Vitamin D DeficiencyNCT01244204
Role of Vitamin D in Innate Immunity to Tuberculosis
A study testing Vitamin D in people with Vitamin D Deficiency and Tuberculosis, run by Harvard School of Public Health (HSPH).
Trial summary
The investigators proposed a pilot study preparatory to developing a randomized trial of vitamin D for the prevention of TB infection. The specific aims are presented below: 1. To recruit subjects, obtain consent, distribute vitamin D supplements to the children in the schools, obtain blood samples and transport them… Read more about this study
- Who is it for?
- Ages 10 to 18 yearsHealthy volunteers can take part
- Conditions the study is for
- Vitamin D Deficiency, Tuberculosis
- What is being tested?
- Vitamin D
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 120 participants
- Where
- No sites listed yet
- Study dates
- Nov 2009to Mar 2011
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 10 to 18 years
- All sexes
- Healthy volunteers accepted
- Child, Adult
Who may be able to join
- Eligible subjects will be children age 12 to 15 years inclusive in public school, located in Songino-Khairhan district, who are residents of Ulaanbaatar, and whose parents have given informed consent and who accent to participate in the study.
Who cannot join
- Individuals with pre-existing calcium, parathyroid conditions, or type I diabetes, sarcoidosis, or who require chronic diuretic therapy including calcium channel blockers, or who are cognitively impaired.
About this study
Official title: Vitamin D Supplementations as Adjunct to Anti-tuberculosis Drugs in Mongolia
The investigators proposed a pilot study preparatory to developing a randomized trial of vitamin D for the prevention of TB infection. The specific aims are presented below:
- To recruit subjects, obtain consent, distribute vitamin D supplements to the children in the schools, obtain blood samples and transport them to the United States.
- To test the hypothesis that daily vitamin D supplementation will increase plasma levels of 25(OH)D, and restore TLR-induced antimicrobial activity in monocytes/macrophages tested in vitro.
- Conditions
- Vitamin D Deficiency, Tuberculosis
- Being tested
- Vitamin D, Placebo
- Keywords
- vitamin D deficiency, tuberculin sin test, immunity, tuberculosis
- Medical subject headings
- Vitamin D Deficiency, Tuberculosis
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Vitamin DDietary supplement
Daily dose of 800IU of vitamin D
PlaceboDietary supplement
Identically appearing capsules
| Study group | Role | What they receive |
|---|---|---|
| Vitamin D | Experimental | Not described Receives: Dietary Supplement: Vitamin D |
| Placebo | Placebo comparator | Not described Receives: Dietary Supplement: Placebo |
What is being measured
The primary outcome is the main question the study is designed to answer.
Serum vitamin D levels
Measured: 6 months
Tuberculin Skin Test conversion
Measured: 6 monhs
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted19 Nov 2010 (estimated)
- Study startNov 2009
- Primary completionMay 2010
- Study completionMar 2011
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (2)Papers the sponsor has linked to this study.
- Other trials for Vitamin D DeficiencyStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Triple blind
- Who is masked
- Participant, Care provider, Investigator
- Enrolment
- 120 participants (actual)
Sponsor and investigators
- Lead sponsor
- Harvard School of Public Health (HSPH)
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Ganmaa Davaasambuu, Harvard School of Public Health (HSPH)
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01244204
- Sponsor's protocol ID
- 1K99HL089710-01A1
- Status last verified
- Aug 2012
- First submitted
- 15 Nov 2010
- Last updated
- 3 Aug 2012
- Results posted
- No
- Data monitoring committee
- No
Publications
Yegorov S, Bromage S, Boldbaatar N, Ganmaa D. Effects of Vitamin D Supplementation and Seasonality on Circulating Cytokines in Adolescents: Analysis of Data From a Feasibility Trial in Mongolia. Front Nutr. 2019 Oct 23;6:166. doi: 10.3389/fnut.2019.00166. eCollection 2019.
