{"preliminary_commentary":{"by_channel":{"x_thread":3},"note":"Preliminary. Indexed podcasts, YouTube videos and X posts that name this trial so far. This is where a report starts, not where it ends: the build searches for more, so finished reports usually cover more than this."},"free_build":{"available":false},"commentary_summary":null,"drugs_tested":[["niraparib","abiraterone"]],"indication":"metastatic castration-resistant prostate cancer","name":"MAGNITUDE","nct_id":"NCT03748641","offer":{"currency":"USD","how":"Order at https://www.erudio.com/contact?report=magnitude-nct03748641. The price is an estimate of verified statements from the commentary indexed so far. Final coverage is set when the report is built. You never pay more than quoted: if the report is delivered at a smaller size, you pay that size's price, and anything paid above it is refunded. We build the report within 24 hours of confirming the order and deliver it when it passes our checks; if it cannot be built to our standard, nothing is charged.","price_rule":"Never more than quoted: the buyer pays the smaller of price_usd and the price the delivered edition is sold at.","price_usd":750,"size":"focused","size_rule":"Focused: 1–150 verified statements, estimated at 14 per indexed commentary source"},"registry":{"acronym":"MAGNITUDE","arms":[{"description":"Participants with L1 metastatic castration-resistant prostate cancer (mCRPC) and homologous recombination repair (HRR) gene alteration will receive combination of niraparib 200 milligrams (mg) or matching placebo and abiraterone acetate (AA) 1000 mg plus prednisone 10 mg. In the open label extension (OLE) phase participants earlier receiving the combination of niraparib and AAP may continue to receive open-label combination of niraparib 200 mg and AA 1000 mg plus prednisone 10 mg and those receiving placebo and AAP may cross over depending on the outcome of study to receive open-label combination of niraparib 200 mg and AA 1000 mg plus prednisone 10 mg.","label":"Cohort 1: Participants with mCRPC and HRR Gene Alteration","type":"EXPERIMENTAL"},{"description":"Participants with L1 mCRPC and no HRR Gene alteration will receive combination of niraparib 200 mg or matching placebo and AA 1000 mg plus prednisone 10 mg. In the OLE phase participants earlier receiving the combination of niraparib and AAP may continue to receive open-label combination of niraparib 200 mg and AA 1000 mg plus prednisone 10 mg and those receiving placebo and AAP may cross over depending on the outcome of study to receive open-label combination of niraparib 200 mg and AA 1000 mg plus prednisone 10 mg.","label":"Cohort 2: Participants with mCRPC and No HRR Gene Alteration","type":"EXPERIMENTAL"},{"description":"Participants with mCRPC will receive a new formulation of niraparib 200 mg and AA 1000 mg tablets plus prednisone 10 mg.","label":"Cohort 3 (Open-label): Participants with mCRPC","type":"EXPERIMENTAL"}],"collaborators":[],"completion_date":{"date":"2027-12-31","type":"ESTIMATED"},"conditions":["Castration-Resistant Prostatic Cancer"],"enrollment":{"count":765,"type":"ACTUAL"},"has_results":true,"interventions":[{"name":"Niraparib","otherNames":["JNJ-64091742"],"type":"DRUG"},{"name":"Abiraterone Acetate","otherNames":[],"type":"DRUG"},{"name":"Prednisone","otherNames":[],"type":"DRUG"},{"name":"Placebo","otherNames":[],"type":"DRUG"},{"name":"New Formulation of Niraparib and Abiraterone Acetate (AA)","otherNames":[],"type":"DRUG"}],"last_update":"2026-11-03","lead_sponsor":"Janssen Research & Development, LLC","official_title":"A Phase 3 Randomized, Placebo-controlled, Double-blind Study of Niraparib in Combination With Abiraterone Acetate and Prednisone Versus Abiraterone Acetate and Prednisone in Subjects With Metastatic Prostate