The International Severe Asthma Registry is a global initiative looking to ensure that the care of people with severe asthma will continue to improve by collecting detailed information about the health and treatment of as many people with the disease as possible. The study will gather anonymized longitudinal real-life data for participants with severe asthma for five years. The purpose of the registry is to track the progress of participants and determine how well they are responding to treatment. Medical research using data from the registry will give the investigators a better understanding of severe asthma and help the investigators develop and improve the care and treatment for severe asthma participants. The Canadian cohort of the registry will collect information from Canadian participants with severe asthma across seven different sites.
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AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Blood eosinophil counts
Timeframe: Past 12 months
Blood Immunoglobulin E (IgE) counts
Timeframe: Past 12 months
Fractional exhaled nitric oxide level
Timeframe: Past 12 months
Start and end dates of oral corticosteroid medication
Timeframe: Prior to baseline visit
Asthma Control
Timeframe: Past 4 weeks
Start and end dates of biologic medications such as anti-interleukin-5, anti-immunoglobulin E, or anti-interleukin-4 treatments (if relevant)
Timeframe: Prior to baseline visit
Reason for switching biologic medication (if relevant)
Timeframe: Past 12 months
Start and end dates of all asthma related inhaled medications
Timeframe: Prior to baseline visit
Number of asthma exacerbations requiring rescue steroids
Timeframe: Past 12 months
Number of emergency room visits for asthma
Timeframe: Past 12 months
Number of hospital admissions for asthma
Timeframe: Past 12 months
Spirometry test results for Forced Vital Capacity (FVC)
Timeframe: Past 12 months
Spirometry test results for Forced Expiratory Volume in One Second (FEV1)
Timeframe: Past 12 months