Try the modernized beta website. Learn more about the modernization effort.
Working… Menu

Coronary Drug Project

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: NCT00000482
Recruitment Status : Completed
First Posted : October 28, 1999
Last Update Posted : November 26, 2013
Information provided by:
National Heart, Lung, and Blood Institute (NHLBI)

Brief Summary:
To determine whether regular administration of lipid modifying drugs (clofibrate, nicotinic acid, estrogen, dextrothyroxine) to men with a documented myocardial infarction would result in significant reduction in total mortality over a five year period. Secondarily, to determine whether the degree to which these drugs changed serum lipids was correlated with any effect on mortality and morbidity rates; to gain further information on the long-term prognosis of myocardial infarction (by studying the control group as intensively as the treatment group); to acquire further experience and knowledge concerning the techniques and methodology of long-term clinical trials; to determine, in a substudy, the effectiveness of aspirin, a platelet inhibitor, in reducing recurrences of myocardial infarction.

Condition or disease Intervention/treatment Phase
Cardiovascular Diseases Coronary Disease Heart Diseases Myocardial Infarction Myocardial Ischemia Drug: estrogen Drug: clofibrate clofibrate Drug: dextrothyroxine sodium Drug: niacin Phase 3

Detailed Description:


Correlation of high levels of serum cholesterol with an increased incidence and prevalence of coronary heart disease (CHD) was demonstrated--prior to the inception of the Coronary Drug Project--repeatedly in prospective and cross-sectional epidemiological surveys (e.g., the Tecumseh Study, the Framingham Heart Disease Study). These findings led to the question of whether long-term lowering of serum lipids in individuals both with and without CHD would have a beneficial effect on morbidity and mortality.

The Coronary Drug Project was designed to answer the question of secondary prevention. In 1961, Dr. Robert Wilkins (Boston University School of Medicine) chaired an ad hoc committee which determined the desirability and feasibility of the conduct of this study. Following National Heart Advisory Council (NHAC) support, a study Policy Board, Steering Committee, and Coordinating Center were established and a detailed protocol was written.

In 1964, NHAC approved the project and the NHI recommendation for implementation; the study was begun in 1965. Supported by the grant mechanism, the trial involved 53 participating clinics, a coordinating center, central laboratory, ECG center, drug procurement and distribution center, and NHI medical liaison office, and a policy board, steering committee, and 12 other committees (e.g., a data and safety monitoring committee).

The first patient was randomly allocated to treatment in March 1966 and the last in October 1969. Each patient reported to the clinic every 4 months for a follow-up visit.


Randomized, double-blind, fixed sample. A total of 8,341 patients were randomly assigned to six treatment groups consisting of 2.5 mg/day of conjugated estrogens, 5.0 mg/day of conjugated estrogens, 1.8 gm/day of clofibrate, 6.0 mg/day of dextrothyroxine sodium, 3.0 gm/day of niacin, or 3.8 gm/day of lactose placebo.

The study completion date listed in this record was obtained from the Query/View/Report (QVR) System.

Layout table for study information
Study Type : Interventional  (Clinical Trial)
Allocation: Randomized
Masking: Double
Primary Purpose: Prevention
Study Start Date : April 1965
Actual Study Completion Date : March 1985

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Layout table for eligibility information
Ages Eligible for Study:   30 Years to 64 Years   (Adult)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   No
Men, ages 30-64. Three months beyond most recent myocardial infarction.

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): NCT00000482

Sponsors and Collaborators
National Heart, Lung, and Blood Institute (NHLBI)
Layout table for investigator information
OverallOfficial: Paul Canner University of Maryland
Coronary Drug Project Enters Enrollment Phase (Medical News). JAMA, 200:37-38, l967.
Parsons, W. Coronary Drug Project Deserves Support of Nation's Physicians. Cardiology Digest, January l967, pp. l3-l6.
Coronary Drug Project, Publication l695. National Heart Institute, Public Health Service, l968.
Coronary Drug Project Research Group: Control of Hyperlipidemia: 4. Progress in Drug Trials of Secondary Prevention with Particular Reference to the Coronary Drug Project, in Jones, R.J. (ed), Atherosclerosis (Proceedings of the Second International Symposium). New York, Springer-Verlag, l970, pp. 586-595.
Heart Drug Project Yields Good Results (Medical News). JAMA, 2l3:954-956, l970.
Coronary Drug Project Research Group: The Natural History of Myocardial Infarction in the Coronary Drug Project: Prognostic Indicators Following Infarction, in Tibblin, G., Keys, A., Werko, L. (eds), Preventive Cardiology, Stockholm, Almqvist & Wiksell, l972, pp. 54-64.
Coronary Drug Project Research Group: The Coronary Drug Project: A Secondary Prevention Trial, in Schettler, G. and Weizel, A. (eds), Atherosclerosis III. Berlin/New York, Springer-Verlag, l974, pp. 729-747.
Coronary Drug Project Research Group: Some Methodology for Relating Serial Observations to Mortality in Men with Coronary Heart Disease (Abstract). Am J Epidemiol, l00:529, l974.
Coronary Drug Project Research Group: Reply to Letter to the Editor from D.J. Gans. JAMA, 234:22-23, l975.

Publications automatically indexed to this study by Identifier (NCT Number):
Layout table for additonal information Identifier: NCT00000482    
Other Study ID Numbers: 1
R01HL008888-14 ( Other Grant/Funding Number: US NIH Grant Number )
First Posted: October 28, 1999    Key Record Dates
Last Update Posted: November 26, 2013
Last Verified: July 2004
Additional relevant MeSH terms:
Layout table for MeSH terms
Cardiovascular Diseases
Myocardial Infarction
Heart Diseases
Coronary Disease
Myocardial Ischemia
Pathologic Processes
Vascular Diseases
Hormones, Hormone Substitutes, and Hormone Antagonists
Physiological Effects of Drugs
Hypolipidemic Agents
Molecular Mechanisms of Pharmacological Action
Lipid Regulating Agents
Vasodilator Agents
Vitamin B Complex
Anticholesteremic Agents