Successful immunosuppressive drug‐free immune tolerance induction in hemophilia B with inhibitor and anaphylaxis to factor IX: A case report

Author:

Palomo Bravo Ángeles1,Prieto Bonilla Rosario1,Bardan Rebollar Daniel1,López‐Jaime Francisco José2,Fernández‐Bello Ihosvany2ORCID

Affiliation:

1. Hematology Service Hospital Regional Universitario Materno‐Infantil de Málaga Málaga Spain

2. Thrombosis and Hemostasis Unit, Hematology Service Hospital Regional Universitario de Málaga Málaga Spain

Abstract

Key Clinical MessageRecommendations advise factor IX desensitization before immune tolerance induction in severe hemophilia B, supported by immunosuppression. A child with inhibitor and anaphylaxis to factor IX showed successful immunosuppression‐free immune tolerance induction using very low and slowly increasing doses of a factor IX extended‐half‐life product. Immune tolerance to factor IX based on this protocol merits further study.

Funder

CSL Behring España

Publisher

Wiley

Reference15 articles.

1. Hemophilia B: molecular pathogenesis and mutation analysis

2. WFH Guidelines for the Management of Hemophilia, 3rd edition

3. Establishing the Prevalence and Prevalence at Birth of Hemophilia in Males

4. Factor‐ix inhibitors in hemophilia‐B patients‐their incidence and prospects for development with high‐purity factor‐ix products;Briet E;Blood Coagul Fibrinolysis,1991

5. Gene Mutations and Inhibitor Formation in Patients with Hemophilia B

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