# Trial of Antibody Responses by Vitamin Supplementation

> **NCT03859687** · PHASE1 · TERMINATED · sponsor: **St. Jude Children's Research Hospital** · enrollment: 22 (actual)

## Conditions studied

- Healthy Participants

## Interventions

- **BIOLOGICAL:** Vitamin A supplementation
- **BIOLOGICAL:** No vitamin A supplementation

## Key facts

- **NCT ID:** NCT03859687
- **Lead sponsor:** St. Jude Children's Research Hospital
- **Sponsor class:** OTHER
- **Phase:** PHASE1
- **Study type:** INTERVENTIONAL
- **Status:** TERMINATED
- **Start date:** 2019-08-19
- **Primary completion:** 2025-07-10
- **Final completion:** 2025-07-10
- **Target enrollment:** 22 (ACTUAL)
- **Why stopped:** Difficulty in starting recruitment
- **Last updated:** 2025-09-05

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03859687

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03859687, "Trial of Antibody Responses by Vitamin Supplementation". Retrieved via AI Analytics 2026-07-12 from https://api.ai-analytics.org/clinical/NCT03859687. Licensed CC0.

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