PSA is awell-known biomarker in prostate cancer and the correlation of log PSA (lpsa) toeight clinical variables was analysed, including log cancer volume (lca), logprostate weight (lweight), age, log of benign prostatic hyperplasia amount(lbph), seminal vesicle invasion (svi), log of capsular penetration (lcp),Gleason score (gleason), and percent of Gleason scores 4 or 5 (pgg45). Here, KLK3 is linked to prostate carcinoma.