- ICH GCP
- US Clinical Trials Registry
- Klinisk forsøg NCT01230307
Vitamin D Supplementation for Treatment of Heart Failure (DELIGHTFUL)
D suppLementation In HearT FaiLure (DELIGHTFUL)
Studieoversigt
Status
Betingelser
Intervention / Behandling
Detaljeret beskrivelse
Primary Objective To determine how rapid vitamin D supplementation affects biomarkers and submaximal exercise capacity in systolic HF patients with low vitamin D status.
Working Hypothesis 1: HF patients when supplemented with vitamin D for 6 months will have lower measures of inflammation and extracellular-matrix remodeling compared with placebo.
Working Hypothesis 2: HF patients when supplemented with vitamin D for 6 months will have longer 6-minute walk length compared with placebo.
Secondary Objectives To establish a relationship between the CYP2R1 variant and surrogate markers in systolic HF patients.
Working Hypothesis 3: HF patients with the CYP2R1 G allele will have higher measures of inflammation and extracellular-matrix remodeling compared to AA subjects. This relationship will also be seen in subjects with the CYP2R1 TagSNP variants.
Working Hypothesis 4: HF patients with CYP2R1 variant alleles will have shorter 6-minute walk length compared to subjects without these variants.
To genotype HF subjects for the VDR variants and additional tag SNPs, to ascertain the relationship between VDR genetic variation and surrogate markers in systolic HF patients.
Working Hypothesis 5: HF patients with VDR variants will have greater measures of inflammation and extracellular-matrix remodeling compared to subjects without VDR variants.
Working Hypothesis 6: HF patients with VDR variants will have a shorter 6-minute walk length compared to subjects without these variants.
Undersøgelsestype
Tilmelding (Faktiske)
Fase
- Fase 4
Kontakter og lokationer
Studiesteder
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Michigan
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Ann Arbor, Michigan, Forenede Stater, 48109
- University of Michigan Medical Center
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-
Deltagelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- HF patients with LV systolic dysfunction of ischemic or non-ischemic origin and an LVEF <40% using nuclear ventriculography or echocardiography within the last 6 months.
- Attempts should have been made at optimizing medical therapy and the participant should be stable on these medications for at least 3 months.
- Patients with a 25(OH)D level between 10-25 ng/ml
Exclusion Criteria:
- Inability to give informed consent
- Patients with sarcoidosis or other granulomatous disease that can alter vitamin D metabolism
- Patients with primary valvular HF, hypertrophic cardiomyopathy, and drug-induced HF
- Renal dysfunction defined as serum creatinine > 2.5 mg/dl
- Pregnant women
- Patients <18 years of age
- Patients on vitamin D supplementation
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Dobbelt
Våben og indgreb
Deltagergruppe / Arm |
Intervention / Behandling |
|---|---|
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Aktiv komparator: Vitamin D
Vitamin D supplementation will be an oral load of 100,000 IU then 2000 IU by mouth daily of vitamin D3 (cholecalciferol)for 6 months
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Vitamin D supplementation will be an oral load of 100,000 IU then 2000 IU by mouth daily of vitamin D3 (cholecalciferol)for 6 months
Andre navne:
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Placebo komparator: Placebo
A placebo loading dose will be given followed by two placebo tablets daily for 6 months.
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A placebo loading dose will be given followed by 2 placebo tablets daily for 6 months.
Andre navne:
|
Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Biomarkers
Tidsramme: 6 months
|
Biomarkers - C-reactive protein (CRP), interleukin-6 (IL-6), tumor necrosis factor-a (TNF-a), propeptide procollagen type I, plasma procollagen III, matrix metalloproteinase 2 (MMP-2), MMP-9 and tissue inhibitor of matrix metalloproteinases-1 (TIMP-1).
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6 months
|
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Exercise Capacity Measured by 6 Minute Walk Test
Tidsramme: 6 months
|
6 months
|
|
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Quality of Life Measured by Kansas City Cardiomyopathy Questionnaire
Tidsramme: 6 months
|
Kansas City Cardiomyopathy Questionnaire for quality of life is measured on a scale of 0 - 100, with 100 being best.
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6 months
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Vitamin D Genomics
Tidsramme: Baseline
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Genotyped for the restricted fragment length polymorphism at the BsmI site.
In addition CYP2R1, CYP27B1, CYP24 will also be genotyped.
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Baseline
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Samarbejdspartnere og efterforskere
Sponsor
Efterforskere
- Ledende efterforsker: Barry E. Bleske, Pharm. D., University of Michigan
Datoer for undersøgelser
Studer store datoer
Studiestart
Primær færdiggørelse (Faktiske)
Studieafslutning (Faktiske)
Datoer for studieregistrering
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Skøn)
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- VitD3
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