This is a real-world retrospective, multicentric, observational study, utilizing secondary data collection from medical records of adults patients (≥18 years) with severe asthma (maintenance treatment with high dose inhaled corticosteroids combined with long-acting agonist β2) and eosinophilic phenotype, who, at the discretion of the physician, received benralizumab accordingly to the clinical practice, in the period after the marketing authorization of benralizumab.
