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Folic Acid for Vascular Outcome Reduction In Transplantation (FAVORIT) (FAVORIT)

This study has been completed.
Sponsor:
ClinicalTrials.gov Identifier:
NCT00064753
First Posted: July 15, 2003
Last Update Posted: October 18, 2017
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.
Collaborator:
Office of Dietary Supplements (ODS)
Information provided by (Responsible Party):
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Results First Submitted: October 26, 2015  
Study Type: Interventional
Study Design: Allocation: Randomized;   Intervention Model: Parallel Assignment;   Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor);   Primary Purpose: Treatment
Conditions: Chronic Kidney Disease
Cardiovascular Disease
Death
Interventions: Drug: High Dose Multivitamin
Device: Low Dose Multivitamin

  Participant Flow
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Recruitment Details
Key information relevant to the recruitment process for the overall study, such as dates of the recruitment period and locations
Trial enrolled 4110 participants from August 2002 through January 2007 at 20 clinical sites in the US, Canada, and Brazil.

Pre-Assignment Details
Significant events and approaches for the overall study following participant enrollment, but prior to group assignment
No text entered.

Reporting Groups
  Description
High Dose Multivitamin

Multivitamin with increased folic acid, vitamin B6 and vitamin B12

High Dose Multivitamin: Vitamin B6 (Pyridoxine HCl): 50 mg Folic acid: 5.0 mg Vitamin B12: 1.0 mg Vitamin B1 (Thiamine HNO3): 1.5 mg Vitamin B2 (Riboflavin): 1.5 mg Vitamin C (Ascorbic Acid): 60 mg d-Biotin: 300 mcg Niacinamide: 20 mg Pantothenic Acid Calcium Pantothenate): 10 mg

Low Dose Multivitamin

Multivitamin devoid of folic acid and with estimated average requirement (EAR) amounts of vitamin B6 and vitamin B12

Low Dose Multivitamin: Vitamin B6 (Pyridoxine HCl): 1.4 mg Folic acid: 0.0 mg Vitamin B12: 2.0 mcg Vitamin B1 (Thiamine HNO3): 1.5 mg Vitamin B2 (Riboflavin): 1.5 mg Vitamin C (Ascorbic Acid): 60 mg d-Biotin: 300 mcg Niacinamide: 20 mg Pantothenic Acid Calcium Pantothenate): 10 mg


Participant Flow:   Overall Study
    High Dose Multivitamin   Low Dose Multivitamin
STARTED   2056   2054 
COMPLETED   1382   1406 
NOT COMPLETED   674   648 
Death                251                242 
Withdrawal by Subject                198                171 
Lost to Follow-up                225                235 



  Baseline Characteristics
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Population Description
Explanation of how the number of participants for analysis was determined. Includes whether analysis was per protocol, intention to treat, or another method. Also provides relevant details such as imputation technique, as appropriate.
7273 patients were screened, of whom 2056 and 2054 were randomized to high-dose and low-dose multivitamins, respectively; 34% did not meet eligibility cutpoints for tHey and Cer, and 9% were not enrolled for other reasons. Baseline characteristics were well balanced between treatment groups overall and within country.

Reporting Groups
  Description
High Dose Multivitamin

Multivitamin with increased folic acid, vitamin B6 and vitamin B12

High Dose Multivitamin: Vitamin B6 (Pyridoxine HCl): 50 mg Folic acid: 5.0 mg Vitamin B12: 1.0 mg Vitamin B1 (Thiamine HNO3): 1.5 mg Vitamin B2 (Riboflavin): 1.5 mg Vitamin C (Ascorbic Acid): 60 mg d-Biotin: 300 mcg Niacinamide: 20 mg Pantothenic Acid Calcium Pantothenate): 10 mg

Low Dose Multivitamin

Multivitamin devoid of folic acid and with EAR amounts of vitamin B6 and vitamin B12

Low Dose Multivitamin: Vitamin B6 (Pyridoxine HCl): 1.4 mg Folic acid: 0.0 mg Vitamin B12: 2.0 mcg Vitamin B1 (Thiamine HNO3): 1.5 mg Vitamin B2 (Riboflavin): 1.5 mg Vitamin C (Ascorbic Acid): 60 mg d-Biotin: 300 mcg Niacinamide: 20 mg Pantothenic Acid Calcium Pantothenate): 10 mg

Total Total of all reporting groups

Baseline Measures
   High Dose Multivitamin   Low Dose Multivitamin   Total 
Overall Participants Analyzed 
[Units: Participants]
 2056   2054   4110 
Age 
[Units: Years]
Mean (Standard Deviation)
 52  (9.4)   52  (9.5)   52  (9.4) 
Sex: Female, Male 
[Units: Participants]
Count of Participants
     
Female      767  37.3%      761  37.0%      1528  37.2% 
Male      1289  62.7%      1293  63.0%      2582  62.8% 
Region of Enrollment 
[Units: Participants]
     
