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Certain interleukin polymorphisms might influence predisposition to lung cancer: A meta‐analysis of 35 published studies

Interleukin polymorphisms might influence predisposition to lung cancer (LC), but the results of already published studies regarding the relationship between interleukin polymorphisms and LC were still controversial and ambiguous. So the authors designed this meta‐analysis to more precisely estimate relationship between interleukin polymorphisms and LC by pooling the results of already published related studies. The authors searched Pubmed, Embase, Web of Science, and CNKI for already published studies. Thirty‐five already published studies were pooled and analyzed in this meta‐analysis. The pooled meta‐analyses results showed that distributions of IL‐4 rs2243250 polymorphism among patients and controls from Asian countries differed significantly (dominant comparison: OR = 1.29, 95% CI 1.07–1.55; overdominant comparison: OR = 0.83, 95% CI 0.73–0.95; allele comparison: OR = 1.26, 95% CI 1.03–1.54), and distributions of IL‐10 rs1800872 polymorphism among patients and controls from Caucasian countries also differed significantly (recessive comparison: OR = 0.54, 95% CI 0.35–0.83; overdominant comparison: OR = 1.26, 95% CI 1.05.1.51). No genotypic distribution differences were observed for IL‐4 rs2070874, IL‐6 rs1800795, IL‐6 rs1800796, IL‐8 rs4073, IL‐10 rs1800871, and IL‐10 rs1800896 polymorphisms in pooled meta‐analyses. This meta‐analysis suggested that IL‐4 rs2243250 might influence predisposition to LC in Asians, whereas IL‐10 rs1800872 polymorphism might influence predisposition to LC in Caucasians.