Demographic and diagnostic markers in new onset pediatric type 1 and type 2 diabetes: differences and overlaps

Area of Science:

• Pediatric Endocrinology
• Metabolic Disorders
• Diabetes Mellitus Research

Background:

• Type 1 diabetes (T1D) is the predominant form of diabetes in children, but type 2 diabetes (T2D) incidence is rising.
• Accurate classification of diabetes in pediatric patients is crucial for appropriate management and treatment strategies.

Purpose of the Study:

• To compare the demographic, clinical, and laboratory features distinguishing T1D from T2D at the time of diagnosis in a pediatric population.
• To identify key characteristics that aid in differentiating between T1D and T2D in children.

Main Methods:

• A retrospective study involving 753 children diagnosed with T2D and 758 with T1D at a large academic hospital.
• Comparison of patient characteristics including age, sex, race/ethnicity, obesity, glucose levels, hemoglobin A1c, islet autoantibody status, C-peptide levels, and presence of diabetic ketoacidosis (DKA).

Main Results:

• Children with T2D were older, more frequently female, belonged to racial/ethnic minorities, and were more likely to be obese compared to those with T1D.
• T2D cases showed lower glucose, hemoglobin A1c, and C-peptide levels, and were less likely to present with DKA or have positive islet autoantibodies.
• Logistic regression identified older age, minority status, obesity, higher C-peptide, and negative autoantibodies as independent predictors of T2D.

Conclusions:

• Significant demographic and clinical differences exist between pediatric T1D and T2D at diagnosis.
• Despite these differences, no single characteristic was exclusive to either T1D or T2D, highlighting challenges in definitive classification at initial presentation.