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Saglani S, Yates L, Lloyd CM. Immunoregulation of asthma by type 2 cytokine therapies: Treatments for all ages? Eur J Immunol 2023; 53:e2249919. [PMID: 36932669 DOI: 10.1002/eji.202249919] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 03/08/2023] [Accepted: 03/10/2023] [Indexed: 03/19/2023]
Abstract
Asthma is classically considered to be a disease of type 2 immune dysfunction, since many patients exhibit the consequences of excess secretion of cytokines such as IL-4, IL-5, and IL-13 concomitant with inflammation typified by eosinophils. Mouse and human disease models have determined that many of the canonical pathophysiologic features of asthma may be caused by these disordered type 2 immune pathways. As such considerable efforts have been made to develop specific drugs targeting key cytokines. There are currently available multiple biologic agents that successfully reduce the functions of IL-4, IL-5, and IL-13 in patients, and many improve the course of severe asthma. However, none are curative and do not always minimize the key features of disease, such as airway hyperresponsiveness. Here, we review the current therapeutic landscape targeting type 2 immune cytokines and discuss evidence of efficacy and limitations of their use in adults and children with asthma.
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Affiliation(s)
- Sejal Saglani
- National Heart and Lung Institute, Imperial College London, London, UK
- Royal Brompton and Harefield Hospitals, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Laura Yates
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Clare M Lloyd
- National Heart and Lung Institute, Imperial College London, London, UK
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Quint JK, Arnetorp S, Kocks JWH, Kupczyk M, Nuevo J, Plaza V, Cabrera C, Raherison-Semjen C, Walker B, Penz E, Gilbert I, Lugogo NL, van der Valk RJP. Short-Acting Beta-2-Agonist Exposure and Severe Asthma Exacerbations: SABINA Findings From Europe and North America. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY. IN PRACTICE 2022; 10:2297-2309.e10. [PMID: 35364341 DOI: 10.1016/j.jaip.2022.02.047] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 02/04/2022] [Accepted: 02/23/2022] [Indexed: 10/18/2022]
Abstract
BACKGROUND Expert national/global asthma management recommendations raise the issue whether a safe threshold of short-acting beta-2 agonist (SABA) use without concomitant inhaled corticosteroids (ICS) exists. OBJECTIVE To examine SABA and maintenance therapy associations with severe asthma exacerbations across North America and Europe. METHODS Observational analyses of 10 SABa use IN Asthma (SABINA) datasets involving 1,033,564 patients (≥12 y) from Canada, France, the Netherlands, Poland, Spain, the United Kingdom, and the United States. Negative binomial models (incidence rate ratio [IRR] [95% CI adjusted for prespecified-covariates]) evaluated associations between SABA and exacerbations. RESULTS Across severities, 40.2% of patients were prescribed/possessed 3 or more SABA canisters/y. Per the Global Initiative for Asthma (GINA) 2018 definitions, steps 3 to 5-treated patients prescribed/possessing 3 or more versus 1 or 2 SABAs experienced more severe exacerbations (IRR 1.08 [95% CI 1.04‒1.13], U.S. Medicare; IRR 2.11 [95% CI 1.96‒2.27], Poland). This association was not observed in all step 1 or 2-treated patients (the Netherlands, IRR 1.25 [95% CI 0.91‒1.71]; U.S. commercial, IRR 0.92 [95% CI 0.91‒0.93]; U.S. Medicare, IRR 0.74 [95% CI 0.71‒0.76]). We hypothesize that this inverse association between SABA and severe exacerbations in the U.S. datasets was attributable to the large patient population possessing fewer than 3 SABA and no maintenance therapy and receiving oral corticosteroid bursts without face-to-face health care provider encounters. In U.S. SABA monotherapy-treated patients, 3 or more SABAs were associated with more emergency/outpatient visits and hospitalizations (IRR 1.31 [95% CI 1.29‒1.34]). Most GINA 2 to 5-treated study patients (60.6%) did not have maintenance therapy for up to 50% of the time; however, the association of 3 or more SABAs and severe exacerbations persisted (IRR 1.32 [95% CI 1.18‒1.49]) after excluding these patients and the independent effect was further confirmed when U.K. SABA data were analyzed as a continuous variable in patients with up to 100% annual coverage for ICS-containing medications. CONCLUSIONS Increasing SABA exposure is associated with severe exacerbation risk, independent of maintenance therapy. As addressed by GINA, based on studies across asthma severities where as-needed fast-acting bronchodilators with concomitant ICS decrease severe exacerbations compared with SABA, our findings highlight the importance of avoiding a rescue/reliever paradigm utilizing SABA monotherapy.
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Affiliation(s)
- Jennifer K Quint
- Faculty of Medicine, National Heart and Lung Institute, Imperial College London, London, United Kingdom.
| | | | - Janwillem W H Kocks
- General Practitioners Research Institute, Groningen, The Netherlands; Department of Pulmonology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands; Observational and Pragmatic Research Institute, Singapore; Groningen Research Institute Asthma and COPD (GRIAC), University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Maciej Kupczyk
- Department of Internal Medicine, Asthma and Allergy, Barlicki University Hospital, Medical University of Lodz, Lodz, Poland; Center for Allergy Research, IMM, Karolinska Institutet, Stockholm, Sweden
| | | | - Vicente Plaza
- Executive Committee of GEMA, Spanish Society of Pulmonology and Thoracic Surgery (SEPAR); Pneumology and Allergy Service, Hospital Santa Creu i Sant, Barcelona, Spain
| | - Claudia Cabrera
- BioPharmaceuticals Medical (Evidence), AstraZeneca, Gothenburg, Sweden
| | - Chantal Raherison-Semjen
- Department of Pulmonary Medicine, CHU Bordeaux, INSERM U1219 Bordeaux University, Bordeaux, France
| | - Brandie Walker
- Department of Medicine, Division of Respirology, University of Calgary, Calgary, Alta, Canada
| | - Erika Penz
- Department of Medicine, Division of Respirology, Critical Care and Sleep Medicine, University of Saskatchewan, Saskatoon, Sask, Canada; Respiratory Research Center, University of Saskatchewan, Saskatoon, Sask, Canada
| | | | - Njira Lucia Lugogo
- Department of Pulmonary & Critical Care Medicine, University of Michigan, Ann Arbor, Mich
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