ETS1基因与中国北方汉族人群系统性红斑狼疮的相关性研究

目的 验证ETS1基因在北方汉族人群系统性红斑狼疮(systemic lupus erythematosus,SLE)发生中的作用.方法 应用病例-对照关联研究,在山东汉族人群中收集231例SLE患者和474名正常对照,采用Taqman探针对ETS1基因3’非翻译区区域单核苷酸多态位点rs1128334与rs4937333进行基因分型,并对数据进行统计学计算和单倍型分析.结果 rs1128334等位基因A在病例组中的频率显著高于对照组(42.8％ vs.29.1％,OR=1.824,95％CI:1.445～2.302,P＜0.01),rs4937333等位基因T在病例组中的频率显著高于对照组,差异具有统计学意义(47.6％ vs.38.1％,OR=1.478,95％CI:1.181～1.851,P＜0.01).两位点的单倍型分析显示单倍型A-T与SLE的发病风险显著相关(P＜0.05,OR=0.738,95％CI:0.564～0.964),而单倍型G-C可以显著降低SLE的发病风险(P＜0.01,OR=0.296,95％CI:0.232～0.378).结论 ETS1基因rs1128334和rs4937333位点与北方汉族人群系统性红斑狼疮相关.     

染色体12q24.31单核苷酸多态性与冠状动脉粥样硬化性心脏病遗传易感性的关联研究

目的 探讨中国西南地区汉族人群染色体12q24.31 rs2259816基因多态性与冠状动脉粥样硬化性心脏病(简称冠心病)的相关性.方法 收集592例经冠状动脉造影确诊的冠心病患者及同期冠状动脉造影阴性、排除冠心病诊断的463名正常对照,采用聚合酶链反应-限制性片段长度多态性(PCR-restriction fragment length polymorphism,PCR-RFLP)技术分析染色体12q24.31 rs2259816单核苷酸多态性,比较两组间rs2259816位点等位基因和基因型频率分布差异.结果 冠心病组与对照组中均检出AA、AC、CC基因型.rs2259816等位基因A在冠心病组的频率为49.5%,高于对照组的频率43.8%,两组差异有统计学意义(OR=1.129,95%CI:1.029～1.239,P=0.010).结论 中国西南地区汉族人群染色体12q24.31 rs2259816基因多态性与冠心病发生风险密切相关.     

云南地区汉族人群PSMB8、PSMB9及TAP2基因多态性与类风湿关节炎的关联研究

目的 研究云南汉族人群中PSMB8、PSMB9及TAP2基因多态性与类风湿关节炎(rheumatoid arthritis,RA)的相关性.方法 应用聚合酶链反应-限制性片段长度多态性法对177例RA患者及288名健康对照PSMB8基因的rs2071543、rs55745125、rs138635403位点和PSMB9基因的rs17587多态性位点进行基因分型,应用多聚酶链反应扩增阻碍系统法对TAP2基因的rs2228396多态性位点进行基因分型.计算基因型及等位基因频率.采用Epi Info 7软件计算上述多态位点在RA组及正常对照组之间的比值比(OR值).结果 rs138635403及rs17587位点的等位基因及基因型频率在RA组和对照组间差异有统计学意义(P＜0.05),其中RA组rs17587的GG基因型频率(0.672)高于对照组(0.524)(OR=1.862,95％CI:1.261～2.749).结论 云南汉族人群PSMB9基因的rs17587位点多态性与RA存在关联.     

中国九江汉族人群TLR2基因单核苷酸多态性与Graves病易感关系

目的:研究九江汉族人群TLR2基因多态性与Graves病的易感关系。方法:本研究采用特异性引物PCR方法,基于病例-对照研究的实验设计,对333例甲亢病例和368例正常对照的TLR2基因上的rs3804100和rs5743705位点进行了基因分型。结果:患者男女比例约为1∶2.6,女性有更高的患病风险;所有位点均符合哈迪-温伯格平衡。没有在总体病例、对照之间观察到多态位点基因型和等位基因频率的显著差异。然而,在对发病年龄和性别进行分层分析后发现,在GD早发病人中(≤40岁),SNP位点rs3804100的A/A基因型(P=0.013,OR=1.53,95%CI=1.11-2.12)以及A等位基因频率(P=0.020;OR=1.37;95%CI=1.05-1.79)显著高于正常对照组。结论:TLR2基因rs3804100位点的A/A基因型可能会显著增加人群40岁以前患GD的风险。     

