title: [Relationship between hepatocellular carcinoma and the interaction between NQO1 polymorphisms and environmental factors].
abstract: OBJECTIVE
  To study the relationship between hepatocellular carcinoma (HCC) and the interaction of polymorphisms in the NAD(P)H:quinone oxidoreductase (NQO1) gene with environmental factors using a hospital-based case-control study. FMETHODS: our-hundred newly diagnosed HCC cases and 400 healthy individuals (non-tumor controls) were enrolled in the study. Demographic information and medical history was obtained by questionnaire. TaqMan minor groove binder real-time PCR was carried out to detect the NQO1 C609T genotype using blood-derived DNA from all study participants. Unconditional logistic regression analysis was carried out to estimate the odds ratios (ORs) and 95% confidence intervals (CIs).
  
  
  RESULTS
  The frequencies of NQO1 609 CC, CT and TT genotypes were 23.75%, 50.25% and 28.00% in the HCC group, and 37.55%, 43.75% and 18.25% in the control group. The differences between the HCC and control group reached statistical significance (all P less than 0.05). The ORs of NQO1 609 CT and TT genotypes were significantly higher compared to the CC genotype; the adjusted OR(95% CI) of CT was 2.106(1.137-3.110) and of TT was 2.564(1.357-4.744). Individuals carrying the NQO1 609 T allelic gene had a significantly higher risk of HCC than those carrying the C allelic gene; the adjusted OR(95% CI) was 1.86(1.235-2.980). Interactions were found between hepatitis B virus infection with hepatitis B surface antigen (HBsAg)-positivity and NQO1 gene polymorphisms (adjusted OR: 2.431) and history of cancer (adjusted OR: 8.3592).
  
  
  CONCLUSIONS
  The NQO1 C609T genotype is associated with increased risk of HCC. Interactions between HBsAg-positive infection, history of cancer, and NQO1 gene polymorphisms may contribute to HCC.
authors.affiliation: Public Health School, Guilin Medical University, Guilin, China.
authors.forename: Sheng-kui
authors.initials: SK
authors.lastname: Tan
authors.forename: Xiao-qiang
authors.initials: XQ
authors.lastname: Qiu
authors.forename: Gui-fang
authors.initials: GF
authors.lastname: Tang
authors.forename: Wei-wei
authors.initials: WW
authors.lastname: Wang
authors.forename: Shun
authors.initials: S
authors.lastname: Liu
mesh_terms: D000328:Adult; D000368:Aged; D006528:Carcinoma, Hepatocellular / Q000453:epidemiology / Q000235:genetics*; D016022:Case-Control Studies; D002681:China / Q000453:epidemiology; D005260:Female; D005838:Genotype; D006801:Humans; D008113:Liver Neoplasms / Q000453:epidemiology / Q000235:genetics*; D008297:Male; D008875:Middle Aged; D016660:NAD(P)H Dehydrogenase (Quinone) / Q000235:genetics*; D020641:Polymorphism, Single Nucleotide; D012307:Risk Factors
chemical_list: D016660:NAD(P)H Dehydrogenase (Quinone); C447479:NQO1 protein, human