Published in:
Open Access
01-03-2014 | Research Article
Vascular endothelial growth factor +936C/T polymorphism and breast cancer risk: a meta-analysis of 13 case–control studies
Authors:
Yulan Yan, Hongjie Liang, Taijie Li, Shihui Guo, Meng Li, Shan Li, Xue Qin
Published in:
Tumor Biology
|
Issue 3/2014
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Abstract
The association between vascular endothelial growth factor (VEGF) +936C/T polymorphism and breast cancer risk has been widely reported, but results were inconsistent. In order to derive a more precise estimation of the relationship, a meta-analysis was performed. Eligible articles were identified through search of databases including PubMed, Embase, and Chinese Biomedical Literature Database (CBM). The association between the VEGF +936C/T polymorphism and breast cancer risk was conducted by odds ratios (ORs) and 95 % confidence intervals (95 % CIs). Finally, a total of 13 studies with 6,879 cases and 7,219 controls were included in our meta-analysis. Overall, a significant association was found between VEGF +936C/T polymorphisms and the risk of breast cancer in overall populations under five models (T vs. C: OR = 0.83, 95 % CI = 0.73–0.94,
P = 0.002; TT vs. CC: OR = 0.74, 95 % CI = 0.61–0.91,
P = 0.004, Fig.
1a; TC vs. CC: OR = 0.83, 95 % CI = 0.71–0.96,
P = 0.014; TT vs. CC/CT: OR = 0.77, 95 % CI = 0.62–0.94,
P = 0.010; TT/TC vs. CC: OR = 0.82, 95 % CI = 0.72–0.95,
P = 0.006). In the subgroup analysis by ethnicity, there were also significant associations found between VEGF +936C/T polymorphism and breast cancer risk in Asians and Caucasians. In conclusion, the results of our meta-analysis suggest that the VEGF +936C/T polymorphism is significantly associated with breast cancer development and the VEGF 936T allele carriers may be associated with decreased breast cancer risk.