– Third Quarter 2021 Revenue of $23.2 Million, Including QINLOCK® (ripretinib) Net Product Revenue of $21.7 Million –  

– Top-line Results from INTRIGUE Phase 3 Study of QINLOCK in Patients with Second-line Gastrointestinal Stromal Tumor (GIST) Expected in the Fourth Quarter of 2021 –

– Approval from the European Medicines Agency (EMA) for QINLOCK Expected in the Fourth Quarter of 2021 – 

– Initiation of the Phase 3 MOTION Study of Vimseltinib in Patients with Tenosynovial Giant Cell Tumor (TGCT) Expected in the Fourth Quarter of 2021; Vimseltinib Granted Fast Track Designation by the U.S. Food and Drug Administration (FDA) –

Deciphera Pharmaceuticals, Inc. (NASDAQ:DCPH) today announced financial results for the third quarter ended September 30, 2021 and provided a corporate update.

“In the third quarter, we made tremendous progress expanding the reach of QINLOCK for patients with GIST around the world. In addition to obtaining the approval for this important medicine in Switzerland and Taiwan, we also received a positive CHMP opinion for QINLOCK in the EU, with approval expected before the end of the year. Finally, we remain on track to report top-line results from the Phase 3 INTRIGUE study in second-line GIST later this quarter.”

Mr. Hoerter continued, “At the European Society for Medical Oncology (ESMO) Congress 2021, we shared very encouraging data from both the vimseltinib and rebastinib programs demonstrating significant clinical activity in two diseases with high unmet medical needs. We plan to initiate the Phase 3 MOTION study of vimseltinib in tenosynovial giant cell tumor this quarter and expect to initiate a Phase 3 study of rebastinib in combination with paclitaxel in platinum-resistant ovarian cancer next year. The body of scientific evidence continues to build supporting the potential of our first-in-class ULK inhibitor, DCC-3116, to address a broad spectrum of cancers in which autophagy is upregulated and believed to play an important role in tumor growth and survival. The Phase 1/2 study of DCC-3116 is on track and, with the first-in-class program in this field, we are well positioned to explore the full potential of inhibiting autophagy in cancer.”

Third Quarter 2021 Highlights and Upcoming Milestones

• QINLOCK(ripretinib)
  • Recorded $21.7 million in QINLOCK net product revenue in the third quarter of 2021, including $20.0 million in U.S. sales of QINLOCK and $1.7 million in ex-U.S. sales of QINLOCK.
  • Presented data at the ESMO Congress 2021:
    • An exploratory evaluation of primary and secondary endpoints in the Phase 3 INVICTUS study, with a cutoff date of January 15, 2021, an additional 19 months after the primary analysis, demonstrated consistent progression-free survival (PFS) with no change since the primary data cut off, and improved median overall survival (OS) among patients receiving QINLOCK.
      • Median PFS was 6.3 months with QINLOCK compared to 1.0 month with placebo.
      • Median OS was 18.2 months with QINLOCK compared to 6.3 months with placebo.
    • Phase 1 study in patients with KIT-mutated or KIT-amplified melanoma.
  • Received approvals in Switzerland and Taiwan for the treatment of adult patients with advanced GIST who have received prior treatment with three or more kinase inhibitors, including imatinib.
  • Expects approval from the EMA for QINLOCK in the fourth quarter of 2021.
  • Expects to announce top-line results from the Phase 3 INTRIGUE study in the fourth quarter of 2021.
  • Expects to initiate a Phase 1b/2 study of QINLOCK in combination with binimetinib, a commercially available MEK inhibitor, in post-imatinib GIST patients in the fourth quarter of 2021.

• Vimseltinib
  • Presented updated data from the ongoing Phase 1/2 study in patients with TGCT at the ESMO Congress 2021, showing an encouraging ORR of 47% across all cohorts and a manageable safety and tolerability profile.
  • Expects to initiate the pivotal Phase 3 MOTION study of vimseltinib in the fourth quarter of 2021. MOTION is a two-part, randomized, double-blind, placebo-controlled study of vimseltinib to assess the efficacy and safety in patients with symptomatic TGCT who are not amenable to surgery. The primary endpoint of the study is ORR at week 25 as measured by RECIST v1.1 by blinded independent central review.
  • Granted Fast Track Designation by the FDA for the treatment of patients with symptomatic TGCT who are not amenable to surgery. This designation is designed to facilitate the development and expedite the review of drugs to treat serious conditions and fill an unmet medical need.

