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C2321003: A PHASE 3, RANDOMIZED, DOUBLE BLIND, PLACEBO CONTROLLED STUDY OF PF-06821497 (MEVROMETOSTAT) WITH ENZALUTAMIDE IN METASTATIC CASTRATION RESISTANT PROSTATE CANCER (MEVPRO-2)

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2024-511652-40-00
Acronym
C2321003
Enrollment
328
Registered
2025-01-08
Start date
2025-02-05
Completion date
Unknown
Last updated
2025-12-18

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

METASTATIC CASTRATION RESISTANT PROSTATE CANCER

Brief summary

BICR assessed rPFS per RECIST 1.1 (soft tissue disease) and PCWG3 (bone disease).

Detailed description

OS (alpha protected), TTPP (alpha protected): assessed using time to first ≥2- point increase from baseline score on BPISF Item 3 (Worst Pain) observed at 2 consecutive visits or the initiation of short- or long-acting opioid use for pain, Proportion of participants with measurable soft tissue disease at baseline with an objective response per RECIST 1.1 (assessed by BICR), Duration of soft tissue response per RECIST 1.1 (assessed by BICR), Proportion of participants with PSA response ≥50% in participants with detectable PSA values at baseline, Time to PSA progression, Time to initiation of new antineoplastic therapy, Time to initiation of cytotoxic chemotherapy, Time to first symptomatic skeletal event, PFS2 based on investigator assessment separately, Type, incidence, severity (as graded by the National Cancer Institute Common Terminology Criteria for Adverse Events [NCI CTCAE] v5.0), seriousness and relationship to study medications of AEs and any laboratory test and ECG abnormalities, ctDNA burden at baseline and on study, PK characterized by pre-dose trough and post-dose plasma concentrations of PF- 06821497 at selected visits, Change from baseline in participant reported pain symptoms per BPI-SF; Change from baseline in BPI-SF Item 3 (Worst Pain) at Cycle 7 Day 1 (Week 25); Change from baseline in HRQoL, functioning and symptoms per FACT-P; Change from baseline in participant reported health status per EQ- 5D-5L; Symptomatic toxicity and the overall side effect burden as measured by items from the PRO-CTCAE and FACT-GP5; Time to definitive deterioration in participant reported HRQoL and physical well-being per FACT-P

Interventions

Sponsors

Pfizer Inc.
Lead SponsorINDUSTRY

Eligibility

Sex/Gender
Male
Age
18 Years to No maximum

Design outcomes

Primary

MeasureTime frame
BICR assessed rPFS per RECIST 1.1 (soft tissue disease) and PCWG3 (bone disease).

Secondary

MeasureTime frame
OS (alpha protected), TTPP (alpha protected): assessed using time to first ≥2- point increase from baseline score on BPISF Item 3 (Worst Pain) observed at 2 consecutive visits or the initiation of short- or long-acting opioid use for pain, Proportion of participants with measurable soft tissue disease at baseline with an objective response per RECIST 1.1 (assessed by BICR), Duration of soft tissue response per RECIST 1.1 (assessed by BICR), Proportion of participants with PSA response ≥50% in participants with detectable PSA values at baseline, Time to PSA progression, Time to initiation of new antineoplastic therapy, Time to initiation of cytotoxic chemotherapy, Time to first symptomatic skeletal event, PFS2 based on investigator assessment separately, Type, incidence, severity (as graded by the National Cancer Institute Common Terminology Criteria for Adverse Events [NCI CTCAE] v5.0), seriousness and relationship to study medications of AEs and any laboratory test and ECG abnormaliti

Countries

Bulgaria, Czechia, Denmark, Finland, France, Germany, Greece, Hungary, Italy, Netherlands, Poland, Slovakia, Spain, Sweden

Outcome results

None listed

Source: EU CTIS · Data processed: Feb 4, 2026