# The Role of the Nasal Allergen Provocation Test in Starting and Monitoring Allergen Immunotherapy

> **NCT04544774** · — · RECRUITING · sponsor: **Universitaire Ziekenhuizen KU Leuven** · enrollment: 200 (estimated)

## Conditions studied

- Perennial Allergic Rhinitis
- Seasonal Allergic Rhinitis
- Local Allergic Rhinitis

## Interventions

- **DRUG:** AIT
- **DIAGNOSTIC_TEST:** NAPT

## Key facts

- **NCT ID:** NCT04544774
- **Lead sponsor:** Universitaire Ziekenhuizen KU Leuven
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** RECRUITING
- **Start date:** 2020-07-16
- **Primary completion:** 2026-12
- **Final completion:** 2026-12
- **Target enrollment:** 200 (ESTIMATED)
- **Last updated:** 2026-05-01

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04544774

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04544774, "The Role of the Nasal Allergen Provocation Test in Starting and Monitoring Allergen Immunotherapy". Retrieved via AI Analytics 2026-05-24 from https://api.ai-analytics.org/clinical/NCT04544774. Licensed CC0.

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