Jack R. Andrews, MD; Alicia Morgans, MD, MPH; and Murilo de Almeida Luz, MD, discuss how ultralow prostate-specific antigen thresholds (below 0.02) serve as important prognostic biomarkers in metastatic hormone-sensitive prostate cancer, with recent post hoc analyses from the ARANOTE trial showing that patients achieving these ultralow levels with combination androgen deprivation therapy plus darolutamide therapy have significantly better radiographic progression-free survival and time to castration-resistant disease compared with those who don't reach these thresholds.