Parkin基因启动子区-258T/G多态性与广西地区散发性帕金森病的相关性分析

目的 探讨广西地区parkin基因启动子区-258T/G多态性与散发性帕金森病(sporadicParkinson's disease,SPD)的相关性及该多态性与PD发病年龄的关系.方法 PCR-RFLP及DNA测序等技术,分析parkin基因-258T/G多态性在PD患者和健康对照者间分布频率的差异.结果 PD组parkin基因-258T/G多态性位点G等位基因频率显著高于正常对照组(55.20%:43.33%,x2=6.898,P<0.05,OR=1.61,95%CI:1.13～2.30);GG基因型频率显著高于对照组(28.00%:18.33%,x2=7.159,P<0.05,OR=2.75,95%CI:1.31-5.77).同时,TG+GG基因型频率亦显著高于对照组(82.40%:68.33%,x2=6.551,P<0.05,OR=2.17,95%CI:1.20～3.93).50岁及50岁以上发病患者G等位基因频率和GG基因型频率显著高于对照组,50岁以下发病患者各频率虽高于正常对照组但差异无统计学意义.结论 Parkin基因核心启动子区-258T/G多态G等位基因可能增加了广西地区PD发病风险,且与PD发病年龄成正相关.     

人类端粒酶逆转录酶rs2736100位点基因多态性与冠心病的相关性研究

目的通过病例对照研究,探讨人类端粒酶逆转录酶rs2736100位点基因多态性与冠心病的相关性。方法比较实验组和对照组间rs2736100位点等位基因频率,通过Logistic回归分析rs2736100位点基因多态性与冠心病的相关性。结果实验组与对照组间等位基因频率存在显著性差异(χ~2=7.235,P=0.0270.05),Logistic回归结果显示rs2736100位点基因多态性与冠心病间的OR值达到1.695。结论 5p15.33区域rs2736100位点的多态性变化可能是冠心病发生的一个新的独立危险因素。     

CAT、CYBA及NIK基因与慢性阻塞性肺疾病及相关肺动脉高压易感性的关系

目的:探讨细胞色素b-245α多肽(CYBA)、过氧化氢酶(CAT)及核因子κB诱导激酶(NIK)基因单核苷酸多态性与宁夏地区汉族慢性阻塞性肺疾病(COPD)及相关肺动脉高压(PH)发病易感性的关系。方法:取稳定期COPD患者250例(包括COPD相关PH组103例和COPD非PH组147例)及同期健康对照组127例全血,用飞行质谱法检测CYBA基因rs1049255和rs9932581、CAT基因rs1001179和rs7943316及NIK基因rs7222094位点的基因型及等位基因频率。结论:(1)rs1001179位点基因型及等位基因频率分布在健康组和COPD组间差异有统计学显著性(P0. 05):与C等位基因相比,携带T等位基因的优势比(OR)=0. 21,95%置信区间(CI)为0. 10~0. 48。(2)rs1049255位点基因型与等位基因频率在COPD相关PH及COPD非PH组间差异有统计学显著性(P0. 05):与GG基因型相比,携带AA基因型的OR=2. 50,95%CI为1. 15~5. 46;与G等位基因相比,携带A等位基因的OR=1. 45,95%CI为1. 00~2. 08。(3)rs7222094位点等位基因频率在COPD相关PH及COPD非PH组间差异有统计学显著性(P0. 05):与C等位基因相比,携带T等位基因的OR=0. 31,95%CI为0. 21~4. 96。结论:CAT基因rs1001179位点T等位基因可能是COPD的保护因子,可降低COPD的发病风险。CYBA基因rs1049255位点GG基因型和G等位基因及NIK基因rs7222094位点T等位基因可能是COPD相关PH的保护因子,可降低COPD相关PH的发病风险。     

