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Scully M, Antun A, Cataland SR, Coppo P, Dossier C, Biebuyck N, Hassenpflug WA, Kentouche K, Knöbl P, Kremer Hovinga JA, López-Fernández MF, Matsumoto M, Ortel TL, Windyga J, Bhattacharya I, Cronin M, Li H, Mellgård B, Patel M, Patwari P, Xiao S, Zhang P, Wang LT. Recombinant ADAMTS13 in Congenital Thrombotic Thrombocytopenic Purpura. N Engl J Med 2024; 390:1584-1596. [PMID: 38692292 DOI: 10.1056/nejmoa2314793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/03/2024]
Abstract
BACKGROUND Congenital thrombotic thrombocytopenic purpura (TTP) results from severe hereditary deficiency of ADAMTS13. The efficacy and safety of recombinant ADAMTS13 and standard therapy (plasma-derived products) administered as routine prophylaxis or on-demand treatment in patients with congenital TTP is not known. METHODS In this phase 3, open-label, crossover trial, we randomly assigned patients in a 1:1 ratio to two 6-month periods of prophylaxis with recombinant ADAMTS13 (40 IU per kilogram of body weight, administered intravenously) or standard therapy, followed by the alternate treatment; thereafter, all the patients received recombinant ADAMTS13 for an additional 6 months. The trigger for this interim analysis was trial completion by at least 30 patients. The primary outcome was acute TTP events. Manifestations of TTP, safety, and pharmacokinetics were assessed. Patients who had an acute TTP event could receive on-demand treatment. RESULTS A total of 48 patients underwent randomization; 32 completed the trial. No acute TTP event occurred during prophylaxis with recombinant ADAMTS13, whereas 1 patient had an acute TTP event during prophylaxis with standard therapy (mean annualized event rate, 0.05). Thrombocytopenia was the most frequent TTP manifestation (annualized event rate, 0.74 with recombinant ADAMTS13 and 1.73 with standard therapy). Adverse events occurred in 71% of the patients with recombinant ADAMTS13 and in 84% with standard therapy. Adverse events that were considered by investigators to be related to the trial drug occurred in 9% of the patients with recombinant ADAMTS13 and in 48% with standard therapy. Trial-drug interruption or discontinuation due to adverse events occurred in no patients with recombinant ADAMTS13 and in 8 patients with standard therapy. No neutralizing antibodies developed during recombinant ADAMTS13 treatment. The mean maximum ADAMTS13 activity after recombinant ADAMTS13 treatment was 101%, as compared with 19% after standard therapy. CONCLUSIONS During prophylaxis with recombinant ADAMTS13 in patients with congenital TTP, ADAMTS13 activity reached approximately 100% of normal levels, adverse events were generally mild or moderate in severity, and TTP events and manifestations were rare. (Funded by Takeda Development Center Americas and Baxalta Innovations; ClinicalTrials.gov number, NCT03393975.).
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Affiliation(s)
- Marie Scully
- From the Department of Haematology, University College London Hospitals, London (M.S.); the Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta (A.A.); the Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); the Department of Hematology and National Reference Center for Thrombotic Microangiopathies, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris (AP-HP) and Sorbonne Université (P.C.), the Department of Pediatric Nephrology, Robert Debré Hospital, AP-HP and University of Paris (C.D.), and the Department of Pediatric Nephrology, Hôpital Universitaire Necker-Enfants Malades, AP-HP (N.B.) - all in Paris; the Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg (W.-A.H.), and the Section of Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, Universitätsklinikum Jena, Jena (K.K.) - both in Germany; the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematologic Laboratory, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Hematology and Hemotherapy Service, Mother and Child Hospital, Biomedical Research Institute of A Coruña, University Hospital Complex of A Coruña, A Coruña, Spain (M.F.L.-F.); the Department of Blood Transfusion Medicine, Nara Medical University, Kashihara, Japan (M.M.); the Division of Hematology, Department of Medicine, and Department of Pathology, Duke University, Durham, NC (T.L.O.); the Department of Hemostasis Disorders and Internal Medicine, Institute of Hematology and Transfusion Medicine, Warsaw, Poland (J.W.); and Takeda Development Center Americas, Cambridge, MA (I.B., M.C., H.L., B.M., M.P., P.P, S.X., P.Z., L.T.W.)
