Niraparib, Abiraterone Acetate and Prednisone for mHSPC With Deleterious Homologous Recombination… (NCT06392841) | Clinical Trial Compass
WithdrawnPhase 2
Niraparib, Abiraterone Acetate and Prednisone for mHSPC With Deleterious Homologous Recombination Repair Alterations
Stopped: Funder withdrew funding.
0Started 2025-10
Plain-language summary
This is an open label, phase II trial in subjects with treatment naïve, metastatic hormone sensitive prostate cancer (mHSPC) with deleterious homologous recombination repair (HRR) alteration(s). These include pathologic alterations in BRCA 1/2, BRIP1, CHEK2, FANCA, PALB2, RAD51B, and/or RAD54L. A total of 64 people will be enrolled to the study.
Who can participate
Age range
18 Years
Sex
MALE
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion criteria
. Written informed consent and HIPAA authorization for release of personal health information prior to registration. NOTE: HIPAA authorization may be included in the informed consent or obtained separately.
. ≥ 18 years of age at the time of consent.
. Self-identify as Hispanic/Latino or non-Hispanic black racial/ethnic background.
. ECOG Performance Status of ≤ 2 within 30 days prior to registration.
. Histologically confirmed diagnosis of prostate adenocarcinoma.
. Deleterious HRR alteration(s) per any validated test, next generation sequencing (NGS) mutational analysis (tissue or liquid). These include BRCA 1/2, BRIP1, CHEK2, FANCA, PALB2, RAD51B, and/or RAD54L.
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Rate of participants with PSA decline to < 0.2 ng/ml
. Radiographic evidence of metastatic disease as per conventional CT or MRI of chest, abdomen pelvis and bone scan, according to RECIST version 1.1 criteria in subjects with measurable disease and PCWG3 criteria for subjects with bone only disease (1, 2). Evidence of metastatic disease detected on Axumin or PSMA PET/CT will need confirmation on conventional CT or MRI/bone scans.
. Hormone sensitive, treatment naïve/minimally treated \[first generation androgen receptor inhibitor (ARI) such as bicalutamide ≤ 45 days, ADT ± abiraterone acetate plus prednisone ≤ 45 days allowed\]. Prior therapy for localized prostate cancer allowed (including but not limited to radiation therapy, prostatectomy, lymph node dissection ± ADT, must have been completed \> 6 months prior to registration).
Exclusion criteria
. Prostate cancer variants including predominant neuroendocrine features and/or predominant small cell carcinoma of the prostate are excluded.
. Prior treatment with the following is excluded: second generation ARIs such as apalutamide, enzalutamide, darolutamide, or other investigational ARIs; oral ketoconazole as antineoplastic treatment for prostate cancer (allowed if total time on ketoconazole as prostate cancer-directed therapy is ≤ 10 days and discontinued prior to study treatment initiation); chemotherapy or immunotherapy for prostate cancer.
. Radiotherapy/radiopharmaceuticals within 2 weeks of registration.
. History of severe allergic anaphylactic reactions to niraparib/abiraterone acetate tablets or any of their excipients.
. Current evidence of any medical condition that would make prednisone use contraindicated.
. Long-term use of systemically administered corticosteroids (\> 5mg of prednisone or the equivalent) during the study is not allowed (5mg of prednisone or equivalent daily, given with abiraterone acetate, is allowed). Short-term use of corticosteroid for indication other than in combination with abiraterone acetate (≤ 4 weeks, including taper) and locally administered steroids (eg, inhaled, topical, ophthalmic, and intra-articular) are allowed, if clinically indicated.
. Subjects who have had major surgery ≤ 28 days prior to registration.