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No association between the deltaF508 cystic fibrosis mutation and type 2 diabetes mellitus

J Braun1, J Arnemann, M Lohrey

  • 1Medical Clinic I, Department of Endocrinology, University of Frankfurt/Main, Germany.

Experimental and Clinical Endocrinology & Diabetes : Official Journal, German Society of Endocrinology [And] German Diabetes Association
|December 28, 1999
PubMed

Insights

Heterozygosity for the deltaF508 mutation, common in cystic fibrosis (CF), was investigated as a risk factor for type 2 diabetes. This study found no significant association, indicating deltaF508 is not a major genetic risk factor for type 2 diabetes.

Area of Science:

  • Genetics and Human Health
  • Metabolic Disorders

Background:

  • Cystic fibrosis (CF) is a common inherited disorder caused by CFTR gene mutations.
  • The deltaF508 mutation is the most prevalent CF mutation.
  • Increased type 2 diabetes mellitus (T2DM) incidence in CF relatives suggests a potential genetic link.

Purpose of the Study:

  • To investigate if heterozygosity for the deltaF508 mutation is a genetic risk factor for T2DM.
  • To evaluate the prevalence of deltaF508 heterozygotes in T2DM patients and healthy controls.

Main Methods:

  • Genotyping analysis was performed on 301 T2DM patients and 282 healthy controls.
  • Patients with T2DM had received treatment for at least three years.
  • Controls had no family history of diabetes.

Main Results:

  • The genotype distribution of deltaF508 heterozygotes did not significantly differ between T2DM patients (2%) and controls (3%).
  • These findings suggest a lack of association between deltaF508 heterozygosity and T2DM.

Conclusions:

  • Heterozygosity for the deltaF508 mutation is not a major genetic risk factor for type 2 diabetes mellitus.
  • Further research may explore other genetic or environmental factors contributing to T2DM in CF-related populations.

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