Anti-CD38 antibody for refractory acquired hemophilia A

J Thromb Haemost. 2023 Jun;21(6):1515-1518. doi: 10.1016/j.jtha.2023.03.010. Epub 2023 Mar 20.

Abstract

Patients with acquired hemophilia A (AHA) are prone to bleeding symptoms due to decrease in factor (F)VIII activity caused by FVIII antibodies. Risk of severe bleeding in AHA is higher than that of hereditary hemophilia, so clearance of FVIII inhibitors is necessary for treatment, especially in refractory AHA. Daratumumab is currently a popular monoclonal antibody for clearing plasma cells and antibodies and is often used in multiple myeloma. Based on this, we report, for the first time, that 4 patients with AHA who were refractory to first- and second-line therapy were treated with daratumumab and achieved good responses. None of our 4 patients developed serious infections. Thus, we provide a new approach for treating refractory AHA.

Keywords: FVIII inhibitor; acquired hemophilia A; daratumumab; factor VIII; immunosuppression therapy.

Publication types

  • Case Reports
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Factor VIII
  • Hemophilia A* / diagnosis
  • Hemophilia A* / drug therapy
  • Hemorrhage / complications
  • Humans

Substances

  • Factor VIII

Supplementary concepts

  • Factor 8 deficiency, acquired