KLK3 and neoplasm: Twelve tumor indicators, including carbohydrate antigen (CA) 19–9, CA242, CA-125, CA 15-3, neuron-specific enolase, carcinoembryonic antigen, alpha-fetoprotein, total prostate-specific antigen (PSA), free PSA, ferritin, β-human chorionic gonadotropin and growth hormone, were within the normal range when tested at 2 years post-treatment (Table 2).