PubMed 31709259Ganmaa D, Giovannucci E, Bloom BR, Fawzi W, Burr W, Batbaatar D, Sumberzul N, Holick MF, Willett WC. Vitamin D, tuberculin skin test conversion, and latent tuberculosis in Mongolian school-age children: a randomized, double-blind, placebo-controlled feasibility trial. Am J Clin Nutr. 2012 Aug;96(2):391-6. doi: 10.3945/ajcn.112.034967. Epub 2012 Jul 3.
PubMed 22760564
Study at a glance
From the registry record, last updated by the sponsor on 3 Aug 2012. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Vitamin D Supplementations as Adjunct to Anti-tuberculosis Drugs in Mongolia
- ClinicalTrials.gov ID
- NCT01244204
- Acronym / sponsor ID
- 1K99HL089710-01A1
- Conditions
- Vitamin D Deficiency, Tuberculosis
- Keywords
- vitamin D deficiency, tuberculin sin test, immunity, tuberculosis
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 120 participants (actual)
- Lead sponsor
- Harvard School of Public Health (HSPH)University, hospital or other
- Study start
- Nov 2009
- Primary completion
- May 2010 (actual)
- Study completion
- Mar 2011 (actual)
- First posted
- 19 Nov 2010 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The investigators proposed a pilot study preparatory to developing a randomized trial of vitamin D for the prevention of TB infection. The specific aims are presented below:
- To recruit subjects, obtain consent, distribute vitamin D supplements to the children in the schools, obtain blood samples and transport them to the United States.
- To test the hypothesis that daily vitamin D supplementation will increase plasma levels of 25(OH)D, and restore TLR-induced antimicrobial activity in monocytes/macrophages tested in vitro.
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Triple blind (participant, care provider, investigator)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Vitamin D | Experimental | Dietary Supplement: Vitamin D |
| Placebo | Placebo comparator | Dietary Supplement: Placebo |
Who may qualify
- Ages
- 10 to 18 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult
Key inclusion criteria (1 listed)
- Eligible subjects will be children age 12 to 15 years inclusive in public school, located in Songino-Khairhan district, who are residents of Ulaanbaatar, and whose parents have given informed consent and who accent to participate in the study.
Key exclusion criteria (1 listed)
- Individuals with pre-existing calcium, parathyroid conditions, or type I diabetes, sarcoidosis, or who require chronic diuretic therapy including calcium channel blockers, or who are cognitively impaired.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Vitamin DDaily dose of 800IU of vitamin D | Dietary supplement | Vitamin D |
| PlaceboIdentically appearing capsules | Dietary supplement | Placebo |
Primary outcome
Serum vitamin D levels
Time frame: 6 months
Tuberculin Skin Test conversion
Time frame: 6 monhs
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 3 Aug 2012.
- Derived from this study: PubMed 31709259Yegorov S, Bromage S, Boldbaatar N, Ganmaa D. Effects of Vitamin D Supplementation and Seasonality on Circulating Cytokines in Adolescents: Analysis of Data From a Feasibility Trial in Mongolia. Front Nutr. 2019 Oct 23;6:166. doi: 10.3389/fnut.2019.00166. eCollection 2019.
- Derived from this study: PubMed 22760564Ganmaa D, Giovannucci E, Bloom BR, Fawzi W, Burr W, Batbaatar D, Sumberzul N, Holick MF, Willett WC. Vitamin D, tuberculin skin test conversion, and latent tuberculosis in Mongolian school-age children: a randomized, double-blind, placebo-controlled feasibility trial. Am J Clin Nutr. 2012 Aug;96(2):391-6. doi: 10.3945/ajcn.112.034967. Epub 2012 Jul 3.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
Questions about this trial
What is this clinical trial studying?
A study testing Vitamin D in people with Vitamin D Deficiency and Tuberculosis, run by Harvard School of Public Health (HSPH).
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 3 Aug 2012. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Serum vitamin D levels (time frame: 6 months). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT01244204, which also lists 2 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 3 Aug 2012.