Related Experiment Video
Updated: Jul 8, 2025

Tail Vein Transection Bleeding Model in Fully Anesthetized Hemophilia A Mice
Published on: September 30, 2021
Use of nonacog beta pegol during surgery in persons with hemophilia B: a case series
Chai W Phua1, Davide Matino2, Caspar D Kühnöl3
1Division of Hematology, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada.
Background:
Hemophilia B is a coagulation disorder that puts patients at an increased risk of bleeding. Factor (F) IX replacement therapy is traditionally used in such cases to maintain hemostasis. Nonacog beta pegol (N9-GP; Refixia) is a glycoPEGylated, extended half-life, recombinant FIX product that has demonstrated safety and efficacy when used to manage persons with hemophilia B.
Key Clinical Question:
Given the limited real-world evidence, we aimed to explore the role of N9-GP in maintaining hemostasis in persons with hemophilia B undergoing surgery.
Clinical Approach:
In this case series, we report real-world clinical experience with N9-GP to maintain hemostasis in persons with hemophilia B undergoing major and minor surgeries.
Conclusion:
The majority of cases presented in this case series had an excellent or very good hemostatic response, with no reported surgical complications related to the use of N9-GP.
Related Concept Videos
Anticoagulant Drugs: Low-Molecular-Weight Heparins
Treatment for Pulmonary Arterial Hypertension: Prostacyclin Receptor Agonists
These agonists bind to the IPR receptor situated on the plasma membrane of the pulmonary artery smooth muscle cells. This binding triggers a cascade of reactions known as the GS-AC-cAMP-PKA pathway. This pathway results in the relaxation of smooth muscle...