| | - Ana Antun
- From the Department of Haematology, University College London Hospitals, London (M.S.); the Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta (A.A.); the Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); the Department of Hematology and National Reference Center for Thrombotic Microangiopathies, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris (AP-HP) and Sorbonne Université (P.C.), the Department of Pediatric Nephrology, Robert Debré Hospital, AP-HP and University of Paris (C.D.), and the Department of Pediatric Nephrology, Hôpital Universitaire Necker-Enfants Malades, AP-HP (N.B.) - all in Paris; the Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg (W.-A.H.), and the Section of Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, Universitätsklinikum Jena, Jena (K.K.) - both in Germany; the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematologic Laboratory, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Hematology and Hemotherapy Service, Mother and Child Hospital, Biomedical Research Institute of A Coruña, University Hospital Complex of A Coruña, A Coruña, Spain (M.F.L.-F.); the Department of Blood Transfusion Medicine, Nara Medical University, Kashihara, Japan (M.M.); the Division of Hematology, Department of Medicine, and Department of Pathology, Duke University, Durham, NC (T.L.O.); the Department of Hemostasis Disorders and Internal Medicine, Institute of Hematology and Transfusion Medicine, Warsaw, Poland (J.W.); and Takeda Development Center Americas, Cambridge, MA (I.B., M.C., H.L., B.M., M.P., P.P, S.X., P.Z., L.T.W.)
| | - Spero R Cataland
- From the Department of Haematology, University College London Hospitals, London (M.S.); the Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta (A.A.); the Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); the Department of Hematology and National Reference Center for Thrombotic Microangiopathies, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris (AP-HP) and Sorbonne Université (P.C.), the Department of Pediatric Nephrology, Robert Debré Hospital, AP-HP and University of Paris (C.D.), and the Department of Pediatric Nephrology, Hôpital Universitaire Necker-Enfants Malades, AP-HP (N.B.) - all in Paris; the Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg (W.-A.H.), and the Section of Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, Universitätsklinikum Jena, Jena (K.K.) - both in Germany; the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematologic Laboratory, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Hematology and Hemotherapy Service, Mother and Child Hospital, Biomedical Research Institute of A Coruña, University Hospital Complex of A Coruña, A Coruña, Spain (M.F.L.-F.); the Department of Blood Transfusion Medicine, Nara Medical University, Kashihara, Japan (M.M.); the Division of Hematology, Department of Medicine, and Department of Pathology, Duke University, Durham, NC (T.L.O.); the Department of Hemostasis Disorders and Internal Medicine, Institute of Hematology and Transfusion Medicine, Warsaw, Poland (J.W.); and Takeda Development Center Americas, Cambridge, MA (I.B., M.C., H.L., B.M., M.P., P.P, S.X., P.Z., L.T.W.)
| | - Paul Coppo
- From the Department of Haematology, University College London Hospitals, London (M.S.); the Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta (A.A.); the Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); the Department of Hematology and National Reference Center for Thrombotic Microangiopathies, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris (AP-HP) and Sorbonne Université (P.C.), the Department of Pediatric Nephrology, Robert Debré Hospital, AP-HP and University of Paris (C.D.), and the Department of Pediatric Nephrology, Hôpital Universitaire Necker-Enfants Malades, AP-HP (N.B.) - all in Paris; the Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg (W.-A.H.), and the Section of Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, Universitätsklinikum Jena, Jena (K.K.) - both in Germany; the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematologic Laboratory, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Hematology and Hemotherapy Service, Mother and Child Hospital, Biomedical Research Institute of A Coruña, University Hospital Complex of A Coruña, A Coruña, Spain (M.F.L.-F.); the Department of Blood Transfusion Medicine, Nara Medical University, Kashihara, Japan (M.M.); the Division of Hematology, Department of Medicine, and Department of Pathology, Duke University, Durham, NC (T.L.O.); the Department of Hemostasis Disorders and Internal Medicine, Institute of Hematology and Transfusion Medicine, Warsaw, Poland (J.W.); and Takeda Development Center Americas, Cambridge, MA (I.B., M.C., H.L., B.M., M.P., P.P, S.X., P.Z., L.T.W.)
