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Title: Vascular endothelial growth factor (VEGF) gene polymorphisms and risk of head and neck cancer: a meta-analysis involving 2,444 individuals.
Author: Leng WD, He MN, Chen QL, Gong H, Zhang L, Zeng XT.
Journal: Mol Biol Rep; 2013 Oct; 40(10):5987-92. PubMed ID: 24057180.
Abstract:
The association between vascular endothelial growth factor (VEGF) gene polymorphisms and risk of head and neck cancer (HNC) were investigated in many published studies; however, the currently available results are inconclusive. Therefore, we conducted this meta-analysis for deriving a more precise estimation of association between VEGF polymorphisms and the risk of HNC. Finally, we yield eight case-control studies involving six polymorphisms contain 2,444 individuals from PubMed, Embase, and CNKI up to January 30, 2013 (last updated on May 4, 2013). The results of meta-analysis showed that all the six polymorphisms of VEGF were not associated with risk of HNC [OR 1.25, 95 % CI (0.60-1.58) for TT vs. CC for 936 C/T; OR 1.41, 95 % CI (0.79-2.52) for GG vs. AA for -1,154 A/G; OR 0.97, 95 % CI (0.38-2.50) for CC vs. GG for 405 G/C; OR 1.44, 95 % CI (0.80-2.61) for AA vs. CC for 2,578 C/A; OR 1.27, 95 % CI (0.77-3.72) for TT vs. CC for -460 C/T; and OR 0.87, 95 % CI (0.37-2.06) for GG vs. CC for -634 G/C]. When performed subgroup analysis according to ethnicity for VEGF 936 C/T, the results suggested that it was not associated with the risk of HNC for either Asians [OR 0.84, 95 % CI (0.27-2.56) for TT vs. CC] or Caucasians [OR 2.10, 95 % CI (0.82-5.37) for TT vs. CC]. However, due to the limitations of this meta-analysis, more well designed, larger sample size, and adjusted risk factors studies are suggested to further assess the findings.

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