Precision Drug Olaparib May Be Effective Without Hormone Therapy for Some Men with Biochemically Recurrent Prostate Cancer by admin_63069 | Sep 16, 2024 | Related Topics Following treatment with olaparib, 13 participants, including all 11 who had BRCA2 mutations, had a decrease in PSA of at least 50% — a sign that their cancers were receding.