EPCAM and hepatocellular carcinoma: Based on the expression level of ZFX and EpCAM in HCC samples, all 242 patients were divided into four groups: I (n = 94), both high ZFX and EpCAM content; II (n = 45), high ZFX but low EpCAM content; III (n = 9), low ZFX but high EpCAM content; and IV (n = 94), both low ZFX and EpCAM content.