Metastatic Castration Resistant Prostate CancerPhase 2TRITON2NCT02952534
A Study of Rucaparib in Patients With Metastatic Castration-resistant Prostate Cancer and Homologous Recombination Gene Deficiency
A Phase 2 study testing Rucaparib in people with Metastatic Castration Resistant Prostate Cancer, run by pharmaand GmbH at 149 sites in 12 countries.
Trial 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. Read more about this study
- Who is it for?
- Ages 18 years and older, men only
- Conditions the study is for
- Metastatic Castration Resistant Prostate Cancer
- What is being tested?
- Rucaparib
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 277 participants
- Where
- 149 sitesin 12 countries
- Study dates
- 15 Feb 2017to 27 Jul 2021
- Phase
- Phase 2
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- Men only
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- 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
Who cannot join
- 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
Trial locations and contacts
149 sites in 12 countries.
149 sites in 12 countries
United States58 sites
VA Ann Arbor Healthcare System
Ann Arbor, Michigan, 48105
Atlanta Urological Group
Atlanta, Georgia, 30312
Rocky Mountain Cancer Centers
Aurora, Colorado, 80012
University of Maryland Greenebaum Cancer Center
Baltimore, Maryland, 21201
Walter Reed Hospital
Bethesda, Maryland, 48202
University of Alabama at Birmingham
Birmingham, Alabama, 35294
Boca Raton Community Hospital, Inc.
Boca Raton, Florida, 33486
Massachusetts General Hospital
Boston, Massachusetts, 02114
Roswell Park
Buffalo, New York, 14263
University of Chicago Comprehensive Cancer Center
Chicago, Illinois, 60637
The Urology Group
Cincinnati, Ohio, 45212
Carolina Urology Partners
Concord, North Carolina, 28025
Texas Oncology Medical City Dallas
Dallas, Texas, 75320
UT Southwestern Medical Center
Dallas, Texas, 75390
Henry Ford Hospital
Detroit, Michigan, 48202
Fairview Hospital
Edina, Minnesota, 55435
Florida Cancer Specialists
Fort Myers, Florida, 33980
Consultants in Medical Oncology Hematology
Horsham, Pennsylvania, 19044
UT Health Science Center
Houston, Texas, 77030
HCA Midwest Division - Kansas City
Kansas City, Missouri, 64132
Kettering Cancer Center
Kettering, Ohio, 45429
Alliance Research Centers
Laguna Hills, California, 92653
Comprehensive Cancer Centers of Nevada
Las Vegas, Nevada, 89119
Premier Urology Associates dba/AdvanceMed Research
Lawrenceville, New Jersey, 08648
VA Greater Los Angeles Healthcare System
Los Angeles, California, 90073
University of Southern California
Los Angeles, California, 90211
Clinical Research Solutions
Middleburg Heights, Ohio, 44130
Minnesota Oncology Hematology, P.A.
