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OncoMatch/Clinical Trials/NCT06844383

A Study of Talazoparib With or Without Enzalutamide in People With Prostate Cancer Who Have Previously Received Abiraterone Acetate or Darolutamide

Is NCT06844383 recruiting? Yes, currently enrolling (Sep 2026). This Phase 2 trial studies multiple treatments including Talazoparib with enzalutamide and Talazoparib for prostate cancer (adenocarcinoma).

Phase 2RecruitingProstate Cancer Clinical Trials ConsortiumNCT06844383Data as of Sep 2026

Treatment: Talazoparib with enzalutamide · TalazoparibThe purpose of this study is to find out whether talazoparib in combination with enzalutamide or talazoparib alone delays cancer progression in people with metastatic castration-resistant prostate cancer (mCRPC) who have homologous recombination repair (HRR) mutations and have previously received abiraterone acetate or darolutamide

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Extracted eligibility criteria

Treatments studied

Targeted therapy

Talazoparib

Endocrine / hormonal

Talazoparib with enzalutamide

Cancer type

Prostate Cancer

Biomarker criteria

Required: ATM pathogenic mutation

Required: ATR pathogenic mutation

Required: BRCA1 pathogenic mutation

Required: BRCA2 pathogenic mutation

Required: CDK12 pathogenic mutation

Required: CHEK2 pathogenic mutation

Required: FANCA pathogenic mutation

Required: MLH1 pathogenic mutation

Required: MRE11A pathogenic mutation

Required: NBN pathogenic mutation

Required: PALB2 pathogenic mutation

Required: RAD51C pathogenic mutation

Disease stage

Metastatic disease required

Performance status

ECOG 0–2(Ambulatory, capable of self-care)

Demographics

Male only

Prior therapy

Must have received: abiraterone acetate or darolutamide (abiraterone acetate, darolutamide) — mHSPC, locally advanced disease, or non-metastatic castration-resistant disease

Progressed ... while receiving either abiraterone acetate with prednisone for mHSPC or locally advanced disease, OR darolutamide for mHSPC, locally advanced disease, or non-metastatic castration-resistant disease

Cannot have received: androgen receptor pathway inhibitor for metastatic CRPC

Exception: less than 12 weeks

Prior treatment for metastatic CRPC with an ARPI for ≥ 12 weeks

Cannot have received: abiraterone acetate with prednisone, enzalutamide, or apalutamide for non-metastatic CRPC (abiraterone acetate, enzalutamide, apalutamide)

Exception: less than 12 weeks

Prior treatment for non-metastatic CRPC with abiraterone acetate with prednisone, enzalutamide, or apalutamide for ≥ 12 weeks

Cannot have received: PARP inhibitor

Prior treatment with a PARP inhibitor

Cannot have received: platinum-based chemotherapy for prostate cancer

Prior platinum-based chemotherapy for the treatment of prostate cancer

Lab requirements

Blood counts

Absolute neutrophil count ≥ 1,500/µl; Hemoglobin ≥ 9g/dl; Platelet count ≥ 100,000/µl

Kidney function

Creatinine ≤ 1.5 x the institutional upper limit of normal (ULN); Potassium ≥ 3.5 mmol/L (within institutional normal range)

Liver function

Bilirubin ≤ 1.3 x ULN (unless documented Gilbert's disease); AST ≤ 2.5 x ULN; ALT ≤ 2.5 x ULN

Normal organ function with acceptable initial laboratory values within 35 days of treatment start: Absolute neutrophil count ≥ 1,500/µl; Hemoglobin ≥ 9g/dl; Platelet count ≥ 100,000/µl; Creatinine ≤ 1.5 x the institutional upper limit of normal (ULN); Potassium ≥ 3.5 mmol/L (within institutional normal range); Bilirubin ≤ 1.3 x ULN (unless documented Gilbert's disease); AST ≤ 2.5 x ULN; ALT ≤ 2.5 x ULN

Structured fields extracted by AI. May contain errors — verify against the official protocol.

US trial sites

  • City of Hope · Duarte, California
  • UCSD Moores Cancer Center · La Jolla, California
  • Dana Farber Cancer Institute · Boston, Massachusetts
  • Masonic Cancer Center · Minneapolis, Minnesota
  • Memorial Sloan Kettering Cancer Center · New York, New York

Showing up to 5 US sites.

See all sites on ClinicalTrials.gov →

Frequently asked questions

Is NCT06844383 currently recruiting?

Yes, this trial is currently recruiting patients.

Are there prior therapy exclusions?

Yes. Prior androgen receptor pathway inhibitor for metastatic CRPC, abiraterone acetate with prednisone, enzalutamide, or apalutamide for non-metastatic CRPC, PARP inhibitor disqualifies patients from enrollment.

Does this trial require ATM?

Yes, ATM pathogenic mutation is a required biomarker for enrollment.

Does this trial require ATR?

Yes, ATR pathogenic mutation is a required biomarker for enrollment.

Does this trial require BRCA1?

Yes, BRCA1 pathogenic mutation is a required biomarker for enrollment.

Is this trial open to female patients?

No. This trial enrolls male patients only.

Could you qualify for this trial?

Enter your biomarker results to see how this trial's eligibility criteria match your specific cancer profile.

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