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Association between TSHR gene polymorphism and the risk of Graves' disease: a meta-analysis
Authors:Wei Qian  Kuanfeng Xu  Wenting Jia  Ling Lan  Xuqin Zheng  Xueyang Yang  Dai Cui
Affiliation:1.Department of Endocrinology, Jiangsu Province Hospital, The First Affiliated Hospital of Nanjing Medical University,Nanjing , Jiangsu 210029, China2.Department of Endocrinology, Beijing Ji Shui Tan Hospital, The Forth Medical College of Peking University,Beijing 100035, China
Abstract:Thyroid stimulating hormone receptor (TSHR) is thought to be a significant candidate for genetic susceptibility toGraves' disease (GD). However, the association between TSHR gene polymorphism and the risk of GD remains controversial. In this study, we investigated the relationship between the two conditions by meta-analysis. We searchedall relevant case-control studies in PubMed, Web of Science, CNKI and Wanfang for literature available until May2015, and chose studies on two single nucleotide polymorphisms (SNPs): rs179247 and rs12101255, within TSHRintron-1. Bias of heterogeneity test among studies was determined by the fixed or random effect pooled measure, andpublication bias was examined by modified Begg's and Egger's test. Eight eligible studies with 15 outcomes wereinvolved in this meta-analysis, including 6,976 GD cases and 7,089 controls from China, Japan, Poland, UK andBrazil. Pooled odds ratios (ORs) for allelic comparisons showed that both TSHR rs179247A/G and rs12101255T/Cpolymorphism had significant association with GD (OR=1.422, 95%CI=1.353–1.495, P<0.001, Pheterogeneity=0.448;OR=1.502, 95%CI: 1.410–1.600, P<0.001, Pheterogeneity=0.642), and the associations were the same under dominant, recessive and co-dominant models. In subgroup analyses, the conclusions are also consistent with all thosein Asian, European and South America subgroups (P<0.001). Our meta-analysis revealed a significant associationbetween TSHR rs179247A/G and rs12101255T/C polymorphism with GD in five different populations from Asia,Europe and South America. Further studies are needed in other ethnic backgrounds to independently confirm ourfindings.
Keywords:Graves' disease   thyroid stimulating hormone receptor   polymorphism   meta-analysis
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