VEGF基因单核苷酸多态性与中国北方汉族人SLE易感性的相关性研究

目的:研究血管内皮生长因子(VEGF)基因单核苷酸多态性(SNP)与中国北方汉族人系统性红斑狼疮(SLE)易感性的相关性。方法:应用Sequenom飞行时间质谱技术检测44例SLE患者和100例正常对照者外周血VEGF基因的SNPs,选择6个VEGF基因的SNP位点:rs2010963、rs3024994、rs3025000、rs3025010、rs3025035和rs833070进行基因分型,用SPSS 11.5软件对数据资料进行统计分析。结果:SLE患者VEGF多态性位点rs2010963、rs3024994、rs3025000、rs3025010、rs3025035的基因型频率及等位基因频率与正常对照组比较差异无统计学意义(P0.05);VEGFrs833070 A等位基因频率明显高于对照组(31.2%vs20%,χ2=4.547,P=0.033,OR=1.818,95%CI 1.045-3.162)。rs833070 G等位基因在SLE组中关节炎与无关节炎组中频率有显著差异(56%vs80.4%,χ2=5.613,P=0.018,OR=0.336,95%CI 0.134-0.843),rs833070 GG基因型频率明显低于无关节炎组(GGvsAG+AA:28%vs65.2%,χ2=6.684,P=0.010,OR=0.207,95%CI 0.061-0.705),而VEGF rs833070位点基因型、等位基因型的频率与患者血清中ds-DNA抗体、抗Sm抗体、狼疮性肾炎、间质性肺疾病的发生无相关性(P0.05)。结论:VEGF基因SNP点rs833070与北方汉族人SLE发病易感性相关,rs833070位点A等位基因可能增加了SLE患病的易感性,而rs833070 GG基因型及G等位基因型可能是SLE合伴关节炎的保护性基因。     

PD-1基因遗传变异与上皮性卵巢癌发病风险的关联

目的探讨细胞程序性死亡受体-1(PD-1)基因遗传变异与上皮性卵巢癌发病风险的关系。方法用聚合酶连接酶检测反应技术(PCR-LDR)检测分析620例上皮性卵巢癌患者和620名对照妇女PD-1.1 A/G和PD-1.5 C/T两个单核苷酸多态位点的基因型和等位基因频率。结果 PD-1.1 A/G多态的AA、AG、GG 3种基因型频率在病例组和对照组中具有显著差异(P0.05)。比较AA基因型携带者,AG和GG基因型携带者显著降低上皮性卵巢癌的发病风险(OR=0.71,95%CI=0.54~0.94和OR=0.68,95%CI=0.50~0.94)。病例组中G等位基因频率明显低于对照组(P0.05)。与A等位基因相比,G等位基因显著降低妇女上皮性卵巢癌的发病风险(OR=0.83,95%CI=0.71~0.97)。PD-1.5 C/T多态C和T等位基因频率在2组间具有统计学意义,病例组中T等位基因频率明显低于对照组(P0.05)。与C等位基因相比,T等位基因显著降低妇女上皮性卵巢癌的发病风险(OR=0.82,95%CI=0.69~0.98)。结论 PD-1.1 A/G和PD-1.5 C/T两个单核苷酸多态位点可能是中国北方妇女上皮性卵巢癌发病风险的分子标志物。     

ABCG2 基因rs3114018单核苷酸多态性与武陵山地区痛风及高尿酸血症的相关性研究

目的：探讨三磷酸腺苷结合盒转运蛋白 G2 基因(ABCG2) rs3114018位点与武陵山地区原发性痛风和高尿酸血症的相关性。方法：采用Hi-SNP结合多重PCR技术和高通量测序技术,对159例原发性痛风患者、188例高尿酸血症患者和106例健康对照者的ABCG2 rs3114018位点进行基因分型,并分析不同等位基因或基因型与原发性痛风、高尿酸血症易感性的关系。结果：痛风组基因型频率与正常组相比差异具有统计学显著统计学意义（P<0.001),Logistic回归分析显示,基因型CC和C等位基因均是痛风的易感因素(OR=5.861,95%CI:2.239~15.340,P<0.001;OR=2.461,95%CI:1.671~3.622,P<0.001）;高尿酸血症组基因型频率与正常组相比没有显著差异（P>0.05),该位点多态与高尿酸血症没有相关性（P>0.05）;痛风组与高尿酸血症组相比,基因型频率具有统计学差异（P<0.001),基因型CC和C等位基因分别使痛风的发生风险增加了4.131倍和1.994倍。结论：ABCG2 rs3114018位点单核苷酸多态性可能与武陵山地区原发性痛风的发病相关,等位基因C可能是原发性痛风发病的危险因素,携带CC基因型的个体可能更容易患痛风;该位点多态性与高尿酸血症没有显著相关性。     

Association between lipoprotein-associated phospholipase A2 gene polymorphism and coronary artery disease in the Chinese Han population