Minneapolis, Minnesota, 55404
Minnesota Veterans Research Institute
Minneapolis, Minnesota, 55417
SCRI - Tennessee Oncology
Nashville, Tennessee, 37203
Rutgers Cancer Institute of New Jersey
New Brunswick, New Jersey, 08901
Yale School of Medicine
New Haven, Connecticut, 06510
Ochsner Medical Center
New Orleans, Louisiana, 70121
NYU Perlmutter Cancer Center
New York, New York, 10016
Memorial Sloan Kettering CC
New York, New York, 10065
Weill Cornell Medical College/NewYork-Presbyterian Hospital
New York, New York, 10065
4701 Ogletown Stanton Rd.
Newark, Delaware, 19713
Virginia Oncology Associates
Norfolk, Virginia, 23502
Alegent Health Bergan Mercy Hospital , GU Research Network
Omaha, Nebraska, 68130
Nebraska Cancer Specialists
Omaha, Nebraska, 68130
University of Florida Health Cancer Center
Orlando, Florida, 32806
Stanford University
Palo Alto, California, 94305
Mayo Clinc
Phoenix, Arizona, 85259
VA Portland Health Care System
Portland, Oregon, 97219
Premier Medical Group of the Hudson Valley PC
Poughkeepsie, New York, 12301
University of Rochester
Rochester, New York, 14642
Sharp Memorial Hospital
San Diego, California, 92123
Pacific Hematology Oncology Associates
San Francisco, California, 94115
San Francisco VA Health Care System
San Francisco, California, 94143
UCSF Helen Diller Family Comprehensive Cancer Center
San Francisco, California, 94158
Redwood Regional Medical Group
Santa Rosa, California, 95406
VA Puget Sound
Seattle, Washington, 98108
SUNY Upstate Medical University
Syracuse, New York, 13210
Moffitt Cancer Center
Tampa, Florida, 33612
Arizona Oncology Associates
Tucson, Arizona, 85704
Texas Oncology - Tyler
Tyler, Texas, 75702
Kaiser Permanente Medical Center (Vallejo)
Vallejo, California, 94589
Georgetown University Medical Center
Washington D.C., District of Columbia, 20007
Spain17 sites
Hospital Universitari Germans Trias i Pujol
Badalona, 08916
Hospital del Mar, Servicio de Oncología
Barcelona, 08003
Hospital Clínic i Provincial de Barcelona-Oncology
Barcelona, 08036
Instituto Catalan de Oncologia
Barcelona, 08908
Hospital Universitari Germans Trias i Pujol
Barcelona, 08916
Hospital General Universitario de Guadalajara
Guadalajara, 19002
Hospital Universitario Lucus Augusti.
Lugo, 27003
MD Anderson Cancer Center - Madrid
Madrid, 28033
Hospital Universitario Ramón y Cajal
Madrid, 28034
Hospital 12 de Octubre
Madrid, 28041
Hospital Universitario La Paz
Madrid, 28046
Hospital Puerta de Hierro-Majadahonda
Madrid, 28222
Hospital Universitario Central de Asturias
Oviedo, 33011
Corporacio Sanitaria Parc Tauli
Sabadell, 8208
Marques de Valdecilla University Hospital (HUMV)
Santander, 39008
Hospital Universitario Virgen del Rocío
Seville, 41013
Instituto Valenciano de Oncologia IVO
Valencia, 46009
Germany14 sites
Gemeinschaftspraxis fur Hamatologie & Onkologie
Augsburg, 86150
Charite Universitatsmedizin Berlin
Berlin, 12200
Universitätsklinik Köln
Cologne, 50937
Universitatsklinikum Carl Gustav Carus
Dresden, 01307
Universitatsklinikum Dusseldorf
Düsseldorf, 40225
Urologische Gemeinschaftspraxis
Emmendingen, 79312
Universitaetsklinikum Hamburg-Eppendorf (UKE)
Hamburg, 20246
Universitaetsklinikum Heidelberg
Heidelberg, 69120
Universitatsklinikum Jena
Jena, 07747
Universitätsklinikum Schleswig-Holstein
Lübeck, 23538
Medizinischen Fakultät Mannheim der Universität Heidelberg
Mannheim, 68167
Studienpraxis Urologie
Nürtingen, 72622
University of Tuebingen
Tübingen, 72076
Die Gesundhehitsunion DGU
Wuppertal, 42103
United Kingdom11 sites
Oxford University Hospitals
Headington, OC3 7LJ
Royal Liverpool Hospital
Liverpool, L7 8XP
London Health Science Center - Victoria Hospital
London, N6A 4L6
