- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01292720
Vitamin D Supplementation in Chronic Stable Heart Failure (VITD-HI)
Vitamin D Supplementation in Chronic Stable Heart Failure: a Randomized, Double-blind, Placebo-controlled Trial
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
A growing body of data suggests that low vitamin D levels may adversely affect cardiovascular health. For many cardiovascular events, seasonal variability with peak incidence in the winter months is proven. This may be attributable at least in part to declining body stores of vitamin D beginning with September. Recently, there have been several case reports about severe cardiomyopathy caused by vitamin D deficiency, especially in dark-skinned children who had low vitamin D levels. The heart is an important target organ for vitamin D, both on a genomic and nongenomic level. Myocytes express the vitamin D receptor and several models of hypertension in animal studies have shown that vitamin D treatment is able to prevent cardiac hypertrophy [9-10]. Vitamin D seems to inhibit activation of the cardiac renin-angiotensin system as well as the expression of genes involved in the development of myocardial hypertrophy. There is accumulating evidence that vitamin D deficiency may be an important factor in the development of congestive heart failure and sudden cardiac death.
In chronic hemodialysis patients, vitamin D supplementation has been associated with reduction of cardiac hypertrophy and a reduction of QT dispersion, the latter being considered a major risk factor for sudden cardiac death. A small study from 1984 showed an improvement in left ventricular function after treatment with cholecalciferol in hemodialysis patients. A recent study from our group has reported a negative correlation of 25(OH)D levels with NT-pro-BNP levels, New York Heart Association functional classes and impaired left ventricular function. Furthermore, hazard ratios for death attributable to heart failure and sudden cardiac death were 2.84 and 5.05, respectively, when patients with 25(OH)D <25ng/ml were compared with those having serum levels of 25(OH)D >75 ng/ml [11]. The anti-inflammatory properties of vitamin D also appear to play a role in congestive heart failure, as studied in a recent interventional trial. In animal models, vitamin D deficiency was proven to be associated with developing myocardial hypertrophy and fibrosis with aberrant cardiac contractility and relaxation. Moreover, vitamin D deficiency can raise parathyroid hormone secretion, which in turn may increase insulin resistance and be associated with the development of diabetes, hypertension and inflammation. In summary, vitamin D seems to exert a multitude of different effects all working in concert to protect the vascular and cardiac system by influencing various hierarchical levels of biologic response.
Recently, a randomized controlled trial in a subgroup of patients with heart failure(n=105, ≥ 70 years) was able to demonstrate a significant decrease in BNP levels at 10 and 20 weeks, while the primary endpoint "functional capacity" and quality of life did not differ between intervention and placebo group.
Because in this latter trial, even the intervention group did not reach normal vitamin D levels, we will use a higher dose of vitamin D given in shorter intervals.
Study Type
Enrollment (Actual)
Phase
- Phase 3
Contacts and Locations
Study Locations
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-
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Graz, Austria, 8036
- Medical University of Graz
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-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Chronic stable heart failure (NYHA II-IV, ejection fraction ≤ 40%)
- ≥ 45 years
- 25 (OH) Vitamin D ≤ 30ng/ml
Exclusion Criteria:
- hypercalcemia (total serum calcium > 2.65 mmol/l OR ionized calcium > 1.35 mmol/l)
- nephro-/urolithiasis (≤1 year)
- known granulomatous diseases (active tuberculosis, sarcoidosis)
- pregnancy
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Quadruple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Vitamin D
|
Cholecalciferol 90,000 IU followed by weekly 24,000 IU for 24 weeks of vitamin D3 (total dose: 666,000 IU)
Other Names:
|
Placebo Comparator: Placebo
Placebo (herbal oil)
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Placebo in matching volumes
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
NT-pro BNP
Time Frame: month 0, 6
|
Change from Baseline in NT-pro BNP serum level at 6 months
|
month 0, 6
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Percentage of patients with 25(OH)D ≥ 30 ng/ml at month 6
Time Frame: 6 months
|
Percentage of patients with 25(OH)D ≥ 30 ng/ml at month 6
|
6 months
|
Serum calcium
Time Frame: month 0, 6
|
Serum calcium levels
|
month 0, 6
|
DXA
Time Frame: month 0,12
|
Dual energy X-ray absorptiometry including body composition at month 0 and 12 (alternatively month 6)
|
month 0,12
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Urinary calcium
Time Frame: month 0,6
|
Urinary calcium (spot urine)
|
month 0,6
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Karin Amrein, MD, Medical University of Graz
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- VITD-HI
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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