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Immunosuppression for acquired hemophilia A: Results from the European Acquired Haemophilia Registry (EACH2)

Collins, Peter William, Baudo, Francesco, Knoebl, Paul, Levesque, Herve, Nemes, Laszlo, Pellegrini, Fabio, Marco, Pascual, Tengborn, Lilian and Huth-Kuhne, Angela 2012. Immunosuppression for acquired hemophilia A: Results from the European Acquired Haemophilia Registry (EACH2). Blood 120 (1) , pp. 47-55. 10.1182/blood-2012-02-409185

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Abstract

Acquired hemophilia A (AHA) is an autoimmune disease caused by an autoantibody to factor VIII. Patients are at risk of severe and fatal hemorrhage until the inhibitor is eradicated, and guidelines recommend immunosuppression as soon as the diagnosis has been made. The optimal immunosuppressive regimen is unclear; therefore, data from 331 patients entered into the prospective EACH2 registry were analyzed. Steroids combined with cyclophosphamide resulted in more stable complete remission (70%), defined as inhibitor undetectable, factor VIII more than 70 IU/dL and immunosuppression stopped, than steroids alone (48%) or rituximab-based regimens (59%). Propensity score-matched analysis controlling for age, sex, factor VIII level, inhibitor titer, and underlying etiology confirmed that stable remission was more likely with steroids and cyclophosphamide than steroids alone (odds ratio = 3.25; 95% CI, 1.51-6.96; P < .003). The median time to complete remission was approximately 5 weeks for steroids with or without cyclophosphamide; rituximab-based regimens required approximately twice as long. Immunoglobulin administration did not improve outcome. Second-line therapy was successful in approximately 60% of cases that failed first-line therapy. Outcome was not affected by the choice of first-line therapy. The likelihood of achieving stable remission was not affected by underlying etiology but was influenced by the presenting inhibitor titer and FVIII level.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
Systems Immunity Research Institute (SIURI)
Subjects: Q Science > QR Microbiology > QR180 Immunology
R Medicine > R Medicine (General)
Publisher: American Society of Hematology
ISSN: 0006-4971
Last Modified: 04 Jun 2017 04:21
URI: http://orca.cf.ac.uk/id/eprint/37365

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