KLK3 and posterior cortical atrophy: In order to clarify whether the miR-744 expression was associated with the outcome of PCa patients, we performed Cox regression analysis to confirm the variables of potential prognostic significance and the results suggested that the miR-744 expression (P = 0.006), Gleason score (GS) (P = 0.002), prostate-specific antigen (PSA) (P = 0.005) and lymph node invasion (LNI) (P = 0.002) were independent prognostic factors for biochemical relapse-free survival in patients with PCa.