Guy's Hospital
London, SE1 9RT
Sarah Cannon Research Institutute - UK
London, W1G 6AD
The Clatterbridge Cancer Centre NHS Foundation Trust
Metropolitan Borough of Wirral, CH63 4JY
Mount Vernon Cancer Centre
Northwood, England, HA6 2RN
Wexham Park Hospital
Slough, Berkshire, SL2 4HL
Southampton General Hospital
Southampton, SO16 6YD
Royal Marsden Hospital
Sutton, Surrey, SM2 5PT
Musgrove Park Hospital
Taunton, TA1 5DA
Australia9 sites
Peninsula & Southeast Oncology
Frankston, Victoria, 3199
Barwon Health, University Hospital Geelong
Geelong, Victoria, 3220
Royal Hobart Hospital
Hobart, Tasmania, 7000
Cabrini Hospital
Malvern, Victoria, 3144
Southside Cancer Care Centre
Miranda, 2228
Orange Health Services
Orange, 2800
Northern Cancer Insitute, St. Leonards
Saint Leonards, New South Wales, 2065
St John of God Hospital, Subiaco
Subiaco, 6008
Riverina Cancer Care Centre
Wagga Wagga, 2650
France8 sites
Centre François Baclesse
Caen, 14000
Centre Georges François Leclerc
Dijon, 21079
Clinique Victor Hugo Centre Jean Bernard
Le Mans, 72000
Hôpital Privé La Louvière
Lille, 59800
Polyclinique de Gentilly (Centre D'Oncologie De Gentilly)
Nancy, 54100
Institut Curie
Paris, 75248
Hôpital Privé des Côtes d'Armor
Plérin, 22190
CRLCC Eugene Marquis
Rennes, 35042
Italy8 sites
Ospedale San Donato, Azienda USLSUDEST
Arezzo, 52100
Ospedale Santa Maria delle Croci
Faenza, 48018
IRCCS Istituto Nazionale dei Tumori (INT)
Milan, 20133
IEO Instituto Europeo di Oncologia
Milan, 20141
University of Modena and Reggio Emilia Medical Oncology
Modena, 41124
Azienda Ospedaliera San Camillo-Forlanini
Rome, 00152
Azienda Opsedaliera S. Maria di Terni
Terni, 05100
Santa Chiara Hospital, Dept Medical Oncology
Trento, 38122
Belgium6 sites
ZNA Middelheim
Antwerp, 2020
Universitair Ziekenhuis Gent
Ghent, B-9000
AZ Groeninge
Kortrijk, 8500
CHU Sart-Tilman
Liège, 4000
Equipe de Recherche Clinique, Département d'Oncologie/Hématologie
Liège, 4000
AZ DELTA
Roeselare, B-8800
Israel6 sites
Rambam Health Care Campus (RHCC), Rambam Medical Center
Haifa, 3109601
Hadassah University Hospital
Jerusalem, 71120
Meir Medical Center
Kfar Saba, 4428164
Rabin Medical Center-Beilinson Campus
Petah Tikva, 4941492
Chaim Sheba Medical Center
Ramat Gan, 52621
The Tel Aviv Sourasky Medical Center (Ichilov Hospital)
Tel Aviv, 64231
Ireland5 sites
Cork University Hospital
Cork, T12 DFK4
St. Vincent's University Hospital
Dublin, D04T6F4
St James's Hospital
Dublin, D08 NHY1
Adelaide & Meath Hospital, Incorporating the National Children's Hospital
Dublin, Dublin 24
Mater Misericordiae University Hospital
Dublin, Dublin 7
Canada4 sites
Juravinski Cancer Centre Hamilton Health Services
Hamilton, Ontario, L8V5C2
London Health Science Center - Victoria Hospital
London, Ontario, N6A 4L6
The Ottawa Hospital
Ottawa, Ontario, K1H8L6
Princess Margaret Hospital
Toronto, M5G 2M9
Denmark3 sites
Copenhagen University Hospital
Copenhagen, 2100
Herlev Hospital
Herlev, 2730
Vejle Sygehus
Vejle, 7100
About this study
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
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.
- Being tested
- Rucaparib
- Keywords
- 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
- Medical subject headings
- Mental Retardation, X-Linked, With Or Without Seizures, Arx-Related
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
RucaparibDrug
Also called CO-338
Rucaparib will be administered daily
| Study group | Role | What they receive |
|---|---|---|
| Rucaparib | Experimental | Oral rucaparib (monotherapy) Receives: Drug: Rucaparib |
What is being measured
The primary outcome is the main question the study is designed to answer.
