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Title: Association Between TNF-α -308G/A Polymorphism and Risk of Immune Thrombocytopenia: A Meta-Analysis. Author: Zhang J, Min QH, Xu YM, Deng LB, Yang WM, Wang Y, Li SQ, Li J, Lin J, Liu J, Huang B, Sun F, Gao QF, Wen X, Wang XZ. Journal: Genet Test Mol Biomarkers; 2017 Feb; 21(2):80-85. PubMed ID: 27960071. Abstract: OBJECTIVE: Previous studies have investigated the association between tumor necrosis factor-alpha (TNF-α) -308G/A polymorphism and risk of immune thrombocytopenia (ITP), but the reported results have been inconsistent. Thus, a systematic meta-analysis was performed to resolve this discrepancy. METHODS: Electronic databases and the cited references of the obtained published articles were manually searched. Quality assessment of each study was conducted using the Newcastle-Ottawa Scale (NOS). All case-control studies were used to assess the strength of the association. Statistical analysis was performed using Stata version 12.0. RESULTS: Eight high-quality studies, including 947 patients and 1911 controls, were selected for the final meta-analysis. There was no significant association between TNF-α -308G/A polymorphism and ITP in overall and Asian populations. However, a significant positive association was observed between them in the dominant genetic model (AA+AG versus GG) in the Caucasian population (OR = 1.35, 95% confidence interval [CI]: 1.07-1.71, PH = 0.173). CONCLUSIONS: Our finding suggested that TNF-α -308G/A might be involved in development of ITP in the Caucasian population, but not in the Asian population. Among Caucasians the A allele (AA+AG) was associated with ITP. However, larger-scale studies are required to confirm our findings.[Abstract] [Full Text] [Related] [New Search]