Cancer","overall_status":"ACTIVE_NOT_RECRUITING","phases":["PHASE3"],"primary_completion_date":{"date":"2021-10-08","type":"ACTUAL"},"primary_outcomes":[{"measure":"Cohort 1: Radiographic Progression-Free Survival (rPFS) as Assessed by Blinded Independent Central Review (BICR)","timeFrame":"Up to 32 months"},{"measure":"Cohort 1 Breast Cancer Gene (BRCA) Subgroup: Radiographic Progression-Free Survival (rPFS) as Assessed by Blinded Independent Central Review (BICR)","timeFrame":"Up to 32 months"}],"references":[{"citation":"Ye D, Saad M, Lee JY, Jung W, Pang ST, Li L, Gurney H, Attard G, Chi KN, Mundle S, Zhuo J, Singh A, Lin Y, Sandhu S. Niraparib With Abiraterone Acetate Plus Prednisone as First-Line Therapy in Patients With Metastatic Castration-Resistant Prostate Cancer With Homologous Recombination Repair Gene Alterations: Final Analysis of the Asian Subgroup From the MAGNITUDE Study. Int J Urol. 2026 Apr;33(4):e70455. doi: 10.1111/iju.70455.","pmid":"42015879","type":"DERIVED"},{"citation":"Russu A, Hazra A, Tian H, Haddish-Berhane N, Perez Ruixo JJ, Boulton M. Population Pharmacokinetics of Niraparib/Abiraterone Acetate Administered as Single-Agent Combination and Dual-Acting Tablets Plus Prednisone for Metastatic Castration-Resistant Prostate Cancer. Adv Ther. 2025 Apr;42(4):1860-1880. doi: 10.1007/s12325-025-03104-y. Epub 2025 Feb 28.","pmid":"40016438","type":"DERIVED"},{"citation":"Rathkopf DE, Roubaud G, Chi KN, Efstathiou E, Attard G, Olmos D, Small EJ, Saad M, Castro E, Kim W, Wu D, Bertzos K, Dibaj S, Zhang J, Francis P, Smith MR. Patient-reported Outcomes for Patients with Metastatic Castration-resistant Prostate Cancer and BRCA1/2 Gene Alterations: Final Analysis from the Randomized Phase 3 MAGNITUDE Trial. Eur Urol. 2025 Oct;88(4):359-369. doi: 10.1016/j.eururo.2024.09.003. Epub 2024 Sep 23.","pmid":"39317633","type":"DERIVED"},{"citation":"Roubaud G, Attard G, Boegemann M, Olmos D, Trevisan M, Antoni L, Pascoe K, Capone C, Van Sanden S, Hashim M, Palmer S, Chi K. Adjustment for imbalances in baseline characteristics in the MAGNITUDE phase 3 study confirms the clinical benefit of niraparib in combination with abiraterone acetate plus prednisone in patients with metastatic prostate cancer. Eur J Cancer. 2024 Sep;209:114183. doi: 10.1016/j.ejca.2024.114183. Epub 2024 Jun 17.","pmid":"39111209","type":"DERIVED"},{"citation":"De Santis M, Breijo SM, Robinson P, Capone C, Pascoe K, Van Sanden S, Hashim M, Trevisan M, Daly C, Reitsma F, van Beekhuizen S, Ruan H, Heeg B, Verzoni E. Feasibility of Indirect Treatment Comparisons Between Niraparib Plus Abiraterone Acetate and Other First-Line Poly ADP-Ribose Polymerase Inhibitor Treatment Regimens for Patients with BRCA1/2 Mutation-Positive Metastatic Castration-Resistant Prostate Cancer. Adv Ther. 2024 Aug;41(8):3039-3058. doi: 10.1007/s12325-024-02918-6. Epub 2024 Jul 3.","pmid":"38958846","type":"DERIVED"},{"citation":"Chi KN, Rathkopf D, Smith MR, Efstathiou E, Attard G, Olmos D, Lee JY, Small EJ, Pereira de Santana Gomes AJ, Roubaud G, Saad M, Zurawski B, Sakalo V, Mason GE, Francis P, Wang G, Wu D, Diorio B, Lopez-Gitlitz A, Sandhu S; MAGNITUDE Principal Investigators. Niraparib and Abiraterone Acetate for Metastatic Castration-Resistant Prostate Cancer. J Clin Oncol. 2023 Jun 20;41(18):3339-3351. doi: 10.1200/JCO.22.01649. Epub 2023 Mar 23.","pmid":"36952634","type":"DERIVED"}],"start_date":{"date":"2019-01-25","type":"ACTUAL"},"study_type":"INTERVENTIONAL","title":"A Study of Niraparib in Combination With Abiraterone Acetate and Prednisone Versus Abiraterone Acetate and Prednisone for Treatment of Participants With Metastatic Prostate Cancer","url":"https://clinicaltrials.gov/study/NCT03748641"},"report":null,"schema_id":"erudio.trial_listing","schema_version":"3.2","state":"listed","state_text":"No report yet. It can be ordered.","url":"https://www.erudio.com/trials/magnitude-nct03748641"}