MAF was positively correlated with age (P = 0.03) but not associated with metastatic status (P = 0.80), treatment naïve status (P = 0.42), Gleason score (P = 0.23), tumor stage (P = 0.43), or PSA level (P = 0.69) (Figure 5). Here, KLK3 is linked to neoplasm.