Zentalis Pharmaceuticals Provides Update on Azenosertib Clinical Development Program

On June 18, 2024 Zentalis Pharmaceuticals, a clinical-stage biopharmaceutical company discovering and developing clinically differentiated small molecule therapeutics targeting fundamental biological pathways of cancers, reported that the U.S. Food and Drug Administration (FDA) has placed a partial clinical hold on the following studies of azenosertib: the Phase 1 ZN-c3-001 dose-escalation study in solid tumors, the Phase 2 ZN-c3-005 (DENALI) study in platinum-resistant ovarian cancer (PROC) and the Phase 2 ZN-c3-004 (TETON) study in uterine serous carcinoma (USC) (Press release, Zentalis Pharmaceuticals, JUN 18, 2024, View Source [SID1234646059]). This action follows two recent deaths due to presumed sepsis in the DENALI study.

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"Patient safety is our top priority and any deaths that occur in the setting of clinical trials are unfortunate. We are working closely with the FDA to resolve this partial clinical hold as quickly as possible," said Kimberly Blackwell, M.D., Chief Executive Officer of Zentalis. "Over 500 patients have been treated with azenosertib monotherapy to date, and we believe that our data indicate a favorable therapeutic index that could potentially offer meaningful benefits to women facing PROC and USC. We have completed enrollment for Cohort 1b of the DENALI study, where we’ve enrolled more than a hundred patients, further demonstrating the support we’ve seen for having a novel oral therapy like azenosertib. We look forward to sharing these results along with overall efficacy and safety data from DENALI Cohort 1b later this year."

In addition to sharing topline results of Cohort 1b of DENALI, the Company remains on track to present results from the ZN-c3-001 and Phase 1/2 ZN-c3-006 (MAMMOTH) studies later this year. The Company will provide additional updates to the azenosertib clinical development and other data timelines following resolution of the partial clinical hold. Zentalis remains committed to the azenosertib development program and bringing this potentially practice-changing therapy to patients with gynecological malignancies.

Conference Call Details
Zentalis will host a live conference call and webcast today at 8:00 a.m. Eastern Time to provide a business update. To access the live conference call by telephone, please register at: https://register.vevent.com/register/BI24249bb9e5714044b9f4057f28565923. Upon registering, each participant will be provided with call details and access codes. The live webcast may be accessed by visiting the event link at: View Source The webcast will also be made available on the Company’s website at www.zentalis.com under the Investors & Media section. Following the live audio webcast, a replay will be available on the Company’s website for approximately 30 days.