Vitamin D for Enhancing the Immune System in Cystic Fibrosis (DISC Study) (DISC)
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ClinicalTrials.gov Identifier: NCT01426256 |
Recruitment Status :
Completed
First Posted : August 31, 2011
Last Update Posted : July 13, 2017
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Sponsor:
Emory University
Collaborator:
Cystic Fibrosis Foundation
Information provided by (Responsible Party):
Vin Tangpricha, MD, PH.D, Emory University
Tracking Information | ||||
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First Submitted Date ICMJE | August 29, 2011 | |||
First Posted Date ICMJE | August 31, 2011 | |||
Last Update Posted Date | July 13, 2017 | |||
Study Start Date ICMJE | October 2011 | |||
Actual Primary Completion Date | April 2017 (Final data collection date for primary outcome measure) | |||
Current Primary Outcome Measures ICMJE |
Study enrollment to next pulmonary exacerbation requiring any antibiotics, hospitalization or death. [ Time Frame: 12 months ] | |||
Original Primary Outcome Measures ICMJE |
The composite measure of deaths and re-hospitalizations after randomization [ Time Frame: 12 months ] | |||
Change History | ||||
Current Secondary Outcome Measures ICMJE |
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Original Secondary Outcome Measures ICMJE |
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Current Other Pre-specified Outcome Measures | Not Provided | |||
Original Other Pre-specified Outcome Measures | Not Provided | |||
Descriptive Information | ||||
Brief Title ICMJE | Vitamin D for Enhancing the Immune System in Cystic Fibrosis (DISC Study) | |||
Official Title ICMJE | Vitamin D for Enhancing the Immune System in Cystic Fibrosis | |||
Brief Summary | The purpose of this study is determine if high-dose vitamin D supplementation improves clinical outcomes related to lung function and immunity in patients with Cystic Fibrosis who are admitted to the hospital with an acute lung infection. | |||
Detailed Description | Patients with Cystic Fibrosis (CF) have a shorter life span than the general population due to complications with lung infections, which eventually progress to lung failure. New research has suggested that high levels of vitamin D may be protective against lung infections and may promote the action of anti-bacterial proteins needed to ward off infections. Research has also suggested that high vitamin D levels are linked to lower mortality rates; however these hypotheses have not been adequately studied in patients with CF. An investigation of the effects of vitamin D supplementation is of particular interest in this population because patients with CF generally have high rates of vitamin D deficiency. The investigators have preliminary data from a previous study suggesting that vitamin D supplementation in patients with CF lowers markers of inflammation, promotes anti-bacterial proteins, and reduces mortality. In this proposed multi-center study the investigators will examine the effects of a high dose vitamin D supplementation on patients with CF who are admitted to the hospital for lung infection. The investigators will use a randomized, placebo-controlled trial design to determine if mortality and infection rates over 1 year are reduced in patients who receive the high-dose vitamin D supplementation compared to those who receive placebo. The investigators will also determine if vitamin D affects markers of inflammation and anti-bacterial proteins, as well as CF-related clinical outcomes, such as lung function. The investigators plan to recruit 280 adults and adolescents with CF (ages > 16yrs), with approximately 150 subjects recruited at Emory (Emory University Hospital and Children's Healthcare of Atlanta). Participants will initially be seen by the study researchers during the first week of in-patient hospitalization, and they will be followed over the course of one year during their regularly-scheduled out-patient CF clinic visits. The treatment group will receive an initial oral bolus dose of 250,000 IU vitamin D, and at 3 months follow-up they will receive 50,000 IU vitamin D every other week. Current CF Guidelines for vitamin D supplementation recommend a daily intake of 800 IU of vitamin D per day, therefore in addition to the vitamin D or placebo they receive at the beginning of the study and at 3 months, all participants will receive 800 IU of vitamin D daily. If our hypotheses are correct, this study has potential for reducing infection and promoting survival in patients with CF using vitamin D, a relatively inexpensive supplement. | |||
Study Type ICMJE | Interventional | |||
Study Phase ICMJE | Phase 3 | |||
Study Design ICMJE | Allocation: Randomized Intervention Model: Parallel Assignment Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor) Primary Purpose: Treatment |
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Condition ICMJE |
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Intervention ICMJE | Dietary Supplement: Cholecalciferol
Bolus dose of 250,000 IU during hospitalization + maintenance dose of 50,000 IU vitamin D every other week to be initiated 3 months after bolus dose
Other Name: Vitamin D
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Study Arms ICMJE |
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Publications * |
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* Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline. |
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Recruitment Information | ||||
Recruitment Status ICMJE | Completed | |||
Actual Enrollment ICMJE |
91 | |||
Original Estimated Enrollment ICMJE |
280 | |||
Actual Study Completion Date ICMJE | July 2017 | |||
Actual Primary Completion Date | April 2017 (Final data collection date for primary outcome measure) | |||
Eligibility Criteria ICMJE | Inclusion Criteria:
Exclusion Criteria:
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Sex/Gender ICMJE |
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Ages ICMJE | 16 Years and older (Child, Adult, Older Adult) | |||
Accepts Healthy Volunteers ICMJE | No | |||
Contacts ICMJE | Contact information is only displayed when the study is recruiting subjects | |||
Listed Location Countries ICMJE | United States | |||
Removed Location Countries | ||||
Administrative Information | ||||
NCT Number ICMJE | NCT01426256 | |||
Other Study ID Numbers ICMJE | IRB00052829 TANGOR11A0 ( Other Identifier: Other ) |
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Has Data Monitoring Committee | Yes | |||
U.S. FDA-regulated Product | Not Provided | |||
IPD Sharing Statement ICMJE | Not Provided | |||
Current Responsible Party | Vin Tangpricha, MD, PH.D, Emory University | |||
Original Responsible Party | Emory University | |||
Current Study Sponsor ICMJE | Emory University | |||
Original Study Sponsor ICMJE | Same as current | |||
Collaborators ICMJE | Cystic Fibrosis Foundation | |||
Investigators ICMJE |
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PRS Account | Emory University | |||
Verification Date | July 2017 | |||
ICMJE Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP |