Prevalence of double diabetes in youth onset diabetes patients from east Delhi and neighboring NCR region

Diabetes Metab Syndr. 2018 Nov;12(6):839-842. doi: 10.1016/j.dsx.2017.08.016. Epub 2017 Sep 9.


Background: It is being increasingly reported that some of the youth onset diabetes patients cannot be classified clearly as type 1 diabetes mellitus (T1DM) or type 2 diabetes mellitus (T2DM) based on usual criteria and the term double diabetes (DD) coined for these cases.

Aim: The objective of the study was to find out the prevalence of DD in youth onset diabetes patients from east Delhi and neighboring NCR region.

Methods: A total of 200 patients with youth onset diabetes below 25 years of age were recruited from a tertiary care hospital in East Delhi. Clinical history, family history of diabetes and anthropometry of patients were recorded. Fasting serum C-peptide, Anti-IA2-antibody and Anti-GAD-antibody were measured in all patients. Patients positive for Anti-GAD-antibody (>1.05U/ml) and C-peptide level >0.3nmol/l were characterized as DD patients. Patients negative for Anti-GAD-antibody and C-peptide >0.3nmol/l were kept under the category of T2DM. Patients with low C-peptide level along with one of the following, positive Anti-GAD-antibody, positive Anti-IA2-antibody and diabetic ketoacidosis (DKA) were considered as T1DM. Remaining patients were kept under the unknown category.

Results: Mean age of study subjects was 18.2±7.1years. Seven percent (7%) of the subjects were classified as DD, 51% as T1DM, 13% as T2DM and 29% were kept under the unknown category. Mean age of subjects with 22.2±9.7, 16.9±6.7, 20.6±7.7 and 19.4±7.4 years in DD, T1DM, T2DM and unknown category respectively. Mean BMI of subjects with DD, T1DM, T2DM and unknown category was 19.8±5.7, 16.6±3.7, 19.3±4.1 and 18.0±4.6 kg/m2 respectively.

Conclusion: Double diabetes is an important occurrence among youth onset diabetes subjects. Only half of the subjects with youth onset of diabetes had T1DM.

Keywords: Anti GAD antibody; Anti IA2 antibody; C-peptide; Double diabetes.

MeSH terms

  • Adolescent
  • Age of Onset
  • Child
  • Diabetes Mellitus, Type 1 / epidemiology*
  • Diabetes Mellitus, Type 2 / epidemiology*
  • Female
  • Humans
  • India / epidemiology
  • Male
  • Prevalence
  • Young Adult