief Executive Officer 
(Principal Executive Officer) 

By:  /s/ Michael Landsittel 
  Michael Landsittel 

Vice President of Finance 
(Principal Financial and Accounting Officer) 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
To our

stockholders

At Blueprint Medicines, we are striving to 

create a blueprint for a healthier tomorrow.

We seek to create transformative medicines for genomically 

defined patient populations by specifically targeting the 

molecular drivers of disease. By leveraging our proprietary 

compound library and genomics expertise, we are able to 

rapidly move from the bench to clinical proof-of-concept. 

Our culture and values put patients first, and we are driven by a 

deep sense of urgency to develop new medicines for unserved 

or underserved patients. In 2016, we generated early data that 

show our scientific approach could be prolific and may 

represent a substantial opportunity for developing new and 

transformative drugs for cancer, rare genetic diseases and 

other disease areas including cancer immunology.

Executive Leadership
Jeff Albers
Chief Executive Officer and President

Anthony L. Boral, M.D., Ph.D.
Chief Medical Officer

Marion Dorsch, Ph.D.
Chief Scientific Officer

Debbie Durso-Bumpus
Senior Vice President, Human Resources

Board of Directors
Daniel Lynch
Chairman, Blueprint Medicines Corporation

Jeff Albers
Chief Executive Officer and President, 
Blueprint Medicines Corporation

Alexis Borisy
Partner, Third Rock Ventures

Lonnel Coats
Chief Executive Officer and President, 
Lexicon Pharmaceuticals, Inc.

George D. Demetri, M.D.
Professor of Medicine, Harvard Medical School, 
and Director of the Center for Sarcoma and Bone 
Oncology, Dana-Farber Cancer Institute

Annual Meeting of Stockholders
The 2017 annual meeting of stockholders will be 
held on Tuesday, June 20, 2017, at 3:00 p.m. EDT at 
Blueprint Medicines’ headquarters, which are located 
at 38 Sidney Street, Suite 200, Cambridge, MA 02139.

SEC Form 10-K
A copy of Blueprint Medicines’ Form 10-K filed with 
the Securities and Exchange Commission is available 
free of charge from the company’s Investor Relations 
Department by calling (617) 714-6674, emailing 
ir@blueprintmedicines.com or sending a written 
request to:

Investor Relations
Blueprint Medicines Corporation
38 Sidney Street, Suite 200
Cambridge, MA 02139

Kate Haviland
Chief Business Officer

Mike Landsittel
Vice President, Finance

Christoph Lengauer, Ph.D.
Executive Vice President

Tracey L. McCain, Esq.
Executive Vice President, Chief Legal Officer

Mark Goldberg, M.D.
Associate Professor of Medicine, 
Harvard Medical School

Nicholas Lydon, Ph.D.
Co-Founder, 
Blueprint Medicines Corporation

Charles A. Rowland, Jr.
Former Chief Executive Officer, 
Aurinia Pharmaceuticals Inc.

Lynn Seely, M.D.
Chief Executive Officer and President, 
Myovant Sciences, Inc.

Stock Listing
NASDAQ: BPMC

Independent Auditors
Ernst & Young LLP

Transfer Agent
The transfer agent is responsible, among other  things, for 
handling stockholder questions regarding lost stock 
certificates, address changes, including duplicate mailings, 
and changes in ownership or name in which shares are 
held. These requests may be directed to the transfer agent 
at the following address:

Computershare Trust Company, N.A. 
250 Royall Street
Canton, MA 02021
www-us.computershare.com/contactus

Cautionary Note Regarding Forward-Looking Statements
This annual report contains forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995, as amended, including, without limitation, statements regarding plans 
and timelines for the clinical development of BLU-285, BLU-554 and BLU-667, and Blueprint Medicines’ ability to implement those clinical development plans; plans and timelines for regulatory 
submissions, filings or discussions; plans and timelines for current or future discovery programs; plans and timelines for future collaborations, if any, with strategic partners; Blueprint Medicines’ 
future financial performance; expectations regarding potential milestones in 2017; expectations regarding Blueprint Medicines’ existing cash, cash equivalents and investments; and Blueprint 
Medicines’ strategy, business plans and focus. The words “may,” “will,” “could,” “would,” “should,” “expect,” “plan,” “anticipate,” “intend,” “believe,” “estimate,” “predict,” “project,” “potential,” “continue,” 
“target” and similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words. Any forward-looking statements 
in this annual report are based on management’s current expectations and beliefs and are subject to a number of risks, uncertainties and important factors that may cause actual events or results 
to differ materially from those expressed or implied by any forward-looking statements contained in this annual report, including, without limitation, risks and uncertainties related to the delay of 
any current or future clinical trials or the development of Blueprint Medicines’ drug candidates, including BLU-285, BLU-554 and BLU-667; Blueprint Medicines’ advancement of multiple early-stage 
efforts; Blueprint Medicines’ ability to successfully demonstrate the efficacy and safety of its drug candidates; the preclinical and clinical results for Blueprint Medicines’ drug candidates, which 
may not support further development of such drug candidates; actions or decisions of regulatory agencies or authorities, which may affect the initiation, timing and progress of current or future 
clinical trials; Blueprint Medicines’ ability to obtain, maintain and enforce patent and other intellectual property protection for any drug candidates it is developing; Blueprint Medicines’ ability to 
develop and commercialize companion diagnostics for its current and future drug candidates, including a companion diagnostic for BLU-554 with Ventana Medical Systems, Inc. and a companion 
diagnostic for BLU-285 with QIAGEN Manchester Limited; and the success of Blueprint Medicines’ rare genetic disease collaboration with Alexion Pharma Holding and its cancer immunotherapy 
collaboration with F. Hoffmann-La Roche Ltd and Hoffmann-La Roche Inc.

These and other risks and uncertainties are described in greater detail in the section entitled "Risk Factors" in Blueprint Medicines’ Annual Report on Form 10-K for the year ended December 31, 
2016, as filed with the Securities and Exchange Commission (SEC) on March 9, 2017, and other filings that Blueprint Medicines may make with the SEC in the future. Any forward-looking 
statements contained in this annual report represent Blueprint Medicines’ views only as of April 28, 2017, and should not be relied upon as representing its views as of any subsequent date. Except 
as required by law, Blueprint Medicines assumes no obligation to update or revise these forward-looking statements for any reason, even if new information becomes available in the future.

© Blueprint Medicines Corporation      April 28, 2017

B

L

U

E

P

R

I

N

T

M

E

D

I

C

I

N

E

S

C

O

R

P

O

R

A

T

I

O

N

2

0

1

6

A

N

N

U

A

L

R

E

P

O

R

T

Blueprint Medicines Corporation

38 Sidney Street, Suite 200

Cambridge, MA 02139

(617) 374-7580

blueprintmedicines.com

NASDAQ: BPMC

ANNUAL REPORT 

NASDAQ: BPMC