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Association of TNF-? promoter polymorphism and Graves' disease: an updated systematic review and meta-analysis.

ABSTRACT: Graves' disease (GD) is a common autoimmune disorder with a genetic predisposition. Owing to the biological effect of tumor necrosis factor-? (TNF-?) on the thyroid gland and its gene location, TNF-? should be able to influence an individual's susceptibility to GD. In the present study, we conduct a meta-analysis of rs1800629 and rs361525 in TNF-? gene from all eligible case-control studies to assess the associations amongst reported TNF-? gene with GD. A total of ten case-control studies involving 2790 GD patients and 3472 healthy controls were included. The results showed that a significant association was characterized between the rs1800629 polymorphism and GD in the homozygous model (AA compared with GG: odds ratio (OR) = 1.97, 95% confidence interval (CI) = 1.27-3.06, P=0.002) and recessive model (AA compared with GA + GG: OR = 1.62, 95% CI = 1.04-2.50, P=0.03). GD susceptibility was significantly detected in European population in all genetic models after ethnicity stratification. In sharp contrast, no significant association could be detected in Asian population. Next, we conducted a meta-analysis for another promoter SNP rs361525. However, SNP rs361525 did not show a significant association with GD in any genetic model before and after ethnicity stratification. Together, our data support that only the promoter single-nucleotide polymorphism (SNP) rs1800629 within the TNF-? gene is associated with increased risk for developing GD, especially in European population. Future large-scale studies are required to validate the associations between TNF-? gene and GD.

SUBMITTER: Tu Y

PROVIDER: S-EPMC5861325 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature

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Association of TNF-α promoter polymorphism and Graves' disease: an updated systematic review and meta-analysis.

Tu Yaqin Y Fan Guorun G Zeng Tianshu T Cai Xiong X Kong Wen W

Bioscience reports 20180321 2

Graves' disease (GD) is a common autoimmune disorder with a genetic predisposition. Owing to the biological effect of tumor necrosis factor-α (TNF-α) on the thyroid gland and its gene location, TNF-α should be able to influence an individual's susceptibility to GD. In the present study, we conduct a meta-analysis of rs1800629 and rs361525 in TNF-α gene from all eligible case-control studies to assess the associations amongst reported TNF-α gene with GD. A total of ten case-control ...[more]

PMID: 29440561

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Project description:Background and objectiveThe association between TNF-α -308 G/A polymorphism and COPD remains controversial due to insufficiently strict study designs and small group sizes among different studies. In the present study, a meta-analysis update which followed a stricter procedure was performed to obtain a clearer understanding of this association.MethodsA comprehensive database search was conducted to identify the case-control studies published up to July 2015 which reported an association between the TNF-α -308 G/A polymorphism and COPD risk. Data were extracted to calculate pooled odds ratios with 95% confidence intervals under the most appropriate genetic and allelic models. Sensitivity was analyzed, and heterogeneity as well as publication bias was assessed.ResultsThirty-eight eligible studies, comprising 3,951 COPD cases and 5,110 controls, were included in this study, among which 22 studies comprising 2,067 COPD cases and 2,167 controls were performed in Asians, and 16 studies comprising 1,884 COPD cases and 2,943 controls were in non-Asians. The overall result showed that TNF-α -308 G/A polymorphisms were significantly associated with increased COPD risk in both the codominant genetic and allelic models. Individuals with the GA or AA genotype were more susceptible to COPD development than those with the GG genotype. In addition, individuals with the AA genotype were more susceptible to developing COPD than those with the GA genotype. The subgroup analysis stratified by ethnicity supported the results in Asians but not in non-Asians. However, no association was found between TNF-α -308 G/A polymorphisms and COPD susceptibility either in Asians or in non-Asians in the meta-analysis conducted with restriction to former/current smokers.ConclusionThe present meta-analysis suggested that the TNF-α -308 G/A polymorphism was associated with an increased risk of COPD among Asians but not in non-Asians. Furthermore, individuals with the AA genotype of TNF-α -308 were more susceptible to developing COPD.

Dataset Information

Association of TNF-? promoter polymorphism and Graves' disease: an updated systematic review and meta-analysis.

Publications

Association of <i>TNF-α</i> promoter polymorphism and Graves' disease: an updated systematic review and meta-analysis.

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