Moreover, the faint intact NCoR band observed in HBX positive HCC cells SKHep1 and Snu449 appeared to be slightly higher in molecular weight when compared to NCoR of HepG2 cells, the HBX negative HCC cells; suggesting that NCoR found in HBX positive HCC cells might have undergone some sort of post-translational modification (Figure 1A). This evidence concerns the gene NCOR1 and hepatocellular carcinoma.