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The Diabetes Prevention Trial of Type 1 Diabetes (DPT-1)

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ClinicalTrials.gov Identifier: NCT00004984
Recruitment Status : Completed
First Posted : March 14, 2000
Last Update Posted : January 15, 2010
Information provided by:

Study Description
Brief Summary:
The Diabetes Prevention Trial of Type 1 (DPT-1) is a multicenter randomized, controlled clinical trial designed to determine whether it is possible to delay or prevent the clinical onset of type 1 diabetes through daily doses of insulin in individuals determined to be at risk for the disease. The parenteral insulin trial in DPT-1 has been completed, however, the oral insulin trial is still recruiting. Over 350 sites in the United States, Canada, and Puerto Rico are taking part in the study. Screening of patients is ongoing; approximately 100,000 nondiabetic relatives of persons with type 1 diabetes have been screened to detect the presence of islet cell antibodies. Those individuals found to have islet cell antibodies are being staged to determine their risk of diabetes based on genetic, immunologic, and metabolic characteristics. Those individuals found to be at intermediate risk of diabetes are randomized to receive insulin orally or to receive placebo. Patients are being followed for up to six years.

Condition or disease Intervention/treatment Phase
Diabetes Mellitus, Type 1 Drug: Crystallized human recombinant insulin Phase 3

Study Design

Study Type : Interventional  (Clinical Trial)
Allocation: Randomized
Masking: Double
Primary Purpose: Prevention
Study Start Date : February 1994
Estimated Study Completion Date : June 2003

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Diabetes Type 1
U.S. FDA Resources

Arms and Interventions

Outcome Measures

Eligibility Criteria

Information from the National Library of Medicine

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Ages Eligible for Study:   3 Years to 45 Years   (Child, Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Individuals 3-45 years old who have an immediate family member with type 1 diabetes (such as a child, parent, or sibling)
  • Individuals 3-20 years old who have an extended family member with type 1 diabetes (such as a cousin, niece, nephew, aunt, uncle, grandparent, or half-sibling)

Exclusion Criteria:

  • To be eligible, a person must:
  • Not have diabetes already.
  • Have no previous history of being treated with insulin or oral diabetes medications.
  • Have not received any prior therapy for prevention of type 1 diabetes such as insulin, nicotinamide, or immunosuppressive drugs (i.e. have not been involved in any previous clinical studies of these agents.)
  • Have no known serious diseases.
  • If you are a woman, you must not be planning to become pregnant during the course of the study. You will not be excluded from participation, but are not encouraged to volunteer in the first place if you plan to have a baby during the trial period).
Contacts and Locations

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00004984

United States, California
Childrens Hospital of Los Angeles, Division of Endocrinology
Los Angeles, California, United States, 90027
University of California-San Francisco, Milberry Union East RM 405, 500 Parnassus Ave Box 0136
San Francisco, California, United States, 94143
Stanford University
Stanford, California, United States, 94305-5208
United States, Colorado
University of Colorado Barbara Davis Center for Childhood Diabetes
Denver, Colorado, United States, 80262
United States, Florida
University of Florida Diabetes Research Center
Gainesville, Florida, United States, 32610-0296
DPT-1 Operations Coordinating Center
Miami, Florida, United States, 33136
University of Miami School of Medicine, Jackson Medical Tower
Miami, Florida, United States, 33136
United States, Indiana
Indiana University, James Whitcomb Riley Hospital for Children, 702 Barnhill Dr, Ste 5960
Indianapolis, Indiana, United States, 46202
United States, Massachusetts
Joslin Diabetes Center
Boston, Massachusetts, United States, 02215
United States, Minnesota
University of Minnesota
Minneapolis, Minnesota, United States, 55455
United States, New York
Naomi Berrie Diabetes Center, Columbia University, 1150 St. Nicholas Ave
New York, New York, United States, 10032
United States, Pennsylvania
Children's Hospital of Pittsburgh, Dept/Pediatric Endocrinology, 3705 5th Ave
Pittsburgh, Pennsylvania, United States, 15213
United States, Texas
University of Texas, Children's Medical Center, 6300 Harry Hines Ste 1200
Dallas, Texas, United States, 75235
United States, Washington
Virginia Mason Research Center, 1201 Ninth Avenue
Seattle, Washington, United States, 98101
Canada, Ontario
Hospital for Sick Children, Division of Endocrinology, 555 University Ave, Rm 5110
Toronto, Ontario, Canada, M5G-1X8
Sponsors and Collaborators
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
National Center for Research Resources (NCRR)
National Institute of Allergy and Infectious Diseases (NIAID)
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
National Institute on Minority Health and Health Disparities (NIMHD)
Office of Research on Women's Health (ORWH)
Study Chair: Jay S. Skyler, MD University of Miami
More Information

Additional Information:
Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
ClinicalTrials.gov Identifier: NCT00004984     History of Changes
Other Study ID Numbers: DPT-1 (completed)
First Posted: March 14, 2000    Key Record Dates
Last Update Posted: January 15, 2010
Last Verified: January 2010

Keywords provided by National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK):
C-peptide levels
insulin autoantibodies
pancreatic beta cell autoantibodies
cellular immune responses
prediction of type 1 diabetes

Additional relevant MeSH terms:
Diabetes Mellitus
Diabetes Mellitus, Type 1
Glucose Metabolism Disorders
Metabolic Diseases
Endocrine System Diseases
Autoimmune Diseases
Immune System Diseases
Insulin, Globin Zinc
Hypoglycemic Agents
Physiological Effects of Drugs
Immunologic Factors