Confirmed Objective Response Rate (ORR) by Gene in Patients With Measurable Disease at Baseline Per Central Independent Radiology Review (IRR)
The primary efficacy endpoint is confirmed radiographic ORR by central IRR. ORR is defined as the percentage of patients with a confirmed CR (complete response) or PR (partial response) by mRECIST (modified Response Evaluation Criteria in Solid Tumors) v1.1/PCWG3 (Prostate Cancer Working Group 3) criteria. The confirmed response is defined as a CR or PR on subsequent tumor assessment at least 28 days after first response documentation in the absence of confirmed progression in bone. CR is disappearance of all target and non-target lesions; any pathological lymph nodes (whether target or non-target) must have reduction in short axis to <10 mm. PR is at least a 30% decrease in the sum of the diameters of target lesions, taking as reference the baseline sum diameters.
Measured: Assessments every 8 weeks from study day 1 for the first 24 weeks, and then every 12 weeks until disease progression, death, or initiation of subsequent treatment. Total follow-up was up to approximately 3 years.
Secondary outcomes (12)
Confirmed Objective Response Rate (ORR) by Gene in Patients With Measurable Disease at Baseline Per Investigator (INV)
A supportive efficacy endpoint is confirmed radiographic ORR by INV. ORR is defined as the percentage of patients with a confirmed CR (complete response) or PR (partial response) by mRECIST (modified Response Evaluation Criteria in Solid Tumors) v1.1/PCWG3 (Prostate Cancer Working Group 3) criteria. The confirmed response is defined as a CR or PR on subsequent tumor assessment at least 28 days after first response documentation in the absence of confirmed progression in bone. CR is disappearance of all target and non-target lesions; any pathological lymph nodes (whether target or non-target) must have reduction in short axis to <10 mm. PR is at least a 30% decrease in the sum of the diameters of target lesions, taking as reference the baseline sum of diameters.
Measured: Assessments every 8 weeks from study day 1 for the first 24 weeks, and then every 12 weeks until disease progression, death, or initiation of subsequent treatment. Total follow-up was up to approximately 3 years.
Duration of Response (DOR) by Gene in Patients With Confirmed Response Per Central Independent Radiology Review (IRR)
A secondary efficacy endpoint is DOR by central IRR. The DOR is defined as the time from the date that a confirmed response per modified RECIST Version 1.1/PCWG3 is first reported to the time that progressive disease (PD) is first documented. Progressive disease is defined using RECIST v1.1, as at least a 20% increase in the sum of the diameters of target lesions, or an unequivocal increase in non-target lesions, or the appearance of new lesions. PCWG3 criteria is used to document evidence of disease progression in bone lesions.
Measured: Assessments every 8 weeks from study day 1 for the first 24 weeks, and then every 12 weeks until disease progression, death, or initiation of subsequent treatment. Total follow-up was up to approximately 3 years.
Duration of Response (DOR) by Gene in Patients With Confirmed Response Per Investigator
A secondary efficacy endpoint is DOR as assessed by the investigator. The DOR is defined as the time from the date that a confirmed response per modified RECIST Version 1.1/PCWG3 is first reported to the time that progressive disease (PD) is first documented. Progressive disease is defined using RECIST v1.1, as at least a 20% increase in the sum of the diameters of target lesions, or an unequivocal increase in non-target lesions, or the appearance of new lesions. PCWG3 criteria is used to document evidence of disease progression in bone lesions.
Measured: Assessments every 8 weeks from study day 1 for the first 24 weeks, and then every 12 weeks until disease progression, death, or initiation of subsequent treatment. Total follow-up was up to approximately 3 years.
Confirmed PSA Response (≥ 50% Decrease) by Gene as Assessed by Local Laboratory
A secondary endpoint is confirmed PSA (prostate-specific antigen) response (≥ 50% reduction) as assessed by local laboratory. Confirmed PSA response is analyzed for all patients who had PSA value at baseline and is defined as the percentage of patients having 2 consecutive PSA values (at least 3 weeks apart) that are at least 50% lower than baseline and that occur prior to PSA progression. PSA progression is defined as a ≥ 25% increase and absolute increase of ≥ 2 ng/mL above the nadir in PSA.
Measured: PSA assessments were done at baseline, Week 5, Week 9, every 4 weeks thereafter, and at Treatment Discontinuation. Total follow-up was up to approximately 39 months.
