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Closed (no longer recruiting)Last updated: 31 January 2024

MAGNITUDE: This phase III trial is trying to determine how effective an oral therapy (niraparib) is in combination with a hormone therapy and a steroid (abiraterone acetate and prednisone, AA-P) in patients with metastatic prostate cancerA 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

Clinical summary

Summary

Participants will be randomised into one of two treating Arms. In one Arm, participants will receive 200mg oral niraparib in combination with 1000mg oral abiraterone acetate and 10mg oral prednisone daily in each 28 day cycle. In the second Arm, participants will receive an oral placebo in combination with 1000mg oral abiraterone acetate and 10mg prednisone daily in each 28 day cycle.

Conditions

This trial is treating patients with prostate cancer.

Cancer

Urinary System Cancers Genitourinary

Age

People18+

Phase

III

Trial Acronym

MAGNITUDE

More information

Trial Identifiers

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Trial sponsor

Janssen-Cilag Pty Ltd

Scientific 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

Eligibility

Inclusion

  • HRR gene alteration (as identified by the sponsor's required assays) as follows:

    1. Cohort 1: positive for HRR gene alteration
    2. Cohort 2: not positive for DRD (that is, HRR gene alteration)
    3. Cohort 3: eligible by HRR status
  • Metastatic disease documented by positive bone scan or metastatic lesions on computed tomography (CT) or magnetic resonance imaging (MRI)
  • Metastatic prostate cancer in the setting of castrate levels of testosterone less than or equal to (<=) 50 nanogram per deciliter (ng/dL) on a gonadotropin releasing hormone analog (GnRHa) or bilateral orchiectomy
  • Able to continue GnRHa during the study if not surgically castrate
  • Score of <= 3 on the brief pain inventory-short form (BPI-SF) question number 3 (worst pain in last 24 hours)

Exclusion

  • Prior treatment with a poly (adenosine diphosphate [ADP]-ribose) polymerase (PARP) inhibitor
  • Systemic therapy (that is, novel second-generation AR-targeted therapy such as enzalutamide, apalutamide, or darolutamide; taxane-based chemotherapy, or more than 4 months of abiraterone acetate plus prednisone [AAP] prior to randomization) in the metastatic castration-resistant prostate cancer (mCRPC) setting; or AAP outside of the mCRPC setting
  • Symptomatic brain metastases
  • History or current diagnosis of myelodysplastic syndrome (MDS)/acute myeloid leukemia (AML)
  • Other prior malignancy (exceptions: adequately treated basal cell or squamous cell skin cancer, superficial bladder cancer, or any other cancer in situ currently in complete remission) <= 2 years prior to randomization, or malignancy that currently requires active systemic therapy

Inclusion

  • Your cancer has spread to other parts of the body.

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.

Ask your doctor if this trial could be right for you.

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