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  • Title: Association of human leukocyte antigen DP/DQ gene polymorphisms with chronic hepatitis B in Chinese Han and Uygur populations.
    Author: Xiang X, Guo Y, Yang L, Ge Q, Mijit S, Xu F.
    Journal: Infect Genet Evol; 2016 Sep; 43():407-11. PubMed ID: 27291710.
    Abstract:
    Several genome-wide association studies (GWAS) have shown that human leukocyte antigen (HLA) DP/DQ gene polymorphisms are associated with susceptibility to chronic hepatitis B virus (HBV) infection. We clarified the roles of the HLA-DP/DQ gene in HBV infection in different nationalities. Three single nucleotide polymorphisms (SNPs) in HLA-DP (rs9277471, rs9277535 and rs9277542) and the SNP rs9272346 in HLA-DQ were studied. In total, 779 patients were recruited to this study, including 400 Chinese Han and 399 Uygurs. The rs9277535 variant genotypes were directly associated with HBV persistence compared to healthy controls in an additive model of the Chinese Han population (odds ratio [OR]=1.88, 95% confidence interval [CI]=1.03-3.41, P=0.040), and in a recessive model of the Chinese female population (OR=2.02, 95% CI=1.26-3.24, P=0.003). In addition, rs9277471 and rs9277542 variant genotypes significantly decreased the risk of HBV infection compared to healthy controls in an additive model of the Chinese Han population (OR=0.53, 95% CI=0.29-0.98, P=0.042; OR=0.53, 95% CI=0.29-0.97, P=0.039) and in a dominant model of the Chinese female population (OR=0.50, 95% CI=0.31-0.80, P=0.004; OR=0.49, 95% CI=0.31-0.79, P=0.003). The GG genotype of rs9277346 was associated with HBV infection in the Chinese Han population (additive model: OR=0.38, 95%CI=017-0.82, P=0.014; recessive model: OR=0.41, 95% CI=0.19-0.86, P=0.019) and in males (additive model: OR=0.31, 95% CI=0.14-0.65, P=0.002; dominant model: OR=0.65, 95% CI=0.43-0.97, P=0.034; recessive model: OR=0.36, 95% CI=0.18-0.73, P=0.005). In addition, allele G of rs9277346 was marginally related to a reduction in risk for HBV infection in the Uygur population. Our study suggests that HLA-DP/DQ polymorphisms can affect susceptibility and resistance to HBV infection in Chinese populations, and are possibly linked to race and sex.
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