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Sci Rep. 2015 Oct 14;5:14933. doi: 10.1038/srep14933.

Quantitative assessment of common genetic variations in HLA-DP with hepatitis B virus infection, clearance and hepatocellular carcinoma development.

Author information

1
The Affiliated Hospital, Guizhou Medical University, Beijing Road 9, Guiyang 550004, Guizhou, China.
2
The First Affiliated Hospital, Soochow University, Shizi Street 188, Suzhou 215006, Jiangsu, China.
3
Department of Eugenics and Genetics, Guiyang Maternal and Child Health-Care Hospital, Ruijin South Road 63, Guiyang 550003, Guizhou, China.

Abstract

Hepatitis B virus (HBV) infection is the predominant risk factor for chronic hepatitis B (CHB), liver cirrhosis (LC) and hepatocellular carcinoma (HCC). Recently, genome-wide association studies have identified human leukocyte antigen (HLA)-DP polymorphisms (rs3077 and rs9277535) as a new chronic HBV infection susceptibility locus. Since then, the relationship between HLA-DP polymorphisms and various outcomes of HBV infection has been reported. However, the results have been inconclusive. To derive a more precise estimation of the relationship between HLA-DP polymorphisms and various outcomes of HBV infection, a meta-analysis of 62,050 subjects from 29 case-control studies was performed. We found that rs3077 and rs9277535 in HLA-DP significantly decreased HBV infection risks and increased HBV clearance possibility in a dose-dependent manner. In the subgroup analysis by ethnicity, study design and sample size, significant associations were found for these polymorphisms in almost all comparisons. Meanwhile, haplotype analyses of the two polymorphisms revealed a significant association between the combination of these alleles and HBV infection outcomes. However, no significant results were observed in HCC development. Our results further confirm that genetic variants in the HLA-DP locus are strongly associated with reduced HBV infection and increased the likelihood of spontaneous viral clearance.

PMID:
26462556
PMCID:
PMC4604517
DOI:
10.1038/srep14933
[Indexed for MEDLINE]
Free PMC Article

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