KLK3 and neoplasm: General information (age, body mass index (BMI), smoking and drinking history, medical and surgical history, comorbidities, blood-cell counts, blood biochemistry, PS status, pain score, QoL, etc.)and tumor-related information (digital rectal examination (DRE) results, PSA level, testosterone level, Gleason score [38], International Society of Urological Pathology (ISUP) grade [38], Tumor node metastasis (TNM) classification [39], EAU risk group [12], tumor volume assessed by CHAARTED criteria [17], etc.)will be recorded in detail.