Confirmed PSA Response (≥ 90% Decrease) by Gene as Assessed by Local Laboratory
A secondary endpoint is confirmed PSA (prostate-specific antigen) response (≥ 90% reduction) as assessed by local laboratory. Confirmed PSA response is analyzed for all patients who had PSA value at baseline and is defined as the percentage of patients having 2 consecutive PSA values (at least 3 weeks apart) that are at least 90% lower than baseline and that occur prior to PSA progression. PSA progression is defined as a ≥ 25% increase and absolute increase of ≥ 2 ng/mL above the nadir in PSA.
Measured: PSA assessments were done at baseline, Week 5, Week 9, every 4 weeks thereafter, and at Treatment Discontinuation. Total follow-up was up to approximately 39 months.
Radiologic Progression-free Survival (rPFS) by Gene in All Patients Per Central Independent Radiology Review (IRR)
A secondary efficacy endpoint is Radiologic Progression-free Survival (rPFS) assessed by IRR. rPFS is defined as the time from first dose of rucaparib to the date of first objective evidence of radiographic progression (soft tissue or bone lesion) or death due to any cause, whichever occurs first, plus 1 day. Radiographic disease progression includes confirmed bone disease progression and soft tissue disease progression adjudicated by IRR using the PCWG3 guidelines for bone disease and modified RECIST Version 1.1 for soft tissue disease.
Measured: Assessments every 8 weeks from study day 1 for the first 24 weeks, and then every 12 weeks until disease progression, death, or initiation of subsequent treatment. Total follow-up was up to approximately 3 years.
Radiologic Progression-free Survival (rPFS) by Gene in All Patients Per Investigator
A secondary efficacy endpoint is Radiologic Progression-free Survival (rPFS) assessed by Investigator. rPFS is defined as the time from first dose of rucaparib to the date of first objective evidence of radiographic progression (soft tissue or bone lesion) or death due to any cause, whichever occurs first, plus 1 day. Radiographic disease progression includes confirmed bone disease progression and soft tissue disease progression using the PCWG3 guidelines for bone disease and modified RECIST Version 1.1 for soft tissue disease.
Measured: Assessments every 8 weeks from study day 1 for the first 24 weeks, and then every 12 weeks until disease progression, death, or initiation of subsequent treatment. Total follow-up was up to approximately 3 years.
Overall Survival (OS) by Gene
A secondary efficacy endpoint is Overall Survival (OS). OS is defined as the date from first dose of rucaparib to the date of death due to any cause, +1 day.
Measured: From date of first dose until event, loss to follow-up, withdrawal of consent, or study closure: an overall median of approximately 33.1 months
Clinical Benefit Rate (CBR) by Gene Per Central Independent Radiology Review (IRR)
A secondary efficacy endpoint is Clinical Benefit Rate (CBR) assessed by IRR. CBR is defined as the number of patients without radiographic progression (defined by modified RECIST Version 1.1/ PCWG3 criteria) who were continuing with study drug treatment through the given time interval divided by the number of patients who had the given amount of follow-up. Clinical benefit rates are summarized at 6 and 12 months.
Measured: Assessments every 8 weeks from study day 1 for the first 24 weeks, and then every 12 weeks until disease progression, death, or initiation of subsequent treatment. Total follow-up was up to approximately 3 years.
Clinical Benefit Rate (CBR) by Gene Per Investigator
A secondary efficacy endpoint is Clinical Benefit Rate (CBR) assessed by Investigator. CBR is defined as the number of patients without radiographic progression (defined by modified RECIST Version 1.1/ PCWG3 criteria) who were continuing with study drug treatment through the given time interval divided by the number of patients who had the given amount of follow-up. Clinical benefit rates are summarized at 6 and 12 months.
Measured: Assessments every 8 weeks from study day 1 for the first 24 weeks, and then every 12 weeks until disease progression, death, or initiation of subsequent treatment. Total follow-up was up to approximately 3 years.
