Additionally, biochemical recurrence (BCR), defined as persisting or rising postoperative PSA(>0.2 ng/mL) on two consecutive measurements, was a common indicator for active surveillance, and Thomas et al. reported that BCR is an independent risk factor for the development of distance metastasis, cancer‐specific mortality, and, to a lesser extent, overall mortality.6 The gene discussed is KLK3; the disease is cancer.