| | - Claire Dossier
- From the Department of Haematology, University College London Hospitals, London (M.S.); the Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta (A.A.); the Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); the Department of Hematology and National Reference Center for Thrombotic Microangiopathies, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris (AP-HP) and Sorbonne Université (P.C.), the Department of Pediatric Nephrology, Robert Debré Hospital, AP-HP and University of Paris (C.D.), and the Department of Pediatric Nephrology, Hôpital Universitaire Necker-Enfants Malades, AP-HP (N.B.) - all in Paris; the Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg (W.-A.H.), and the Section of Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, Universitätsklinikum Jena, Jena (K.K.) - both in Germany; the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematologic Laboratory, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Hematology and Hemotherapy Service, Mother and Child Hospital, Biomedical Research Institute of A Coruña, University Hospital Complex of A Coruña, A Coruña, Spain (M.F.L.-F.); the Department of Blood Transfusion Medicine, Nara Medical University, Kashihara, Japan (M.M.); the Division of Hematology, Department of Medicine, and Department of Pathology, Duke University, Durham, NC (T.L.O.); the Department of Hemostasis Disorders and Internal Medicine, Institute of Hematology and Transfusion Medicine, Warsaw, Poland (J.W.); and Takeda Development Center Americas, Cambridge, MA (I.B., M.C., H.L., B.M., M.P., P.P, S.X., P.Z., L.T.W.)
| | - Nathalie Biebuyck
- From the Department of Haematology, University College London Hospitals, London (M.S.); the Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta (A.A.); the Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); the Department of Hematology and National Reference Center for Thrombotic Microangiopathies, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris (AP-HP) and Sorbonne Université (P.C.), the Department of Pediatric Nephrology, Robert Debré Hospital, AP-HP and University of Paris (C.D.), and the Department of Pediatric Nephrology, Hôpital Universitaire Necker-Enfants Malades, AP-HP (N.B.) - all in Paris; the Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg (W.-A.H.), and the Section of Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, Universitätsklinikum Jena, Jena (K.K.) - both in Germany; the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematologic Laboratory, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Hematology and Hemotherapy Service, Mother and Child Hospital, Biomedical Research Institute of A Coruña, University Hospital Complex of A Coruña, A Coruña, Spain (M.F.L.-F.); the Department of Blood Transfusion Medicine, Nara Medical University, Kashihara, Japan (M.M.); the Division of Hematology, Department of Medicine, and Department of Pathology, Duke University, Durham, NC (T.L.O.); the Department of Hemostasis Disorders and Internal Medicine, Institute of Hematology and Transfusion Medicine, Warsaw, Poland (J.W.); and Takeda Development Center Americas, Cambridge, MA (I.B., M.C., H.L., B.M., M.P., P.P, S.X., P.Z., L.T.W.)
| | - Wolf-Achim Hassenpflug
- From the Department of Haematology, University College London Hospitals, London (M.S.); the Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta (A.A.); the Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); the Department of Hematology and National Reference Center for Thrombotic Microangiopathies, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris (AP-HP) and Sorbonne Université (P.C.), the Department of Pediatric Nephrology, Robert Debré Hospital, AP-HP and University of Paris (C.D.), and the Department of Pediatric Nephrology, Hôpital Universitaire Necker-Enfants Malades, AP-HP (N.B.) - all in Paris; the Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg (W.-A.H.), and the Section of Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, Universitätsklinikum Jena, Jena (K.K.) - both in Germany; the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematologic Laboratory, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Hematology and Hemotherapy Service, Mother and Child Hospital, Biomedical Research Institute of A Coruña, University Hospital Complex of A Coruña, A Coruña, Spain (M.F.L.-F.); the Department of Blood Transfusion Medicine, Nara Medical University, Kashihara, Japan (M.M.); the Division of Hematology, Department of Medicine, and Department of Pathology, Duke University, Durham, NC (T.L.O.); the Department of Hemostasis Disorders and Internal Medicine, Institute of Hematology and Transfusion Medicine, Warsaw, Poland (J.W.); and Takeda Development Center Americas, Cambridge, MA (I.B., M.C., H.L., B.M., M.P., P.P, S.X., P.Z., L.T.W.)