The role of the lipoprotein-associated phospholipase A(2) gene (PLA2G7) in atherosclerosis remains controversial. We investigated the frequency of single-nucleotide polymorphisms (SNPs) of PLA2G7 (rs16874954 and rs1051931) and their association with coronary artery disease (CAD) in a cohort of CAD patients (n= 806) and age-matched healthy controls (n= 482) in the Chinese Han population. The VF and FF genotype of rs16874954 was significantly more frequent in the CAD patients (13.5%) than in the controls (9.3%, P= 0.024). The association remained after adjustment for age, gender, body mass index, smoking status, history of diabetes, positive family history of CAD, high-density lipoprotein cholesterol, and triglyceride (OR = 1.922; 95% CI [1.146-3.224]; P= 0.013). There was no significant difference in the frequency of any genotype of rs1051931 between the two groups. However, the frequency of the allele V379 was significantly greater in CAD patients with a history of myocardial infarction (MI) than in those without a history of MI (18.7% and 14.8%, P= 0.038). We conclude that there is significant association between the rs16874954 mutation and CAD in the Chinese Han population. The expression of rs1051931 variant in CAD patients may entail increased risk of MI.     

Association analysis of BANK1 gene with psoriasis in Southern Han Chinese

Psoriasis is a chronic inflammatory skin disease with an immunogenetic background. This study aimed to determine the association between three functional SNPs of BANK1 (rs10516487, rs17266594 and rs3733197) with psoriasis in Southern Han Chinese population by determining their frequency in 242 patients with psoriasis and 317 healthy individuals. The genotype frequencies of the detected polymorphisms were analysed in relation to the susceptibility of psoriasis. Our data show that there is no significant difference in genotype distribution for the three BANK1 SNPs between patients and healthy controls. The AA frequency of rs3733197 is significantly higher in patients with psoriasis onset before the age of 23 than in those with late disease onset (P = 0.0069). In addition, analysis on BANK1 haplotype also suggests a protective role for TGC and CAT haplotype from psoriasis (OR 0.55, 95% CI: 0.34-0.89; P = 0.0144; OR 0.62, 95% CI: 0.42-0.92; P = 0.0175), whereas CGT haplotype is associated with increased risk of the disease (OR 1.38, 95% CI: 1.05-1.81, P = 0.0203). Overall, our result indicates that polymorphism in BANK1 is associated with susceptibility to psoriasis in Southern Han Chinese.     

SH2B3基因标签单核苷酸多态性与汉族原发性高血压的关系

目的探讨SH2B衔接蛋白3(SH2B3)基因标签单核苷酸多态(SNPs)与汉族原发性高血压(EH)的关系。方法用聚合酶链式反应-限制性片段长度多态性方法(PCR-RFLP),对1 020例汉族人(EH患者和对照者各510例)SH2B3基因6个标签SNPs(rs7309325、rs11065898、rs10849947、rs2239196、rs2238154和rs739496)的多态性进行检测,运用遗传模型分析该基因与汉族EH的相关性。结果 rs2239196位点基因型和等位基因在EH组和对照组间的频率分布均具有显著性差异(Bonfferoni校正P0.05),Logistic回归分析结果显示T等位基因携带者的患病风险显著升高(OR=2.59,95%CI 1.36~4.96,Bonfferoni校正P0.05)。结论 SH2B3基因rs2239196位点T等位基因可能是汉族EH发生的危险因子。     

The association of TAP polymorphisms with non-small-cell lung cancer in the Han Chinese population

The host immune system plays a crucial role in multiple types of cancer, including non-small-cell lung cancer (NSCLC). Transporter associated with antigen processing (TAP) protein heterodimer complexes might promote intracellular antigen peptide binding with class I major histocompatibility complex (MHC-I) molecules, and in recent years, TAP1 and TAP2 have been reported to be associated with multiple cancer risks. In the current study, we investigated the association of single-nucleotide polymorphisms (SNPs) in TAP1 and TAP2 with NSCLC in a Han Chinese population. Six and seven TAP1 and TAP2 SNPs, respectively, were genotyped and analysed in healthy controls and NSCLC patients. Based on our data, none of the six SNPs in TAP1 is associated with NSCLC risk (P > 0.0038). However, rs2228396 alleles in TAP2 were significantly different between NSCLC patients and healthy controls, and the A allele might be associated with an increased risk of this cancer (P = 0.001, OR = 1.65, 95%CI: 1.23 ∼ 2.21). Moreover, the genotype frequencies of rs2228396 were significantly different between patients and healthy controls (P = 7 × 10⁻⁴). Additionally, TAP2 rs241441 alleles exhibited a trend of difference between NSCLC patients and healthy controls, with the C allele possibly being associated with increased risk of NSCLC (P = 0.013; OR = 1.30, 95%CI: 1.06 ∼ 1.60). Moreover, the genotypes of rs241441 in TAP2 showed a significant difference between NSCLC patients and healthy controls (P = 1 × 10⁻⁴). In haplotype analysis, the TAP2 SNP haplotype (CAC, TAP2*0102) was significantly associated with increased NSCLC risk in the Han Chinese population (P = 0.003; OR = 1.57, 95%CI: 1.17 ∼ 2.10). Our results indicate that TAP2 SNPs (rs2228396 and rs241441) have a potential role in NSCLC pathogenesis.     

