Clinical characteristics, GAD antibody (GADA) and change of C-peptide in Korean young age of onset diabetic patients

C. W. Ahn, H. S. Kim, J. H. Nam, Y. D. Song, S. K. Lim, K. R. Kim, H. C. Lee, K. B. Huh

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


Aims: To investigate the association of clinical and immunological markers with diabetes classification in newly diagnosed young diabetic patients at disease onset. Methods: Eighty-two diabetic patients recruited within 1 year of onset (mean age 23.0 ± 7.1, M:F = 46:36) were divided into three groups, namely: a low fasting C-peptide (FC) level at baseline group (the low FC group (n = 14, FC < 0.18 nmol/l)), an intermediate FC group (n = 29, 0.18 nmol/l ≤ FC < 0.37 nmol/l), and a high FC group (n = 39, 0.37 nmol/l ≤ FC). Patients were reclassified at follow-up (mean follow-up period 3.7 ± 1.4 years) in the same manner as described above into low FC group (n = 31), intermediate FC group (n = 20), and high FC group (n = 31). The clinical characteristics and prevalence of GADA were compared. Results: Patients in the high FC group at baseline had a higher body mass index (BMI), a higher frequency of a family history of diabetes, a higher meal-stimulated C-peptide increment, a lower frequency of ketonuria, a lower frequency of history of diabetic ketoacidosis, and a lower frequency of insulin therapy at diagnosis than those in the low and intermediate FC groups at baseline. Insulin secretory capacity, which was represented by fasting C-peptide, was affected by BMI at diagnosis and the presence of GADA. All the patients of the low FC group on follow-up were finally classified as having Type 1 diabetes; moreover, the factors that determined the type of diabetes were lower BMI at onset, GADA positivity, insulin therapy, lower fasting C-peptide level and lower meal-stimulated C-peptide increment at initial admission. Conclusions: Our study suggests that follow-up involving C-peptide and GADA measurements in combination with clinical characteristics is useful for discriminating between the types of diabetes in these groups.

Original languageEnglish
Pages (from-to)227-233
Number of pages7
JournalDiabetic Medicine
Issue number3
Publication statusPublished - 2002

All Science Journal Classification (ASJC) codes

  • Internal Medicine
  • Endocrinology, Diabetes and Metabolism
  • Endocrinology


Dive into the research topics of 'Clinical characteristics, GAD antibody (GADA) and change of C-peptide in Korean young age of onset diabetic patients'. Together they form a unique fingerprint.

Cite this