| | - Karim Kentouche
- From the Department of Haematology, University College London Hospitals, London (M.S.); the Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta (A.A.); the Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); the Department of Hematology and National Reference Center for Thrombotic Microangiopathies, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris (AP-HP) and Sorbonne Université (P.C.), the Department of Pediatric Nephrology, Robert Debré Hospital, AP-HP and University of Paris (C.D.), and the Department of Pediatric Nephrology, Hôpital Universitaire Necker-Enfants Malades, AP-HP (N.B.) - all in Paris; the Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg (W.-A.H.), and the Section of Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, Universitätsklinikum Jena, Jena (K.K.) - both in Germany; the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematologic Laboratory, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Hematology and Hemotherapy Service, Mother and Child Hospital, Biomedical Research Institute of A Coruña, University Hospital Complex of A Coruña, A Coruña, Spain (M.F.L.-F.); the Department of Blood Transfusion Medicine, Nara Medical University, Kashihara, Japan (M.M.); the Division of Hematology, Department of Medicine, and Department of Pathology, Duke University, Durham, NC (T.L.O.); the Department of Hemostasis Disorders and Internal Medicine, Institute of Hematology and Transfusion Medicine, Warsaw, Poland (J.W.); and Takeda Development Center Americas, Cambridge, MA (I.B., M.C., H.L., B.M., M.P., P.P, S.X., P.Z., L.T.W.)
| | - Paul Knöbl
- From the Department of Haematology, University College London Hospitals, London (M.S.); the Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta (A.A.); the Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); the Department of Hematology and National Reference Center for Thrombotic Microangiopathies, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris (AP-HP) and Sorbonne Université (P.C.), the Department of Pediatric Nephrology, Robert Debré Hospital, AP-HP and University of Paris (C.D.), and the Department of Pediatric Nephrology, Hôpital Universitaire Necker-Enfants Malades, AP-HP (N.B.) - all in Paris; the Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg (W.-A.H.), and the Section of Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, Universitätsklinikum Jena, Jena (K.K.) - both in Germany; the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematologic Laboratory, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Hematology and Hemotherapy Service, Mother and Child Hospital, Biomedical Research Institute of A Coruña, University Hospital Complex of A Coruña, A Coruña, Spain (M.F.L.-F.); the Department of Blood Transfusion Medicine, Nara Medical University, Kashihara, Japan (M.M.); the Division of Hematology, Department of Medicine, and Department of Pathology, Duke University, Durham, NC (T.L.O.); the Department of Hemostasis Disorders and Internal Medicine, Institute of Hematology and Transfusion Medicine, Warsaw, Poland (J.W.); and Takeda Development Center Americas, Cambridge, MA (I.B., M.C., H.L., B.M., M.P., P.P, S.X., P.Z., L.T.W.)
| | - Johanna A Kremer Hovinga
- From the Department of Haematology, University College London Hospitals, London (M.S.); the Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta (A.A.); the Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); the Department of Hematology and National Reference Center for Thrombotic Microangiopathies, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris (AP-HP) and Sorbonne Université (P.C.), the Department of Pediatric Nephrology, Robert Debré Hospital, AP-HP and University of Paris (C.D.), and the Department of Pediatric Nephrology, Hôpital Universitaire Necker-Enfants Malades, AP-HP (N.B.) - all in Paris; the Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg (W.-A.H.), and the Section of Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, Universitätsklinikum Jena, Jena (K.K.) - both in Germany; the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematologic Laboratory, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Hematology and Hemotherapy Service, Mother and Child Hospital, Biomedical Research Institute of A Coruña, University Hospital Complex of A Coruña, A Coruña, Spain (M.F.L.-F.); the Department of Blood Transfusion Medicine, Nara Medical University, Kashihara, Japan (M.M.); the Division of Hematology, Department of Medicine, and Department of Pathology, Duke University, Durham, NC (T.L.O.); the Department of Hemostasis Disorders and Internal Medicine, Institute of Hematology and Transfusion Medicine, Warsaw, Poland (J.W.); and Takeda Development Center Americas, Cambridge, MA (I.B., M.C., H.L., B.M., M.P., P.P, S.X., P.Z., L.T.W.)
