ALCAM and colon adenoma: Our results obtained using the random-effects model showed that CD166 expression in CRC had a significantly higher OR than its expression in colonic adenomas or normal colonic mucosa (OR = 3.48, 95% CI = 1.55-7.79, P = 0.002 and OR = 55.13, 95% CI = 2.04-1486.86, P = 0.017, respectively).