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Published in: Acta Diabetologica 5/2014

Open Access 01-10-2014 | Review Article

The association of PTPN22 rs2476601 polymorphism and CTLA-4 rs231775 polymorphism with LADA risks: a systematic review and meta-analysis

Authors: Fang Dong, Guang Yang, Hong-Wei Pan, Wei-Huang Huang, Li-Peng Jing, Wen-Kai Liang, Na Zhang, Bao-Huan Zhang, Man Wang, Yang Liu, Li-Ju Zhang, Si-Heng Zhang, He Li, Chuan Chen, Li-Hong Nie, Chun-Xia Jing

Published in: Acta Diabetologica | Issue 5/2014

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Abstract

Although the polymorphisms of PTPN22 and the variants of CTLA-4 have been reported to be the susceptibility genes, which increased risk of latent autoimmune diabetes in adults (LADA), the results remained inconclusive. The aim of this meta-analysis was to evaluate the association between the polymorphisms of two genes and LADA. We performed a systematic review by identifying relevant studies and applied meta-analysis to pool gene effects. Data from ten studies published between 2001 and 2013 were pooled for two polymorphisms: rs2476601 in the PTPN22 gene and rs231775 in the CTLA-4 gene. Data extraction and assessments for risk of bias were independently performed by two reviewers. Fixed-effect model and random-effect model were used to pool the odds ratios; meanwhile, heterogeneity test, publication bias and sensitive analysis were explored. The minor T allele at rs2476601 and the minor G at rs231775 carried estimated relative risks (odds ratio) of 1.52 (95 % CI 1.29–1.79) and 1.39 (95 % CI 1.11–1.74), respectively. These alleles contributed to an absolute lowering of the risk of all LADA by 4.88 and 14.93 % when individuals do not carry these alleles. The estimated lambdas were 0.49 and 0.63, suggesting a codominant model of effects was most likely for two genes. In summary, our systematic review has demonstrated that PTPN22 rs2476601 and CTLA-4 rs231775 are potential risk factors for LADA. An updated meta-analysis is required when more studies are published to increase the power of these polymorphisms and LADA.
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Metadata
Title
The association of PTPN22 rs2476601 polymorphism and CTLA-4 rs231775 polymorphism with LADA risks: a systematic review and meta-analysis
Authors
Fang Dong
Guang Yang
Hong-Wei Pan
Wei-Huang Huang
Li-Peng Jing
Wen-Kai Liang
Na Zhang
Bao-Huan Zhang
Man Wang
Yang Liu
Li-Ju Zhang
Si-Heng Zhang
He Li
Chuan Chen
Li-Hong Nie
Chun-Xia Jing
Publication date
01-10-2014
Publisher
Springer Milan
Published in
Acta Diabetologica / Issue 5/2014
Print ISSN: 0940-5429
Electronic ISSN: 1432-5233
DOI
https://doi.org/10.1007/s00592-014-0613-z

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