A Study to Learn How PF-06821497 (Mevrometostat) Works in Men With Metastatic Castration-resistant Prostate Cancer.

Official record

Identifier

NCT06629779

Recruiting locations

countries

United StatesArgentinaBrazilBulgariaCanadaChileChinaCzechiaDenmarkFinlandFranceGermanyGreeceHungaryItalyJapanNetherlandsNew ZealandPolandSlovakiaSouth AfricaSouth KoreaSpainSwedenTaiwanTurkey (Türkiye)United Kingdom

Interventions studied

PF-06821497PlaceboEnzalutamide

Lead sponsor

Pfizer

Target enrolment

900 participants

Study type

INTERVENTIONAL

Phase

Phase 3

Status

Recruiting

First posted

Oct 8, 2024

Last updated on the registry

Jul 29, 2026

Age

18 Years

Sex

MALE

Study contact

The official record lists a study contact. Contact details are published there and are intentionally not copied to this page.

Eligibility criteria

Reproduced verbatim from the official record. Eligibility is decided by the study team, never by this page.

Inclusion Criteria:

* Histologically or cytologically confirmed adenocarcinoma of the prostate without small cell features.
* Metastatic disease in bone documented on bone scan, or in soft tissue documented on CT/MRI scan.
* Progressive disease in the setting of medical or surgical castration.
* ECOG performance status 0 or 1, with a life expectancy of ≥12 months as assessed by the investigator.

Exclusion Criteria:

* Any medical or psychiatric condition including recent (within the past year) or active suicidal ideation in the past year or suicidal behavior in the past 5 years or laboratory abnormality that make the participant inappropriate for the study.
* Known history of active inflammatory gastrointestinal disease, chronic diarrhea, or previous gastric resection or lap-band surgery.
* Clinically significant cardiovascular disease.
* Known or suspected brain metastasis or active leptomeningeal disease or clinically significant history of seizure.
* Any history of myelodysplastic syndrome, acute myeloid leukemia, or any other prior malignancy with a few exceptions.
* Participants must be treatment naïve at the mCRPC stage, eg, no cytotoxic chemotherapy, radio-ligand therapy (i.e. 177Lu- PSMA-617), CDK4/6 inhibitors, 5-alpha reductase inhibitors for prostate cancer in any setting, androgen receptor signaling inhibitors (ARSi) including enzalutamide, apalutamide, darolutamide, poly ADP-ribose polymerase (PARP) monotherapy or other systemic anti-cancer treatment with the following exceptions:

  1. Treatment with first-generation antiandrogen (ADT) agents, estrogens, progestins, cyproterone acetate;
  2. Docetaxel treatment is allowed for mCSPC, as long as no signs of failure, or disease progression occurred during treatment or within 3 months of treatment completion.
* Previous administration with an investigational product (drug or vaccine) within 30 days or 5 half-lives preceding the first dose of study intervention (whichever is longer).
* Inadequate organ function.