摘要目的 探讨中国江苏徐州地区汉族人群促甲状腺素受体(TSHR)基因内含子1 上单核苷酸多态性位点(SNP)rs179247和rs12101261与Graves病的关系.方法应用TaqMan探针技术,在Fluidigm EP1平台上对1 066例Graves病患者和1 107名健康对照者进行基因分型;同时检测样本血清甲状腺激素和TSH受体抗体(TRAb)水平.结果 rs179247_A、rs12101261_T与Graves病易感性关联(分别为OR=1.35,95%CI 1.19～1.54,P=5.92×10-6;OR=1.32,95%CI 1.16～1.50,P=2.22×10-5);Logistic回归提示rs179247是独立的易感位点.在rs179247_GG、AG、AA 3种基因型之间相比,血清TRAb水平具有统计学差异(P=0.015);其他临床表现其差异均无统计学意义(P＞0.05).结论 TSHR基因内含子1区域rs179247、rs12101261与徐州地区汉族人群Graves病相关联,并且rs179247是一个独立易感位点;该多态性与血清TRAb水平有关,与血清甲状腺激素水平、发病年龄、甲状腺肿大程度、Graves病眼征分级、复发与否无明显关联.

abstractsObjective To investigate the association between polymorphisms of thyroid-stimulating hormone receptor(TSHR)gene intron 1(rs179247, rs12101261)and Graves′ disease(GD)in the China Han population from Xuzhou city, Jiangsu Province. Methods Total 1 066 GD patients and 1 107 control subjects were recruited for genotyping by Taqman probe technique on Fluidigm EP1 platform. Meanwhile, serum concentrations of thyroid hormone and TSH receptor antibodies(TRAb)were determined. Results The rs179247_A, rs12101261_T were significantly associated with GD risk(OR=1.35, 95%CI 1.19-1.54, P=5.92×10-6; OR=1.32, 95%CI 1.16-1.50, P=2.22×10-5). Logistic regression identified that rs179247 was an independent susceptibility locus of GD. Serum TRAb concentration showed a significant difference(P=0.015)among rs179247_AA, AG, and GG genotypes. Conclusion rs179247 and rs12101261 in TSHR intron 1 are both associated with GD, and rs179247 may contribute risk to GD independently. The polymorphism is associated with TRAb, but not with serum concentration of thyroid hormones, age of onset, diffused thyroid goiter, ophthalmic signs, and relapse.