Abstract

Vascular endothelial growth factor gene polymorphisms and psoriasis susceptibility: a meta-analysis

The aim of this study was to explore whether vascular endothelial growth factor (VEGF) polymorphisms confer susceptibil­ity to psoriasis. Meta-analyses were conducted to examine the asso­ciations between the +405 C/G, -460 C/T, -1154 A/G, and -2578 A/C polymorphisms of VEGF and psoriasis using allele contrast and reces­sive, dominant, and additive models. Seven studies on VEGF polymor­phisms and psoriasis involving 1956 subjects (psoriasis patients 665, controls 1291) were included in this meta-analysis. We observed no association between psoriasis and the VEGF +405 C allele in all study subjects (odds ratio = 0.984, 95% confidence interval = 0.754-1.285, P = 0.906), but stratification by ethnicity indicated a significant asso­ciation between the VEGF +405 C allele and psoriasis in Asians (odds ratio = 0.762, 95% confidence interval = 0.628-0.923, P = 0.005). In addition, we observed a significant association between the VEGF -460 C allele and psoriasis in Europeans (odds ratio = 0.807, 95% confidence interval = 0.672-0.968, P = 0.021). Meta-analyses of the -1154 A/G polymorphism also revealed a significant association with psoriasis in Europeans. However, the VEGF -2578 A/C polymorphism showed no association in all subjects or in Europeans or Asians. This meta-analy­sis suggests the VEGF +405 C/G polymorphism confers susceptibility to psoriasis in Asians, and that the -460 C/T and -1154 A/G polymor­phisms confer susceptibility to psoriasis in Europeans. The aim of this study was to explore whether vascular endothelial growth factor (VEGF) polymorphisms confer susceptibil­ity to psoriasis. Meta-analyses were conducted to examine the asso­ciations between the +405 C/G, -460 C/T, -1154 A/G, and -2578 A/C polymorphisms of VEGF and psoriasis using allele contrast and reces­sive, dominant, and additive models. Seven studies on VEGF polymor­phisms and psoriasis involving 1956 subjects (psoriasis patients 665, controls 1291) were included in this meta-analysis. We observed no association between psoriasis and the VEGF +405 C allele in all study subjects (odds ratio = 0.984, 95% confidence interval = 0.754-1.285, P = 0.906), but stratification by ethnicity indicated a significant asso­ciation between the VEGF +405 C allele and psoriasis in Asians (odds ratio = 0.762, 95% confidence interval = 0.628-0.923, P = 0.005). In addition, we observed a significant association between the VEGF -460 C allele and psoriasis in Europeans (odds ratio = 0.807, 95% confidence interval = 0.672-0.968, P = 0.021). Meta-analyses of the -1154 A/G polymorphism also revealed a significant association with psoriasis in Europeans. However, the VEGF -2578 A/C polymorphism showed no association in all subjects or in Europeans or Asians. This meta-analy­sis suggests the VEGF +405 C/G polymorphism confers susceptibility to psoriasis in Asians, and that the -460 C/T and -1154 A/G polymor­phisms confer susceptibility to psoriasis in Europeans.

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