VEGFA and systemic lupus erythematosus: In this meta-analysis, we found that VEGF -634G/C gene polymorphism was not associated with SLE risk (C allele: OR = 0.96, 95% CI: 0.81–1.15, P = 0.66; CC genotype: OR = 0.91, 95% CI: 0.65–1.29, P = 0.61; GG genotype: OR = 1.03, 95% CI: 0.80–1.33, P = 0.80; Fig. 4).