Abstract
Background Cytotoxic T lymphocyte antigen-4 (CTLA-4) molecule is an important regulator of T cell activation involved in the down-regulation of immune response. Polymorphisms within the CTLA-4 gene have been suggested to confer susceptibility to autoimmune endocrine disorders. Methods In order to evaluate the impact of allelic variants of the CTLA-4 gene in latent autoimmune diabetes in adults (LADA), the CT60 A/G SNP and the CTBC217_1 C/T SNP were studied in a population of Estonian origin, including 61 LADA patients and 230 controls. Results It was found that the CT60 GG genotype ( p = 0.004) and the CTBC217_1 TT genotype ( p = 0.007) were significant associated with LADA. Conclusions Our investigation revealed that not only type 1 diabetes but also LADA is associated with CTLA-4 gene polymorphisms. The role of CTLA-4 gene in the pathogenesis of LADA is open and needs further investigations.
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