| | - M Fernanda López-Fernández
- From the Department of Haematology, University College London Hospitals, London (M.S.); the Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta (A.A.); the Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); the Department of Hematology and National Reference Center for Thrombotic Microangiopathies, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris (AP-HP) and Sorbonne Université (P.C.), the Department of Pediatric Nephrology, Robert Debré Hospital, AP-HP and University of Paris (C.D.), and the Department of Pediatric Nephrology, Hôpital Universitaire Necker-Enfants Malades, AP-HP (N.B.) - all in Paris; the Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg (W.-A.H.), and the Section of Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, Universitätsklinikum Jena, Jena (K.K.) - both in Germany; the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematologic Laboratory, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Hematology and Hemotherapy Service, Mother and Child Hospital, Biomedical Research Institute of A Coruña, University Hospital Complex of A Coruña, A Coruña, Spain (M.F.L.-F.); the Department of Blood Transfusion Medicine, Nara Medical University, Kashihara, Japan (M.M.); the Division of Hematology, Department of Medicine, and Department of Pathology, Duke University, Durham, NC (T.L.O.); the Department of Hemostasis Disorders and Internal Medicine, Institute of Hematology and Transfusion Medicine, Warsaw, Poland (J.W.); and Takeda Development Center Americas, Cambridge, MA (I.B., M.C., H.L., B.M., M.P., P.P, S.X., P.Z., L.T.W.)
| | - Masanori Matsumoto
- From the Department of Haematology, University College London Hospitals, London (M.S.); the Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta (A.A.); the Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); the Department of Hematology and National Reference Center for Thrombotic Microangiopathies, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris (AP-HP) and Sorbonne Université (P.C.), the Department of Pediatric Nephrology, Robert Debré Hospital, AP-HP and University of Paris (C.D.), and the Department of Pediatric Nephrology, Hôpital Universitaire Necker-Enfants Malades, AP-HP (N.B.) - all in Paris; the Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg (W.-A.H.), and the Section of Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, Universitätsklinikum Jena, Jena (K.K.) - both in Germany; the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematologic Laboratory, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Hematology and Hemotherapy Service, Mother and Child Hospital, Biomedical Research Institute of A Coruña, University Hospital Complex of A Coruña, A Coruña, Spain (M.F.L.-F.); the Department of Blood Transfusion Medicine, Nara Medical University, Kashihara, Japan (M.M.); the Division of Hematology, Department of Medicine, and Department of Pathology, Duke University, Durham, NC (T.L.O.); the Department of Hemostasis Disorders and Internal Medicine, Institute of Hematology and Transfusion Medicine, Warsaw, Poland (J.W.); and Takeda Development Center Americas, Cambridge, MA (I.B., M.C., H.L., B.M., M.P., P.P, S.X., P.Z., L.T.W.)
| | - Thomas L Ortel
- From the Department of Haematology, University College London Hospitals, London (M.S.); the Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta (A.A.); the Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); the Department of Hematology and National Reference Center for Thrombotic Microangiopathies, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris (AP-HP) and Sorbonne Université (P.C.), the Department of Pediatric Nephrology, Robert Debré Hospital, AP-HP and University of Paris (C.D.), and the Department of Pediatric Nephrology, Hôpital Universitaire Necker-Enfants Malades, AP-HP (N.B.) - all in Paris; the Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg (W.-A.H.), and the Section of Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, Universitätsklinikum Jena, Jena (K.K.) - both in Germany; the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematologic Laboratory, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Hematology and Hemotherapy Service, Mother and Child Hospital, Biomedical Research Institute of A Coruña, University Hospital Complex of A Coruña, A Coruña, Spain (M.F.L.-F.); the Department of Blood Transfusion Medicine, Nara Medical University, Kashihara, Japan (M.M.); the Division of Hematology, Department of Medicine, and Department of Pathology, Duke University, Durham, NC (T.L.O.); the Department of Hemostasis Disorders and Internal Medicine, Institute of Hematology and Transfusion Medicine, Warsaw, Poland (J.W.); and Takeda Development Center Americas, Cambridge, MA (I.B., M.C., H.L., B.M., M.P., P.P, S.X., P.Z., L.T.W.)
