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The role of PTPN22 C1858T gene polymorphism in diabetes mellitus type 1: first evaluation in Greek children and adolescents.

TitleThe role of PTPN22 C1858T gene polymorphism in diabetes mellitus type 1: first evaluation in Greek children and adolescents.
Publication TypeJournal Article
Year of Publication2013
AuthorsGiza, S., Goulas A., Gbandi E., Effraimidou S., Papadopoulou-Alataki E., Eboriadou M., & Galli-Tsinopoulou A.
JournalBiomed Res Int
Volume2013
Pagination721604
Date Published2013
ISSN2314-6141
KeywordsAdolescent, Alleles, Child, Diabetes Mellitus, Type 1, Female, Gene Frequency, Genetic Association Studies, Genetic Predisposition to Disease, Genotype, Humans, Male, Polymorphism, Single Nucleotide, Protein Tyrosine Phosphatase, Non-Receptor Type 22
Abstract

Type 1 diabetes mellitus (T1DM) is an autoimmune multifactorial disease. Protein tyrosine phosphatase nonreceptor type 22 (PTPN22) gene encodes lymphoid-specific tyrosine phosphatase (Lyp), an inhibitor of T cell activation. PTPN22 C1858T polymorphism was associated with T1DM in populations of Caucasian origin. The aim of this study was the investigation for the first time of the association of PTPN22 C1858T polymorphism with T1DM in Greek population. We studied 130 children and adolescents with T1DM and 135 healthy individuals of Greek origin. The polymorphism was genotyped using polymerase chain reaction with restriction fragment length polymorphism. C1858T and T1858T genotypes as well as 1858T allele were found more frequently in patients (10.8% and 5.8%, resp.) than in healthy individuals (5.9% and 3.0%, resp.) but at non statistically significant level. There was no statistically significant association found with gender, age at diagnosis, severity of onset, history of Hashimoto thyroiditis or family history of T1DM. Increased frequency of 1858T allele in patients than in controls, implying a probable association, agrees with results of similar studies on other populations. The inability to find a statistically significant difference is probably due to the decreased frequency of minor allele in Greek population, indicating the need for a larger sample.

DOI10.1155/2013/721604
Alternate JournalBiomed Res Int
PubMed ID23936838
PubMed Central IDPMC3727122

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