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Published on: June 21, 2018
Association of FAM167A-BLK rs2736340 Polymorphism with Susceptibility to Autoimmune Diseases: A Meta-Analysis
Yingbo Zhou1, Xiangpei Li1, Guosheng Wang1
1a Department of Rheumatology and Immunology , Anhui Provincial Hospital affiliated with Anhui Medical University , Hefei , Anhui , China.
Objective:
The purpose of this study is to evaluate the correlation between family with sequence similarity 167A-B lymphoid tyrosine kinase (FAM167A-BLK) rs2736340 polymorphism and autoimmune diseases.
Methods:
Databases including PubMed, EMBASE, Chinese National Knowledge Infrastructure (CNKI), Chinese Biomedical Literature database (CBM) and Chinese database, Wan Fang database were used in searching eligible studies from January 1, 1966 to October 2, 2015. The odds ratios (ORs) and their 95% confidence intervals (CIs) were pooled to estimate the strength of the association.
Results:
A total of 25 studies with 30,217 patients and 44,754 controls were included in the meta-analysis. The overall results showed FAM167A-BLK rs2736340 T allele was a risk allele for autoimmune diseases (OR 1.36, 95% CI 1.28-1.44, p < 0.001). In the subgroup by ethnicities, the results suggested T allele was an increased risk in North America, Europe, and Asia (OR 1.33, 95% CI 1.10-1.60, p = 0.004; OR 1.26, 95% CI 1.22-1.31, p < 0.001; and OR 1.46, 95% CI 1.40-1563, p < 0.001, respectively), but not in Africa. Subgroup analysis in different genetic models (recessive, dominant, and additive) revealed significant association between rs2736340 and autoimmune diseases in Asia and North America, but not the recessive model in Europe or Africa, or the additive model in Africa. Stratification analysis by diseases suggested FAM167A-BLK rs2736340 had a positive association with rheumatoid arthritis (RA), systemic lupus erythematosus (SLE), systemic sclerosis (SSc) and Kawasaki disease, primary Sjogren's syndrome (pSS), primary antiphosholipid syndrome (APS), and myositis.
Conclusion:
The current meta-analysis suggested that FAM167A-BLK rs2736340 polymorphism is associated with several autoimmune diseases.
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