Age, HLA, and sex define a marked risk of organ-specific autoimmunity in first-degree relatives of patients with type 1 diabetes.
Diabetes Care 42, 1684-1691 (2019)
OBJECTIVE Autoimmune diseases can be diagnosed early through the detection of autoantibodies. The aim of this study was to determine the risk of organ-specific autoimmunity in individuals with a family history of type 1 diabetes. RESEARCH DESIGN AND METHODS The study cohort included 2,441 first-degree relatives of patients with type 1 diabetes who were prospectively followed from birth to a maximum of 29.4 years (median 13.2 years). All were tested regularly for the development of autoantibodies associated with type 1 diabetes (islet), celiac disease (transglutaminase), or thyroid autoimmunity (thyroid peroxidase). The outcome was defined as an autoantibody-positive status on two consecutive samples. RESULTS In total, 394 relatives developed one (n = 353) or more (n = 41) of the three disease-associated autoantibodies during follow-up. The risk by age 20 years was 8.0% (95% CI 6.8-9.2%) for islet autoantibodies, 6.3% (5.1-7.5%) for transglutaminase autoantibodies, 10.7% (8.9-12.5%) for thyroid peroxidase autoantibodies, and 21.5% (19.5-23.5%) for any of these autoantibodies. Each of the three disease-associated autoantibodies was defined by distinct HLA, sex, genetic, and age profiles. The risk of developing any of these autoantibodies was 56.5% (40.8-72.2%) in relatives with HLA DR3/DR3 and 44.4% (36.6-52.2%) in relatives with HLA DR3/DR4-DQ8. CONCLUSIONS Relatives of patients with type 1 diabetes have a very high risk of organ-specific autoimmunity. Appropriate counseling and genetic and autoantibody testing for multiple autoimmune diseases may be warranted for relatives of patients with type 1 diabetes.
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Publication type
Article: Journal article
Document type
Scientific Article
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Keywords
Antibody Standardization Program; Islet Autoantibodies; Thyroid Autoimmunity; Celiac-disease; Beta-cell; Dq Types; Children; Childhood; Mellitus; Insulin
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Language
english
Publication Year
2019
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HGF-reported in Year
2019
ISSN (print) / ISBN
0149-5992
e-ISSN
1935-5548
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Volume: 42,
Issue: 9,
Pages: 1684-1691
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American Diabetes Association
Publishing Place
Alexandria, Va.
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Reviewing status
Peer reviewed
POF-Topic(s)
30201 - Metabolic Health
90000 - German Center for Diabetes Research
Research field(s)
Helmholtz Diabetes Center
PSP Element(s)
G-502100-001
G-501900-217
G-502600-006
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Erfassungsdatum
2019-06-27