PMID- 31251090 OWN - NLM STAT- MEDLINE DCOM- 20210303 LR - 20210303 IS - 1532-4303 (Electronic) IS - 0277-0903 (Linking) VI - 57 IP - 9 DP - 2020 Sep TI - Usability of mepolizumab single-use prefilled autoinjector for patient self-administration. PG - 987-998 LID - 10.1080/02770903.2019.1630641 [doi] AB - Objective: To evaluate usability of mepolizumab as a liquid drug product self-administered via a single-use prefilled autoinjector (AI) by patients with severe eosinophilic asthma (SEA), or their caregivers, in-clinic and at home.Methods: This open-label, single-arm, Phase IIIa study (NCT03099096; GSK ID: 204959) included patients aged >/=12 years with SEA who were either receiving mepolizumab (100 mg subcutaneously [SC]) every 4 weeks (Q4W) for >/=12 weeks before screening or not receiving mepolizumab but met criteria indicative of SEA. Patients/caregivers self-administered mepolizumab (100 mg SC) via an AI Q4W for 12 weeks. The first (Week 0) and third (Week 8) doses were observed in-clinic; the second dose (Week 4) was administered unobserved at home. Primary and secondary endpoints were the proportion of patients who successfully self-administered their third and second doses, respectively (determined by investigator/site staff). Patient experience, mepolizumab trough concentrations, blood eosinophil count (BEC), and safety were also assessed.Results: Of 159 patients/caregivers who self-administered >/=1 dose of mepolizumab, 157 completed the study. Nearly all patients successfully self-administered their third mepolizumab dose in-clinic and second dose at home (>/=98% and >/=96%, respectively); this was further confirmed by mepolizumab trough concentrations/BEC. At study end, >/=88% of patients were "very" or "extremely" confident about using the AI correctly. Incidence of on-treatment drug-related adverse events (AEs) was low (3%); no fatal AEs occurred.Conclusions: Patients/caregivers successfully self-administered mepolizumab via the AI both in-clinic and at home; no new safety concerns were identified. FAU - Bernstein, David AU - Bernstein D AD - Department of Medicine, University of Cincinnati, Cincinnati, OH, USA. FAU - Pavord, Ian D AU - Pavord ID AD - Nuffield Department of Medicine and Oxford Respiratory NIHR BRC, University of Oxford, Oxford, UK. FAU - Chapman, Kenneth R AU - Chapman KR AD - Asthma & Airway Centre, UHN and University of Toronto, Toronto, ON, Canada. FAU - Follows, Richard AU - Follows R AD - Respiratory Therapeutic Area, GSK, Stockley Park, Uxbridge, UK. FAU - Bentley, Jane H AU - Bentley JH AD - Clinical Statistics, GSK, Stockley Park, Uxbridge, UK. FAU - Pouliquen, Isabelle AU - Pouliquen I AD - Clinical Pharmacology Modelling & Simulation, GSK, Stockley Park, Uxbridge, UK. FAU - Bradford, Eric AU - Bradford E AD - Respiratory Therapeutic Area, GSK, Research Triangle Park, NC, USA. LA - eng SI - ClinicalTrials.gov/NCT03099096 PT - Clinical Trial, Phase III PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190628 PL - England TA - J Asthma JT - The Journal of asthma : official journal of the Association for the Care of Asthma JID - 8106454 RN - 0 (Anti-Asthmatic Agents) RN - 0 (Antibodies, Monoclonal, Humanized) RN - 90Z2UF0E52 (mepolizumab) SB - IM MH - Adolescent MH - Adult MH - Aged MH - Anti-Asthmatic Agents/*administration & dosage/adverse effects MH - Antibodies, Monoclonal, Humanized/*administration & dosage/adverse effects MH - Asthma/*drug therapy MH - Child MH - Drug-Related Side Effects and Adverse Reactions/*epidemiology/etiology MH - Feasibility Studies MH - Female MH - Humans MH - Incidence MH - Injections, Subcutaneous/instrumentation MH - Male MH - Middle Aged MH - Patient Satisfaction MH - Self Administration/adverse effects/*instrumentation MH - Treatment Outcome MH - Young Adult OTO - NOTNLM OT - at-home OT - blood eosinophil count OT - device OT - self-injected OT - severe eosinophilic asthma EDAT- 2019/06/30 06:00 MHDA- 2021/03/04 06:00 CRDT- 2019/06/29 06:00 PHST- 2019/06/30 06:00 [pubmed] PHST- 2021/03/04 06:00 [medline] PHST- 2019/06/29 06:00 [entrez] AID - 10.1080/02770903.2019.1630641 [doi] PST - ppublish SO - J Asthma. 2020 Sep;57(9):987-998. doi: 10.1080/02770903.2019.1630641. Epub 2019 Jun 28.