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A single-nucleotide polymorphism (SNP) in the promoter region of MDM2, SNP 309, is associated with hepatocellular carcinoma (HCC) in patients with chronic hepatitis C virus infection. The effect of p53 codon 72 polymorphism Arg72Pro on HCC risk remains inconsistent. This study evaluated the association of MDM2 and p53 polymorphisms with the presence and early onset of HCC in Korean patients with chronic hepatitis B virus (HBV) infection. In total, 583 consecutive patients with chronic HBV infection were classified according to the presence (n = 287) or absence (n = 296) of HCC. The MDM2 SNP 309 and p53 Arg72Pro were genotyped using restriction fragment length polymorphism method. The MDM2 G/G and p53 Pro/Pro genotypes were more frequent in HCC group than in non-HCC group (P &lt; 0.001 and P = 0.004, respectively). Multivariate analysis for the presence of HCC revealed that the odds ratio (OR) for MDM2 G/G over T/T was 4.89 (P &lt; 0.001) and that of p53 Pro/Pro over Arg/Arg was 3.03 (P = 0.006). Combined MDM2 G/G and p53 Pro/Pro had a synergistic effect on HCC risk, with an OR of 20.78 (P &lt; 0.001). The mean age of tumor onset in patients with MDM2 G/G genotype was 50.9 years compared with 55.1 with T/T genotype (P = 0.018) and that with p53 Pro/Pro was 49.7 years compared with 52.9 with Arg/Arg (P = 0.040). Thus, MDM2 SNP 309 and p53 Arg72Pro are associated with the early development of HCC in Korean patients with chronic HBV infection.

MDM2 and p53 polymorphisms are associated with the development of hepatocellular carcinoma in patients with chronic hepatitis B virus infection