Exploring the association of IL-10 polymorphisms in Behcet's disease: a systematic review and meta-analysis.

Background: Polymorphisms in the interleukin-10 (IL-10) gene have been studied in various ethnic groups for possible association with Behçet's disease (BD). This study aimed to perform a meta-analysis of eligible studies to calculate the association of IL-10 polymorphisms with BD.A systematic literature search was carried out in PubMed, Embase, Web of Science, and Scopus databases to identify relevant publications, and extracted the respective results. Pooled odds ratio (OR) with 95% confidence interval (CI) was used to evaluate the power of association with a random-effects model.
Results: A total of 19 articles, consisting of 10,626 patients and 13,592 controls were included in the meta-analysis. The meta-analysis revealed significant associations in allelic and genotypic test models of - 819 (C vs. T: OR = 0.691, P  < 0.001; CC vs. TT: OR = 0.466, P  < 0.001; CC + CT vs. TT: OR = 0.692, P  < 0.001; and CC vs. CT + TT: OR = 0.557, P  < 0.001), - 592 (C vs. A: OR = 0.779, P  = 0.002; CC + AA vs. AA: OR = 0.713, P  = 0.021; and CA vs. AA: OR = 0.716, P  = 0.016), rs1518111 (G vs. A: OR = 0.738, P  < 0.001; GG vs. AA: OR = 0.570, P  < 0.001; GG + AG vs. AA: OR = 0.697, P  < 0.001; GG vs. GA + AA: OR = 0.701, P  < 0.001; and AG vs. GG: OR = 0.786, P  = 0.004) and rs1554286 (C vs. T: OR = 0.582, P  < 0.001; CC vs. TT: OR = 0.508, P  < 0.001; CC + CT vs. TT: OR = 0.605, P  < 0.001; CC vs. CT + TT: OR = 0.665, P  = 0.012; and CT vs. TT: OR = 0.646, P  = 0.001). However, we failed to find any association between - 1082 polymorphism and susceptibility of BD.
Conclusion: This meta-analysis demonstrated that the interleukin-10 -819, - 596, rs1518111 and rs1554286 polymorphisms could be responsible against BD susceptibility, and should probably be regarded as a protective factor for Behçet's disease.
Competing Interests: Competing interestsThe authors declare that they have no competing interests.
(© The Author(s). 2019.)