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Vitamin D3 for the Treatment of Low Vitamin D in Cystic Fibrosis

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. Identifier: NCT00762918
Recruitment Status : Withdrawn (Recruitment)
First Posted : September 30, 2008
Last Update Posted : February 22, 2010
Information provided by:
Children's Hospital of Philadelphia

Brief Summary:

Vitamin D deficiency is common in cystic fibrosis. Vitamin D deficiency frequently persists despite aggressive treatment with ergocalciferol, a vitamin D preparation also known as vitamin D2. Cholecalciferol, a vitamin D preparation also known as vitamin D3,may work better to increase vitamin D levels.

Vitamin D is important for absorption of calcium from the diet and bone health. Vitamin D more recently has been found to play a role in regulating the normal inflammatory process. Since cystic fibrosis is a state of excessive inflammation, vitamin D may be playing a role in cystic fibrosis.

We hypothesize: cholecalciferol will work better to increase vitamin D levels in patients iwth cystic fibrosis and that it will have an effect on markers of inflammation.

Condition or disease Intervention/treatment Phase
Cystic Fibrosis Vitamin D Deficiency Dietary Supplement: cholecalciferol Phase 3

Detailed Description:
Vitamin D deficiency is common in cystic fibrosis (CF) and persists despite relatively high doses of ergocalciferol, vitamin D2. Replacement has traditionally been focused upon maintenance of calcium and phosphorus homeostasis and bone health. However, non-classic roles of vitamin D have become increasingly recognized and the contribution of vitamin D deficiency to non-bone disorders has become apparent. Vitamin D deficiency has been associated with increased risk of a variety of cancers, autoimmune diseases such as Type 1 diabetes and multiple sclerosis, Type 2 diabetes, tuberculosis, and myopathy. The connection between vitamin D and these disease states likely reflects vitamin D's role as a transcriptional regulator: it participates in cell cycle regulation and in the innate immune system mediates cathelicidin production following activation of toll-like receptors.One hallmark of CF is pulmonary hyper-inflammation with recurrent infections. Additionally, malnutrition and decreased lean muscle mass threaten pulmonary function in CF. While vitamin D and its relation to bone has been explored in CF, the role of vitamin D in inflammation, lean body mass and strength, and pulmonary muscle strength has not been investigated. Moreover, vitamin D replacement has traditionally been with ergocalciferol, vitamin D2. Vitamin D3, cholecalciferol, has a longer half-life and is considered more potent. Thus, cholecalciferol treatment of children and young adults with CF and vitamin D deficiency may be useful for attaining normal vitamin D status and for exploring the impact of vitamin D upon lean body mass, pulmonary muscle strength, and inflammation.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 0 participants
Allocation: N/A
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Vitamin D and Its Non-Classic Roles in Cystic Fibrosis
Study Start Date : March 2008
Actual Primary Completion Date : September 2008
Estimated Study Completion Date : September 2008

Intervention Details:
  • Dietary Supplement: cholecalciferol
    cholecalciferol 5000 IU capsule by mouth daily for 3 months
    Other Name: Vitamin D3

Primary Outcome Measures :
  1. serum 25-hydroxy vitamin D levels [ Time Frame: 3 months ]

Secondary Outcome Measures :
  1. body composition [ Time Frame: 3 months ]
  2. inflammatory markers [ Time Frame: 3 months ]
  3. muscles strength [ Time Frame: 3 months ]

Information from the National Library of Medicine

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Ages Eligible for Study:   10 Years to 25 Years   (Child, Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  1. Subjects age 10-25 years
  2. cystic fibrosis
  3. 25-(OH)-D < 20 ng/mL
  4. FEV1 > 40% -

Exclusion Criteria:

  1. inability to perform pulmonary function or hand-grip tests
  2. liver disease (including cirrhosis and portal hypertension) or baseline liver enzymes 21/2-fold greater than the upper limit of normal
  3. acute use of glucocorticoids at time of testing
  4. acute pulmonary exacerbation at time of testing
  5. known non-adherence to enzyme replacement
  6. hypercalcemia
  7. engages in "suntanning

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00762918

Sponsors and Collaborators
Children's Hospital of Philadelphia
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Principal Investigator: Andrea Kelly, MD Children's Hospital of Philadelphia
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Responsible Party: Andrea Kelly, The Children's Hospital of Philadelphia Identifier: NCT00762918    
Other Study ID Numbers: 2007-12-5688
First Posted: September 30, 2008    Key Record Dates
Last Update Posted: February 22, 2010
Last Verified: February 2010
Keywords provided by Children's Hospital of Philadelphia:
cystic fibrosis
vitamin d
Additional relevant MeSH terms:
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Cystic Fibrosis
Vitamin D Deficiency
Pathologic Processes
Pancreatic Diseases
Digestive System Diseases
Lung Diseases
Respiratory Tract Diseases
Genetic Diseases, Inborn
Infant, Newborn, Diseases
Deficiency Diseases
Nutrition Disorders
Vitamin D
Growth Substances
Physiological Effects of Drugs
Bone Density Conservation Agents
Calcium-Regulating Hormones and Agents