Vitamin D Supplementation in Veterans With Early-Stage Prostate Cancer
Public ClinicalTrials.gov record NCT00953225. 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.
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
Vitamin D promotes the differentiation of prostate cancer cells, maintains the differentiated phenotype of prostate epithelial cells, and can induce prostate cancer cell death, raising the possibility that vitamin D deficiency over time promotes the progression of subclinical prostate cancer to clinical disease. The investigators propose to conduct a clinical study aimed at measuring the efficacy of vitamin D3 (4000IU/day) supplementation in Veterans diagnosed with low-risk, early-stage prostate cancer, who elect to have their disease monitored through active surveillance. The successful completion of this proposed clinical study will allow us to determine whether correcting vitamin D deficiency in Veterans diagnosed with early-stage prostate cancer will prevent progression of their disease and improve their prognosis.
Study identification
- NCT ID
- NCT00953225
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 2
- Enrollment
- 83 participants
Conditions and interventions
Conditions
Eligibility (public fields only)
- Age range
- 19 Years to 85 Years
- Sex
- Male
- 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 6, 2010
- Primary completion
- Dec 14, 2013
- Completion
- Oct 29, 2014
- Last update posted
- Oct 8, 2017
2010 – 2014
United States locations
- U.S. sites
- 2
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Ralph H. Johnson VA Medical Center, Charleston, SC | Charleston | South Carolina | 29401-5799 | — |
| Medical University of South Carolina | Charleston | South Carolina | 29425 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
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About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT00953225, 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 Oct 8, 2017 · Synced Sep 7, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT00953225 live on ClinicalTrials.gov.