Both some pre- and intra-operative variables were associated with longer postoperative LOS; namely, the prostate cancer disease-specific variables of preoperative PSA value and biopsy Gleason score, urinary tract symptoms of dysuria, preoperative laboratory values for WBC, platelet count, serum calcium and blood glucose, and intraoperative variables of operation type, and blood loss. The gene discussed is KLK3; the disease is Familial prostate cancer.