• Rebastinib
  • Presented updated data from the ongoing Phase 1b/2 study of rebastinib in combination with paclitaxel in the platinum-resistant ovarian cancer (PROC) cohort at the ESMO Congress 2021. Data showed promising results including median PFS of 9.1 months and an ORR of 38% (confirmed and unconfirmed) in heavily pretreated patients with PROC.
  • Received Orphan Drug Designation in the EU for the treatment of ovarian cancer based on a positive opinion issued by the EMA Committee for Orphan Medicinal Products (COMP).
  • Announced that the Company has begun planning for a pivotal study in PROC that is anticipated to start in 2022, subject to feedback from regulators.

• DCC-3116
  • Presented preclinical data at the AACR-NCI-EORTC International Conference on Molecular Targets and Cancer Therapeutics showing that DCC-3116 inhibits EGFR inhibitor-induced autophagy in multiple EGFR-mutant non-small cell lung cancer cell lines and decreased tumor burden in combination with osimertinib and afatinib in an EGFR mutant xenograft model.
  • Announced plans to present initial data from the dose escalation phase of the Phase 1 study in 2022.

Third Quarter Financial Results

• Revenue: Total revenue for the third quarter of 2021 was $23.2 million, which includes $21.7 million of net product revenue from sales of QINLOCK and $1.5 million of collaboration revenue comprised primarily of QINLOCK supply and royalty revenue under our license agreement with Zai Lab. Total revenue for the third quarter of 2020 was $15.5 million, which included $15.2 million of net product revenue from sales of QINLOCK and $0.3 million of collaboration revenue.

• Cost of Sales: Cost of sales was $0.9 million in the third quarter of 2021, which includes $0.2 million in cost of net product revenue for QINLOCK and $0.7 million in cost of collaboration revenue. Cost of sales was $0.1 million for the third quarter of 2020. Deciphera does not expect that the cost of sales as a percentage of net product sales of QINLOCK will increase significantly after the Company has sold all zero cost inventories and commenced the sales of inventories which will reflect the full cost of manufacturing. The Company expects to continue to sell the zero cost inventories of QINLOCK in the U.S. during 2021 and into 2022.

• R&D Expenses: Research and development expenses for the third quarter were $66.4 million, compared to $49.2 million for the same period in 2020. The increase was primarily due to personnel and preclinical costs, and a $4.0 million up-front payment to Sprint Bioscience (Sprint) pursuant to the terms of the agreement with Sprint to exclusively in-license worldwide rights to a research-stage program targeting VPS34, and an increase in clinical trial expenses related to start-up activities for the planned Phase 3 MOTION study of vimseltinib and Phase 1b/2 study of QINLOCK in combination with binimetinib. Non-cash, stock-based compensation was $5.4 million and $4.5 million for the third quarters of 2021 and 2020, respectively.

• SG&A Expenses: Selling, general, and administrative expenses for the third quarter of 2021 were $35.5 million, compared to $30.1 million for the same period in 2020. The increase was primarily due to personnel costs as well as external spend related to professional fees, including those associated with establishing a targeted commercial infrastructure and commercial preparedness in key European markets to support a launch of QINLOCK in Europe, if approved. Non-cash, stock-based compensation was $6.4 million and $5.3 million for the third quarters of 2021 and 2020, respectively.

• Net Loss: For the third quarter of 2021, Deciphera reported a net loss of $79.8 million, or $1.37 per share, compared with a net loss of $63.7 million, or $1.13 per share, for the same period in 2020. The increase in net loss was primarily a result of increased R&D expenses, as described above, partially offset by increased sales volume in the U.S.

• Cash Position: As of September 30, 2021, cash, cash equivalents, and marketable securities were $392.2 million, compared to $451.0 million as of June 30, 2021. Based on its current operating plans, Deciphera expects its current cash, cash equivalents, and marketable securities together with anticipated product, royalty, and supply revenues, excluding any potential future milestone payments under the Zai License Agreement, will enable the Company to fund its operating and capital expenditures into the first half of 2023.

