Bleed treatment with eptacog beta (rFVIIa) results in a low incidence of rebleeding in adult and adolescent patients with haemophilia A or B with inhibitors

• DOI: 10.1111/hae.15109
• Publication Date: 2024-12-16T07:00:21Z
• Authors: Amy Dunn; Yesim Dargaud; Yasmina Abajas; Manuel Carcao; Giancarlo Castaman; Adam Giermasz; Cédric Hermans; Victor Jiménez‐Yuste; Magdalena Lewando...; Johnny Mahlangu; Shannon Meeks; Wolfgang Miesbach; Michael Recht; Vanessa Salinas; Tammuella Chrisen...; Daniel Bonzo; Ian S. Mitchell; Thomas A. Wilkinson; Guy Young
• Keywords: Adult; Male; Adolescent; efficacy; haemophilia; Hemorrhage; Factor VIIa; Hemophilia A; Hemophilia B; Young Adult; 03 medical and health sciences; 0302 clinical medicine; inhibitors; Humans; Child; eptacog beta; Incidence; Middle Aged; Recombinant Proteins; rebleeding incidence; Treatment Outcome; Female; Original Article; recombinant FVIIa

AbstractIntroductionEptacog beta is a novel human recombinant FVIIa approved for use in the United States, European Union, United Kingdom and Mexico for the treatment and control of bleeding in patients with haemophilia A or B with inhibitors (≥12 years). It is also indicated for perioperative care in the same patient population in Europe and the United Kingdom.AimTo assess the incidence of rebleeding and review treatment outcomes in subjects with haemophilia with inhibitors enrolled in the phase 3 PERSEPT 1 clinical trial.MethodsTo treat mild/moderate bleeding episodes (BEs), subjects administered an initial 75 or 225µg/kg dose of eptacog beta, followed (if necessary) by additional 75µg/kg doses at predefined intervals until bleed control. This analysis used subject‐reported rebleeding to determine a rebleeding incidence for the first 24 h. Rebleeding through later timepoints was an exploratory, intention‐to‐treat analysis of bleed treatment data.ResultsFour hundred and sixty‐five BEs were analysed. Through 24 h, the proportion of rebleeds was 0% (initial 75µg/kg dose) and 0.5% (initial 225µg/kg dose). Through 48 h, the proportion of rebleeds was 3.2% (75µg/kg initial dose) and 5.6% (225µg/kg initial dose); the difference between initial dose strategies was not statistically significant. The majority of rebleeds were controlled with a single dose of eptacog beta and no subject who treated a rebleed required hospitalization.ConclusionSubjects with haemophilia with inhibitors who used eptacog beta to treat mild/moderate BEs experienced a low incidence of rebleeding. Rebleeds that did occur were effectively controlled with eptacog beta (median, one dose) without the need for hospitalization.