BMI1 and hepatocellular carcinoma: Previous reports have indicated that BMI-1 is overexpressed in gastric, ovarian, breast, head and neck, pancreatic, and radiation-induced lung cancers, as well as in primary hepatocellular carcinoma (HCC) and endometrial carcinoma [8, 14, 17, 21, 28, 36, 48, 49].