KLK3 and metabolic syndrome: The percentage of PSA levels (< 10, 10–20, > 20 ng/ml), Gleason scores (≤ 6, 7, ≥ 8) and clinical stages (≤ T2a, T2b, ≥ T2c) in MetS group were different compared to non-MetS group (P < 0.001, = 0.045, < 0.001, respectively).