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ABSTRACT: The vascular endothelial growth factor (VEGF) is an endothelial cell-specific mitogen involved in the process of angiogenesis, a crucial phase in tumor growth and metastasis. We carried out a case-control study to evaluate whether VEGF -2578C/A gene polymorphism modulates the risk of developing colon cancer. A total of 110 colon cancer patients and 110 cancer-free healthy people were recruited in the Chinese population. Genomic DNA was isolated from peripheral blood, and gene polymorphisms were analyzed by polymerase chain reaction-restriction fragment length polymorphism. Colon cancer patients had a significantly higher frequency of VEGF -2578AA genotype (odds ratio=2.49; 95% confidence interval=1.04, 6.01; p=0.04) than controls. Patients with left colon cancer had a significantly higher frequency of VEGF -2578AA genotype (odds ratio=2.31; 95% confidence interval=1.03, 5.18; p=0.04) than those with right colon cancer. When stratified by tumor size, growth pattern, differentiation, and stage of colon cancer, no statistically significant results were observed. This study suggested that VEGF -2578AA genotype was associated with a higher risk of colon cancer in Chinese population. Further studies are needed to understand the mechanism of VEGF gene polymorphisms in the development and progression of colon cancer.
Genetic Testing and Molecular Biomarkers 11/2010; 15(3):117-21. DOI:10.1089/gtmb.2010.0166 · 1.15 Impact Factor