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Diabetes Control and Complications Trial (DCCT)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00360815
Recruitment Status : Completed
First Posted : August 7, 2006
Last Update Posted : March 2, 2010
Information provided by:
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

Brief Summary:

Background. Long-term microvascular and neurologic complications cause major morbidity and mortality in patients with insulin-dependent diabetes mellitus (IDDM). We examined whether intensive treatment with the goal of maintaining blood glucose concentrations close to the normal range could decrease the frequency and severity of these complications.

Methods. A total of 1441 patients with IDDM -- 726 with no retinopathy at base line (the primary-prevention cohort) and 715 with mild retinopathy (the secondary-intervention cohort) were randomly assigned to intensive therapy administered either with an external insulin pump or by three or more daily insulin injections and guided by frequent blood glucose monitoring or to conventional therapy with one or two daily insulin injections. The patients were followed for a mean of 6.5 years, and the appearance and progression of retinopathy and other complications were assessed regularly.

Condition or disease Intervention/treatment Phase
Type 1 Diabetes Mellitus Behavioral: Insulin Not Applicable

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Study Type : Interventional  (Clinical Trial)
Enrollment : 1441 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Diabetes Control and Complications Trial (DCCT)
Study Start Date : August 1983
Study Completion Date : April 1993

Resource links provided by the National Library of Medicine

Drug Information available for: Insulin

Information from the National Library of Medicine

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Ages Eligible for Study:   13 Years to 39 Years   (Child, Adult)
Sexes Eligible for Study:   All

Eligibility Criteria:

  • The major criteria for eligibility included insulin dependence, as evidenced by deficient C-peptide secretion; an age of 13 to 39 years; and the absence of hypertension, hypercholesterolemia, and severe diabetic complications or medical conditions. To be eligible for the primary-prevention cohort, patients were required to have had insulin dependent diabetes mellitus (IDDM) for one to five years, to have no retinopathy as detected by seven-field stereoscopic fundus photography, and to have urinary albumin excretion of less than 40 mg per 24 hours. To be eligible for the secondary-intervention cohort, the patients were required to have IDDM for 1 to 15 years, to have very-mild to moderate nonproliferative retinopathy, and to have urinary albumin excretion of less than 200 mg per 24 hours.

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 identifier (NCT number): NCT00360815

  Hide Study Locations
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United States, California
University of California
La Jolla, California, United States, 92093-0620
United States, Connecticut
Yale University School of Medicine
New Haven, Connecticut, United States, 06510
United States, Florida
University of South Florida College of Medicine
Tampa, Florida, United States, 33612
United States, Illinois
Northwestern University
Chicago, Illinois, United States, 60611
DCCT Central Autonomic Coding Unit
Springfield, Illinois, United States, 62702
United States, Iowa
University of Iowa
Iowa City, Iowa, United States, 52242
United States, Maryland
University of Maryland
Baltimore, Maryland, United States, 21201
George Washington University, Biostatistics Center
Rockville, Maryland, United States, 20852
United States, Massachusetts
Massachusetts General Hospital
Boston, Massachusetts, United States, 02114
Joslin Diabetes Center, Inc.
Boston, Massachusetts, United States, 02215
United States, Michigan
University of Michigan, Sattelite-Henry Ford Hospital
Ann Arbor, Michigan, United States, 48109-0832
Henry Ford Hospital
Detroit, Michigan, United States, 48202
United States, Minnesota
International Diabetes Center
Minneapolis, Minnesota, United States, 55416
DCCT Central Nutrition Coding Unit
Minneapolis, Minnesota, United States, 55454-1015
DCCT Central ECG Reading Unit
Minneapolis, Minnesota, United States, 55455-1015
DCCT Central Biochemistry Laboratory
Minneapolis, Minnesota, United States, 55455-9980
University of Minnesota
Minneapolis, Minnesota, United States, 55455
Mayo Foundation
Rochester, Minnesota, United States, 55905
United States, Missouri
Backup DCCT Central HbA1c Lab
Columbia, Missouri, United States, 65201
University of Missouri
Columbia, Missouri, United States, 65212
Washington University at St. Louis
St. Louis, Missouri, United States, 63110
United States, New Mexico
University of New Mexico School of Medicine
Albuquerque, New Mexico, United States, 87131
United States, New York
Albert Einstein College of Medicine
Bronx, New York, United States, 10461
Cornell University Medical College, The New York Hospital
New York, New York, United States, 10021
United States, Ohio
Case Western Reserve University, Lakeside Hospital
Cleveland, Ohio, United States, 44106
United States, Pennsylvania
University of Pennsylvania, The Children's Hospital of Philadelphia
Philadelphia, Pennsylvania, United States, 19104
University of Pittsburgh, Children's Hospital
Pittsburgh, Pennsylvania, United States, 15213-3417
DCCT Central Neurobehavioral Coding Unit
Pittsburgh, Pennsylvania, United States, 15213
United States, South Carolina
Medical University of South Carolina
Charleston, South Carolina, United States, 29403-5851
United States, Tennessee
University of Tennessee
Memphis, Tennessee, United States, 38163
Vanderbilt University, Diabetes Research and Training Center
Nashville, Tennessee, United States, 37212
Vanderbilt University
Nashville, Tennessee, United States, 37232-2230
United States, Texas
University of Texas
Dallas, Texas, United States, 75235
United States, Washington
University of Washington
Seattle, Washington, United States, 98195
United States, Wisconsin
DCCT Central Ophthalmologic Reading Unit, Fundus Photo Reading Center
Madison, Wisconsin, United States, 53705-0240
Canada, British Columbia
University of Washington (British Columbia Satellite)
Vancouver, British Columbia, Canada, V5Z 3N9
Canada, Ontario
University of Western Ontario
London, Ontario, Canada, N6A 5A5
University of Toronto, Mount Sinai Hospital
Toronto, Ontario, Canada, M5G 1X5
Sponsors and Collaborators
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
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Study Chair: Oscar B. Crofford, M.D. Vanderbilt University
Study Director: Carolyn Siebert, M.P.H. National Institutes of Health: National Institute of Diabetes and Digestive and Kidney Diseases
Principal Investigator: Patricia A. Cleary, M.S. George Washington University

Publications automatically indexed to this study by Identifier (NCT Number):

Layout table for additonal information Identifier: NCT00360815     History of Changes
Other Study ID Numbers: N01-DK-6-2204-A (completed)
First Posted: August 7, 2006    Key Record Dates
Last Update Posted: March 2, 2010
Last Verified: March 2010
Additional relevant MeSH terms:
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Diabetes Mellitus
Diabetes Mellitus, Type 1
Glucose Metabolism Disorders
Metabolic Diseases
Endocrine System Diseases
Autoimmune Diseases
Immune System Diseases
Hypoglycemic Agents
Physiological Effects of Drugs