Continuous infusion of simoctocog alfa in haemophilia A patients undergoing surgeries.

ABSTRACT

INTRODUCTION: There are two major principles for coagulation factor replacement in the clinical management of surgical procedures in patients with haemophilia, repetitive bolus injections every 6-12 hours or administration of coagulation factor concentrates by continuous infusion. AIM: The aim was to investigate the efficacy of simoctocog alfa (human-cl rhFVIII) delivered by continuous infusion for bleeding prophylaxis during surgery in patients with haemophilia A. METHODS: We investigated the use of continuous infusion with simoctocog alfa in haemophilia A patients undergoing major surgical procedures at Oslo University Hospital from September 2015 to March 2018. The objectives were haemostatic outcome, in vivo recovery, stability over time at room temperature (3 days) and inhibitor development. RESULTS: Simoctocog alfa demonstrated treatment success in terms of haemostatic efficacy in 100% of major surgeries used as CI 87% (n=21) excellent; 13% (n=3) good. No erythrocyte transfusions were required in any patient, no adverse events occurred and no inhibitors developed. The product was stable for 3 days at room temperature without loss of activity. Mean in vivo recovery was 1.8 (0.3) (IU/mL/IU/kg). CONCLUSION: Continuous infusion with simoctocog alfa was found to achieve good/excellent haemostatic efficacy in all procedures. No adverse events occurred and no inhibitors developed.