Individualized Response to Vitamin D Treatment Study
Public ClinicalTrials.gov record NCT02925195. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
Multi Ethnic Study of Atherosclerosis Individualized Response to Vitamin D Treatment Study
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
The goal of this clinical trial is to determine individual-level genetic and metabolic characteristics that modify the response to cholecalciferol treatment. This study is double blind, parallel design, randomized clinical trial that will assess genetic and metabolic characteristics that modify the response to cholecalciferol treatment. . Eligible participants will be randomly assigned to receive cholecalciferol treatment (2,000 international units of cholecalciferol daily by mouth) or placebo in a 3:1 ratio for a total duration of 16-weeks. The planned sample size is 1,600. The primary aim of this study is to identify genetic polymorphisms, clinical characteristics, and biomarkers that modify the biologic response to vitamin D3 treatment, assessed by changes in serum concentrations of parathyroid hormone (PTH) and 1,25(OH)2D and urine calcium excretion.
Study identification
- NCT ID
- NCT02925195
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Not applicable
- Enrollment
- 666 participants
Conditions and interventions
Eligibility (public fields only)
- Age range
- 18 Years and older
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Jan 10, 2017
- Primary completion
- Nov 29, 2021
- Completion
- Mar 3, 2022
- Last update posted
- Nov 1, 2023
2017 – 2022
United States locations
- U.S. sites
- 5
- U.S. states
- 5
- U.S. cities
- 5
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| University of California, Los Angeles | Los Angeles | California | — | — |
| Northwestern University | Evanston | Illinois | — | — |
| John Hopkins University | Baltimore | Maryland | — | — |
| Columbia Univeristy | New York | New York | — | — |
| Wake Forest University | Winston-Salem | North Carolina | — | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT02925195, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Nov 1, 2023 · Synced Sep 2, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT02925195 live on ClinicalTrials.gov.