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A Study of Rucaparib in Patients With Metastatic Castration-resistant Prostate Cancer and Homologous Recombination Gene Deficiency (TRITON2)

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ClinicalTrials.gov Identifier: NCT02952534
Recruitment Status : Completed
First Posted : November 2, 2016
Last Update Posted : August 30, 2021
Sponsor:
Collaborator:
Foundation Medicine
Information provided by (Responsible Party):
Clovis Oncology, Inc.

Study Description
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Brief 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.

Condition or disease Intervention/treatment Phase
Metastatic Castration Resistant Prostate Cancer Drug: Rucaparib Phase 2

Study Design
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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 277 participants
Allocation: N/A
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: TRITON2: A Multicenter, Open-label Phase 2 Study of Rucaparib in Patients With Metastatic Castration-resistant Prostate Cancer Associated With Homologous Recombination Deficiency
Actual Study Start Date : February 15, 2017
Actual Primary Completion Date : July 18, 2021
Actual Study Completion Date : July 27, 2021

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Prostate Cancer
Drug Information available for: Rucaparib

Arms and Interventions
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Arm Intervention/treatment
Experimental: Rucaparib
Oral rucaparib (monotherapy)
 Drug: Rucaparib
Rucaparib will be administered daily
Other Name: CO-338


Outcome Measures
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Primary Outcome Measures :
  1. Objective Response Rate (ORR) [ Time Frame: From enrollment to primary completion of study (up to approximately 3 years) ]
  2. Prostate Specific Antigen (PSA) Response [ Time Frame: From enrollment to primary completion of study (up to approximately 3 years) ]

Secondary Outcome Measures :
  1. Duration of Response (DOR) [ Time Frame: From enrollment to completion of study (up to approximately 3 years and 6 months) ]
  2. Radiologic Progression-free Survival (rPFS) [ Time Frame: From enrollment to completion of study (up to approximately 3 years and 6 months) ]
  3. Overall Survival (OS) [ Time Frame: From enrollment to completion of study (up to approximately 3 years and 6 months) ]
  4. Clinical Benefit Rate (CBR), defined as the percentage of patients with a complete response (CR), partial response (PR) or stable disease (SD) according to modified RECIST 1.1 with no progression in bone per PCWG3 criteria [ Time Frame: From enrollment to primary completion of study (up to approximately 3 years) ]
  5. Time to PSA Progression [ Time Frame: From enrollment to primary completion of study (up to approximately 3 years) ]
  6. Trough plasma PK (Cmin) of rucaparib based on sparse sampling [ Time Frame: From enrollment to completion of study (up to approximately 3 years and 6 months) ]
  7. Safety and tolerability of rucaparib assessed by AEs reported; clinical laboratory investigations; Vital signs; 12-lead ECGs; Physical examinations; and ECOG performance status [ Time Frame: From enrollment to completion of study (up to approximately 3 years and 6 months) ]
    This is a composite outcome. It will be assessed by incidence, type, seriousness, and severity of AEs reported; clinical laboratory investigations (hematology, serum chemistry and urinalysis); Vital signs (blood pressure, heart rate, and body temperature); 12 lead ECGs; Physical examinations; and ECOG performance status


Eligibility Criteria
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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Be 18 years old at the time the informed consent form is signed
  • Have a histologically or cytologically confirmed adenocarcinoma or poorly differentiated carcinoma of the prostate
  • Be surgically or medically castrated, with serum testosterone levels of ≤ 50 ng/dL (1.73 nM)
  • Experienced disease progression after having received at least 1 but no more than 2 prior next-generation androgen receptor-targeted therapies, and 1 prior taxane-based chemotherapy, for castration-resistant disease
  • Have a deleterious mutation in BRCA1/2 or ATM, or molecular evidence of other homologous recombination deficiency

Exclusion Criteria:

  • 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, mitoxantrone, cyclophosphamide or any platinum-based chemotherapy
  • 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 rucaparib
Contacts and Locations
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Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02952534


Locations
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Sponsors and Collaborators
Clovis Oncology, Inc.
Foundation Medicine
More Information
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Responsible Party: Clovis Oncology, Inc.
ClinicalTrials.gov Identifier: NCT02952534    
Other Study ID Numbers: CO-338-052
First Posted: November 2, 2016    Key Record Dates
Last Update Posted: August 30, 2021
Last Verified: August 2021

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Studies a U.S. FDA-regulated Drug Product: Yes
Studies a U.S. FDA-regulated Device Product: No
Keywords provided by Clovis Oncology, Inc.:
CRPC
PARP inhibitor
PARPi
BRCA
ATM
HRD
TRITON
homologous recombination
DNA repair
DNA defect
DNA anomaly
BARD1
BRIP1
 CDK12
CHEK2
FANCA
NBN
PALB2
RAD51
RAD51B
RAD51C
RAD51D
RAD54L
germline
somatic
mCRPC
Additional relevant MeSH terms:
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Prostatic Neoplasms
Genital Neoplasms, Male
Urogenital Neoplasms
Neoplasms by Site
Neoplasms
Prostatic Diseases
 Rucaparib
Poly(ADP-ribose) Polymerase Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Antineoplastic Agents