Time to PSA Progression by Gene
A secondary efficacy endpoint is time to PSA progession. Time to PSA progression is defined as the time from first dose of rucaparib to the date that a ≥ 25% increase and absolute increase of ≥ 2 ng/mL above the nadir (or baseline if there was no PSA decline after baseline) in PSA was measured, plus 1 day. The increase must be confirmed by a second consecutive assessment conducted at least 3 weeks later (unless the PSA progression occurred at the last recorded PSA assessment). If confirmed, the date used for time of PSA progression is the earlier of the 2 PSA dates.
Measured: PSA assessments were done at baseline, Week 5, Week 9, every 4 weeks thereafter, and at Treatment Discontinuation. Total follow-up was up to approximately 39 months.
Steady State Trough (Cmin) Level Rucaparib Concentrations
Trough (Cmin) concentrations of rucaparib are summarized for all patients with at least one PK sample collected. The absolute values of rucaparib plasma concentration at each time point are presented by gene.
Measured: Participants were assessed at Study Day 29, Day 57, Day 85 and Day 113
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted2 Nov 2016 (estimated)
- Study start15 Feb 2017
- Primary completion18 Jul 2021
- Study completion27 Jul 2021
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (4)Papers the sponsor has linked to this study.
- Other trials for Metastatic Castration Resistant Prostate CancerStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 2
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 277 participants (actual)
Sponsor and investigators
- Lead sponsor
- pharmaand GmbH
- Sponsor type
- Industry (pharma, biotech, devices)
- Collaborators
- Foundation Medicine
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02952534
- Sponsor's protocol ID
- CO-338-052
- Other IDs
- 2016-003162-13, 2016
- Acronym
- TRITON2
- Status last verified
- Jun 2023
- First submitted
- 24 Oct 2016
- Last updated
- 9 Jun 2023
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- Yes
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
- Individual data sharing
- Yes: De-identified datasets for study results will be made available to qualified researchers in compliance with applicable privacy laws and data protection regulations. Data will be provided by Clovis Oncology.
Publications
Abida W, Campbell D, Patnaik A, Bryce AH, Shapiro J, Bambury RM, Zhang J, Burke JM, Castellano D, Font A, Ganju V, Hardy-Bessard AC, McDermott R, Sautois B, Spaeth D, Voog E, Piulats JM, Pintus E, Ryan CJ, Merseburger AS, Daugaard G, Heidenreich A, Fizazi K, Loehr A, Despain D, Simmons AD, Dowson M, Go J, Watkins SP, Chowdhury S. Rucaparib for the Treatment of Metastatic Castration-resistant Prostate Cancer Associated with a DNA Damage Repair Gene Alteration: Final Results from the Phase 2 TRITON2 Study. Eur Urol. 2023 Sep;84(3):321-330. doi: 10.1016/j.eururo.2023.05.021. Epub 2023 Jun 3.
PubMed 37277275Collins K, Cheng L. Reprint of: morphologic spectrum of treatment-related changes in prostate tissue and prostate cancer: an updated review. Hum Pathol. 2023 Mar;133:92-101. doi: 10.1016/j.humpath.2023.02.007. Epub 2023 Mar 8.
PubMed 36898948Green ML, Ma SC, Goble S, Giordano H, Maloney L, Simmons AD, Beltman J, Harding TC, Xiao JJ. Population pharmacokinetics of rucaparib in patients with advanced ovarian cancer or other solid tumors. Cancer Chemother Pharmacol. 2022 May;89(5):671-682. doi: 10.1007/s00280-022-04413-7. Epub 2022 Apr 10.
PubMed 35397664Maia MC, Salgia M, Pal SK. Harnessing cell-free DNA: plasma circulating tumour DNA for liquid biopsy in genitourinary cancers. Nat Rev Urol. 2020 May;17(5):271-291. doi: 10.1038/s41585-020-0297-9. Epub 2020 Mar 17.
PubMed 32203306
Study at a glance
From the registry record, last updated by the sponsor on 9 Jun 2023. Recruitment status is as the sponsor reported it: confirm with the study team.
