Sameer K Mathur, Jared Silver, Sean D MacKnight, Ana Urosevic, Cristina Martinez, Kaixin Zhang, François Laliberté, Arijita Deb
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引用次数: 0
Abstract
Background: Eosinophilic granulomatosis with polyangiitis (EGPA) is a rare, chronic inflammatory disease characterized by asthma and small/medium vessel vasculitis. Mepolizumab is approved for use in EGPA disease management alongside oral corticosteroids (OCS), but evidence of its real-world impact is limited.
Objective: To compare real-world treatment patterns and health outcomes, particularly OCS use, EGPA-related hospitalizations/relapses, and asthma exacerbations pre- and post-mepolizumab initiation in US patients with EGPA.
Methods: Patients with EGPA receiving ≥2 mepolizumab doses were identified using administrative claims data from Komodo Health's Comprehensive Dataset (December 2016-March 2020). Outcomes assessed pre- and post-mepolizumab initiation included corticosteroid/other medication use, EGPA-related hospitalizations/relapses, and asthma exacerbations.
Results: Overall, 114 patients were identified; of these, 60 (53%) received mepolizumab 300 mg at index. Average daily OCS dose per dispensing was significantly lower post- versus pre-mepolizumab initiation (21.2 vs 26.8 mg/day, 21% relative reduction, P<0.001); mean number of OCS bursts also decreased (0.9 vs 1.8, 50% relative reduction, P<0.001). Patients experienced significantly lower rates of EGPA-related hospitalization (0.86 vs 1.55 per person-year [PPY], 49% relative reduction, P=0.004) and EGPA relapse (3.18 vs 3.94 PPY, 19% relative reduction, P=0.004) post- versus pre-initiation. Most patients (91%) had an asthma diagnosis at baseline; among these patients, asthma exacerbation rates were significantly lower post- versus pre-initiation (1.05 vs 1.84 PPY, 42% relative reduction, P=0.004).
Conclusion: Mepolizumab was associated with significant steroid-sparing benefits and significantly reduced rates of EGPA-related hospitalizations, EGPA relapses, and asthma exacerbations in this real-world study of US patients with EGPA, confirming the benefits of mepolizumab treatment seen in clinical trials.
期刊介绍：
Annals of Allergy, Asthma & Immunology is a scholarly medical journal published monthly by the American College of Allergy, Asthma & Immunology. The purpose of Annals is to serve as an objective evidence-based forum for the allergy/immunology specialist to keep up to date on current clinical science (both research and practice-based) in the fields of allergy, asthma, and immunology. The emphasis of the journal will be to provide clinical and research information that is readily applicable to both the clinician and the researcher. Each issue of the Annals shall also provide opportunities to participate in accredited continuing medical education activities to enhance overall clinical proficiency.
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