Trial
NCT02687815
Vitamin D to Prevent Severe Asthma Exacerbations (Vit-D-Kids Asthma)
Phase IITERMINATEDEFFICACY/FUTILITYConfidence: HIGH
Sponsor
Juan Celedon, MD
Collaborators
Pharmavite LLC; National Heart, Lung, and Blood Institute (NHLBI)
Condition
Asthma
Intervention
vitamin D3 4000 IU
Why stopped
Futility of vitamin D supplementation based on protocol threshold: \<30% conditional power to detect pre-specified effect- 16% reduction in severe exacerbations.
Provenance
Dataset: 2026-07-02 • Source: ClinicalTrials.gov API v2 • Last update: 2021-08-12