Association of single nucleotide polymorphisms of LEPR gene with essential hypertension among ethnic Mongolian and Han Chinese from Inner Mongolia regionCSCD

Objective: To assess the association of single nucleotide polymorphisms (SNPs) of leptin receptor (LEPR) gene with essential hypertension (EH) and body mass index (BMI) among ethnic Mongolian and Han Chinese from Inner Mongolia region. Methods: In total 411 Han Chinese patients with EH and 480 healthy controls, together with 658 Mongolian patients with EH and 403 healthy controls, were collected. The SNPs of the LEPR gene were determined with ligase detection reaction (LDR). Logistic regression was used to analyze the association of the polymorphisms of each locus with EH and BMI. MDR software was used to analyze the interaction between above loci and environmental factors. Results: Genotypic frequencies of LEPR gene rs7555955, rsll37100 and rsll37101 loci had differed significantly among ethnic Hans with EH and the control group (All P <0. 05). While those of rs7555955, rsl805094, rsll37100, rsll579567, rsl805134 and rs6669354 loci had differed significantly among ethnic Mongolians with EH and the control group (All P<0. 05). After adjustment for confounders, logistic regression analysis indicated that age(Oi=2. 97, 95%CJ: 1. 94-3. 99), BMI (Ofl = 3. 93, 95%CI:2. 91-5. 96), and rsll37101 (AA) (Oi=3. 96, 95%CI-.l. 32-11. 90) were independent risk factors for EH among ethnic Hans, while age (Oi=2. 99, 95%C7:2. 98-4. 57), BMI (Oi = 3. 03, 95%CI-. 1. 05-1. 27), rs7555955 (AG, AA) (OR = 12.12, 95%CI:2.80-52.43) OP = 6.35, 95%CI: 1. 44-27. 94), and rs7555955 (GG) were independent risk factors for EH among ethnic Mongolians (P <0. 05). Conclusion: Age and BMI are independent risk factors for EH in both ethnic Han and Mongolian Chinese. rsll37101 locus is associated with EH among ethnic Hans, while rs7555955 locus is associated with EH among ethnic Mongolians. © 2018 MeDitorial Ltd. All rights reserved.     

Association study of polymorphisms in miRNAs with T2DM in Chinese population

Accumulated evidence indicates that microRNA (miRNA or miR) is involved in the development of type 2 diabetes (T2DM). Several studies have shown that single nucleotide polymorphisms (SNPs) located in miRNAs are associated with T2DM in Caucasian populations. The association studies of miRNA''s SNPs with T2DM in Asian are rarely reported, and there are distinct genetic differences between Caucasian and Asian populations. The focus of this study, therefore, is the association of T2DM with five SNPs (rs895819 in miR-27a, rs531564 in miR-124a, rs11888095 in miR-128a, rs3820455 in miR-194a and rs2910164 in miR-146a) located in five miRNAs in a Han Chinese population. A total of 738 subjects with T2DM and 610 non-diabetic subjects were genotyped using the TaqMan method. Next, the associations between the five SNPs with T2DM and individual metabolic traits were evaluated. Our data showed that the C allele of rs531564 in miR-124a may protect against T2DM (P=0.009, OR=0.758; 95%CI: 0.616-0.933). Conversely, the C allele of rs2910164 in miR-146a may increase the risk of developing T2DM (P<0.001, OR=1.459; 95%CI: 1.244-1.712). However, these five SNPs did not exhibit significant associations with individual metabolic traits in either the T2DM or non-diabetic groups. Our results revealed that genetic variations in miRNAs were associated with T2DM susceptibility in a Han Chinese population, and these results highlight the need to study the functional effects of these variants in miRNAs on the risk of developing T2DM.     

