Hepatocellular carcinoma is one of the most important liver disease, been the fifth most common cause of cancer, and the second most common cause of cancer-related death worldwide. The presence of aflatoxin B1has become an important factor in identifying the genesis of the HCC. Mutation of the p53 tumor suppressor gene, up-regulation of H19 gene and over-expression of E2F1 protein, have been address at the time to determine which factors are essential in hepatocarcinogenesis, and the synergistic relation with HBV favoring gene mutation.