VEGFA and gastric cancer: Liu et al. [18] conducted meta-analysis on Asian, European, and American populations respectively, and found that in the overall population, VEGF-634 G> C GG genotype was associated with the reduction of gastric cancer risk, VEGF- 634 G> C- C allele and GG genotype were associated with the risk in Caucasian people, while in the Asian population, VEGF + 1612G/A locus was significantly associated with the risk of GC.