title: Association of miRNA-122-binding site polymorphism at the interleukin-1 α gene and its interaction with hepatitis B virus mutations with hepatocellular carcinoma risk.
abstract: This study was designed to investigate the contribution of miRNA-122-binding site polymorphism at the IL-1A gene and its multiplicative interactions with hepatitis B virus (HBV) mutations in the risk of hepatocellular carcinoma (HCC). A total of 1021 healthy controls, 302 HBV surface antigen (HBsAg) seroclearance subjects, and 2011 HBsAg-positive subjects (including 1021 HCC patients) were enrolled in this study. Quantitative PCR was used to genotype rs3783553. HBV mutations were determined by direct sequencing. Multivariate logistic regression analyses were performed to test the associations of rs3783553, mutations, and their interactions with the risk of HCC. No significant association was found between rs3783553 and the risk of HCC among healthy controls, HBsAg seroclearance subjects, HBsAg-positive subjects without HCC, and all controls. Additionally, rs3783553 was not significantly associated with chronic HBV infection, liver cirrhosis, HBV e antigen seroconversion, abnormal alanine aminotransferase, and high viral load (> 10(4) copies/ml). However, the TTCA insertion allele of rs3783553 was significantly associated with an increased frequency of HBV C7A mutation compared with homozygous TTCA deletion carriers [(del/ins + ins/ins) vs. del/del, adjusted odds ratio (OR)= 1.48, 95% confidence interval (CI)= 1.09-2.02, P = 0.013]. Multiplicative interaction of rs3783553 with HBV preS deletion significantly reduced the risk of HCC in males, with an adjusted OR of 0.64 (95% CI = 0.42-0.98; P = 0.041) after age and HBV genotype were adjusted. Although rs3783553 did not significantly affect genetic susceptibility to HBV-related HCC, its variant allele may predispose the host to selecting HBV C7A mutation during evolution and significantly reduce the risk of HCC caused by HBV preS deletion. This study provides an insight into the complex host-virus interaction in HBV-induced hepatocarcinogenesis and is helpful in determining HBsAg-positive subjects who are likely to develop HCC.
authors.affiliation: Department of Epidemiology, Second Military Medical University, Shanghai, 200433, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Du
authors.forename: Xue
authors.initials: X
authors.lastname: Han
authors.forename: Rui
authors.initials: R
authors.lastname: Pu
authors.forename: Jiaxin
authors.initials: J
authors.lastname: Xie
authors.forename: Yuwei
authors.initials: Y
authors.lastname: Zhang
authors.forename: Guangwen
authors.initials: G
authors.lastname: Cao
mesh_terms: D000328:Adult; D001665:Binding Sites / Q000235:genetics; D006528:Carcinoma, Hepatocellular / Q000235:genetics*; D016022:Case-Control Studies; D005260:Female; D056726:Genetic Association Studies; D020022:Genetic Predisposition to Disease / Q000235:genetics*; D005838:Genotype; D006509:Hepatitis B / Q000235:genetics; D006515:Hepatitis B virus / Q000235:genetics*; D006801:Humans; D053582:Interleukin-1alpha / Q000235:genetics*; D008113:Liver Neoplasms / Q000235:genetics; D008297:Male; D035683:MicroRNAs; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide / Q000235:genetics*; D012307:Risk Factors
chemical_list: D053582:Interleukin-1alpha; C531907:MIRN122 microRNA, human; D035683:MicroRNAs
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