| | - Jerzy Windyga
- From the Department of Haematology, University College London Hospitals, London (M.S.); the Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta (A.A.); the Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); the Department of Hematology and National Reference Center for Thrombotic Microangiopathies, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris (AP-HP) and Sorbonne Université (P.C.), the Department of Pediatric Nephrology, Robert Debré Hospital, AP-HP and University of Paris (C.D.), and the Department of Pediatric Nephrology, Hôpital Universitaire Necker-Enfants Malades, AP-HP (N.B.) - all in Paris; the Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg (W.-A.H.), and the Section of Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, Universitätsklinikum Jena, Jena (K.K.) - both in Germany; the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematologic Laboratory, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Hematology and Hemotherapy Service, Mother and Child Hospital, Biomedical Research Institute of A Coruña, University Hospital Complex of A Coruña, A Coruña, Spain (M.F.L.-F.); the Department of Blood Transfusion Medicine, Nara Medical University, Kashihara, Japan (M.M.); the Division of Hematology, Department of Medicine, and Department of Pathology, Duke University, Durham, NC (T.L.O.); the Department of Hemostasis Disorders and Internal Medicine, Institute of Hematology and Transfusion Medicine, Warsaw, Poland (J.W.); and Takeda Development Center Americas, Cambridge, MA (I.B., M.C., H.L., B.M., M.P., P.P, S.X., P.Z., L.T.W.)
| | - Indranil Bhattacharya
- From the Department of Haematology, University College London Hospitals, London (M.S.); the Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta (A.A.); the Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); the Department of Hematology and National Reference Center for Thrombotic Microangiopathies, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris (AP-HP) and Sorbonne Université (P.C.), the Department of Pediatric Nephrology, Robert Debré Hospital, AP-HP and University of Paris (C.D.), and the Department of Pediatric Nephrology, Hôpital Universitaire Necker-Enfants Malades, AP-HP (N.B.) - all in Paris; the Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg (W.-A.H.), and the Section of Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, Universitätsklinikum Jena, Jena (K.K.) - both in Germany; the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematologic Laboratory, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Hematology and Hemotherapy Service, Mother and Child Hospital, Biomedical Research Institute of A Coruña, University Hospital Complex of A Coruña, A Coruña, Spain (M.F.L.-F.); the Department of Blood Transfusion Medicine, Nara Medical University, Kashihara, Japan (M.M.); the Division of Hematology, Department of Medicine, and Department of Pathology, Duke University, Durham, NC (T.L.O.); the Department of Hemostasis Disorders and Internal Medicine, Institute of Hematology and Transfusion Medicine, Warsaw, Poland (J.W.); and Takeda Development Center Americas, Cambridge, MA (I.B., M.C., H.L., B.M., M.P., P.P, S.X., P.Z., L.T.W.)
| | - Michael Cronin
- From the Department of Haematology, University College London Hospitals, London (M.S.); the Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta (A.A.); the Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); the Department of Hematology and National Reference Center for Thrombotic Microangiopathies, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris (AP-HP) and Sorbonne Université (P.C.), the Department of Pediatric Nephrology, Robert Debré Hospital, AP-HP and University of Paris (C.D.), and the Department of Pediatric Nephrology, Hôpital Universitaire Necker-Enfants Malades, AP-HP (N.B.) - all in Paris; the Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg (W.-A.H.), and the Section of Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, Universitätsklinikum Jena, Jena (K.K.) - both in Germany; the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematologic Laboratory, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Hematology and Hemotherapy Service, Mother and Child Hospital, Biomedical Research Institute of A Coruña, University Hospital Complex of A Coruña, A Coruña, Spain (M.F.L.-F.); the Department of Blood Transfusion Medicine, Nara Medical University, Kashihara, Japan (M.M.); the Division of Hematology, Department of Medicine, and Department of Pathology, Duke University, Durham, NC (T.L.O.); the Department of Hemostasis Disorders and Internal Medicine, Institute of Hematology and Transfusion Medicine, Warsaw, Poland (J.W.); and Takeda Development Center Americas, Cambridge, MA (I.B., M.C., H.L., B.M., M.P., P.P, S.X., P.Z., L.T.W.)
