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A 1:1 matched case-control study on the interaction between HBV, HCV infection and DNA repair gene XPC Ala499Val, Lys939Gln for primary hepatocellular carcinoma
To evaluate the interaction between environmental factors, HBV/HCV infections and DNA repair gene XPC exon 8 Ala499Val, exon 15 Lys939Gln on related risks to primary hepatocellular carcinoma (PHC).
A 1:1 matched case-control study was conducted in Shunde city, Guangdong province. The genotypes of Ala499Val and Lys939Gln were detected by polymerase chain reaction restrictive fragment length polymorphism (PCR-RFLP) analysis, and gene-environment interactions were analyzed by conditional logistic regression.
Among people infected by HBV with non- or at least one mutant gene of Ala499Val carriers, the risk of PHC significantly increased, with ORs as 3.768 (95%CI: 1.137 - 12.485) and 3.667(95%CI: 1.122 - 11.981) respectively. With non- or at least one mutant gene of Lys939Gln, the risk was increasing with ORs as 6.778 (95%CI: 2.025 - 22.688) and 3.152 (95%CI: 1.062 - 9.351) respectively. In those with HCV infection, non- or at least one mutant gene of Ala499Val might increase the risk with ORs as 2.955 (95%CI: 0.5