Odonate Therapeutics Initiates CONTESSA TRIO

Odonate Therapeutics, Inc. (NASDAQ: ODT), a pharmaceutical company dedicated to the development of best-in-class therapeutics that improve and extend the lives of patients with cancer, today announced the initiation of CONTESSA TRIO, a multi-cohort, multicenter, Phase 2 study of tesetaxel, Odonate’s investigational, orally administered taxane.

• In Cohort 1, approximately 90 patients (with potential expansion to up to 150 patients) with locally advanced or metastatic TNBC who have not received prior chemotherapy for advanced disease will be randomized 1:1:1 to receive tesetaxel plus either: (1) nivolumab; (2) pembrolizumab; or (3) atezolizumab. Nivolumab and pembrolizumab (PD-1 inhibitors) and atezolizumab (a PD-L1 inhibitor) are IO agents approved for the treatment of multiple types of cancer. One of these agents, atezolizumab, in combination with the intravenously delivered taxane, nab-paclitaxel, was recently approved by the U.S. Food and Drug Administration (FDA) as a first-line treatment for patients with metastatic TNBC. The dual primary endpoints for Cohort 1 are objective response rate (ORR) and progression-free survival (PFS). Secondary endpoints include duration of response (DoR) and overall survival (OS). Efficacy results for each of the three PD-(L)1 inhibitor combinations will be assessed for correlation with the results of each of the three approved PD-L1 diagnostic assays.
• In Cohort 2, approximately 40 elderly patients (with potential expansion to up to 60 patients) with HER2 negative MBC who have not received prior chemotherapy for advanced disease will receive tesetaxel monotherapy. The primary endpoint for Cohort 2 is ORR. Secondary endpoints include PFS, DoR and OS.

“Taxane-IO combinations hold great promise for patients living with TNBC,” said Sara Tolaney, M.D., M.P.H., Associate Director, Susan F. Smith Center for Women's Cancers, Director, Clinical Trials, Breast Oncology at Dana-Farber Cancer Institute and Principal Investigator of CONTESSA TRIO. “This study will investigate the safety and antitumor activity of tesetaxel, an orally administered taxane with a distinct tolerability and pharmacokinetic profile, in combination with three approved PD-(L)1 inhibitors. CONTESSA TRIO also will investigate tesetaxel monotherapy in elderly patients with MBC, a patient population in need of easier-to-take and better tolerated therapies.”