Islet autoantibody profiles at diagnosis of childhood type 1 Diabetes: Age-Dependent heterogeneity and clinical implications
Authors' conclusion
IA profiles at diagnosis demonstrate marked age-dependent heterogeneity with significant clinical meaning. Single-autoantibody positivity and antibody negativity were common, particularly among older children. Age-informed interpretation of autoantibody status is essential and has implications for clinical assessment and population-based screening strategies.
Study context
- Population
- Children with newly diagnosed T1D
- Exposure
- Age at diagnosis: 1-6 vs 6-12 vs >12 years
- Outcome
- Islet autoantibody profiles (number and combinations) at diagnosis in relation to age and clinical presentation
- Follow-up
- At diagnosis
Main finding
As reported in the abstract
IA profiles at diagnosis by age
- Pronounced age-dependent heterogeneity in islet autoantibody (IA) profiles
- Younger children significantly more likely to have multiple autoantibodies, frequently including IAA
- Older children more commonly single-autoantibody positive, predominantly glutamic acid decarboxylase (GADA)
- Age-related patterns in specific autoantibody combinations
Observational data: associations, not effects.
Further findings
Clinical presentation and metabolic severity at diagnosis
- Single-autoantibody positivity not associated with milder clinical presentation
- Metabolic severity largely independent of number or combination of autoantibodies
Original publication
Islet autoantibody profiles at diagnosis of childhood type 1 Diabetes: Age-Dependent heterogeneity and clinical implications. Diabetes Res Clin Pract. Published 27 March 2026. doi:10.
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