Canada   249   249   498 
United States   1500   1500   3000 
Brazil   307   305   612 
Graft vintage 
[Units: Years]
Mean (Standard Deviation)
 6  (5.1)   5  (5.0)   5  (5.0) 
History of CVD 
[Units: Participants]
     
History of CVD   406   414   820 
No History of CVD   1650   1640   3290 
History of diabetes mellitus 
[Units: Participants]
     
History of diabetes mellitus   813   850   1663 
No history of diabetes mellitus   1243   1204   2447 
Prevalent hypertension 
[Units: Participants]
     
Prevalent hypertension   1879   1899   3778 
Non-prevalent hypertension   177   155   332 
Body mass index 
[Units: Kg/m^2]
Mean (Standard Deviation)
 29  (6.2)   29  (6.3)   29  (6.2) 
Current smoker 
[Units: Participants]
     
Current smoker   230   221   451 
Not current smoker   1826   1833   3659 
Total cholesterol 
[Units: mmol/L]
Mean (Standard Deviation)
 4.8  (1.2)   4.8  (1.1)   4.8  (1.1) 
High-density lipoprotein cholesterol 
[Units: mmol/L]
Mean (Standard Deviation)
 1.2  (0.4)   1.2  (0.4)   1.2  (0.4) 
Calculated or direct low-density lipoprotein cholesterol 
[Units: mmol/L]
Mean (Standard Deviation)
 2.6  (0.9)   2.6  (0.9)   2.6  (0.9) 
Triglycerides levels 
[Units: mmol/L]
Mean (Standard Deviation)
 2.3  (2.5)   2.2  (1.6)   2.2  (2.1) 


  Outcome Measures
  Show All Outcome Measures

1.  Primary:   Recurrent or de Novo Arteriosclerotic Cardiovascular Disease (CVD) Defined as the Occurrence of Non-fatal or Fatal Arteriosclerotic Outcomes Including Coronary Heart, Cerebrovascular, and Peripheral Vascular Disease Events   [ Time Frame: Up to 6 years (mean 4 years) ]

2.  Secondary:   Renal Graft Failure   [ Time Frame: Up to 6 years (mean 4 years) ]

3.  Secondary:   Mortality (All-cause)   [ Time Frame: Up to 6 years (mean 4 years) ]

4.  Secondary:   Fatal/Non-fatal Myocardial Infarction (MI)   [ Time Frame: Up to 6 years (mean 4 years) ]

5.  Secondary:   Fatal/Non-fatal Stroke   [ Time Frame: Up to 6 years (mean 4 years) ]

6.  Secondary:   Resuscitated Sudden Death (RSD)   [ Time Frame: Up to 6 years (mean 4 years) ]

7.  Secondary:   CVD Death   [ Time Frame: Up to 6 years (mean 4 years) ]

8.  Secondary:   Coronary Artery Revascularization   [ Time Frame: Up to 6 years (mean 4 years) ]

9.  Secondary:   Lower Extremity Peripheral Arterial Disease (PAD)   [ Time Frame: Up to 6 years (mean 4 years) ]

10.  Secondary:   Carotid Endarterectomy or Angioplasty   [ Time Frame: Up to 6 years (mean 4 years) ]

11.  Secondary:   Abdominal Aortic Aneurysm Repair   [ Time Frame: Up to 6 years (mean 4 years) ]

12.  Secondary:   Renal Artery Revascularization   [ Time Frame: Up to 6 years (mean 4 years) ]


  Serious Adverse Events


  Other Adverse Events


  Limitations and Caveats
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Limitations of the study, such as early termination leading to small numbers of participants analyzed and technical problems with measurement leading to unreliable or uninterpretable data
The B-vitamin pathway for reducing total homocysteine (tHcy) may not be the optimal one for reducing CVD risk. Also, the duration of follow-up may not have been sufficient to identify a lagged impact on modification of CVD risk.


  More Information
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Certain Agreements:  
Principal Investigators are NOT employed by the organization sponsoring the study.
There is NOT an agreement between Principal Investigators and the Sponsor (or its agents) that restricts the PI's rights to discuss or publish trial results after the trial is completed.


Results Point of Contact:  
Name/Title: Dr. Myra Carpenter
Organization: University of North Carolina at Chapel Hill
phone: 9199429408
e-mail: myra_carpenter@unc.edu


Publications of Results:
Other Publications:


Responsible Party: National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
ClinicalTrials.gov Identifier: NCT00064753     History of Changes
Other Study ID Numbers: FAVORIT dk61700 IND
U01DK061700 ( U.S. NIH Grant/Contract )
First Submitted: July 11, 2003
First Posted: July 15, 2003
Results First Submitted: October 26, 2015
Results First Posted: November 26, 2015
Last Update Posted: October 18, 2017