Patient satisfaction and acceptability of an on-demand and on-prophylaxis device for factor VIII delivery in patients with hemophilia A

Background: FuseNGO is a relatively new device consisting of a prefilled dual-chamber syringe (DCS) that was recently introduced for the reconstitution of recombinant factor VIII. Herein, the DCS device was assessed using five questionnaires with the primary aim of evaluating patient perceptions and preferences. Methods: An observational, non-interventional, longitudinal study on 86 patients with a confirmed diagnosis of hemophilia A was carried out at 21 sites in Italy. Each patient underwent a baseline visit and final study visit within 3-6 months. Patients were administered five questionnaires: HemoPREF; Treatment Satisfaction Questionnaire for Medication (TSQM); VeritasPRO; Hemophilia Well-being Index (HWBI); Work Productivity and Activity Impairment Questionnaire (WPAI) + Classroom Impairment Questions (CIQ): Hemophilia Specific (HS). Results: Compared to baseline, scores for HemoPREF were higher at follow-up; significant increases in the percentage of positive responses were seen for all questions regarding the ease of use (P70% in the VeritasPRO questionnaire, and the majority of patients reported in the HWBI that hemophilia A did not affect their lives in a significant way. The perceived level of overall impairment was 30% as reported in the WPAI + CIQ: HS, indicating little impairment. There were no safety concerns. Conclusion: Considering patient-reported outcomes, the DCS device was associated with easier preparation, storage, disposal of equipment, and overall use. Of particular note, preparation times were reduced by around 50%. The majority of patients were satisfied with the device and overall adherence scores were high. Considering these results, the device has the potential to increase adherence to therapy and, possibly, reduce healthcare costs. Keywords: factor VIII delivery, device, hemophilia A, patient satisfaction, adherence