- 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
- ClinicalTrials.gov ID
- NCT02952534
- Acronym / sponsor ID
- TRITON2 / CO-338-052
- Keywords
- CRPC, PARP inhibitor, PARPi, BRCA, ATM, HRD, TRITON, homologous recombination
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 277 participants (actual)
- Lead sponsor
- pharmaand GmbHIndustry (pharma, biotech, devices)
- Collaborators
- Foundation Medicine
- Study start
- 15 Feb 2017 (actual)
- Primary completion
- 18 Jul 2021 (actual)
- Study completion
- 27 Jul 2021 (actual)
- First posted
- 2 Nov 2016 (estimated)
- Results
- Posted 8 Jun 2022
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
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.
Study design
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Rucaparib | Experimental | Drug: RucaparibOral rucaparib (monotherapy) |
Who may qualify
- Ages
- 18 years and older
- Sex
- Male only
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (5 listed)
- 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
Key exclusion criteria (4 listed)
- 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
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| RucaparibAlso: CO-338Rucaparib will be administered daily | Drug | Rucaparib |
Primary outcome
Confirmed Objective Response Rate (ORR) by Gene in Patients With Measurable Disease at Baseline Per Central Independent Radiology Review (IRR)
Time frame: Assessments every 8 weeks from study day 1 for the first 24 weeks, and then every 12 weeks until disease progression, death, or initiation of subsequent treatment. Total follow-up was up to approximately 3 years.
The primary efficacy endpoint is confirmed radiographic ORR by central IRR. ORR is defined as the percentage of patients with a confirmed CR (complete response) or PR (partial response) by mRECIST (modified Response Evaluation Criteria in Solid Tumors) v1.1/PCWG3 (Prostate Cancer Working Group 3) criteria. The confirmed response is defined as a CR or PR on subsequent tumor assessment at least 28 days after first response documentation in the absence of confirmed progression in bone. CR is disappearance of all target and non-target lesions; any pathological lymph nodes (whether target or non-target) must have reduction in short axis to <10 mm. PR is at least a 30% decrease in the sum of the diameters of target lesions, taking as reference the baseline sum diameters.
12 secondary outcomes
Confirmed Objective Response Rate (ORR) by Gene in Patients With Measurable Disease at Baseline Per Investigator (INV)
Time frame: Assessments every 8 weeks from study day 1 for the first 24 weeks, and then every 12 weeks until disease progression, death, or initiation of subsequent treatment. Total follow-up was up to approximately 3 years.
Duration of Response (DOR) by Gene in Patients With Confirmed Response Per Central Independent Radiology Review (IRR)
Time frame: Assessments every 8 weeks from study day 1 for the first 24 weeks, and then every 12 weeks until disease progression, death, or initiation of subsequent treatment. Total follow-up was up to approximately 3 years.
Duration of Response (DOR) by Gene in Patients With Confirmed Response Per Investigator
Time frame: Assessments every 8 weeks from study day 1 for the first 24 weeks, and then every 12 weeks until disease progression, death, or initiation of subsequent treatment. Total follow-up was up to approximately 3 years.
Confirmed PSA Response (≥ 50% Decrease) by Gene as Assessed by Local Laboratory
Time frame: PSA assessments were done at baseline, Week 5, Week 9, every 4 weeks thereafter, and at Treatment Discontinuation. Total follow-up was up to approximately 39 months.
Confirmed PSA Response (≥ 90% Decrease) by Gene as Assessed by Local Laboratory
Time frame: PSA assessments were done at baseline, Week 5, Week 9, every 4 weeks thereafter, and at Treatment Discontinuation. Total follow-up was up to approximately 39 months.
Radiologic Progression-free Survival (rPFS) by Gene in All Patients Per Central Independent Radiology Review (IRR)
Time frame: Assessments every 8 weeks from study day 1 for the first 24 weeks, and then every 12 weeks until disease progression, death, or initiation of subsequent treatment. Total follow-up was up to approximately 3 years.
Radiologic Progression-free Survival (rPFS) by Gene in All Patients Per Investigator
Time frame: Assessments every 8 weeks from study day 1 for the first 24 weeks, and then every 12 weeks until disease progression, death, or initiation of subsequent treatment. Total follow-up was up to approximately 3 years.
