XRCC1 and hepatocellular carcinoma: The XRCC1 Arg280His polymorphism was not associated with the risk of HCC under the Arg280His homozygous genetic model (OR = 1.43, 95% CI: 0.91–2.25, Pheterogeneity = 0.15), recessive genetic model (OR = 1.15, 95% CI: 0.84–1.56, Pheterogeneity = 0.22), dominant genetic model (OR = 1.19, 95% CI: 1.02–1.38, Pheterogeneity < 0.01), or heterozygous genetic model (OR = 1.20, 95% CI: 1.02–1.41, Pheterogeneity < 0.01).