# PURETHAL Birch RUSH Study

> **NCT01918956** · PHASE4 · COMPLETED · sponsor: **HAL Allergy** · enrollment: 120 (estimated)

## Conditions studied

- Allergic Rhinitis
- Allergic Rhinoconjunctivitis

## Interventions

- **BIOLOGICAL:** PURETHAL Birch, 20.000 AUM/ml

## Key facts

- **NCT ID:** NCT01918956
- **Lead sponsor:** HAL Allergy
- **Sponsor class:** INDUSTRY
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2013-09
- **Primary completion:** 2014-02
- **Final completion:** 2014-04
- **Target enrollment:** 120 (ESTIMATED)
- **Last updated:** 2014-04-11

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01918956

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01918956, "PURETHAL Birch RUSH Study". Retrieved via AI Analytics 2026-06-23 from https://api.ai-analytics.org/clinical/NCT01918956. Licensed CC0.

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