KLK3 and benign prostatic hyperplasia: With respect to the severity of BPH cases (AUASI score), significant positive correlations were observed with the age (r=0.424, p<0.01), PSA (r=0.673, p<0.01), PV (r=0.322, p<0.05) and PSAD (r=0.534, p<0.01).