On January 7, 2019 Syndax Pharmaceuticals, Inc. ("Syndax," the "Company" or "we") (Nasdaq: SNDX), a clinical stage biopharmaceutical company developing an innovative pipeline of cancer therapies, reported a 2019 clinical and corporate outlook (Press release, Syndax, JAN 7, 2019, View Source [SID1234532534]).
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"2019 is slated to be a milestone-rich time for Syndax, with data expected from multiple trials within our ENCORE program of entinostat in combination with checkpoint therapy in platinum resistant ovarian cancer, triple negative breast cancer, and anti-PD-1-pretreated melanoma, all of which we believe represent underserved areas with significant market opportunity," said Briggs W. Morrison, M.D., Chief Executive Officer of Syndax. "We also eagerly anticipate the next interim overall survival analysis in the second quarter from the Phase 3 E2112 trial of entinostat plus exemestane in HR+, HER2- breast cancer and remain highly encouraged by the potential to provide a survival benefit for HR+, HER2- breast cancer patients who have stopped responding to first line treatment with hormone therapy. Any positive overall survival assessment would enable the company to file for full regulatory approval."
Dr. Morrison added, "In addition, we remain on track for an IND filing for our Menin inhibitor, SNDX-5613, in the second quarter of 2019, followed by initiation of the clinical trial program. Acute leukemias characterized by MLL-rearrangements and nucleophosmin mutations represent areas of high unmet medical need, and the preclinical data we’ve generated thus far provide strong support that menin inhibition has the potential to serve as an effective therapy for patients lacking viable options. Finally, we continue to expect initial efficacy results for SNDX-6352 in chronic graft versus host disease in the second half of 2019."
Anticipated Key Milestones for 2019:
Entinostat
Topline results from the randomized Phase 2 portion of the ENCORE 603 trial of entinostat in combination with Pfizer/Merck KGaA’s PD-L1 inhibitor, BAVENCIO (avelumab), in patients with ovarian cancer are expected in the first quarter of 2019.
Presentation of clinical, biomarker and gene analysis data from the anti-PD-1 pretreated melanoma cohort of the Phase 2 ENCORE 601 trial of entinostat in combination with KEYTRUDA (pembrolizumab) is expected in the first quarter of 2019.
A decision on whether to advance to the second stage of the ENCORE 601 cohort of patients with microsatellite stable colorectal cancer (MSS-CRC) naïve to PD-1 therapy is expected in the first quarter of 2019.
Topline results from the randomized Phase 2 portion of the ENCORE 602 trial of entinostat in combination with Genentech’s PD-L1 inhibitor, TECENTRIQ (atezolizumab), in patients with triple negative breast cancer are expected in the second quarter of 2019.
The next interim analysis for the overall survival (OS) primary endpoint of E2112, the Phase 3 registration trial of entinostat plus exemestane in advanced hormone receptor positive, human epidermal growth factor receptor 2 negative (HR+, HER2-) breast cancer, is expected in the second quarter of 2019. Additional interim analyses will be conducted every six months until either an OS benefit is observed, or the final target number of events occur. Any positive OS assessment would enable the Company to file for full regulatory approval.
Syndax plans to commence a focused, biomarker-driven, randomized registration trial comparing the entinostat-pembrolizumab combination to standard of care chemotherapy in non-small cell lung cancer (NSCLC) patients whose disease has progressed after both platinum-based chemotherapy and PD-1 antagonist therapy in the first half of 2019. The trial will seek to validate peripheral classical monocytes as a marker of response to the combination and to determine whether the combination can improve progression free survival (PFS) over standard of care chemotherapy in the high monocyte population.
SNDX-6352
Topline results and a recommended Phase 2 dose and schedule from the Phase 1/1b trial of SNDX-6352, Syndax’s anti-CSF-1R monoclonal antibody, alone or in combination with IMFINZI (durvalumab), AstraZeneca’s human monoclonal antibody directed against PD-L1, are expected in the second quarter of 2019.
Topline results and a recommended Phase 2 dose and schedule from the Phase 1 trial of SNDX-6352 in patients with chronic graft versus host disease (cGVHD) are expected in the third quarter of 2019.
Menin-MLLr Inhibitor Portfolio
An Investigational New Drug (IND) filing with the FDA for SNDX-5613, the Company’s lead Menin inhibitor compound, is expected in the second quarter of 2019, followed by the initiation of a Phase 1 clinical trial in patients with a genetically defined subset of acute leukemias.
Financial Guidance
Syndax ended 2018 with cash, cash equivalents and short-term investments of approximately $80 million. For 2019, research and development expenses are expected to be $54 to $58 million, and total operating expenses are expected to be $68 to $73 million. Research and development expenses and total operating expenses for 2019 are expected to include approximately $2 million and $6 million, respectively, of non-cash stock compensation. The Company plans to announce financial results from the fourth quarter and full-year 2018 later this quarter.