The association between the Arg280His polymorphism in the XRCC1 gene and the risk of hematological malignancies

The associations between the Arg280His polymorphism in X-ray repair cross-complementing gene 1 (XRCC1 gene) and hematological malignancies have been extensively investigated. However, the results were inconsistent. The objective of the current study was to investigate the associations between the Arg280His polymorphism in XRCC1 gene and the risk of hematological malignancies by meta-analysis. We searched PubMed, Embase, CNKI, Wanfang, and Weipu databases, covering all studies until 07 Aug 2013. Statistical analysis was performed by using the Revman4.2 software and the Stata10.0 software. A total of 2,650 cases and 3,856 controls in 12 case–control studies concerning the Arg280His polymorphism were included. The results suggested that the Arg280His polymorphism might not be associated with risk of hematological malignancies (OR = 1.08, 95%CI = 0.86–1.35, P = 0.50). In the subgroup analyses by cancer types and ethnicity, no significant associations were found among different cancers or different ethnicities. The current meta-analysis indicated that the Arg280His polymorphism in the XRCC1 gene might not be a risk factor for hematological malignancies. In future, more large-scale case–control studies are needed to validate these results.