Study identifier: NCT03480646 Synced from ClinicalTrials.gov · August 05, 2026
● Completed

ProSTAR: A Study Evaluating CPI-1205 in Patients With Metastatic Castration Resistant Prostate Cancer

Condition: Metastatic Castration Resistant Prostate Cancer (mCRPC)  ·  Sponsor: Constellation Pharmaceuticals

PhasePhase 1/Phase 2
Planned participants175
Who can joinMale, 18 Years to no upper limit
Healthy volunteersNo

About this study

This was an open-label Phase 1b/2 study involving oral administration of CPI-1205 in combination with either enzalutamide or abiraterone/prednisone in male patients with metastatic Castration-Resistant Prostate Cancer. The study was designed to determine the maximum tolerated dose (MTD) and the recommended Phase II dose (RP2D) based on the safety, tolerability, pharmacokinetic, and efficacy profiles of CPI-1205 in combination with either enzalutamide or abiraterone/prednisone. Following the determination of the MTD and RP2D, the study proceeded to Phase 2. Patients in Phase 2 received CPI-1205 at the RP2D in combination with either enzalutamide or abiraterone/prednisone versus either enzalutamide or abiraterone/prednisone as a control arm.

This description comes directly from the study's public registry record.

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No contact information is available for this study as per the public registry record.

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Locations (41)

Alaska Urological InstituteAnchorage, Alaska, United States
Beverly Hills Cancer Center (BHCC)Beverly Hills, California, United States
John Wayne Cancer Inst.Duarte, California, United States
UCLALos Angeles, California, United States
Rocky Mountain Cancer CentersAurora, Colorado, United States
University of Colorado Hospital - Anschutz Cancer PavilionAurora, Colorado, United States
University of FloridaJacksonville, Florida, United States
Mount Sinai Comprehensive Cancer CenterMiami, Florida, United States
H. Lee Moffitt Cancer Center & Research InstituteTampa, Florida, United States
Rush University Medical CenterChicago, Illinois, United States
University of Illinois Hospital and Health SystemsChicago, Illinois, United States
Indiana University- Simon Cancer CenterIndianapolis, Indiana, United States

+ 29 more locations — full list on the registry record.

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