Overall Survival (OS) by Gene
Time frame: From date of first dose until event, loss to follow-up, withdrawal of consent, or study closure: an overall median of approximately 33.1 months
Clinical Benefit Rate (CBR) by Gene Per Central Independent Radiology Review (IRR)
Time frame: Assessments every 8 weeks from study day 1 for the first 24 weeks, and then every 12 weeks until disease progression, death, or initiation of subsequent treatment. Total follow-up was up to approximately 3 years.
Clinical Benefit Rate (CBR) by Gene Per Investigator
Time frame: Assessments every 8 weeks from study day 1 for the first 24 weeks, and then every 12 weeks until disease progression, death, or initiation of subsequent treatment. Total follow-up was up to approximately 3 years.
Time to PSA Progression by Gene
Time frame: PSA assessments were done at baseline, Week 5, Week 9, every 4 weeks thereafter, and at Treatment Discontinuation. Total follow-up was up to approximately 39 months.
Steady State Trough (Cmin) Level Rucaparib Concentrations
Time frame: Participants were assessed at Study Day 29, Day 57, Day 85 and Day 113
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 9 Jun 2023.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Derived from this study: PubMed 37277275Abida W, Campbell D, Patnaik A, Bryce AH, Shapiro J, Bambury RM, Zhang J, Burke JM, Castellano D, Font A, Ganju V, Hardy-Bessard AC, McDermott R, Sautois B, Spaeth D, Voog E, Piulats JM, Pintus E, Ryan CJ, Merseburger AS, Daugaard G, Heidenreich A, Fizazi K, Loehr A, Despain D, Simmons AD, Dowson M, Go J, Watkins SP, Chowdhury S. Rucaparib for the Treatment of Metastatic Castration-resistant Prostate Cancer Associated with a DNA Damage Repair Gene Alteration: Final Results from the Phase 2 TRITON2 Study. Eur Urol. 2023 Sep;84(3):321-330. doi: 10.1016/j.eururo.2023.05.021. Epub 2023 Jun 3.
- Derived from this study: PubMed 36898948Collins K, Cheng L. Reprint of: morphologic spectrum of treatment-related changes in prostate tissue and prostate cancer: an updated review. Hum Pathol. 2023 Mar;133:92-101. doi: 10.1016/j.humpath.2023.02.007. Epub 2023 Mar 8.
- Derived from this study: PubMed 35397664Green ML, Ma SC, Goble S, Giordano H, Maloney L, Simmons AD, Beltman J, Harding TC, Xiao JJ. Population pharmacokinetics of rucaparib in patients with advanced ovarian cancer or other solid tumors. Cancer Chemother Pharmacol. 2022 May;89(5):671-682. doi: 10.1007/s00280-022-04413-7. Epub 2022 Apr 10.
- Derived from this study: PubMed 32203306Maia MC, Salgia M, Pal SK. Harnessing cell-free DNA: plasma circulating tumour DNA for liquid biopsy in genitourinary cancers. Nat Rev Urol. 2020 May;17(5):271-291. doi: 10.1038/s41585-020-0297-9. Epub 2020 Mar 17.
- Individual participant dataSharing planned: Yes. De-identified datasets for study results will be made available to qualified researchers in compliance with applicable privacy laws and data protection regulations. Data will be provided by Clovis Oncology.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
149 sites in 12 countries: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 2 study testing Rucaparib in people with Metastatic Castration Resistant Prostate Cancer, run by pharmaand GmbH at 149 sites in 12 countries.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 5 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 9 Jun 2023. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 149 sites in United States, Spain, Germany, United Kingdom, Australia and 7 more countries. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 8 Jun 2022). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Confirmed Objective Response Rate (ORR) by Gene in Patients With Measurable Disease at Baseline Per Central Independent Radiology Review (IRR) (time frame: Assessments every 8 weeks from study day 1 for the first 24 weeks, and then every 12 weeks until disease progression, death, or initiation of subsequent treatment. Total follow-up was up to approximately 3 years.). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT02952534, which also lists 4 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 9 Jun 2023.