TP53 and hepatocellular carcinoma: The analysis by direct sequence of TP53 exons 5, 6, and 8 revealed two point mutations in exon 5 (G12457T/V157F) and exon 8 (G13804A/C275Y) and one SNP in exon 6 (A12708G/R213R) in three (8%) HCC samples of the 34 without 249ser mutation.