KRT19 and colorectal carcinoma: The median normalized level of fecal CK19 mRNA was 0.0073 (range, 0.0000-0.0665) in 85 healthy controls, 0.0146 (range, 0.0000-0.1528) in 129 CRC patients, 0.0142 (range, 0.0000-0.1183) in 103 patients without distant metastasis (M0 stage), and 0.0159 (range, 0.0000-0.1528) in 26 patients with distant metastasis (M1 stage).