Severe asthma
Conditions
Interventions
None listed
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: A. Severe asthma group Satisfy any of 1-5 below 1. Oral steroid use for the treatment of asthma exacerbation during the past one year 2. FEV1 %predicted is below 60% at the stable state 3. Regular oral steroid use >50% of the past one year 4. High dose inhaled corticosteroid use (600 mcg or more of fluticasone or equivalent) 5. Diagnosed as severe asthma by physician B. Mild to moderate asthma None of 1-5 above Sex and gender are matched with severe asthma group
Exclusion criteria
Exclusion criteria: 1. diffuse lung lesion confirmed by plain chest X-ray film 2. uncontrollable malignancy
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Clinical data include exacerbating factor, pulmonary functions, chest images, QOL, responses to the treatments, and biomarkers (cytokines, lipid mediators, cell functions, genetic polymorphisms) in biosamples peripheral blood cells, urine, sputum, exhaled air, exhaled air condensate, and tissue specimens will be determined. | — |
Countries
Japan
Contacts
Keio University School of Medicine Division of pulmonary medicine