MSD Expands Opevesostat Clinical Program to Include Breast, Endometrial, and Ovarian Cancers
- MSD has initiated a new Phase 2 clinical trial to evaluate opevesostat (MK-5684) in women's cancers, expanding beyond its current prostate cancer program.
- Opevesostat, an oral, non-steroidal and selective CYP11A1 inhibitor discovered by Orion, will be tested for safety and efficacy in breast, endometrial, and ovarian cancers.
- The expansion represents a significant broadening of potential therapeutic applications for opevesostat, which is already in Phase 3 trials for metastatic castration-resistant prostate cancer.
Merck Sharp & Dohme LLC
Posted 8/11/2025