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Evaluation of a Diabetes Vaccine in Newly Diagnosed Diabetics

This study has been completed.
Sponsor:
Collaborator:
Immune Tolerance Network (ITN)
Information provided by (Responsible Party):
National Institute of Allergy and Infectious Diseases (NIAID)
ClinicalTrials.gov Identifier:
NCT00057499
First received: April 3, 2003
Last updated: June 4, 2014
Last verified: June 2014

April 3, 2003
June 4, 2014
March 2003
March 2007   (final data collection date for primary outcome measure)
Clinical endpoints including adverse events, local reactions, routine physical exams, insulin dose, and laboratory tests [ Time Frame: Throughout study ] [ Designated as safety issue: Yes ]
Clinical endpoints including adverse events, local reactions, routine physical exams, insulin dose, and laboratory tests
Complete list of historical versions of study NCT00057499 on ClinicalTrials.gov Archive Site
  • C-peptide levels in response to mixed meal tolerance test [ Time Frame: Throughout study ] [ Designated as safety issue: Yes ]
  • HbA1c, GAD65Ab, IAA, IA2Ab, GAD65Ab isotypes [ Time Frame: Throughout study ] [ Designated as safety issue: Yes ]
  • CD4- and CD8- Va24JaQ+ [ Time Frame: Throughout study ] [ Designated as safety issue: Yes ]
  • T cells' secretion of IL-4 and Interferon (IFN)-gamma [ Time Frame: Throughout study ] [ Designated as safety issue: Yes ]
  • C-peptide levels in response to mixed meal tolerance test
  • HbA1c, GAD65Ab, IAA, IA2Ab, GAD65Ab isotypes
  • CD4- and CD8- Va24JaQ+
  • T cells' secretion of IL-4 and INF-gamma
Not Provided
Not Provided
 
Evaluation of a Diabetes Vaccine in Newly Diagnosed Diabetics
Autoantigen Vaccination in Human Type 1 Newly Diagnosed Diabetes Mellitus

Insulin dependent diabetes mellitus (also called type 1 diabetes mellitus or T1DM) is caused by the destruction of insulin-producing cells in the pancreas. People with T1DM do not produce enough insulin, which is necessary for proper regulation of blood sugar levels.

T1DM is an autoimmune disease. An autoimmune disease is a disease in which the body's immune system attacks the body itself. In addition to regulating blood sugar, insulin may have the ability to protect cells in the pancreas from attack by the immune system. This study will evaluate whether an insulin-based vaccine can protect cells from autoimmune destruction.

Study hypothesis: IFA-enhanced human insulin B-chain vaccination will lead to the arrest or slowing of the ongoing autoimmunity, and this will result in an appreciable difference in functioning B cell mass compared to the placebo treated group by the end of the study.

The vaccine in this study, IBC-VSO1, is a synthetic, metabolically inactive form of insulin designed to prevent pancreatic beta-cell destruction. It does not cause fluctuations in blood sugar. This study will evaluate whether the vaccine protects against autoimmune attack at the onset of T1DM, before pancreas function has deteriorated. This experimental treatment must occur early because 60% to 85% of beta-cells are already destroyed by the time of T1DM diagnosis. If beta-cell destruction can be halted, a prolonged remission period after diagnosis may occur, with a subsequent delay in diabetes-related complications.

Participants must have been diagnosed with T1DM for no more than 3 months at the time of enrollment in this study. Participants will be randomly assigned to either a vaccine group or a control group. Participants in the vaccine group will receive one injection of IBC-VS01; participants in the control group will receive a placebo. Participants will then be monitored for 2 years. Participants will have ten follow-up visits, which will include blood tests for immunological and genetic analysis. Throughout the study, metabolic tests will also be performed to measure the remaining capacity of self insulin production of the body.

Interventional
Phase 1
Allocation: Randomized
Endpoint Classification: Safety Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Investigator)
Primary Purpose: Treatment
  • Insulin-dependent Diabetes Mellitus
  • Diabetes Mellitus
  • Biological: IBC-VS01
    IBC-VS01
  • Biological: IBC-VS01 placebo
    IBC-VS01 placebo
  • Experimental: IBC-VS01 vaccine
    IBC-VS01 vaccine is administered twice.
    Intervention: Biological: IBC-VS01
  • Placebo Comparator: Control Group
    IBC-VS01 placebo is administered twice
    Intervention: Biological: IBC-VS01 placebo
Orban T, Farkas K, Jalahej H, Kis J, Treszl A, Falk B, Reijonen H, Wolfsdorf J, Ricker A, Matthews JB, Tchao N, Sayre P, Bianchine P. Autoantigen-specific regulatory T cells induced in patients with type 1 diabetes mellitus by insulin B-chain immunotherapy. J Autoimmun. 2010 Jun;34(4):408-15.

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Completed
12
March 2007
March 2007   (final data collection date for primary outcome measure)

Inclusion Criteria:

  • Diagnosed with type 1 diabetes mellitus within 3 months prior to study entry
  • Positive for IAA, GAD65, or IA2 antibodies OR positive for GAD65 or IA2 antibodies after 2 weeks of starting insulin treatment

Exclusion Criteria:

  • History of treatment with any oral hypoglycemic agent for more than 3 months
  • Ongoing use of medications known to influence glucose tolerance
  • History of immunosuppressive or steroid therapy for more than 3 months within the 2 years prior to study entry
  • Severe active liver, heart, kidney, or immunodeficiency disease that may limit life expectancy or may require immunosuppression during the study
  • Prior complications related to routine vaccinations
  • Prior participation in a trial for prevention of type 1 diabetes mellitus. Individuals who are known to have been in the placebo arm of a completed prevention trial are not excluded.
  • Any condition that may interfere with a participant's ability to comply with the study
  • Pregnancy or planned pregnancy within the time frame of the study
Both
18 Years to 35 Years
No
Contact information is only displayed when the study is recruiting subjects
United States
 
NCT00057499
DAIT ITN012AI, DAIT BD012
Not Provided
National Institute of Allergy and Infectious Diseases (NIAID)
National Institute of Allergy and Infectious Diseases (NIAID)
Immune Tolerance Network (ITN)
Principal Investigator: Tihamer Orban, MD Joslin Diabetes Center
National Institute of Allergy and Infectious Diseases (NIAID)
June 2014

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP