# Vitamin D, Steroids, and Asthma in African American Youth

> **NCT01647399** · — · COMPLETED · sponsor: **Robert J. Freishtat** · enrollment: 273 (actual)

## Conditions studied

- Asthma
- Allergy

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT01647399
- **Lead sponsor:** Robert J. Freishtat
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2012-07
- **Primary completion:** 2017-08
- **Final completion:** 2018-07
- **Target enrollment:** 273 (ACTUAL)
- **Last updated:** 2019-03-28


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01647399

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01647399, "Vitamin D, Steroids, and Asthma in African American Youth". Retrieved via AI Analytics 2026-05-26 from https://api.ai-analytics.org/clinical/NCT01647399. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*