Clovis Oncology and Strata Oncology Announce Collaboration to Accelerate Enrollment in Rucaparib Prostate Cancer Development Program

Excerpt:

“Clovis Oncology, Inc. (NASDAQ: CLVS) and Strata Oncology, Inc. today announced an agreement to accelerate patient identification and enrollment for Clovis’ ongoing TRITON (Trial of Rucaparib in Prostate Indications) clinical trial program, which includes Phase 2 and Phase 3 clinical trials of rucaparib in metastatic castration-resistant prostate cancer, both of which are open for enrollment.

“Rucaparib is an oral inhibitor of poly ADP-ribose polymerase (PARP), approved in the U.S. in 2016 as Rubraca™ (rucaparib) as monotherapy for the treatment of patients with deleterious BRCA mutation (germline and/or somatic) associated advanced ovarian cancer, who have been treated with two or more chemotherapies, and selected for therapy by an FDA-approved companion diagnostic. Emerging data suggest PARP inhibition may also provide activity in the treatment of metastatic prostate cancers harboring deleterious mutations in BRCA1/2 and ATM or other human genes associated with DNA damage repair. These mutations may be germline (inherited) or somatic (acquired).”

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PARP Inhibition Sensitizes to Low Dose-Rate Radiation TMPRSS2-ERG Fusion Gene-Expressing and PTEN-Deficient Prostate Cancer Cells

Exposure to genotoxic agents, such as irradiation produces DNA damage, the toxicity of which is augmented when the DNA repair is impaired. Poly (ADP-ribose) polymerase (PARP) inhibitors were found to be “synthetic lethal” in cells deficient in BRCA1 and BRCA2 that impair homologous recombination. However, since many tumors, including prostate cancer (PCa) rarely have on such mutations, there is considerable interest in finding alternative determinants of PARP inhibitor sensitivity…”