Six biologics put to the test in Real-World asthma and COPD care

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria Subjects must meet all of the following criteria: 1\. Age ≥ 18 years; 2. Confirmed diagnosis of at least one of the following chronic airway diseases: 1. Asthma: Diagnosed according to the 2025 GINA guidelines, with typical variable respiratory symptoms (wheeze, shortness of breath, chest tightness, or cough) and objective evidence of variable expiratory airflow limitation (positive bronchodilator reversibility test, positive bronchial provocation test, average daily PEF variability \>10%, improvement in lung function after ICS treatment, or significant variability in lung function between two visits). 2. Chronic Obstructive Pulmonary Disease (COPD): Diagnosed according to the 2026 GOLD guidelines, with symptoms of dyspnea, chronic cough, or sputum production, and/or history of exposure to risk factors, and post-bronchodilator FEV₁/FVC \< 70%. 3\. Meets clinical indications for biologic therapy as judged by a respiratory or allergy specialist according to current guidelines: 1. Asthma: Poor control despite optimized high-dose ICS-LABA therapy, presence of allergic or eosinophilic inflammatory biomarkers, or severe/refractory disease requiring maintenance oral corticosteroids (OCS). 2. COPD: Frequent exacerbations despite triple inhaled therapy (ICS + LABA + LAMA), with blood eosinophil count (EOS) ≥ 300/μL and chronic bronchitis phenotype. 4\. The treating respiratory or allergy specialist has decided to initiate or switch to one of the following approved biologics targeting Type 2 inflammation, based on 2025 GINA and 2026 GOLD guidelines: omalizumab, mepolizumab, benralizumab, dupilumab, tezepelumab, or depemokimab (tezepelumab may be used in both Type 2 and non-Type 2 inflammation). 5\. Able and willing to provide written informed consent and commit to at least 12 months of follow-up. Exclusion Criteria Subjects will be excluded if they meet any of the following criteria: 1. Presence of severe or uncontrolled pulmonary or systemic diseases (e.g., active malignancy, autoimmune disease) or active infectious respiratory diseases (e.g., active pulmonary tuberculosis or infectious pneumonia); 2. Pregnant, breastfeeding, or planning pregnancy during the study period; 3. Known history of hypersensitivity or allergy to any component of the planned biologic agent; 4. Expected life expectancy less than 12 months; 5. Any other condition that, in the investigator's judgment, makes the subject unsuitable for participation (e.g., poor compliance or inability to complete follow-up).