NCT04322838Completed
Tromsø Birch Rust Allergy Study. Allergy to Birch Rust, a Possible Explanation to Seasonal Airway Allergy During Autumn?
Tromsø Birch Rust Allergy Study. Allergy to Birch Rust Fungi, a Possible Explanation to Seasonal Airway Allergy During Autumn? A Pilot Study With 30 Patients With Suspected Allergy to Birch Rust and 15 Non-allergic Controls.
Source: ClinicalTrials.gov · Last updated 17 Jun 2026
Brief summary (registry, in English)
In this project we study if spores from birch rust fungi (Melampsoridium Betulinum = MB) may be the eliciting allergen in patients with seasonal airway allergy during autumn in North Norway. Patients with suspected allergy to MB are compared with non-allergic controls using data about allergic disease and daily allergic symptoms during autumn. Daily spread of MB spores are compared with daily variations in allergic symptoms. Sensitization to MB and MB allergy are tested with skin prick test, specific immunoglobulin E (IgE) in serum, nasal provocation test and basophil activation test (BAT).
- Status (registry)
- Completed
- Study type
- Observational
- Enrollment
- 48 (actual)
- First submitted
- 24 Mar 2020
- Start date
- 1 Aug 2020
- Primary completion date
- 16 Jun 2026
- Lead sponsor
- University Hospital of North Norway
- Diseases
- Asthma
- NCT number
- NCT04322838
What you commit to
- Study type: Observational
- Participants enrolled: 48
- From 1 Aug 2020 to the primary completion date, 16 Jun 2026
- 1 site in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study design.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Other illness
- Perennial airway allergic symptoms without worsening during autumn
Who the study is looking for
- Self reported seasonal airway allergic symptoms during autumn
Age in the registry: 18 years to 75 years · Sex: All · Does not accept healthy volunteers
Sites (1)
Sites in registry order. Save your city in your profile to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| University Hospital of North Norway Coordinator of this site? Confirm its status | Tromsø | Norway | Unknown status |
This page is information, not medical advice. Discuss any trial with your doctor.