Interleukin-7 and soluble Interleukin-7 receptor levels in type 1 diabetes - Impact of IL7RA polymorphisms, HLA risk genotypes and clinical features.

Clinical immunology (Orlando, Fla.) 2022 Feb

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High soluble IL-7 receptor (sIL-7R) serum levels and associated single nucleotide polymorphisms in the IL7RA gene were found in autoimmune diseases including type 1 diabetes. Further determinants on sIL-7R and IL-7 availability as well as changes during type 1 diabetes disease course remain elusive. Here we performed multiparameter analysis to identify influential genetic and disease-associated factors on sIL-7R and IL-7 serum levels during type 1 diabetes disease course (239 children) and in healthy controls (101 children). We found higher sIL-7R serum concentrations at type 1 diabetes onset and decreasing levels during therapy whereas IL-7 was only higher in long term patients as compared to controls. Multiple linear regression analyses revealed several factors, including IL7RA SNP rs6897932 and HLA risk haplotypes, influencing sIL-7R levels but not IL-7, which was solely associated with the sIL-7R. This study revealed unexpected complexity in the regulation of the sIL-7R but not for IL-7. Copyright © 2022 Elsevier Inc. All rights reserved.

Citation

Maximilian Hoffmann, Jürgen Enczmann, Vera Balz, Sebastian Kummer, Christina Reinauer, Carsten Döing, Katharina Förtsch, Alena Welters, Malte Kohns Vasconcelos, Ertan Mayatepek, Thomas Meissner, Marc Jacobsen, Julia Seyfarth. Interleukin-7 and soluble Interleukin-7 receptor levels in type 1 diabetes - Impact of IL7RA polymorphisms, HLA risk genotypes and clinical features. Clinical immunology (Orlando, Fla.). 2022 Feb;235:108928