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NCT04386811 · ClinicalTrials.gov registry record · Phase 1
Vitamin D as a Therapeutic Adjunct in the Stimulant Treatment of ADHD: a Proof-of-concept Tele-health Study of Stimulant-induced Improvement in Neurocognitive Functioning.
A Phase 1 study, sponsored by Yale University.
- Terminated
- Registry status
- Phase 1
- Development phase
- 3
- Enrollment target
NCT04386811: Clinical Trial Phase 1 study, sponsored by Yale University.
NCT04386811 is a Phase 1 study that was terminated before completion, run by Yale University. The registered enrollment target is 3 participants, below the 60-participant average among 29,502 other Phase 1 trials with a reported enrollment target (95% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT04386811, a Phase 1 study, was terminated before completion, sponsored by Yale University.
- TERMINATED
- Registry status
- Phase 1
- Development phase
- 3 participants
- Enrollment target
Study Summary
The purpose of this study is to assess vitamin D as a therapeutic adjunct in the stimulant treatment of ADHD.
Primary Outcome
On the Continuous Performance Task (CPT-IP) subjects are shown a random sequence of different numbers and are instructed to press a button as quickly and accurately as possible upon detection of two identical pairs of numbers, and to withhold their response to any other sequence of letters. Outcomes will be measured by d prime.
Interventions
- OTHER Placebo
- DRUG Calcitriol
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 3 participants |
| Start Date | 2020-08-05 |
| Est. Completion | 2020-09-29 |
| Phase | Phase 1 |
Why NCT04386811 stopped before completion
NCT04386811 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 3 participants, a relatively small participant target, below the 60-participant average among 29,502 other Phase 1 trials with a reported enrollment target (95% lower).
The record links to 0 conditions, and to 2 interventions - of which Placebo is the first listed.
NCT04386811 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT04386811 about?
NCT04386811 is a clinical study titled "Vitamin D as a Therapeutic Adjunct in the Stimulant Treatment of ADHD: a Proof-of-concept Tele-health Study of Stimulant-induced Improvement in Neurocognitive Functioning.". The purpose of this study is to assess vitamin D as a therapeutic adjunct in the stimulant treatment of ADHD.
What is the current status of trial NCT04386811?
This trial is currently terminated. It is a Phase 1 study. The enrollment target is 3 participants. The study started on 2020-08-05. Estimated completion is 2020-09-29.
What interventions are being tested in trial NCT04386811?
The interventions under investigation include: Placebo (OTHER), Calcitriol (DRUG).
Who is sponsoring clinical trial NCT04386811?
This trial is sponsored by Yale University, which has 1,492 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT04386811's enrollment target sits among peer trials
3 1999th of 2000 higher than 1 of 2,000 other Phase 1 trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other Phase 1 trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source ClinicalTrials.gov registry export · 2026-08-08
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