As shown in Figure 1A, the level of intact NCoR protein (270 kDa) in all HBX positive HCC cells (SKHep1, PLC, Snu449, Snu387, Snu398, and Snu423) was significantly lower when compared to its level in HBX negative cell HepG2. This evidence concerns the gene NCOR1 and hepatocellular carcinoma.