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Prevalence of coeliac disease in diabetic children and adolescents. A multicentre study
S Koletzko1, A Bürgin-Wolff, B Koletzko
1Kinderklinik der Universität, Düsseldorf, Federal Republic of Germany.
Insights
Screening for coeliac disease (CD) in diabetic children using antigliadin antibodies (AGA) revealed a 1.1-1.3% prevalence. Early diabetes duration increased false-positive AGA results, impacting diagnostic specificity.
Area of Science:
- Pediatric Endocrinology
- Gastroenterology
- Immunology
Background:
- Type 1 diabetes and coeliac disease (CD) are autoimmune conditions that can co-occur.
- Screening for CD in diabetic populations is crucial for early diagnosis and management.
Purpose of the Study:
- To determine the prevalence of coeliac disease (CD) in a cohort of diabetic children and adolescents.
- To evaluate the utility of serum antigliadin antibodies (AGA) for screening CD in this population.
Main Methods:
- Serum antigliadin antibodies (AGA) screening was conducted in 1032 diabetic children and adolescents.
- Follow-up testing and jejunal biopsies were performed for positive AGA cases.
- Diabetes duration and age at manifestation were analyzed in relation to CD diagnosis.
Main Results:
- An estimated 1.1-1.3% prevalence of CD was found in Swiss and German diabetic children.
- False-positive AGA titres were more frequent in patients with diabetes duration less than 1 year.
- Children with both diabetes and CD presented with earlier diabetes onset but later CD diagnosis.
Conclusions:
- AGA screening is a valuable tool for coeliac disease (CD) detection in diabetic children, with optimal specificity after one year of diabetes.
- Co-occurrence of diabetes and CD impacts age of disease manifestation and diagnosis.
- Further research is warranted to refine screening protocols and understand the interplay between these conditions.
Abstract:
Screening for coeliac disease (CD) with serum antigliadin antibodies (AGA) was performed in 1032 diabetic children and adolescents. In 8 children CD had been diagnosed before study entry. Of the remaining 1024 children, 33 had an elevated AGA titre in the first serum sample. On follow-up an elevated AGA titre was confirmed in only 17 of 31 patients. Nine of the repeatedly positive patients underwent jejunal biopsy, and CD was diagnosed in two asymptomatic patients; both were positive for IgG- and IgA-AGA. Among 10 AGA-positive patients in whom biopsies could not be performed, only 1 showed IgA-AGA and thus carried a high risk for CD. From our results we estimate a prevalence of CD in Swiss and German diabetic children between 1.1% and 1.3%. False-positive AGA titres occurred significantly more often in patients with diabetes duration of less than 1 year. AGA testing reached a specificity of 99% if performed at least 1 year after the onset of diabetes. Children suffering from both diabetes and CD showed a diabetes manifestation at a significantly younger age than non-coeliac patients, whereas CD tended to be diagnosed at a remarkably late age.
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