Diabetologia

, Volume 44, Issue 8, pp 1051–1053

Prevalence of coeliac disease in siblings of patients with Type I diabetes is related to the prevalence of DQB1*02 allele

  • T. Saukkonen
  • J. Ilonen
  • H. K. Åkerblom
  • E. Savilahti
  • and the Childhood Diabetes in Finland Study Group
Article

DOI: 10.1007/s001250100591

Cite this article as:
Saukkonen, T., Ilonen, J., Åkerblom, H. et al. Diabetologia (2001) 44: 1051. doi:10.1007/s001250100591
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Abstract.

Aims/hypothesis:

Coeliac disease is more prevalent among patients with Type I (insulin-dependent) diabetes mellitus and coeliac disease-related antibodies have been reported to increase in frequency in their first-degree relatives. Our aim was to find out if coeliac disease is more common among siblings of children with Type I diabetes than in the normal population.

Methods:

IgA endomysium antibodies were measured by indirect immunofluorescence in 550 subjects (mean age 11.8 years, range 3.1–26.9 years) with a sibling with Type I diabetes. We performed jejunal biopsy on as many subjects with positive antibodies as agreed. HLA-DQB1 genotyping was done in 427 subjects.

Results:

Endomysium antibodies were positive in nine subjects (1.6 %). Jejunal biopsy was diagnostic for coeliac disease in five out of seven patients. An additional patient with coeliac disease, one already on a gluten-free diet, was identified by questionnaire. The prevalence of coeliac disease was 1.1 %. Five of six patients with coeliac disease had HLA-DQB1*02 allele, compared with 118 of 421 of those without coeliac disease (p = 0.009). The sixth patient was positive for HLA-DQB1*0302 allele, which was also found in 241 of 421 of those without coeliac disease (p = 0.4).

Conclusion/interpretation:

We found the prevalence of coeliac disease among siblings of children with Type I diabetes to be similar to figures reported from recent population-based studies and to be correlated with the prevalence of coeliac disease associated HLA-DQB1 alleles. We propose that routine screening for coeliac disease among all first-degree relatives of patients with Type I diabetes is not warranted. [Diabetologia (2001) 44: 1051–1053]

Keywords Endomysium antibodiesCoeliac diseaseType I diabetesScreeningHLA-DQ.
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Copyright information

© Springer-Verlag Berlin Heidelberg 2001

Authors and Affiliations

  • T. Saukkonen
    • 1
  • J. Ilonen
    • 2
  • H. K. Åkerblom
    • 1
  • E. Savilahti
    • 1
  • and the Childhood Diabetes in Finland Study Group
  1. 1.Hospital for Children and Adolescents, University of Helsinki, Helsinki, FinlandFI
  2. 2.Turku Immunology Centre and Department of Virology, University of Turku, Turku, FinlandFI