Stroke Clinical Trial - HOPE-2 Study (Heart Outcomes Prevention

Status Active, not recruiting

Clinical Trial Summary

The purpose of the HOPE-2 study is to determine whether long term supplementation with folic acid, vitamins B6 and B12 aimed at homocyst(e)ine reduction reduces the rates of major fatal and nonfatal cardiovascular events in patients with established cardiovascular disease and/or diabetes mellitus.

Clinical Trial Description

Cardiovascular disease (CVD) remains a major cause of mortality and morbidity in most developed countries and accounts for approximately 40% of all deaths in Canada. Reductions in cholesterol, lowering of blood pressure and smoking cessation have been shown to be effective strategies in cardiovascular prevention; however, these major "classical cardiovascular risk factors" along with nonmodifiable risk factors, cannot fully explain why certain individuals develop atherosclerotic cardiovascular diseases, while others do not. Other "emerging" cardiovascular risk factors are currently under investigation. There is a large body of consistent, biologically plausible evidence linking hyperhomocyst(e)inemia to cardiovascular risk and the association is graded. A simple, nontoxic therapeutic intervention in the form of multivitamins - folic acid and vitamins B6 and B12 - has been shown to be highly effective in reducing homocyst(e)ine levels, irrespective of the underlying cause. To date, however, there are no good clinical trials evaluating the efficacy of homocyst(e)ine-lowering therapies in reducing major cardiovascular events. The impact of this simple intervention on cardiovascular morbidity and mortality remains to be demonstrated.

Study Hypothesis: Evaluate if long-term therapy with folic acid and vitamins B6 and B12 compared to placebo reduces the risk of major fatal and nonfatal cardiovascular events.

Importance of the Study: The "homocyst(e)ine theory of atherosclerosis" remains an important unanswered question in cardiovascular medicine. If indeed a combination of multivitamins is found to be effective in reducing cardiovascular events, it is expected that this safe, inexpensive and easily administered therapy would be widely used world-wide. Therefore, the results of this trial could have a significant public health impact. ;

Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Double-Blind, Primary Purpose: Prevention

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT00106886
Study type	Interventional
Source	McMaster University
Contact
Status	Active, not recruiting
Phase	Phase 4
Start date	December 1999
Completion date	October 2005

View Details

See also
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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

HOPE-2 Study (Heart Outcomes Prevention Evaluation-2 Study)

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms