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Association of tumour necrosis factor alpha (TNF-alpha) polymorphisms with Graves' disease: A meta-analysis
Ni Li1, Zongguang Zhou, Xuyang Liu
1Department of Ophthalmology, West China Hospital, Sichuan University, Chengdu, China.
Objective:
To quantitatively summarize the association between tumour necrosis factor alpha (TNF-alpha) gene polymorphisms and Graves' disease.
Design And Methods:
Relevant studies were identified from the following electronic databases: Cochrane Library, MEDLINE, EMBASE and Chinese Bio-medicine Database. A meta-analysis of relevant studies was performed.
Results:
This meta-analysis included 10 case-control studies, which included 2271 Graves' disease cases and 2633 controls. The combined results based on all studies showed that there was significant difference in genotype distribution (-308A/G; -308G/G; -863C/C; -863C/A; -1031C/T) between Graves' disease and controls. When stratifying for race, statistically significant results were observed in three genotype distribution (-863C/C; -863C/A; -1031C/T) between Graves' disease and controls among Asians. Statistically significant results were observed in only two genotype distribution (-308A/G; -308G/G) between Graves' disease and controls among Caucasians.
Conclusions:
This meta-analysis suggests that TNF-alpha gene polymorphisms at positions -308 (G-308A), -863 (C-863A), and -1031 (T-1031C) were associated with Graves' disease.
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