Abstract
To derive a more precise estimation of the relationship between TGF-β1 polymorphisms and gastric cancer (GC) risk, we conducted a meta-analysis of all available case–control studies relating the C-509 T, T869C, and G 915C polymorphisms of the TGF-β1 gene to the risk of developing GC. The effect summary odds ratio (OR) and 95 % confidence intervals (CIs) were obtained. Funnel plots and Egger's test were used to estimate publication bias. Finally, 11 studies were included in the final meta-analysis. With respect to C-509 T polymorphism, it was found that significantly increased GC risk was associated with the TT genotype in the recessive genetic model in overall analysis (TT vs. CC + CT: OR = 1.23, 95 % CI 1.09–1.38, P heterogeneity = 0.13) and in Asian population (TT vs. CC + CT: OR = 1.24, 95 % CI 1.10–1.39, P heterogeneity = 0.18). With respect to T869C and G915C polymorphisms, no significant association with GC risk was demonstrated in overall analysis and subgroup analyses according to ethnicity for all genetic models. This meta-analysis suggested that the T allele of TGF-β1 509C/T polymorphism is probably the susceptibility factor for GC.
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This work was not supported by any funds. We would like to express our gratitude to the physicians participating in this study. The authors would also like to thank the editors of this manuscript.
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Wei-wei Chang and Liu Zhang contributed equally to this work.
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Chang, Ww., Zhang, L., Su, H. et al. An updated meta-analysis of transforming growth factor-β1 gene: three polymorphisms with gastric cancer. Tumor Biol. 35, 2837–2844 (2014). https://doi.org/10.1007/s13277-013-1408-5
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DOI: https://doi.org/10.1007/s13277-013-1408-5