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Talazoparib With Androgen Deprivation Therapy and Abiraterone for the Treatment of Castration Sensitive Prostate Cancer

Stage IVB Prostate Cancer AJCC v8 Clinical Trial

Official title:
Phase II Study of Talazoparib With Androgen Deprivation Therapy and Abiraterone in Castration Sensitive Prostate Cancer

Clinical Trial Summary

This phase II trial studies the effect of talazoparib with androgen deprivation therapy and abiraterone in treating castration sensitive prostate cancer patients. Talazoparib is an inhibitor of PARP, an enzyme that helps repair deoxyribonucleic acid (DNA) when it becomes damaged. Blocking PARP may help keep tumor cells from repairing their damaged DNA, causing them to die. PARP inhibitors are a type of targeted therapy. Androgen can cause the growth of prostate tumor cells. Degarelix, leuprolide acetate, bicalutamide, goserelin acetate, and abiraterone lowers the amount of androgen made by the body. This may help stop the growth of tumor cells that need androgen to grow. Giving talazoparib with androgen deprivation therapy and abiraterone may improve cancer control for patients with castration sensitive prostate cancer.

Clinical Trial Description

PRIMARY OBJECTIVES: I. Increase the efficacy of first-line therapy for men with metastatic castration-sensitive prostate cancer by adding the PARP inhibitor talazoparib to standard therapy with androgen deprivation therapy (ADT) + abiraterone acetate (abiraterone). II. Study the efficacy of abiraterone and talazoparib in an ethnically diverse population. III. Evaluate whether androgen receptor genetic variation may identify a subpopulation of patients who benefit, even in the absence of homologous repair deficiency mutations. OUTLINE: Patients receive talazoparib orally (PO) once daily (QD), abiraterone acetate PO QD, and prednisone PO QD on days 1-28. Patients also receive androgen deprivation therapy consisting of degarelix subcutaneously (SC) on day 1; leuprolide acetate intramuscularly (IM) on day 1 and bicalutamide PO QD on days 1-28 of cycle 1 and then leuprolide acetate IM on day 1 of subsequent cycles; leuprolide acetate IM on day 1 and bicalutamide PO QD on days 1-28 of cycle 1 and then leuprolide acetate IM on day 1 of cycles 2, 5, 8, and 11; or goserelin acetate SC monthly or every 3 months. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. After completion of study treatment, patients are followed up at 30 days. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT04734730
Study type Interventional
Source City of Hope Medical Center
Contact
Status Recruiting
Phase Phase 2
Start date May 4, 2021
Completion date August 23, 2027
View Details
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