Eosinophil Markers and Development of Disease in Allergic Rhinitis

Inflammatory proteins from eosinophil granulocytes in blood from patients with seasonal allergic hayfever have been shown to predict development of asthma at a six-year follow-up. This study is a 15-year follow-up of the same patients to verify earlier results and study disease development.

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Key information

Conditions

Seasonal Allergic Rhinitis Hypersensitivity Hypersensitivity, Immediate Immune System Diseases Nose Diseases Otorhinolaryngologic Diseases Respiratory Hypersensitivity Respiratory Tract Diseases Rhinitis Rhinitis, Allergic Rhinitis, Allergic, Seasonal

Sex eligibility

All sexes

Study type

Observational

About this study

The study consists of a single visit at which patients fill in a questionnaire on actual hayfever and asthma symptoms as well as current treatment. Blood samples and nasal lavages are drawn and analysed for eosinophils as well as eosinophil cationic protein and tryptase. Spirometry is performed.

If patients use drugs which can interfere with results, ie. corticosteroids or beta-agonists, biochemistry and/or spirometry are omitted.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

Participant in earlier study (1995)

Exclusion criteria

Treatment with any kind of corticosteroid within two months will exclude from study of inflammatory parameters

Treatment and study plan

Primary outcomes

Asthma morbidity

Time frame: Single measurement - May 2010

Patients are asked whether they have experienced asthmatic symptoms or have been disgnosed with asthma within the latest 15 years

Secondary outcomes

Rhinitis morbidity

Time frame: Single measurement - May 2010

Patients are asked for current hayfever symptoms

Interested in participating?

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Sponsors and collaborators

Lead sponsor

University of Aarhus

Other

Collaborators

Aarhus University Hospital

Registry information

Official study title

Eosinophil Markers and Development of Disease in Allergic Rhinitis. A 15-year Follow-up of Patients With Grass Pollen Induced Hayfever.

Important dates

Study start: 2010
Primary completion: 2010
Study completion: 2010
First posted: Sep 1, 2010
Registry last updated: Sep 1, 2010

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Published trials that share one or more normalized conditions with this study.

Completed