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No longer recruiting (closed or complete)Last updated: 25 February 2025

TRITON3: This phase III trial is comparing an oral drug (Rucaparib) with standard treatment in patients who have metastatic castration-resistant prostate cancerA Multicenter, Randomized, Open Label Phase 3 Study of Rucaparib Versus Physician's Choice of Therapy for Patients With Metastatic Castration Resistant Prostate Cancer Associated With Homologous Recombination Deficiency

Trial purpose

Medical clipboardCancer treatment

Tumor type

Urinary System Cancers Genitourinary

Age

People18+

Trial acronym

TRITON3

Clinical summary

Summary

The purpose of this study is to determine how patients with metastatic castration-resistant prostate cancer, and evidence of a homologous recombination gene deficiency, respond to treatment with rucaparib verses treatment with physician's choice of abiraterone acetate, enzalutamide, or docetaxel.

Conditions

This trial is treating people with Prostate Cancer

Eligibility

Inclusion

  • Be 18 years old at the time the informed consent is signed
  • Have a histologically or cytologically confirmed adenocarcinoma or poorly differentiated carcinoma of the prostate that is metastatic
  • Be surgically or medically castrated, with serum testosterone levels of ≤ 50 ng/dL (1.73 nM)
  • Be eligible for treatment with physician's choice of comparator treatment (abiraterone acetate, enzalutamide or docetaxel)
  • Experienced disease progression after having received 1 prior next generation androgen receptor-targeted therapy
  • Have a deleterious mutation in a BRCA1/2 or ATM gene

Exclusion

  • Active second malignancy, with the exception of curatively treated non melanoma skin cancer, carcinoma in situ, or superficial bladder cancer
  • Prior treatment with any PARP inhibitor
  • Prior treatment with chemotherapy for metastatic castration-resistant prostate cancer
  • Symptomatic and/or untreated central nervous system metastases
  • Pre-existing duodenal stent and/or any gastrointestinal disorder or defect that would, in the opinion of the investigator, interfere with absorption of study drug

Inclusion

  • You have had treatment but your cancer has gotten worse or has not responded to the treatment you have been given.

Exclusion

  • You have been diagnosed with a prior or secondary type of cancer.
  • You have certain types of non-cancer medical conditions.
  • You have had certain treatments, surgical procedures or drugs.
Message

Clinical trials have complex eligibility criteria, and other criteria may apply for this trial. Ask your doctor about whether this trial could be right for you.

Participating hospitals

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More information

Trial Identifiers

Information on this page is partially produced from ClinicalTrials.gov *. View further details about this trial on the registry via the links below:

Trial sponsor

Clovis Oncology, Inc.

Scientific Title

A Multicenter, Randomized, Open Label Phase 3 Study of Rucaparib Versus Physician's Choice of Therapy for Patients With Metastatic Castration Resistant Prostate Cancer Associated With Homologous Recombination Deficiency

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