# Phenotyping and Classifying Asthma Exacerbations

> **NCT05304039** · — · ACTIVE_NOT_RECRUITING · sponsor: **Franciscus Gasthuis** · enrollment: 200 (estimated)

## Conditions studied

- Asthma Attack

## Interventions

- **BEHAVIORAL:** Questionnaires
- **DEVICE:** Spirometry
- **DEVICE:** Fractional Exhaled Nitric Oxide (FeNO)
- **DEVICE:** Corsano watch
- **DEVICE:** e-Nose
- **PROCEDURE:** Nasopharyngeal swabs and nasal lining fluid
- **DEVICE:** Sputum culture
- **PROCEDURE:** Blood sample

## Key facts

- **NCT ID:** NCT05304039
- **Lead sponsor:** Franciscus Gasthuis
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** ACTIVE_NOT_RECRUITING
- **Start date:** 2022-09-28
- **Primary completion:** 2025-03-31
- **Final completion:** 2025-12
- **Target enrollment:** 200 (ESTIMATED)
- **Last updated:** 2025-08-21

## Collaborators

- [object Object]
- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT05304039

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT05304039, "Phenotyping and Classifying Asthma Exacerbations". Retrieved via AI Analytics 2026-09-26 from https://api.ai-analytics.org/clinical/NCT05304039. Licensed CC0.

---

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