Related Experiment Video
Updated: Jul 27, 2025

Bronchial Thermoplasty: A Novel Therapeutic Approach to Severe Asthma
Published on: November 4, 2010
Switching Biological Therapies in Severe Asthma
Giulia Scioscia1, Santi Nolasco2,3, Raffaele Campisi2
1Department of Medical and Surgical Sciences, University of Foggia, 71121 Foggia, Italy.
Switching biologic therapies for severe asthma can be effective, especially for patients with high eosinophil counts. Treatment choice should consider patient history, biomarkers like blood eosinophils, and comorbidities such as nasal polyposis.
Area of Science:
- Pulmonology
- Immunology
- Pharmacology
Background:
- Three classes of monoclonal antibodies (anti-IgE, anti-IL-5/IL-5Rα, anti-IL-4Rα) are approved for severe asthma in Italy.
- Randomized controlled trials and real-life studies assess efficacy and predictive factors for these biologics.
- Switching biologics is a strategy for patients with suboptimal response.
Purpose of the Study:
- To review current knowledge on switching biological therapies in severe asthma.
- To identify predictors of treatment response or failure after switching biologics.
- To summarize real-world evidence on biologic switching.
Main Methods:
- Review of real-life studies and randomized controlled trials on biologic switching in severe asthma.
- Analysis of patient characteristics associated with treatment response or failure.
- Synthesis of data regarding predictors of efficacy for different monoclonal antibodies.
Main Results:
- Most switching data originates from real-life studies.
- Omalizumab was frequently the initial biologic therapy.
- Patients switched due to suboptimal control often had higher baseline blood eosinophil counts and exacerbation rates, and were dependent on oral corticosteroids (OCS).
Conclusions:
- Switching biologics is a viable option for severe asthma patients with inadequate response.
- Patient's clinical history, biomarkers (blood eosinophils, FeNO), and comorbidities (nasal polyposis) can guide treatment selection.
- Further research is needed to characterize patient profiles benefiting from switching to different monoclonal antibodies due to overlapping indications.
Related Concept Videos
Asthma-IV: Diagnostic and Management
Clinical Assessment for Asthma:
This is the first step in diagnosing and managing asthma. It includes:
Antiasthma Drugs: Leukotriene Modifiers
Leukotriene modifiers work through two distinct mechanisms:
Antiasthma Drugs: Mast Cell Stabilizers and Anti-IgE Drugs
Mast cell stabilizers, such as cromolyn (also known as sodium cromoglycate) and nedocromil (Tilade), are effective drugs in asthma management. These stabilizers hinder histamine release by skillfully obstructing the activation of mast cells and other cellular entities. Notably, they navigate this task without...
Antiasthma Drugs: β2-Adrenoceptor Agonists
One class of bronchodilators includes β2-adrenoceptor agonists. These agents target the β2-adrenoceptors located on bronchial smooth muscle cells. By stimulating these receptors, β2-agonists induce...
Antiasthma Drugs: Inhaled Corticosteroids and Glucocorticoids
ICS work through a multifaceted mechanism of action. They suppress the inflammatory response caused by the proliferation of TH cells. They also reduce the transcription of the IL-2 gene, which is involved in the...
Asthma: Pathogenesis and Management
Asthma is classified as allergic and non-allergic. Allergens such as dust mites, pollen, and pet dander trigger allergic asthma, while factors like cold air, intense emotions, or exercise can induce non-allergic asthma.

