[HTML][HTML] GAD65 antigen therapy in recently diagnosed type 1 diabetes mellitus

J Ludvigsson, D Krisky, R Casas… - … England Journal of …, 2012 - Mass Medical Soc
J Ludvigsson, D Krisky, R Casas, T Battelino, L Castaņo, J Greening, O Kordonouri
New England Journal of Medicine, 2012Mass Medical Soc
Background The 65-kD isoform of glutamic acid decarboxylase (GAD65) is a major
autoantigen in type 1 diabetes. We hypothesized that alum-formulated GAD65 (GAD-alum)
can preserve beta-cell function in patients with recent-onset type 1 diabetes. Methods We
studied 334 patients, 10 to 20 years of age, with type 1 diabetes, fasting C-peptide levels of
more than 0.3 ng per milliliter (0.1 nmol per liter), and detectable serum GAD65
autoantibodies. Within 3 months after diagnosis, patients were randomly assigned to receive …
Background
The 65-kD isoform of glutamic acid decarboxylase (GAD65) is a major autoantigen in type 1 diabetes. We hypothesized that alum-formulated GAD65 (GAD-alum) can preserve beta-cell function in patients with recent-onset type 1 diabetes.
Methods
We studied 334 patients, 10 to 20 years of age, with type 1 diabetes, fasting C-peptide levels of more than 0.3 ng per milliliter (0.1 nmol per liter), and detectable serum GAD65 autoantibodies. Within 3 months after diagnosis, patients were randomly assigned to receive one of three study treatments: four doses of GAD-alum, two doses of GAD-alum followed by two doses of placebo, or four doses of placebo. The primary outcome was the change in the stimulated serum C-peptide level (after a mixed-meal tolerance test) between the baseline visit and the 15-month visit. Secondary outcomes included the glycated hemoglobin level, mean daily insulin dose, rate of hypoglycemia, and fasting and maximum stimulated C-peptide levels.
Results
The stimulated C-peptide level declined to a similar degree in all study groups, and the primary outcome at 15 months did not differ significantly between the combined active-drug groups and the placebo group (P=0.10). The use of GAD-alum as compared with placebo did not affect the insulin dose, glycated hemoglobin level, or hypoglycemia rate. Adverse events were infrequent and mild in the three groups, with no significant differences.
Conclusions
Treatment with GAD-alum did not significantly reduce the loss of stimulated C peptide or improve clinical outcomes over a 15-month period. (Funded by Diamyd Medical and the Swedish Child Diabetes Foundation; ClinicalTrials.gov number, NCT00723411.)
The New England Journal Of Medicine