Department of Epidemiology and Biostatistics, MOE Key Laboratory of Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing, China.
Hepatology. 2012 May;55(5):1426-31. doi: 10.1002/hep.24799. Epub 2012 Mar 16.
Recent genome-wide association studies showed that four single-nucleotide polymorphisms (SNPs) in human leukocyte antigen (HLA)-DP (rs3077 and rs9277535) and HLA-DQ (rs2856718 and rs7453920) were associated with chronic hepatitis B virus (HBV) infection in Japanese populations. More than 75% of hepatocellular carcinoma (HCC) patients are attributable to persistent infection of hepatitis B virus (HBV), especially in China. We genotyped these four SNPs in 1,300 HBV-positive HCC patients, 1,344 persistent HBV carriers, and 1,344 persons with HBV natural clearance from Southeast China to further test the associations of HLA-DP/DQ variants and with risk of both HBV clearance and HCC development. Logistic regression analyses showed that HLA-DQ rs2856718 significantly decreased host HCC risk, whereas three SNPs were associated with HBV clearance (HLA-DP rs9277535 as well as HLA-DQ rs7453920 and rs2856718). In addition, HLA-DP rs3077 showed an approaching significant effect on susceptibility to HBV persistent infection and HCC development when considering multiple testing adjustments. Taken together, we report, for the first time, that genetic variants in the HLA-DP and HLA-DQ loci may be marker SNPs for risk of both HBV clearance and HCC development.
最近的全基因组关联研究表明,人类白细胞抗原(HLA)-DP(rs3077 和 rs9277535)和 HLA-DQ(rs2856718 和 rs7453920)中的四个单核苷酸多态性(SNP)与日本人群的慢性乙型肝炎病毒(HBV)感染有关。超过 75%的肝细胞癌(HCC)患者归因于乙型肝炎病毒(HBV)的持续感染,尤其是在中国。我们对来自中国东南部的 1300 名 HBV 阳性 HCC 患者、1344 名持续性 HBV 携带者和 1344 名 HBV 自然清除者进行了这四个 SNP 的基因分型,以进一步检验 HLA-DP/DQ 变体与 HBV 清除和 HCC 发展风险的关联。逻辑回归分析表明,HLA-DQ rs2856718 显著降低了宿主 HCC 风险,而三个 SNP 与 HBV 清除相关(HLA-DP rs9277535 以及 HLA-DQ rs7453920 和 rs2856718)。此外,考虑到多次测试调整,HLA-DP rs3077 对 HBV 持续感染和 HCC 发展易感性的影响接近显著。总之,我们首次报道,HLA-DP 和 HLA-DQ 基因座的遗传变异可能是 HBV 清除和 HCC 发展风险的标记 SNP。