BVAIT: B-Vitamin Atherosclerosis Intervention Trial

This study has been completed.
Leiner Health Products
Information provided by:
National Institute on Aging (NIA) Identifier:
First received: June 14, 2005
Last updated: December 9, 2009
Last verified: February 2007
The purpose of this study is to examine whether vitamin B supplementation will reduce the progression of early atherosclerosis in individuals over 40 years old and without clinical evidence of cardiovascular disease (CVD).

Condition Intervention Phase
Drug: folic acid
Drug: vitamin B12
Drug: vitamin B6
Phase 2
Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double-Blind
Primary Purpose: Treatment
Official Title: B-Vitamin Atherosclerosis Intervention Trial (BVAIT)

Resource links provided by NLM:

Further study details as provided by National Institute on Aging (NIA):

Primary Outcome Measures:
  • rate of change of distal common carotid artery (CCA) far wall intima-media thickness (IMT)

Secondary Outcome Measures:
  • change in coronary and abdominal aortic calcification
  • neurocognitive change

Estimated Enrollment: 506
Study Start Date: November 2000
Study Completion Date: February 2007
Primary Completion Date: February 2007 (Final data collection date for primary outcome measure)
Detailed Description:

The primary hypothesis to be tested is that daily vitamin B supplementation reduces progression of early atherosclerosis. Ultrasonography will be used to measure the rate of change in the thickness of the carotid artery and CT will be used to measure coronary and aortic calcium. The beneficial effects of vitamin B supplementation are expected to occur with or without a change in LDL-C levels.

A total of 506 men and women will be randomized to receive either 1) vitamin B supplementation consisting of folic acid 5mg, vitamin B12 0.4mg, and vitamin B6 50mg, or 2) a matching placebo. Participants will receive ultrasonography at baseline and every 6 months for 2.5 to 4.5 years, and CT scan at baseline and end of study (2.5 to 4.5 years).


Ages Eligible for Study:   40 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Male or female (postmenopausal)
  • 40 years or older
  • Fasting plasma homocysteine 8.5 micromoles per liter (µmol/L) or greater

Exclusion Criteria:

  • Any clinical signs or symptoms of cardiovascular disease (CVD)
  • Diabetes mellitus or fasting serum glucose 140 mg/dL or greater
  • Triglyceride (TG) levels 500mg/dL or greater
  • Serum creatinine greater than 1.6 mg/dL
  • Uncontrolled hypertension (systolic blood pressure 160 mmHg or greater and/or diastolic blood pressure 100 mmHg or greater)
  • Thyroid disease (untreated)
  • Life threatening disease with prognosis less than 5 years
  • Alcohol intake greater than 5 drinks per day (1 drink = 1 1/2 oz distilled spirits, 4 oz wine, or 12 oz beer) or substance abuse (intravenous drug use, cocaine use)
  Contacts and Locations
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, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00114400

United States, California
Atherosclerosis Research Unit, Division of Cardiovascular Medicine, Department of Medicine
Los Angeles, California, United States, 90033
Sponsors and Collaborators
National Institute on Aging (NIA)
Leiner Health Products
Principal Investigator: Howard N. Hodis, MD University of Southern California, Atherosclerosis Research Unit, Division of Cardiovascular Medicine, Department of Medicine
  More Information

No publications provided by National Institute on Aging (NIA)

Additional publications automatically indexed to this study by Identifier (NCT Number): Identifier: NCT00114400     History of Changes
Other Study ID Numbers: AG0024, R01AG017160
Study First Received: June 14, 2005
Last Updated: December 9, 2009
Health Authority: United States: Federal Government

Keywords provided by National Institute on Aging (NIA):
cardiovascular disease

Additional relevant MeSH terms:
Arterial Occlusive Diseases
Cardiovascular Diseases
Vascular Diseases
Vitamin B 12
Vitamin B Complex
Growth Substances
Pharmacologic Actions
Physiological Effects of Drugs processed this record on November 27, 2015