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Characteristics of patients with severe, uncontrolled, eosinophilic asthma enrolled in a French cohort

Authors Aubier M, Thabut G, Fabry-Vendrand C

Received 13 April 2018

Accepted for publication 16 June 2018

Published 31 August 2018 Volume 2018:11 Pages 217—224

DOI https://doi.org/10.2147/JAA.S170866

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Amy Norman

Peer reviewer comments 2

Editor who approved publication: Dr Amrita Dosanjh


Michel Aubier,1–4 Gabriel Thabut,1–3,5 Caroline Fabry-Vendrand6

1Inserm UMR1152, Physiopathology and Epidemiology of Respiratory Diseases, Paris, France; 2Faculty of Medicine, Paris Diderot University, Paris, France; 3Laboratory of Excellence, INFLAMEX, Université Sorbonne Paris Cité and DHU FIRE, Paris, France; 4Pneumology A Department, Bichat-Claude-Bernard University Hospital, Paris, France; 5Pneumology B Department, Bichat-Claude-Bernard University Hospital, Paris, France; 6Epidemiology and Research Partnerships, AstraZeneca, Courbevoie, France

Background and objective: Benralizumab (Fasenra™) has recently been approved as add-on maintenance treatment for adult patients with severe eosinophilic asthma inadequately controlled despite high-dosage inhaled corticosteroids plus long-acting β2-agonists. We aimed to identify and describe the clinical characteristics and disease burden of patients with severe, uncontrolled, eosinophilic asthma in France who may be eligible for treatment with benralizumab.
Patients and methods: This was a retrospective analysis of a prospective, noninterventional, observational study of patients in France enrolled in the Asthma and Bronchial Obstruction Cohort (COBRA). First, we selected adult patients with severe asthma, a documented blood eosinophil count, 12 months of baseline data, and 12 months of follow-up data. Of these study-eligible patients, we next determined the prevalence and described the clinical characteristics and disease burden of patients who would be eligible to receive benralizumab, namely those with ≥2 asthma exacerbations in the previous 12 months and a blood eosinophil count ≥300/μL who were receiving high-dosage inhaled corticosteroids/long-acting β2-agonists.
Results: Of the 441 patients eligible for this study, 85 (19%) met the criteria for benralizumab therapy. At study inclusion, benralizumab-eligible patients had a smaller prebronchodilator forced expiratory volume in 1 second and less effective asthma control compared with benralizumab-ineligible patients. During the 12-month follow-up period, benralizumab-eligible patients had greater frequencies of asthma exacerbations and hospitalizations compared with benralizumab-ineligible patients.
Conclusion: Of patients with severe asthma, approximately 20% were qualified for benralizumab treatment. Benralizumab-eligible patients had increased bronchial obstruction, worse asthma control, and a greater frequency of asthma exacerbations and hospitalizations during follow-up care compared with benralizumab-ineligible patients, demonstrating inadequate disease control for these patients.

Keywords: COBRA, benralizumab, biologic, eosinophilia, France

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