Conference Call and Webcast

Deciphera will host a conference call and webcast to discuss this announcement today, November 2, 2021, at 4:30 PM ET. To access the live call by phone please dial (866) 930-5479 (domestic) or (409) 216-0603 (international); the conference ID is 8178994. A live audio webcast of the event may also be accessed through the “Investors” section of Deciphera’s website at www.deciphera.com. A replay of the webcast will be available for 30 days following the event.

About Deciphera Pharmaceuticals

Deciphera is a biopharmaceutical company focused on discovering, developing, and commercializing important new medicines to improve the lives of people with cancer. We are leveraging our proprietary switch-control kinase inhibitor platform and deep expertise in kinase biology to develop a broad portfolio of innovative medicines. In addition to advancing multiple product candidates from our platform in clinical studies, QINLOCK® is Deciphera’s switch control inhibitor for the treatment of fourth-line GIST. QINLOCK is approved in Australia, Canada, China, Hong Kong, Switzerland, Taiwan, and the United States. For more information, visit www.deciphera.com and follow us on LinkedIn and Twitter (@Deciphera).

Cautionary Note Regarding Forward-Looking Statements

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, as amended, including, without limitation, our expectations and timing regarding top-line data from our Phase 3 INTRIGUE study in second-line GIST, plans to initiate a phase 1b/2 study of QINLOCK with a MEK inhibitor in post-imatinib GIST patients, potential EMA approval of QINLOCK for the treatment of fourth-line GIST, plans to initiate pivotal studies for vimseltinib in TGCT patients and for the rebastinib/paclitaxel combination, subject to discussions with regulators, the potential benefits of fast track designation from the FDA, the potential of DCC-3116 to address a broad spectrum of cancers in which autophagy is upregulated and our timing for initial data from the dose escalation portion of the phase 1 study of DCC-3116, the company’s leading position in the development of regulators of autophagy for the potential treatment of cancer, and cash runway expectations. The words “may,” “will,” “could,” “would,” “should,” “expect,” “plan,” “anticipate,” “intend,” “believe,” “estimate,” “predict,” “project,” “potential,” “continue,” “seek,” “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 press release 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 press release, including, without limitation, risks and uncertainties related to the severity and duration of the impact of COVID-19 on our business and operations, our ability to successfully demonstrate the efficacy and safety of our drug candidates and in additional indications for our existing drug, the preclinical or clinical results for our product candidates, which may not support further development of such product candidates, our ability to manage our reliance on sole-source third parties such as our third party drug substance and drug product contract manufacturers, comments, feedback and actions of regulatory agencies, our ability to commercialize QINLOCK and execute on our marketing plans for any drugs or indications that may be approved in the future, our ability to build and scale our operations to support growth in additional geographies, the inherent uncertainty in estimates of patient populations, competition from other products, our ability to obtain and maintain reimbursement for any approved product and the extent to which patient assistance programs are utilized, our ability to comply with healthcare regulations and laws, our ability to obtain, maintain and enforce our intellectual property rights, any or all of which may affect the initiation, timing and progress of clinical studies and the timing of and our ability to obtain additional regulatory approvals, and other risks identified in our Securities and Exchange Commission (SEC) filings, including our Quarterly Report on Form 10-Q for the quarter ended September 30, 2021, and subsequent filings with the SEC. We caution you not to place undue reliance on any forward-looking statements, which speak only as of the date they are made. We disclaim any obligation to publicly update or revise any such statements to reflect any change in expectations or in events, conditions or circumstances on which any such statements may be based, or that may affect the likelihood that actual results will differ from those set forth in the forward-looking statements. Any forward-looking statements contained in this press release represent our views only as of the date hereof and should not be relied upon as representing our views as of any subsequent date. We explicitly disclaim any obligation to update any forward-looking statements.

Deciphera, the Deciphera logo, QINLOCK, and the QINLOCK logo are registered trademarks of Deciphera Pharmaceuticals, LLC.

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