Early clinical evidence had indicated an advantage for intermittent androgen deprivation (IAD) over continuous androgen deprivation (CAD) in men with hormone-sensitive metastatic prostate cancer (HSMPC). Now, a randomized phase III trial of over 1,500 men showed that IAD was not inferior to CAD for men with HSMPC but was significantly inferior to CAD for men with minimal disease, suggesting CAD is better for this subgroup.