KLK6 and colorectal carcinoma: There were significant elevations (p < 0.05) of KLK6 in both stage I & II (11,305.650 ± 1325.765 pg/mL) and stage IV (11,606.040 ± 932.493 pg/mL) when compared with stage III CRC patients (8917.764 ± 479.052 pg/mL).