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14 April 2015 : Meta-Analysis  

Associations between Pre-S Deletion Mutation of Hepatitis B Virus and Risk of Hepatocellular Carcinoma in the Asian Population: A Meta-Analysis

Chao WangABCDEFG, Zhaowei TengABCD, Yun ZhuABCD, Allan Z. ZhaoABCDEFG, Chunhua SunABCDEFG

DOI: 10.12659/MSM.894058

Med Sci Monit 2015; 21:1072-1077


BACKGROUND: Hepatocellular carcinoma (HCC) is the most common liver cancer, leading to many cancer-related deaths worldwide. Several studies have shown an association between pre-S deletion mutation of hepatitis B virus (HBV) and HCC risk, but the results remain conflicting. We aimed to verify HBV pre-S deletion mutations in relation to the risk of HCC.

MATERIAL AND METHODS: We searched the commonly used electronic databases for relevant studies of this association among the Asian population until September 30th, 2014. Odds ratios (ORs) with 95% confidence intervals (CIs) were employed to calculate the association.

RESULTS: A total of 17 case-control studies were screened out, including 2837 HBV-infected patients, of whom 1246 had HCC. The results showed that the frequency of pre-S deletion of HBV in patients with HCC was higher than that in patients without HCC (35.7% vs. 11.5%), indicating the prevalence of this mutation in patients with HCC. Statistically significant correlations were observed for pre-S deletion mutation and risk of HCC in a random-effects model (OR=3.90, 95% CI=2.80–5.44, P<0.00001). This association was also found in Chinese populations (OR=4.84, 95% CI=2.86–8.20, P<0.00001).

CONCLUSIONS: Our data indicate that HBV pre-S deletion mutations might be associated with HCC risk. Their oncogenic role may be important in studying the potential mechanism of HBV hepatocarcinogenesis.

Keywords: Asian Continental Ancestry Group - genetics, Carcinoma, Hepatocellular - virology, Genetic Association Studies, Genetic Predisposition to Disease, Hepatitis B virus - genetics, Liver Neoplasms - virology, Publication Bias, Risk Factors, Sequence Deletion - genetics

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750