Disease Burden and Access to Biologic Therapy in Patients with Severe Asthma, 2017–2022: An Analysis of the International Severe Asthma Registry

Abstract

Tham T Le,1 David B Price,2– 4 Clement Erhard,5 Bill Cook,6 Anna Quinton,7 Rohit Katial,8 George C Christoff,9 Luis Perez-de-Llano,10 Alan Altraja,11,12 Celine Bergeron,13 Arnaud Bourdin,14 Mariko Siyue Koh,15,16 Lauri Lehtimäki,17,18 Bassam Mahboub,19 Nikolaos G Papadopoulos,20,21 Paul Pfeffer,22,23 Chin Kook Rhee,24 Victoria Carter,2,3 Neil Martin,25,26 Trung N Tran1 On behalf of the EVEREST Study Working Group1BioPharmaceuticals Medical, AstraZeneca, Gaithersburg, MD, USA; 2Observational and Pragmatic Research Institute, Singapore; 3Optimum Patient Care Global, Cambridge, UK; 4Centre of Academic Primary Care, Division of Applied Health Sciences, University of Aberdeen, Aberdeen, UK; 5BioPharmaceuticals Medical, AstraZeneca, Cambridge, UK; 6Respiratory and Immunology, BioPharmaceuticals Medical, AstraZeneca, Gaithersburg, MD, USA; 7BioPharmaceuticals R&D, AstraZeneca, Cambridge, UK; 8Global Medical Respiratory, BioPharmaceuticals Medical, AstraZeneca, Gaithersburg, MD, USA; 9Faculty of Public Health, Medical University Sofia, Sofia, Bulgaria; 10Department of Respiratory Medicine, University Hospital Lucus Augusti, Lugo, Spain; 11Department of Pulmonology, University of Tartu, Tartu, Estonia; 12Lung Clinic, Tartu University Hospital, Tartu, Estonia; 13Centre for Lung Health, Vancouver General Hospital, University of British Columbia, Vancouver, BC, Canada; 14PhyMedExp, University of Montpellier, CNRS, INSERM, University Hospital of Montpellier, Montpellier, France; 15Respiratory and Critical Care Medicine, Singapore General Hospital, Singapore; 16Duke-NUS Medical School, Singapore; 17Allergy Centre, Tampere University Hospital, Tampere, Finland; 18Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland; 19Rashid Hospital, Dubai Health Authority, Dubai, United Arab Emirates; 20Division of Infection, Immunity and Respiratory Medicine, University of Manchester, Manchester, UK; 21Allergy Department, 2nd Pediatric Clinic, University of Athens, Athens, Greece; 22Department of Respiratory Medicine, Barts Health NHS Trust, London, UK; 23Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK; 24Department of Internal Medicine, Division of Pulmonary and Critical Care Medicine, Seoul St. Mary’s Hospital, College of Medicine, the Catholic University of Korea, Seoul, South Korea; 25Respiratory and Immunology, BioPharmaceuticals Medical, AstraZeneca, Cambridge, UK; 26University of Leicester, Leicester, UKCorrespondence: Trung N Tran, BioPharmaceuticals Medical, Respiratory and Immunology, AstraZeneca, Gaithersburg, MD, USA, Email [email protected]: Patients with severe asthma may be prescribed biologic therapies to improve disease control. The EVEREST study aimed to characterize the global disease burden of patients with severe asthma without access to biologics and those who have access but do not receive biologics, as well as the remaining unmet need despite use of these therapies.Methods: This was a historical cohort study of patients with severe asthma (aged ≥ 18 years) in the International Severe Asthma Registry receiving Global Initiative for Asthma (GINA) 2018 step 5 treatment, or with uncontrolled disease at GINA step 4. Prospective data on patient clinical characteristics, healthcare resource utilization, and medication use over a 12-month period between December 2017 and May 2022 were assessed for the following five groups: biologics accessible (omalizumab, mepolizumab, reslizumab, benralizumab, or dupilumab); biologics inaccessible; biologics accessible but not received; biologics accessible and received; and biologic recipients whose asthma remained suboptimally controlled.Results: Overall, 9587 patients from 21 countries were included. Among patients in the biologics accessible (n=5073), biologics inaccessible (n=3041), and biologics accessible but not received (n=382) groups, 41.4%, 18.7%, and 49.6% experienced at least two exacerbations, 11.5%, 10.5%, and 6.2% required at least one hospitalization, 47.9%, 54.6%, and 71.2% had uncontrolled asthma, and 23.9%, 8.6%, and 11.0% received long-term oral corticosteroids (LTOCS), respectively. Following biologic therapy, among patients who received biologics overall (n=2666) and among those whose asthma remained suboptimally controlled (n=1780), 19.1% and 23.0% experienced at least two exacerbations, 2.7% and 2.9% required at least one hospitalization, and 16.7% and 22.0% received LTOCS, respectively.Conclusion: There is a substantial disease burden in both patients without access to biologics and those with access who do not receive these therapies, although specific outcomes may vary between these groups. There also remains a high unmet need among biologic recipients, many of whom have a suboptimal response to treatment.Keywords: biologic, disease burden, healthcare resource utilization, severe asthma

Keywords

• biologic
• disease burden
• healthcare resource utilization
• severe asthma