| | - Hong Li
- From the Department of Haematology, University College London Hospitals, London (M.S.); the Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta (A.A.); the Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); the Department of Hematology and National Reference Center for Thrombotic Microangiopathies, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris (AP-HP) and Sorbonne Université (P.C.), the Department of Pediatric Nephrology, Robert Debré Hospital, AP-HP and University of Paris (C.D.), and the Department of Pediatric Nephrology, Hôpital Universitaire Necker-Enfants Malades, AP-HP (N.B.) - all in Paris; the Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg (W.-A.H.), and the Section of Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, Universitätsklinikum Jena, Jena (K.K.) - both in Germany; the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematologic Laboratory, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Hematology and Hemotherapy Service, Mother and Child Hospital, Biomedical Research Institute of A Coruña, University Hospital Complex of A Coruña, A Coruña, Spain (M.F.L.-F.); the Department of Blood Transfusion Medicine, Nara Medical University, Kashihara, Japan (M.M.); the Division of Hematology, Department of Medicine, and Department of Pathology, Duke University, Durham, NC (T.L.O.); the Department of Hemostasis Disorders and Internal Medicine, Institute of Hematology and Transfusion Medicine, Warsaw, Poland (J.W.); and Takeda Development Center Americas, Cambridge, MA (I.B., M.C., H.L., B.M., M.P., P.P, S.X., P.Z., L.T.W.)
| | - Björn Mellgård
- From the Department of Haematology, University College London Hospitals, London (M.S.); the Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta (A.A.); the Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); the Department of Hematology and National Reference Center for Thrombotic Microangiopathies, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris (AP-HP) and Sorbonne Université (P.C.), the Department of Pediatric Nephrology, Robert Debré Hospital, AP-HP and University of Paris (C.D.), and the Department of Pediatric Nephrology, Hôpital Universitaire Necker-Enfants Malades, AP-HP (N.B.) - all in Paris; the Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg (W.-A.H.), and the Section of Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, Universitätsklinikum Jena, Jena (K.K.) - both in Germany; the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematologic Laboratory, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Hematology and Hemotherapy Service, Mother and Child Hospital, Biomedical Research Institute of A Coruña, University Hospital Complex of A Coruña, A Coruña, Spain (M.F.L.-F.); the Department of Blood Transfusion Medicine, Nara Medical University, Kashihara, Japan (M.M.); the Division of Hematology, Department of Medicine, and Department of Pathology, Duke University, Durham, NC (T.L.O.); the Department of Hemostasis Disorders and Internal Medicine, Institute of Hematology and Transfusion Medicine, Warsaw, Poland (J.W.); and Takeda Development Center Americas, Cambridge, MA (I.B., M.C., H.L., B.M., M.P., P.P, S.X., P.Z., L.T.W.)
| | - Munjal Patel
- From the Department of Haematology, University College London Hospitals, London (M.S.); the Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta (A.A.); the Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); the Department of Hematology and National Reference Center for Thrombotic Microangiopathies, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris (AP-HP) and Sorbonne Université (P.C.), the Department of Pediatric Nephrology, Robert Debré Hospital, AP-HP and University of Paris (C.D.), and the Department of Pediatric Nephrology, Hôpital Universitaire Necker-Enfants Malades, AP-HP (N.B.) - all in Paris; the Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg (W.-A.H.), and the Section of Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, Universitätsklinikum Jena, Jena (K.K.) - both in Germany; the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematologic Laboratory, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Hematology and Hemotherapy Service, Mother and Child Hospital, Biomedical Research Institute of A Coruña, University Hospital Complex of A Coruña, A Coruña, Spain (M.F.L.-F.); the Department of Blood Transfusion Medicine, Nara Medical University, Kashihara, Japan (M.M.); the Division of Hematology, Department of Medicine, and Department of Pathology, Duke University, Durham, NC (T.L.O.); the Department of Hemostasis Disorders and Internal Medicine, Institute of Hematology and Transfusion Medicine, Warsaw, Poland (J.W.); and Takeda Development Center Americas, Cambridge, MA (I.B., M.C., H.L., B.M., M.P., P.P, S.X., P.Z., L.T.W.)