OX40基因rs2298212位点与汉族人群冠状动脉粥样硬化疾病的关联研究

目的 探讨OX40基因(TNFRSF4)rs2298212G/A位点与山东汉族人群冠状动脉粥样硬化疾病的相关性.方法 在山东大学齐鲁医院心内科和健康体检中心分别收集到冠状动脉粥样硬化疾病患者536例和正常对照544名,采用聚合酶链反应-限制性片段长度多态性方法 对OX40基因rs2298212G/A多态性位点进行基因分型,并对数据进行统计分析.结果 基因型与等位基因频率分布在病例组与对照组之间差异均无统计学意义(P＞0.05).在回归校正了年龄、性别、体重指数、收缩压、舒张压、血糖、总胆固醇及甘油三酯等因素的影响后,基因型频率分布差异仍无统计学意义(P＞0.05).在对冠状动脉受累支数进行的分层分析发现,受累1支与受累3支之间,基因型与等位基因频率分布差异均有统计学意义(P＜0.05).结论 OX40基因rs2298212G/A多态位点同山东汉族人群冠状动脉粥样硬化疾病之间无关联性存在,但该位点可能与冠状动脉粥样硬化的严重程度相关.     

RTKN2、LDLR、APOB和APOC1基因多态性与类风湿性关节炎的相关性

目的：建立RTKN2基因rs3125734 C＞T、LDLR基因rs688 C＞T、APOB基因rs693 C＞T和APOC1基因rs4420638 A＞G四个SNP位点的PCR-HRM分子诊断方法,并研究其与兰州地区汉族人群类风湿关节炎易感的相关性。方法：通过设计引物和PCR-HRM检测体系优化,建立四个SNP位点的基因分型方法。检测588例RA患者和200例健康对照者标本,通过病例对照研究分析其RA易感性。结果：经测序验证所建PCR-HRM检测方法的正确性。结果显示,rs3125734和rs688位点的基因型和等位基因频率在RA组和对照组间存在统计学差异（P分别为0.046和0.016、0.014和0.02）,rs3125734杂合突变型CT在RA组与对照组间差异有统计学意义（χ2=4.013,P=0.045,OR=1.613,95% CI:1.010-2.576）,rs688纯合突变型TT在两组间有显著差异（χ2=6.853,P=0.009,OR=0.273,95% CI:0.103-0.721）。rs693和rs4420638位点基因型和等位基因频率在RA组和对照组间差异无统计学意义（P＞0.05）。经RF和anti-CCP将RA组分层后,rs4420638位点基因型和等位基因频率在RF(-)RA组与对照组间有统计学差异（χ2=4.710,P=0.030;χ2=4.110,P=0.043）,其杂合突变型AG在两组间存在显著差异（χ2=4.046,P=0.044,OR=1.799,95%CI：1.015-3.186）;rs693在各组间无显著差异（P＞0.05）。构建rs688和rs4420638单倍型,单倍型CA和TA在RA组和对照组间有显著差异(P=0.020,OR=1.408,95%CI：1.054-1.881;P=5.73×10-5,OR=0.443,95%CI：0.295-0.664)。 结论：建立的rs3125734、rs688、rs693和rs4420638位点PCR-HRM分子诊断方法可用于常规化检测。rs3125734、rs688和rs4420638位点是兰州地区汉族人群的RA易感基因,rs3125734位点CT基因型和rs4420638位点AG基因型是RA发病的危险因素,而rs688位点TT基因型是RA的保护性因素。rs688和rs4420638的单倍型CA可显著增加RA的发病风险,TA可降低RA的发病风险。     

Association between TSHR gene polymorphism and the risk of Graves' disease: a meta-analysis

Thyroid stimulating hormone receptor (TSHR) is thought to be a significant candidate for genetic susceptibility to Graves' 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 searched all relevant case-control studies in PubMed, Web of Science, CNKI and Wanfang for literature available until May 2015, and chose studies on two single nucleotide polymorphisms (SNPs): rs179247 and rs12101255, within TSHR intron-1. Bias of heterogeneity test among studies was determined by the fixed or random effect pooled measure, and publication bias was examined by modified Begg's and Egger's test. Eight eligible studies with 15 outcomes were involved in this meta-analysis, including 6,976 GD cases and 7,089 controls from China, Japan, Poland, UK and Brazil. Pooled odds ratios (ORs) for allelic comparisons showed that both TSHR rs179247A/G and rs12101255T/C polymorphism had significant association with GD (OR=1.422, 95%CI=1.353–1.495, P<0.001, P heterogeneity=0.448; OR=1.502, 95%CI: 1.410–1.600, P<0.001, P heterogeneity=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 those in Asian, European and South America subgroups (P<0.001). Our meta-analysis revealed a significant association between 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 our findings.