- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01696409
The Effect Of Vitamin D On Measures Of Bone Health And Gene Expression
The Effect of Vitamin D on Measures of Bone Health and Gene Expression
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Study Type
Enrollment (Actual)
Contacts and Locations
Study Locations
-
-
Massachusetts
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Boston, Massachusetts, United States, 02118
- Boston Medical Center
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- Male and female adults of all races ages 18 years and older
Exclusion Criteria:
1. Pregnant and lactating women.
2. Current or recent history of hepatic or renal disease
3. History of taking a daily supplement that contains more than 400 IU vitamin D2 or vitamin D3 within the past month or taking a pharmacologic amount of vitamin D2 or one of the active vitamin D analogs including Zemplar (Paricalcitol), Dovonex (calcipotriol), Hectorol (vitamin D pro hormone)
4. Subjects who are taking antiseizure medications or glucocorticoids.
5. Exposure to a tanning bed or tanning on a beach for more than eight hours within the past month.
6. Known history of elevated calcium. (> 10.5 mg% (mg/dl))
7. History of intestinal malabsorption (i.e. Cystic Fibrosis, Fat Malabsorption Syndrome, Crohn's Disease)
8. Unwilling to consent to this trial
Study Plan
How is the study designed?
Design Details
- Observational Models: Cohort
- Time Perspectives: Prospective
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
Arm A
400 IU vitamin D3 once a day for 2 months
|
Take 400 IU once/day for 2 months
|
Arm B
2000 IU Vitamin D3 once/day for 2 months
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2000 IU vitamin D3 once/day for 2 months
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Gene Expression
Time Frame: Baseline and Final Visits
|
Measurement of mRNA levels from genes specific to bone, calcium, and non-skeletal functions.
|
Baseline and Final Visits
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Michael F Holick, PhD, MD, BUMC
Publications and helpful links
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 (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- Vitamin D and Gene Expression
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
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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