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Mevrometostat

Phase 3

Metastatic Castration Sensitive Prostate Cancer (mCSPC) | Small molecule | Oncology |Pfizer, Inc.|Last Updated: Jun 5, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedDouble-BlindACTIVE_CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment1,000
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT07028853This Study Will Explore Whether a Combination of the Investigational Drug Mevrometostat (PF-06821497) and Enzalutamide Will Work Better Than Taking Enzalutamide Alone in Participants With mCSPC Who Are ARPI naïve.PHASE3 RECRUITING 1,000Sep 28, 2025Dec 8, 2034Jun 5, 2026331 United States, Argentina +24
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Study Endpoints
Primary Endpoints
Radiographic Progression Free Survival (rPFS)
Randomization up to approximately 4 years

rPFS is defined as the time from randomization until PD based on BICR assessment per RECIST v1.1 (soft tissue disease) and PCWG3 (bone disease), or death due to any cause, whichever occurs first.

Secondary Endpoints
Overall survival (OS)
Randomization up to approximately 9 years
Objective response in measurable soft tissue disease
Randomization up to approximately 4 years
Duration of Response (DoR) in measurable soft tissue disease
Randomization up to approximately 4 years
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Arm AEXPERIMENTALParticipants will receive mevrometostat/PF-06821497 (875 mg) BID (twice daily) + enzalutamide 160 mg QD (once daily)
Arm BACTIVE_COMPARATORParticipants will receive Placebo BID (twice daily) + enzalutamide 160 mg QD (once daily)
Interventions
NameTypeDescription
MevrometostatDRUGOral continuous
PlaceboDRUGOral continuous
EnzalutamideDRUGOral continuous
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Eligibility Criteria
Age Range18 Years — N/A
SexMALE
Healthy VolunteersNo
Study Sites331

Inclusion Criteria * Male participants aged ≥18 years (or the minimum age of consent in accordance with local regulations) at screening. * Histologically or cytologically confirmed adenocarcinoma of the prostate without small cell features. * Metastatic prostate cancer documented by positive bone s...

Countries:United StatesArgentinaAustraliaBelgiumBrazilBulgariaCanadaChinaCzechiaFinlandFranceGermanyGreeceIsraelItalyJapanNetherlandsNew ZealandPolandSlovakiaSouth KoreaSpainSwitzerlandTaiwanTurkey (Türkiye)United Kingdom
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Recent Changes (Last 90 Days)
LOWJun 5, 2026NCT07028853lastUpdatePostDate: changed
LOWJun 5, 2026NCT07028853lastUpdatePostDate: changed
LOWJun 5, 2026NCT07028853lastUpdatePostDate: changed
LOWJun 5, 2026NCT07028853lastUpdatePostDate: changed
LOWMay 29, 2026NCT07028853lastUpdatePostDate: changed
LOWMay 29, 2026NCT07028853lastUpdatePostDate: changed
LOWMay 29, 2026NCT07028853lastUpdatePostDate: changed
LOWMay 26, 2026NCT07028853primaryCompletionDate: changed
LOWMay 24, 2026NCT07028853studyFirstPostDate: changed