Insulin needs after CD3-antibody therapy in new-onset type 1 diabetes

Bart Keymeulen, Evy Vandemeulebroucke, Anette G Ziegler, Chantal Mathieu, Leonard Kaufman, Geoff Hale, Frans Gorus, Michel Goldman, Markus Walter, Sophie Candon, Liliane Schandene, Laurent Crenier, Christophe De Block, Jean-Marie Seigneurin, Pieter De Pauw, Denis Pierard, Ilse Weets, Peppy Rebello, Pru Bird, Eleanor BerrieMark Frewin, Herman Waldmann, Jean-François Bach, Daniel Pipeleers, Lucienne Chatenoud

Research output: Contribution to journalArticlepeer-review


BACKGROUND: Type 1 diabetes mellitus is a T-cell-mediated autoimmune disease that leads to a major loss of insulin-secreting beta cells. The further decline of beta-cell function after clinical onset might be prevented by treatment with CD3 monoclonal antibodies, as suggested by the results of a phase 1 study. To provide proof of this therapeutic principle at the metabolic level, we initiated a phase 2 placebo-controlled trial with a humanized antibody, an aglycosylated human IgG1 antibody directed against CD3 (ChAglyCD3).

METHODS: In a multicenter study, 80 patients with new-onset type 1 diabetes were randomly assigned to receive placebo or ChAglyCD3 for six consecutive days. Patients were followed for 18 months, during which their daily insulin needs and residual beta-cell function were assessed according to glucose-clamp-induced C-peptide release before and after the administration of glucagon.

RESULTS: At 6, 12, and 18 months, residual beta-cell function was better maintained with ChAglyCD3 than with placebo. The insulin dose increased in the placebo group but not in the ChAglyCD3 group. This effect of ChAglyCD3 was most pronounced among patients with initial residual beta-cell function at or above the 50th percentile of the 80 patients. In this subgroup, the mean insulin dose at 18 months was 0.22 IU per kilogram of body weight per day with ChAglyCD3, as compared with 0.61 IU per kilogram with placebo (P<0.001). In this subgroup, 12 of 16 patients who received ChAglyCD3 (75 percent) received minimal doses of insulin (< or =0.25 IU per kilogram per day) as compared with none of the 21 patients who received placebo. Administration of ChAglyCD3 was associated with a moderate "flu-like" syndrome and transient symptoms of Epstein-Barr viral mononucleosis.

CONCLUSIONS: Short-term treatment with CD3 antibody preserves residual beta-cell function for at least 18 months in patients with recent-onset type 1 diabetes.

Original languageEnglish
Pages (from-to)2598-2608
Number of pages11
JournalN Engl J Med
Issue number25
Publication statusPublished - 23 Jun 2005

Bibliographical note

Copyright 2005 Massachusetts Medical Society.


  • Adolescent
  • Adult
  • Autoantibodies/blood
  • Blood Glucose/analysis
  • C-Peptide/biosynthesis
  • CD3 Complex/immunology
  • Child
  • Diabetes Mellitus, Type 1/blood
  • Female
  • Glucose Clamp Technique
  • Herpesviridae/isolation & purification
  • Humans
  • Hypoglycemic Agents/therapeutic use
  • Immunoglobulin G/adverse effects
  • Insulin/therapeutic use
  • Islets of Langerhans/drug effects
  • Male


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