Vascular endothelial growth factor gene polymorphisms in thyroid cancer

J Endocrinol. 2007 Nov;195(2):265-70. doi: 10.1677/JOE-07-0395.


Vascular endothelial growth factor (VEGF) is a potent stimulator for angiogenesis. It has been implicated in growth and metastasis of thyroid cancer. Three functional single nucleotide polymorphisms (SNPs) of VEGF (-2578C/A, -634G/C, and +936C/T) are known to be related with VEGF expression. We conducted a case-control study to evaluate the genetic effects of these three functional SNPs on the development of thyroid cancer and lymph node metastasis. A total of 332 cases and 261 controls were recruited for this study. The genotypes were determined by the TaqMan 5'-nuclease assay. Hardy-Weinberg equilibrium (HWE) was tested for each SNP, and genetic effects were evaluated by the chi(2)-test and multiple logistic regression. We used Bonferroni correction to account for multiple testing, and a two-tailed P value <0.017 was considered statistically significant. All three SNPs were in HWE. The A allele of -2578C/A (i.e. SNP rs699947) increased a risk for thyroid cancer (adjusted OR=136, 95% CI=1.02-1.81, P=0.039). Haplotype analysis yielded a less significant result (an empirical P value of 0.07). There was a tendency of increasing the frequency of the risk allele from controls, patients without lymph node metastasis to patients with lymph node metastasis (P(trend)=0.019). Further analysis showed that the genetic effect was only in men (adjusted OR=1.97, 95% CI=1.16-3.37, P=0.013) but not in women (adjusted OR=1.15, 95% CI=0.81-1.62, P=0.435). The other two SNPs did not show significant results. The A allele of the SNP rs699947 increased the risk of thyroid cancer development and regional lymph node metastasis in men.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Aged
  • Aged, 80 and over
  • Alleles
  • Case-Control Studies
  • Child
  • Female
  • Genetic Predisposition to Disease
  • Haplotypes
  • Humans
  • Linkage Disequilibrium
  • Lymphatic Metastasis / genetics*
  • Male
  • Middle Aged
  • Polymorphism, Genetic*
  • Polymorphism, Single Nucleotide
  • Sex Factors
  • Thyroid Neoplasms / genetics*
  • Vascular Endothelial Growth Factor A / genetics*


  • Vascular Endothelial Growth Factor A