Effect of Vitamin D Supplementation on Bone Turnover Markers During PrEP in MSM
Public ClinicalTrials.gov record NCT02367599. 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
Effect of Vitamin D Supplementation on Bone Turnover Markers During Tenofovir-Emtricitibine Pre-Exposure Prophylaxis in Men Who Have Sex With Men; A Sub-study of CCTG 595
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
CCTG 595 is an open-label clinical trial of the effect of a text messaging intervention vs. standard of care on adherence to Truvada as PrEP in MSM at increased risk for HIV infection (ClinicalTrials.gov Identifier: NCT01761643). Eligible subjects for this matched case control substudy will receive vitamin D 4000 IU/day for 24 weeks, from week 24 through week 48. In CCTG 595, plasma from participants are being collected and stored at entry and every 12 weeks. These plasma samples will be used to measure P1NP, CTX, PTH, and vitamin D levels in both cases and controls at entry, week 24, and week 48.
Study identification
- NCT ID
- NCT02367599
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 4
- Enrollment
- 48 participants
Conditions and interventions
Conditions
Eligibility (public fields only)
- Age range
- 18 Years and older
- Sex
- Male
- Healthy volunteers
- Accepts healthy volunteers
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Dec 14, 2014
- Primary completion
- Jun 12, 2018
- Completion
- Jul 10, 2018
- Last update posted
- Jul 1, 2020
2014 – 2018
United States locations
- U.S. sites
- 3
- U.S. states
- 1
- U.S. cities
- 3
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| University Southern California | Los Angeles | California | 90033 | — |
| University of California, San Diego | San Diego | California | 92103 | — |
| Harbor-UCLA Medical Center | Torrance | California | 90502 | — |
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 NCT02367599, 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 Jul 1, 2020 · Synced Sep 8, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT02367599 live on ClinicalTrials.gov.