The purpose of this study is to evaluate the safety, tolerability, and efficacy of two different treatment combinations of tulmimetostat in participants with de novo or recurrent metastatic hormone-sensitive prostate cancer (mHSPC). Phase I aims to determine the recommended dose(s) for expansion (RDE) of tulmimetostat in combination with darolutamide or abiraterone. Phase II is designed to further evaluate the efficacy and safety of tulmimetostat in combination with darolutamide compared with darolutamide alone in participants with mHSPC.
Phase 1 trials primarily test safety and dosing in a small number of participants (typically 20–100). Results do not yet speak to efficacy. FDA approval is typically many years away from this stage.
Phase 2 trials begin testing efficacy in a larger patient group (100–300). This is often where biotech binary events occur — positive Phase 2 data can significantly advance a company's pipeline narrative, while failures can be terminal for a program.
Currently recruiting: the trial is enrolling patients. A data readout is not expected until after enrollment closes and the follow-up period is complete.
Novartis AG (NVS) is the sponsoring company for this trial. BiotechSign currently grades this company C (51/100) based on composite catalyst signals across its full pipeline. This trial is one data point in that overall catalyst picture.