Abstract
Background and aims
Polymorphisms of p53 gene are known to play an important role in hepatocarcinogenesis. We aimed to investigate the impact of p53 polymorphisms on disease progression by evaluating their prevalence among chronic hepatitis B (CHB) or hepatitis C (CHC) patients with different stages of liver disease.
Methods
A total of 215 CHB, 108 CHC patients with different stages of liver disease and 49 healthy controls were consecutively enrolled. The codon 249 p53 mutations as well as codon 72 polymorphisms were assayed by molecular methods, and their prevalence among the enrolled subjects was evaluated.
Results
All patients and controls had codon 249 wild-type sequences. Among codon 72 sequences, Pro/Pro allele frequency of Hepatitis B-related HCC (31.4%), cirrhosis (26.9%), HBV carriers (26.3%), hepatitis C-related cirrhosis (39.1%), and CHC patients (24%) were higher than that of healthy controls (18.4%). After adjustment for sex and age, codon 72 mutant and mixed type were associated with a higher likelihood of asymptomatic carrier state than those with wild type in CHB patients [odd ratio (OR): 2.53, 95% confidence interval (CI) 1.06–6.03, P = 0.037]. However, the prevalence of codon 72 mutant and mixed type were comparable with wild type among CHC patients with HCC (OR 0.70, 95% CI 0.28–1.72, P = 0.433).
Conclusions
Although serum 249serine p53 mutation is rarely found in Taiwanese patients, HBV carriers have a higher prevalence of codon 72 mutants than patients with much severe liver diseases or HCV infection, which implies that codon 72 mutants may affect at an earlier stage of HBV infection. Further studies are necessary to delineate the interactions of p53 mutations with HBV infection.
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Abbreviations
- HBV:
-
Hepatitis B virus
- HCV:
-
Hepatitis C virus
- LC:
-
Liver cirrhosis
- ASC:
-
Asymptomatic HBV carriers
- CPH:
-
Chronic persistent hepatitis
- CAH:
-
Chronic active hepatitis
- HCC:
-
Hepatocellular carcinoma
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Acknowledgements
We thank colleagues in the National Taiwan University Hospital, Taipei, Taiwan, who enrolled and followed the patients, and research assistants who assisted in laboratory analyses and collected clinical information. This study was supported by grants from the Lotung St Mary’s Hospital (Project No. 97005), and the Department of Heath, Executive Yuan, Taiwan.
Conflict of interest
Pei-Jer Chen: Consultant for Novartis and Roche. Ding-Shinn Chen: Consultant for Novartis and GlaxoSmithKline. Jia-Horng Kao: Consultant for Bristol-Myers Squibb, GlaxoSmithKline, Novartis, Omrix, Roche, and Schering-Plough; on speaker’s bureau for Roche, Bristol-Myers Squibb, GlaxoSmithKline, Novartis, and Schering-Plough. All other authors have nothing to declare.
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Mah, YH., Hsu, CS., Liu, CH. et al. Serum p53 gene polymorphisms and severity of hepatitis B or C-related chronic liver diseases in Taiwan. Hepatol Int 5, 814–821 (2011). https://doi.org/10.1007/s12072-010-9248-5
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DOI: https://doi.org/10.1007/s12072-010-9248-5