KLK3 and cancer: The area under the receiver-operator characteristic curve (AUC) values for the prediction of cancers of GS ≥ 7 by urinary PSA-AAL and urinary PSA-PhoSL levels were 0.69 (95% confidential interval [CI] = 0.56–0.81, P = 0.0064) and 0.72 (95% CI = 0.60–0.84, P = 0.0014), respectively (Figure 3A).