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Brief Title: Enzalutamide Plus Talazoparib for the Treatment of Hormone Sensitive Prostate Cancer (ZZ-First)
Official Title: A Randomized Phase II Trial to Evaluate the Antitumor Activity of Enzalutamide and Talazoparib (PF-06944076) for the Treatment of Metastatic Hormone-naïve Prostate Cancer
Study ID: NCT04332744
Brief Summary: This is a multicenter, open-label, randomized, two-arm, phase II clinical trial to evaluate the efficacy and safety of talazoparib (PF-06944076) in combination with enzalutamide in patients with metastatic hormone-naïve prostate cancer (mHNPC)
Detailed Description: Men age ≥ 18 years with high-volume mHNPC that are not candidates for curative intent and have not received previous systemic treatment with any other agent for unresectable locally advanced or mHNPC. After signing ICF and confirm eligibility, patients will start treatment with enzalutamide in addition to standard ADT. After 2 cycles of enzalutamide-containing regimen, patients will be randomized in a 1:2 ratio to: Cohort A - Enzalutamide 160 mg orally daily continuously; Cohort B - Enzalutamide 160 mg in combination with talazoparib (PF-06944076) 0.5 mg, both orally daily and continuously in 28-day cycles. In either arm, patients will be requested to continue ADT throughout trial participation (unless surgical castration). Randomization will be stratified based on HR gene alterations (presence versus absence/unknown) detected in the baseline biopsy. Patients will receive treatment until disease progression, unacceptable toxicity, death, or discontinuation from the study treatment for any other reason. Patients discontinuing the study treatment period will enter a post-treatment follow-up period during which survival and at least the first two new anti-cancer therapies will be collected every six months (± 14 days) from the last dose of investigational product until the end of study (EoS).
Minimum Age: 18 Years
Eligible Ages: ADULT, OLDER_ADULT
Sex: MALE
Healthy Volunteers: No
Institut Català d'Oncologia Badalona, Badalona, , Spain
Hospital Clínic i Provicial de Barcelona, Barcelona, , Spain
Hospital del Mar, Barcelona, , Spain
Hospital Vall d'Hebrón, Barcelona, , Spain
Hospital Universitario 12 de Octubre, Madrid, , Spain
Hospital Universitario Virgen de la Victoria, Málaga, , Spain
Instituto Valenciano de Oncología (IVO), Valencia, , Spain
Hospital Universitario Miguel Sevet, Zaragoza, , Spain
Name: Joaquin Mateo
Affiliation: VHIO
Role: PRINCIPAL_INVESTIGATOR