Shortened 12-Month Androgen Receptor Inhibitor Treatment Combined With Hormone Therapy for Low-Volume Metastatic Prostate Cancer

What this Trial Is About

Researchers are evaluating a shorter treatment duration with androgen receptor pathway inhibitors ARPIs, specifically Apalutamide or Enzalutamide, in patients with low-volume hormone-sensitive metastatic prostate cancer. This phase 3 clinical trial aims to determine if stopping ARPI therapy after 12 months, with the option to restart if the cancer progresses, is not worse than continuing ARPI treatment. The goal is to reduce side effects and costs while maintaining effective disease control. Participants will be randomly assigned after completing 12 months of ARPI treatment to one of two groups one group will continue androgen deprivation therapy ADT combined with ARPI, while the other will stop ARPI after 12 months but may restart it if a confirmed rise in prostate-specific antigen PSA occurs. The PSA confirmation sample must be taken at least four weeks after the initial rise. Treatment will be monitored closely according to these protocols. During the study, participants will be followed for up to 6 years, including 5 years after randomization to track clinical progression-free survival. Researchers will regularly assess disease status, treatment effects, and possible side effects. The study includes regular visits and monitoring to evaluate how long patients remain free from disease progression while comparing the two treatment approaches.

Apa/Enza-short Study: Shorter Treatment With Androgen Receptor Pathway Inhibitor in Patients With Low-volume Metastatic Castration-sensitive Prostate Cancer