AIMS/BACKGROUND: Prostate cancer is the most common malignancy in men and a leading cause of cancer-related death. Progression from non-metastatic castration-resistant prostate cancer (nmCRPC) to metastatic CRPC (mCRPC) significantly worsens health-related quality of life (HRQoL), increases mortality, and raises healthcare costs. This study assessed the impact of avoiding or delaying progression to mCRPC on HRQ...