Journal List > Allergy Asthma Respir Dis > v.7(1) > 1125516

Kim and Lee: Biologic agents for asthma treatment

Abstract

Most treatment strategies for asthma currently include inhaled corticosteroids, with the addition of long-acting beta-2-agonists or leukotriene modifiers, if necessary. However, some patients may not respond to conventional treatment. A better understanding of the pathophysiology of asthma has recently led to the development of biological agents, which have shown promising results for symptom control and future risk reduction in severe asthmatics. This article reviews currently available biologic agents, introduces related studies, and describes the subgroup of patients benefitting from each of biologic agents in the view point of precision medicine.

References

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Table 1.
Biologic therapies for severe asthma9,60
FDA approved          
Drug Mechanism of action Approval Dose & route Potential biomarkers Effect
Omalizumab Blocks IgE interaction with Fcε RI Ages 6 and older 150–375 mg subcutaneous (SC) every 2–4 wk; frequency based on IgE and body weight Elevated IgE. Patients with higher FeNO and blood eosinophils >300 cells/μL Decrease asthma exacerbations
Mepolizumab IL-5 antagonist Ages 12 and older 100 mg SC every 4 wk Peripheral eosinophil count of >150 cells/μL or 300 cells/μL Decrease in asthma exacerbations improvement in prepostbronchodilator FEV1
Reslizumab IL-5 antagonist Ages 18 and older 3 mg/kg IV every 4 wk Peripheral eosinophil count of >400 cells/μL Decrease in asthma exacerbations and improvement in FEV1
Benralizumab IL-5 receptor α antagonists Ages 12 and older 20–100 mg every 4–8 wk Elevated peripheral blood eosinophil count Decreased asthma exacerbations and in small study used in ER visit setting administration contributed to a 50% drop in exacerbation over 12 wk
Dupilumab Inhibits IL-13 and IL-4 by targeting IL-4 α, a common receptor domain for both cytokines Ages 12 and older 200 mg SC every 2 wk or 300 mg SC every 4 wk Peripheral eosinophil count of >300 cells/μL or sputum >3% Decrease in asthma exacerbations and improvement in FEV1
In clinical trials          
Tralokinumab IL-13 antagonist Phase 2b trials NA Elevated periostin and DDP-4 Decreased in asthma exacerbations and improvement in FEV1
Pitrakinra Blocking IL-4 receptor α Phase 2b trials NA Peripheral eosinophil count of >300 cells/μL Elevated FeNO IL-4 receptor rs8832 SNP GG genotype Decreased in asthma exacerbations

FDA, U.S. Food and Drug Administration; FeNO, Fractional exhaled nitric oxide; IL, interleukin; ER, emergency room; FEV1, forced expiratory volume in 1 second; NA, not applicable.

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