PMID- 38519044 OWN - NLM STAT- Publisher LR - 20240322 IS - 2567-5761 (Electronic) IS - 0720-9355 (Linking) DP - 2024 Mar 22 TI - Use of Vonicog Alpha and Acquired von Willebrand Syndrome, a New Approach: A Case Report. LID - 10.1055/a-2266-7984 [doi] AB - Therapeutic management of acquired von Willebrand syndrome (AVWS) can be challenging, particularly in cases of AVWS associated with monoclonal IgM such as Waldenstrom macroglobulinemia (WM) where several therapeutic options may be ineffective. Here, we describe the case of an 88-year-old patient who developed AVWS during follow-up for WM. The presence of a severe bleeding symptomatology not controlled by several therapies (plasma-derived von Willebrand factor, plasmapheresis) led us to introduce a supplementation with recombinant von Willebrand factor, vonicog alpha (Veyvondi, Takeda, Japan), starting at a dose of 50 IU/kg/d. This supplementation allowed clinical (no further bleeding) and biological (hemoglobin level, von Willebrand factor parameters) improvements. Because of the persistence of bleeding risk factors, the treatment was maintained at a prophylactic dose (20 UI/kg three times a week), without recurrence of bleeding events for a period of 9 months. CI - Thieme. All rights reserved. FAU - Blandinieres, Adeline AU - Blandinieres A AD - Department of Hematology, Public Assistance Hospitals of Paris (AP-HP), Bicetre Hospital, Le Kremlin-Bicetre, France. AD - University of Paris-Saclay, INSERM Hemostasis, Inflammation and Thrombosis Unit (HITh) U1176, Le Kremlin-Bicetre, France. FAU - Combe, Sophie AU - Combe S AD - Department of Hematology, Public Assistance Hospitals of Paris (AP-HP), Bicetre Hospital, Le Kremlin-Bicetre, France. FAU - Chanson, Noemie AU - Chanson N AD - Department of Internal Medicine and Clinical Immunology, Public Assistance Hospitals of Paris (AP-HP), Bicetre Hospital, Le Kremlin-Bicetre, France. FAU - Lambotte, Olivier AU - Lambotte O AD - Department of Internal Medicine and Clinical Immunology, Public Assistance Hospitals of Paris (AP-HP), Bicetre Hospital, Le Kremlin-Bicetre, France. AD - University of Paris-Saclay, INSERM, CEA, UMR 1184, Le Kremlin-Bicetre, France. FAU - Lavenu-Bombled, Cecile AU - Lavenu-Bombled C AD - Department of Hematology, Public Assistance Hospitals of Paris (AP-HP), Bicetre Hospital, Le Kremlin-Bicetre, France. AD - University of Paris-Saclay, INSERM Hemostasis, Inflammation and Thrombosis Unit (HITh) U1176, Le Kremlin-Bicetre, France. LA - eng PT - Journal Article DEP - 20240322 PL - Germany TA - Hamostaseologie JT - Hamostaseologie JID - 8204531 SB - IM COIS- A.B. has received financial support from BMS, Takeda, Sobi, and LFB for registration fees and accommodation for scientific congress. S.C. has received financial support from CSL Behring for registration fees and accommodation for scientific congress. O.L. has received financial supports from MSD, BMS, AbbVie, and Boehringer for registration fees, education, and consultancy fees. C.L-B. has received financial supports from CSL Behring, Sobi, Novo Nordisk, Takeda, Octapharma, and LFB for registration fees and education fees. N.C. declares no conflict of interest. EDAT- 2024/03/23 05:42 MHDA- 2024/03/23 05:42 CRDT- 2024/03/22 20:33 PHST- 2024/03/23 05:42 [medline] PHST- 2024/03/23 05:42 [pubmed] PHST- 2024/03/22 20:33 [entrez] AID - 10.1055/a-2266-7984 [doi] PST - aheadofprint SO - Hamostaseologie. 2024 Mar 22. doi: 10.1055/a-2266-7984.