KLK3 and posterior cortical atrophy: In bivariate correlation analyses, there was no significant association between the sCMG2 concentration and the prostate-specific antigen (PSA) level in PCa patients (p = 0.32; Spearman–Rho; n = 173) or in the whole study group (p = 0.28; Spearman–Rho; n = 377).