Type 1 diabetes in pre-school children--long-term metabolic control, associated autoimmunity and complications

Area of Science:

• Pediatric Endocrinology
• Autoimmune Diseases
• Metabolic Disorders

Background:

• Type 1 diabetes (T1D) diagnosis in early childhood presents unique clinical challenges.
• Understanding the long-term implications of early-onset T1D is crucial for effective management.
• Co-morbidity rates and metabolic control in very young T1D patients require further investigation.

Purpose of the Study:

• To identify clinical characteristics and co-morbidity rates in children diagnosed with Type 1 diabetes mellitus before the age of 6 years.
• To compare these findings with a cohort of children diagnosed with T1D at an older age.

Main Methods:

• Retrospective chart review of 103 patients diagnosed with T1D before age 6 (study group) and 220 patients diagnosed after age 6 (comparison group).
• Comparison of glycaemic control (HbA1c) and occurrence of co-morbidities including celiac disease, autoimmune thyroid disease, hypertension, nephropathy, and retinopathy.
• Statistical analysis using P-values and Kaplan-Meier survival analysis for diagnosis rates.

Main Results:

• Children diagnosed with T1D before age 6 had a significantly higher rate of celiac disease diagnosis within 10 years (14.4% vs 4.2%, P log-rank = 0.03).
• Higher mean HbA1c levels were observed in the early-onset group until age 10, with subsequent deterioration (8.0-8.2% rising to 8.8%).
• The early-onset group experienced more severe hypoglycaemic events (P = 0.03), but adjusted HbA1c differences were not significant after accounting for diabetes duration.

Conclusions:

• Early-onset T1D (before age 6) is associated with an increased risk of developing celiac disease.
• Good metabolic control in early-onset T1D is achievable up to age 10, but tends to worsen thereafter.
• Elevated HbA1c levels in this cohort are linked to the duration of the disease, not necessarily earlier diagnosis alone.