# Factors Determining Tolerance to Nasal Allergen Exposure With Advanced Age in a Subset of Birch Pollen Allergic Subjects

> **NCT06459219** · — · NOT_YET_RECRUITING · sponsor: **Sven Schneider, MD** · enrollment: 152 (estimated)

## Conditions studied

- Allergic Rhinitis
- Allergic Conjunctivitis

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT06459219
- **Lead sponsor:** Sven Schneider, MD
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** NOT_YET_RECRUITING
- **Start date:** 2025-12-01
- **Primary completion:** 2027-10-01
- **Final completion:** 2028-10-01
- **Target enrollment:** 152 (ESTIMATED)
- **Last updated:** 2025-05-07


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT06459219

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT06459219, "Factors Determining Tolerance to Nasal Allergen Exposure With Advanced Age in a Subset of Birch Pollen Allergic Subjects". Retrieved via AI Analytics 2026-06-16 from https://api.ai-analytics.org/clinical/NCT06459219. Licensed CC0.

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