Association between CTLA-4 gene polymorphisms and Type 1 diabetes in Kurdish patients - Report - MDSpire

Association between CTLA-4 gene polymorphisms and Type 1 diabetes in Kurdish patients

  • By

  • Hero H. Muhammed Saed

  • Gaza F. Salih

  • Hassan Mohammad Tawfeeq

  • July 8, 2026

  • 0 min

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Clinical Report: Link Between CTLA-4 Genetic Variants and T1D in Kurds

Overview

This study investigates the association of CTLA-4 genetic variants with type 1 diabetes (T1D) susceptibility in the Kurdish population. The A>G (rs231775) variant was associated with T1D, while the -318 C>T (rs5742909) polymorphism showed no significant differences.

Background

Type 1 diabetes is a complex autoimmune disease influenced by genetic and environmental factors. This study focuses on the Kurdish population and the role of CTLA-4 variants in T1D susceptibility.

Data Highlights

VariantAssociation with T1DSignificance
A>G (rs231775)AssociatedP = 0.0188
-318 C>T (rs5742909)No significant differencesN/A
GG genotype prevalence in anti-GAD positive77.78% vs. 22.22%P = 0.28

Key Findings

  • The A>G (rs231775) variant is associated with T1D susceptibility in the Kurdish population.
  • The G allele frequency was higher in T1D patients (36.5%, P = 0.0188).
  • The -318 C>T (rs5742909) polymorphism showed no significant differences between T1D patients and controls.
  • The GG genotype of the +49A/G polymorphism was more prevalent in anti-GAD positive patients (77.78% vs. 22.22%).
  • CTLA-4 mRNA expression was non-significantly elevated in T1D patients compared to controls (p = 0.1239).

Clinical Implications

The findings suggest that genetic screening for the CTLA-4 A>G variant may help identify individuals at higher risk for T1D in the Kurdish population. Understanding these genetic associations can inform future research and potential therapeutic strategies.

Conclusion

The study reports an association of the CTLA-4 A>G variant with T1D susceptibility in the Kurdish population, while the -318 C>T polymorphism did not show significant differences.

Related Resources & Content

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  9. Adult-onset type 1 diabetes: early detection, differential diagnosis, and emerging disease-modifying therapies - ScienceDirect
  10. Type 1 diabetes mellitus prevention: present and future | Nature Reviews Endocrinology

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