title: The VEGF -634G>C promoter polymorphism is associated with risk of gastric cancer.
abstract: BACKGROUND
  Both TGF-beta1 and VEGF play a critic role in the multiple-step process of tumorgenesis of gastric cancer. Single nucleotide polymorphisms (SNPs) of the TGFB1 and VEGF genes have been associated with risk and progression of many cancers. In this study, we investigated the association between potentially functional SNPs of these two genes and risk of gastric cancer in a US population.
  
  
  METHODS
  The risk associated with genotypes and haplotypes of four TGFB1 SNPs and four VEGF SNPs were determined by multivariate logistic regression analysis in 171 patients with gastric cancer and 353 cancer-free controls frequency-matched by age, sex and ethnicity.
  
  
  RESULTS
  Compared with the VEGF-634GG genotype, the -634CG genotype and the combined -634CG+CC genotypes were associated with a significantly elevated risk of gastric cancer (adjusted OR = 1.88, 95% CI = 1.24-2.86 and adjusted OR = 1.56, 95% CI = 1.07-2.27, respectively). However, none of other TGFB1 and VEGF SNPs was associated with risk of gastric cancer.
  
  
  CONCLUSIONS
  Our data suggested that the VEGF-634G>C SNP may be a marker for susceptibility to gastric cancer, and this finding needs to be validated in larger studies.
authors.affiliation: Department of Epidemiology, University of Texas M. D. Anderson Cancer Center, Houston, Texas 77030, USA. xguan@mdanderson.org
authors.forename: Xiaoxiang
authors.initials: X
authors.lastname: Guan
authors.forename: Hui
authors.initials: H
authors.lastname: Zhao
authors.forename: Jiangong
authors.initials: J
authors.lastname: Niu
authors.forename: Dongfeng
authors.initials: D
authors.lastname: Tang
authors.forename: Jaffer A
authors.initials: JA
authors.lastname: Ajani
authors.forename: Qingyi
authors.initials: Q
authors.lastname: Wei
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000483:Alleles; D016022:Case-Control Studies; D005260:Female; D020022:Genetic Predisposition to Disease / Q000235:genetics*; D005838:Genotype; D006239:Haplotypes / Q000235:genetics; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide / Q000235:genetics*; D011401:Promoter Regions, Genetic / Q000235:genetics*; D013274:Stomach Neoplasms / Q000235:genetics*; D053773:Transforming Growth Factor beta1 / Q000235:genetics; D042461:Vascular Endothelial Growth Factor A / Q000235:genetics*
chemical_list: C508960:TGFB1 protein, human; D053773:Transforming Growth Factor beta1; D042461:Vascular Endothelial Growth Factor A