ALDH1A1 and colorectal carcinoma: High ALDH1 expression was also correlated with poor differentiation in eastern CRC patients (OR = 1.88, 95%CI: 1.07–3.30, P = 0.03), but not in colon cancer patients (OR = 1.57, 95%CI: 0.81–3.02, P = 0.18).