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Homocysteine Lowering and Atherosclerosis Reduction Trial (HART)

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: NCT00217178
Recruitment Status : Unknown
Verified October 2004 by McMaster University.
Recruitment status was:  Active, not recruiting
First Posted : September 22, 2005
Last Update Posted : September 22, 2005
Canadian Institutes of Health Research (CIHR)
Population Health Research Institute
Information provided by:
McMaster University

Tracking Information
First Submitted Date  ICMJE September 16, 2005
First Posted Date  ICMJE September 22, 2005
Last Update Posted Date September 22, 2005
Study Start Date  ICMJE January 2000
Primary Completion Date Not Provided
Current Primary Outcome Measures  ICMJE
 (submitted: September 16, 2005)
The change over time (annualized progression slope) in the mean maximum IMT (the mean maximum IMT slope) defined as the average of the maximum IMT across the 12 preselected carotid arterial segments.
Original Primary Outcome Measures  ICMJE Same as current
Change History No Changes Posted
Current Secondary Outcome Measures  ICMJE
 (submitted: September 16, 2005)
The change over time (annualized progression slope) in the single maximum IMT amongst any of the same preselected carotid artery segments, i.e. the hemodynamically most important lesson.
Original Secondary Outcome Measures  ICMJE Same as current
Current Other Pre-specified Outcome Measures Not Provided
Original Other Pre-specified Outcome Measures Not Provided
Descriptive Information
Brief Title  ICMJE Homocysteine Lowering and Atherosclerosis Reduction Trial (HART)
Official Title  ICMJE Homocysteine Lowering and Atherosclerosis Reduction Trial (HART)
Brief Summary

Study Objective:

1. To evaluate whether combined therapy with folic acid 2.5 mg/day, vitamin B6 50 mg/day and vitamin B12 1000 micrograms/day vs placebo reduces the rate of atherosclerosis progression, as evaluated by quantitative B-mode carotid ultrasound (US).

Detailed Description The HART study is designed as a substudy of the Heart Outcomes Prevention Evaluation-2 (HOPE-2)trial which evaluates the effect of combined therapy ? folic acid and vitamin B6 and B12 on clinical events. The study is designed to enrol 900 study participants randomized to homocysteine lowering therapies or placebo. Follow-up will estimate over 5 years. Study participants will undergo yearly carotid B-Mode ultrasound examinations.
Study Type  ICMJE Interventional
Study Phase  ICMJE Phase 4
Study Design  ICMJE Allocation: Randomized
Intervention Model: Factorial Assignment
Masking: Double
Primary Purpose: Prevention
Condition  ICMJE
  • Atherosclerosis
  • Cardiovascular Disease
Intervention  ICMJE Drug: Vitamins: Folic acid, B6, B12
Study Arms  ICMJE Not Provided
Publications * Held C, Sumner G, Sheridan P, McQueen M, Smith S, Dagenais G, Yusuf S, Lonn E. Correlations between plasma homocysteine and folate concentrations and carotid atherosclerosis in high-risk individuals: baseline data from the Homocysteine and Atherosclerosis Reduction Trial (HART). Vasc Med. 2008 Nov;13(4):245-53. doi: 10.1177/1358863X08092102.

*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
Recruitment Information
Recruitment Status  ICMJE Unknown status
Enrollment  ICMJE
 (submitted: September 16, 2005)
Original Enrollment  ICMJE Same as current
Study Completion Date  ICMJE October 2005
Primary Completion Date Not Provided
Eligibility Criteria  ICMJE

Inclusion Criteria:Women and Men aged ≥ 55 years at high risk for CV events with: (a) Documented (CAD): i) History of prior MI; ii) stable or unstable angina with documented multivessel CAD or strongly positive stress test; iii) Multivessel CAD and PTCA ≥ 6 months prior to randomization; iv) multivessel CABG ≥ 4 years prior to randomization; v) Multivessel CAD on angiography; (b) Documented peripheral vascular disease (PVD): i) Previous limp bypass surgery and/or previous peripheral percutaneous transluminal angioplasty and/or previous limp or foot amputation due to PVD.ii) History of intermittent claudication with ankle/arm blood pressure ratio of ≤ 0.80 or with significant arterial stenosis on angiography; (c) Documented cerebrovascular disease: i) History of previous ischemic stroke; and (d) Diabetes mellitus with ≥ 1 additional major CV risk factor(s). (2) Provision of informed consent.(3) Adequate baseline carotid US examination.

Exclusion Criteria:1. Current use of folic acid supplements > 200 mg/day. 2. Known previous adverse reactions to folic acid, Vitamin B6 or B12. 3. Planned cardiac, peripheral or cerebrovascular.


Sex/Gender  ICMJE
Sexes Eligible for Study: All
Ages  ICMJE 55 Years and older   (Adult, Older Adult)
Accepts Healthy Volunteers  ICMJE No
Contacts  ICMJE Contact information is only displayed when the study is recruiting subjects
Listed Location Countries  ICMJE Canada
Removed Location Countries  
Administrative Information
NCT Number  ICMJE NCT00217178
Other Study ID Numbers  ICMJE HART, CIHR Grant # MCT 44159
CIHR, MCT 44159
Has Data Monitoring Committee Not Provided
U.S. FDA-regulated Product Not Provided
IPD Sharing Statement  ICMJE Not Provided
Responsible Party Not Provided
Study Sponsor  ICMJE Hamilton Health Sciences Corporation
Collaborators  ICMJE
  • Canadian Institutes of Health Research (CIHR)
  • Population Health Research Institute
Investigators  ICMJE
Principal Investigator: Eva M Lonn, MD MSc FRCPC FACC McMaster University
PRS Account McMaster University
Verification Date October 2004

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