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Omani experience with the use of factor IX Fc fusion protein

Shireen I Alzadjali1,2, Yasser Wali3

  • 1School of Pharmacy, University of London, London, UK umhanifa@squ.edu.com.

BMJ Case Reports
|July 22, 2021
PubMed

Insights

Factor IX Fc fusion protein offers improved hemophilia B management with fewer injections and better bleeding control. This tailored prophylaxis is cost-effective and well-tolerated in pediatric patients.

Area of Science:

  • Hematology
  • Pharmacology

Background:

  • Hemophilia B is a genetic bleeding disorder requiring lifelong management.
  • Standard half-life Factor IX (FIX) prophylaxis necessitates frequent infusions.
  • Factor IX Fc fusion protein (e.g., eftinixor) offers extended half-life for potential improved prophylaxis.

Observation:

  • Two pediatric patients with hemophilia B were managed using a personalized dosing schedule of Factor IX Fc fusion protein.
  • Treatment involved tailored prophylaxis to optimize therapeutic levels.

Findings:

  • Prophylaxis with Factor IX Fc fusion protein demonstrated significant advantages over standard half-life FIX.
  • Key benefits included a substantial reduction in injection frequency.
  • Improved bleeding control, enhanced tolerability, and absence of inhibitor development were observed.

Implications:

  • Factor IX Fc fusion protein represents a potentially more effective and efficient prophylactic strategy for hemophilia B.
  • Personalized dosing schedules may optimize outcomes and patient adherence.
  • This approach could lead to improved quality of life for individuals with hemophilia B.

Keywords:
congenital disordershaematology (incl blood transfusion)paediatrics

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