Phase III randomized studies of mevrometostat and enzalutamide in metastatic prostate cancer (MEVPRO-1 and MEVPRO-2): trial protocols
Abstract
Phase I investigation of the enhancer of zeste homolog 2 inhibitor, mevrometostat, plus enzalutamide showed promising antitumor activity versus enzalutamide alone in patients with metastatic castration-resistant prostate cancer (mCRPC) (NCT03460977). MEVPRO-1 (open label) and MEVPRO-2 (double blind) are ongoing, global, phase III, randomized studies evaluating efficacy and safety of mevrometostat plus enzalutamide in patients with mCRPC. MEVPRO-1 will include ~600 patients with ≥12 weeks of prior abiraterone treatment, Eastern Cooperative Oncology Group (ECOG) performance status (PS) 0-2, testosterone ≤50 ng/dL, and life expectancy ≥6 months. MEVPRO-2 will include ~900 androgen receptor pathway inhibitor-naïve patients, with ECOG PS 0-1, testosterone ≤50 ng/dL, and life expectancy ≥12 months. Patients are randomized 1:1 to mevrometostat (875 mg twice daily with food) plus enzalutamide (160 mg once daily), or physician's choice of enzalutamide or docetaxel (MEVPRO-1) or enzalutamide (MEVPRO-2). Primary endpoint is radiographic progression-free survival (rPFS) per Response Evaluation Criteria in Solid Tumors 1.1 (soft tissue) and Prostate Cancer Working Group 3 criteria (bone) assessed by blinded independent central review. Overall survival is a secondary objective. Kaplan-Meier analysis will summarize time-to-event endpoints. Safety will be assessed. Results will evaluate whether mevrometostat plus enzalutamide can provide clinical benefit in patients with mCRPC.Clinical…
How strong is the evidence?
Evidence Hub reads this as a randomized trial, done in people. Its evidence level is 2 of 5 (High · randomized trial). Randomized trials of a reasonable size are the strongest single-study design. Reported size: 600 participants or records.
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