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The Association of CTLA-4 rs231775 and rs3087243 Polymorphisms with Latent Autoimmune Diabetes in Adults: A Meta-Analysis

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Abstract

Polymorphisms rs231775 and rs3087243 of cytotoxic T-lymphocyte-associated antigen 4 (CTLA-4) gene have been associated with risk of latent autoimmune diabetes in adults (LADA). However, the results were inconsistent. The purpose of this study was to quantitatively assess the relationship between polymorphisms rs231775 and rs3087243 of CTLA-4 and LADA in a larger pooled population by performing a meta-analysis. Systematic search for eligible studies was conducted in PubMed, Web of Science, and Embase. Case–control studies containing genotype frequencies of polymorphisms rs231775 or rs3087243 were selected, and pooled odds ratios (ORs) with 95% confidence intervals (CIs) were used to assess the associations between polymorphisms of CTLA-4 and LADA in allelic, dominant and recessive genetic model. A total of eleven studies, in which five studies reported rs231775, two studies reported rs3087342, and four studies reported both rs231775 and rs3087243, were identified. Among them, one study wasn’t included in the following meta-analysis because the distribution of genotypes in the control group didn’t comply with Hardy–Weinberg equilibrium. Significant associations with susceptibility to LADA were detected for rs231775 (785 cases and 3435 controls) and for rs3087243 (820 cases and 4824 controls) in overall population. Further subgroup analyses for ethnicity (Asian, Caucasian, and African) have also indicated the positive association between rs231775 and LADA. As for rs3087243, subgroup analyses detected the association between polymorphism and LADA in Caucasian population under recessive model. Polymorphisms rs231775 and rs3087243 of CTLA-4 gene are potential risk factors for LADA and may serve as novel genetic biomarkers of LADA.

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Funding

This work was supported by the National Natural Science Foundation of China (grant numbers 82070813, 81873634, 81400783), the National Key R&D Program of China (grant numbers 2016YFC1305000, 2016YFC1305001, 2018YFC1315603), and the Hunan Province Natural Science Foundation of China (Grant No. 2018JJ2573, 2020JJ2053).

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ZX and ZZ participated in research design. HP, SL, GH, and XL selected the articles. HP performed the data analysis. The manuscript was drafted by HP and critically reviewer and discussed with other co-authors. All the authors read and approved the final manuscript.

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Correspondence to Zhiguo Xie.

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Pang, H., Luo, S., Huang, G. et al. The Association of CTLA-4 rs231775 and rs3087243 Polymorphisms with Latent Autoimmune Diabetes in Adults: A Meta-Analysis. Biochem Genet 60, 1222–1235 (2022). https://doi.org/10.1007/s10528-021-10152-w

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  • DOI: https://doi.org/10.1007/s10528-021-10152-w

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