Genetic variations of the gene associated with hepatitis C virus (HCV) infection in Yunnan population.

Hepatitis C virus (HCV) infection led to hepatitis C, and even cirrhosis and hepatocellular carcinoma. The gene belonged to interferon (IFN)-stimulated genes (ISGs) and was identified to inhibit different viruses, including HCV. Whether genetic variations of the gene was associated with HCV infection was unclear. We collected 347 HCV patients and 448 general controls to genotype three SNPs in the gene, and analyzed the association between genotypes of SNPs and HCV infection, biochemical indices and disease progression of HCV patients. The results showed that genotype AT of rs77076061 ( = 0.033, OR = 1.515), AG of rs1979262 ( = 0.001, OR = 2.076), and CT of rs12611087 ( = 0.0002, OR = 1.844) were risk factors for HCV infection in Yunnan population. However, genotype TT of rs77076061 (78.1%), GG of rs1979262 (83.9%), and CC of rs12611087 (67.7%) showed statistically lower frequencies in HCV patients than that in controls. No association was found between genotypes of SNPs and biochemical indices or disease progression of patients. Functional prediction and structure alteration of RNA regions contained each single nucleotide polymorphism (SNP) suggested that these genetic variations might influence HCV infection by changing RNA structure. This study firstly investigated the association between genetic variants in the gene and HCV infection.