Approximately 50% of patients with metastatic castration-resistance prostate cancer (mCRPC) receive only 1 line of active therapy with a median survival of less than 2 years.1 Hence, there is an urgent need to improve patient outcomes in the first-line mCRPC treatment setting.1 In the PROpel phase 3 trial, the administration of olaparib and abiraterone combination in mCRPC patients, irrespective of homologous recombination repair gene mutation (HRRm) status, has achieved statistically significant and clinically meaningful improvements in radiographic progression-free survival (rPFS) than abiraterone monotherapy alone.