Cited by 96Eosinophilic Disorders and SyndromesAsthma and respiratory diseasesImmunodeficiency and Autoimmune Disorders

Long-term clinical outcomes of high-dose mepolizumab treatment for hypereosinophilic syndrome

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Kuang, Fei Li, Fay, Michael P., Ware, JeanAnne, Wetzler, Lauren, Holland-Thomas, Nicole, Brown, Thomas, Ortega, Hector, Steinfeld, Jonathan +2 more·2018·The Journal of Allergy and Clinical Immunology In Practice

Abstract

Background Conventional therapies for hypereosinophilic syndromes (HES) have variable efficacy and carry significant long-term toxicities. Anti-IL-5 (mepolizumab) therapy has a glucocorticoid (GC)-sparing effect in GC-sensitive HES, but the efficacy of mepolizumab in treatment-refractory HES patients with severe disease has not been examined to date.Objective To identify predictors of response to mepolizumab in subjects with severe treatment-refractory HES and compare long-term outcomes in these subjects with HES subjects treated with conventional therapies.Methods Retrospective analysis of clinical and laboratory data from 35 HES subjects treated with mepolizumab and 55 HES subjects on conventional therapy, all followed at a single center, was performed.Results Peak eosinophilia, GC sensitivity, pulmonary involvement, HES clinical subtype, and pretreatment serum IL-5 were correlated with mepolizumab response. Despite evidence of more severe disease at baseline, mepolizumab-treated subjects had comparable long-term clinical outcomes to HES subjects treated with conventional therapies and reported improvements in therapy-related comorbidities. Subjects managed with mepolizumab monotherapy had fewer disease flares than HES subjects on conventional therapies or mepolizumab-treated HES subjects requiring additional HES therapies.Conclusions This study confirms that mepolizumab is an effective and well-tolerated therapy for HES, but suggests that response is more likely in GC-responsive subjects with idiopathic or overlap forms of HES. A primary benefit of treatment is the reduction of comorbidity due to discontinuation or the reduction of conventional HES therapies. Although subjects who completely discontinued GC had the most benefit, high-dose mepolizumab was a safe and effective salvage therapy for severe, treatment-refractory HES.

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Crossref · 10.1016/j.jaip.2018.04.033

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  1. [14]Duncan EA, Ortega H, Gleich G, Price R, Yancey S, Klion AD. Observational experience describing the use of mepolizumab in patients with hypereosinophilic syndrome. Am J Respir Crit Care Med 2015; 191: A1365.

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Authors
Kuang, F. L., Fay, M. P., Ware, J., Wetzler, L., Holland-Thomas, N., Brown, T., Ortega, H., Steinfeld, J., Khoury, P., & Klion, A. D.
Affiliations
  • National Institutes of Health (US)
  • Frederick National Laboratory for Cancer Research (US)
  • GlaxoSmithKline (United States) (US)
Corresponding author
Kuang, Fei Li
Venue
The Journal of Allergy and Clinical Immunology In Practice
Publisher
Elsevier BV
Published
2018-09
Volume
6
Issue
5
Pages
1518-1527.e5
ISSN
2213-2198 (ISSN-L)
OpenAlex
W2802833453
Cited by
94
References
26
Citations by year
2026: 5 · 2025: 13 · 2024: 13 · 2023: 6 · 2022: 15 · 2021: 13 · 2020: 9 · 2019: 15 · 2018: 5
FWCI
8.97
Type
journal article
Language
en
Open access
Locations
  • The Journal of Allergy and Clinical Immunology In Practice (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (HHSN261200800001C, Z99 AI999999)
  • National Cancer Institute (HHSN261200800001E))
Topics
  • Health Sciences › Medicine › Rheumatology › Eosinophilic Disorders and Syndromes
  • Health Sciences › Medicine › Physiology › Asthma and respiratory diseases
  • Life Sciences › Immunology and Microbiology › Immunology › Immunodeficiency and Autoimmune Disorders
Keywords
hypereosinophilic syndrome, mepolizumab, anti-IL-5 therapy, refractory disease, glucocorticoid sensitivity, predictors of treatment response, disease flares, pulmonary involvement, long-term clinical outcomes, comorbidity reduction, salvage therapy
MeSH terms
Adult, Aged, Drug Resistance, Eosinophils, Female, Follow-Up Studies, Glucocorticoids, Humans, Immunotherapy, Male, Middle Aged, Retrospective Studies, Time Factors, Interleukin-5, Treatment Outcome, Hypereosinophilic Syndrome, Disease Progression, Antibodies, Monoclonal, Humanized

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