Characteristics and Outcomes of Patients with Severe Eosinophilic Asthma Treated with Benralizumab Enrolled in the Connect 360 Patient Support Programme

ABSTRACT

RATIONALE Around 4.6 million people in the United Kingdom (UK) have asthma, with an estimated 5.7% treated for severe asthma. Benralizumab is indicated for the treatment of severe eosinophilic asthma (SEA) in adults inadequately controlled despite appropriate maintenance therapy. The Connect 360 Patient Support Programme (PSP) for patients on benralizumab includes options for home-based drug administration, education and adherence support by trained nurses - of particular relevance during the COVID-19 pandemic. Limited evidence exists on the benefit of PSPs for asthma patients or those administering biological therapies at home. This study aims to describe patient characteristics, key outcomes and experience with the PSP using UK data from Connect 360. METHODS: A non-interventional, retrospective cohort study of patients, enrolled in the PSP (Oct-2019 onwards) and consenting to the use of personal data for research purposes (“study cohort”). Patients opting for additional support services with at least one nurse interaction within described study timeframes formed the clinical cohort. Patients were observed up to 48 weeks post-PSP enrolment (interim data taken on 31-Mar-2021;data collection ongoing) with study endpoints assessed at baseline (0-4 weeks), 24 (±4) weeks and 48 (±8) weeks post-PSP enrolment. Characteristics at enrolment are described for the study cohort. Patient-reported clinical outcomes (hospitalisations, maintenance oral corticosteroid [mOCS] use, Asthma Control Questionnaire [ACQ-6] scores) and service satisfaction (1-5 point scale, 5 being most satisfied) were analysed where available from routine PSP nurse calls/visits. Analysis was descriptive;Kaplan-Meier estimators were used to estimate PSP discontinuation rates. RESULTS: The study cohort was 611 patients (mean enrolment age 54.1 years, 63.2% female [N=323]). Most (98.9%) were benralizumab users on maintenance dosing (8-weekly) at enrolment. The clinical cohort consisted of 149 (baseline), 175 (24 weeks) and 195 (48 weeks) patients. PSP discontinuation rates were 4.4% and 11.6% at 24 and 48 weeks. Proportion of patients reporting mOCS use was 49.7%, 44.0% and 32.8% at each timepoint and hospitalizations were 10.9% and 4.1% at 24 and 48 weeks. Mean ACQ-6 scores decreased over time. Mean (SD) satisfaction scores were 4.6 (0.7) and 4.8 (0.5) at 24 and 48 weeks, respectively. (Table 1). CONCLUSIONS: Overall patients' experience with the PSP was positive, evidenced by high satisfaction with and persistence to the PSP. Where data were available, proportion of patients reporting mOCS and hospitalizations at 48 weeks were numerically lower than previous timepoints and mean ACQ-6 scores improved, suggesting a positive impact of benralizumab treatment within the PSP.