KLK3 and prostate cancer: Among exosomal proteins evaluated for their potential diagnostic value, PSMA, PSA, PTEN, survivin, p-gp, claudin3, FABP5, gammaglutamyl transferase, EGFR, ITGA3, ITGB1, TM256, and TGM4-ADSV were found elevated in the blood (plasma or serum) or the urine from prostate cancer patients (25, 35, 36, 48, 53, 54, 142, 151, 178, 181, 187–189) (Table 2).