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Updated: May 23, 2026

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Published on: September 30, 2021
FEIBA: a prohemostatic agent
Caroline Cromwell1, Louis M Aledort
1Division of Hematology/Oncology, Department of Medicine, Mount Sinai School of Medicine, New York, New York 10029-6574, USA. caroline.cromwell@mssm.edu
Factor eight inhibitor bypassing activity (FEIBA) has a 30-year history in hemophilia treatment. Ongoing research focuses on its efficacy, safety, and monitoring needs compared to other agents.
Area of Science:
- Hematology
- Hemostasis
- Pharmacology
Background:
- Factor eight inhibitor bypassing activity (FEIBA) is an established treatment for hemophilia patients with inhibitors.
- Its use spans over three decades, necessitating a review of its clinical profile.
Purpose of the Study:
- To review the history and clinical use of FEIBA in hemophiliac patients with inhibitors.
- To discuss key issues including thrombosis, efficacy, and comparisons with alternative bypassing agents.
Main Methods:
- Literature review of historical data and clinical studies on FEIBA.
- Comparative analysis of FEIBA against other bypassing agents.
Main Results:
- FEIBA has a long-standing record of use in managing hemophilia with inhibitors.
- The review encompasses safety concerns like thrombosis and efficacy data.
Conclusions:
- The clinical utility of FEIBA is well-documented over 30 years.
- There is a continued need for reliable surrogate assays to monitor hemostasis during FEIBA treatment.
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