Vitamin D in OUD: Exploration of Alterations on the Dopamine D2/D3 Receptor System
Public ClinicalTrials.gov record NCT06261905. 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
Exploration of Baseline Alterations on the Dopamine D2/D3 Receptor System and the Effects of Vitamin D in Opioid Use Disorder: an [11C]-PHNO Study
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
The research team is investigating Opioid Use Disorder (OUD), a disorder characterized by dysregulated dopaminergic tone, to evaluate the mechanisms of adjunctive treatment with calcitriol. The investigators will recruit 12 subjects with OUD and 12 healthy subjects to participate in a double-blind, randomized study design where subjects will complete up to 2 Positron Emission Tomography (PET) scans using \[11C\]-PHNO. The investigators will compare subjects in differences between their own study days and in differences between healthy control subjects and subjects with OUD.
Study identification
- NCT ID
- NCT06261905
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 1
- Enrollment
- 5 participants
Conditions and interventions
Conditions
Interventions
- [11C]-PHNO Drug
- Calcitriol Dietary Supplement
- Placebo Control Other
- PET Scan Procedure
Drug · Dietary Supplement · Other + 1 more
Eligibility (public fields only)
- Age range
- 18 Years to 50 Years
- Sex
- All
- 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
- Mar 12, 2024
- Primary completion
- Feb 17, 2025
- Completion
- Feb 17, 2025
- Last update posted
- Nov 13, 2025
2024 – 2025
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Yale School of Medicine | New Haven | Connecticut | 06510 | — |
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 NCT06261905, 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 13, 2025 · Synced Sep 2, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT06261905 live on ClinicalTrials.gov.