| | - Parth Patwari
- From the Department of Haematology, University College London Hospitals, London (M.S.); the Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta (A.A.); the Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); the Department of Hematology and National Reference Center for Thrombotic Microangiopathies, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris (AP-HP) and Sorbonne Université (P.C.), the Department of Pediatric Nephrology, Robert Debré Hospital, AP-HP and University of Paris (C.D.), and the Department of Pediatric Nephrology, Hôpital Universitaire Necker-Enfants Malades, AP-HP (N.B.) - all in Paris; the Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg (W.-A.H.), and the Section of Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, Universitätsklinikum Jena, Jena (K.K.) - both in Germany; the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematologic Laboratory, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Hematology and Hemotherapy Service, Mother and Child Hospital, Biomedical Research Institute of A Coruña, University Hospital Complex of A Coruña, A Coruña, Spain (M.F.L.-F.); the Department of Blood Transfusion Medicine, Nara Medical University, Kashihara, Japan (M.M.); the Division of Hematology, Department of Medicine, and Department of Pathology, Duke University, Durham, NC (T.L.O.); the Department of Hemostasis Disorders and Internal Medicine, Institute of Hematology and Transfusion Medicine, Warsaw, Poland (J.W.); and Takeda Development Center Americas, Cambridge, MA (I.B., M.C., H.L., B.M., M.P., P.P, S.X., P.Z., L.T.W.)
| | - Shan Xiao
- From the Department of Haematology, University College London Hospitals, London (M.S.); the Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta (A.A.); the Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); the Department of Hematology and National Reference Center for Thrombotic Microangiopathies, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris (AP-HP) and Sorbonne Université (P.C.), the Department of Pediatric Nephrology, Robert Debré Hospital, AP-HP and University of Paris (C.D.), and the Department of Pediatric Nephrology, Hôpital Universitaire Necker-Enfants Malades, AP-HP (N.B.) - all in Paris; the Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg (W.-A.H.), and the Section of Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, Universitätsklinikum Jena, Jena (K.K.) - both in Germany; the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematologic Laboratory, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Hematology and Hemotherapy Service, Mother and Child Hospital, Biomedical Research Institute of A Coruña, University Hospital Complex of A Coruña, A Coruña, Spain (M.F.L.-F.); the Department of Blood Transfusion Medicine, Nara Medical University, Kashihara, Japan (M.M.); the Division of Hematology, Department of Medicine, and Department of Pathology, Duke University, Durham, NC (T.L.O.); the Department of Hemostasis Disorders and Internal Medicine, Institute of Hematology and Transfusion Medicine, Warsaw, Poland (J.W.); and Takeda Development Center Americas, Cambridge, MA (I.B., M.C., H.L., B.M., M.P., P.P, S.X., P.Z., L.T.W.)
| | - Pinghai Zhang
- From the Department of Haematology, University College London Hospitals, London (M.S.); the Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta (A.A.); the Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); the Department of Hematology and National Reference Center for Thrombotic Microangiopathies, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris (AP-HP) and Sorbonne Université (P.C.), the Department of Pediatric Nephrology, Robert Debré Hospital, AP-HP and University of Paris (C.D.), and the Department of Pediatric Nephrology, Hôpital Universitaire Necker-Enfants Malades, AP-HP (N.B.) - all in Paris; the Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg (W.-A.H.), and the Section of Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, Universitätsklinikum Jena, Jena (K.K.) - both in Germany; the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematologic Laboratory, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Hematology and Hemotherapy Service, Mother and Child Hospital, Biomedical Research Institute of A Coruña, University Hospital Complex of A Coruña, A Coruña, Spain (M.F.L.-F.); the Department of Blood Transfusion Medicine, Nara Medical University, Kashihara, Japan (M.M.); the Division of Hematology, Department of Medicine, and Department of Pathology, Duke University, Durham, NC (T.L.O.); the Department of Hemostasis Disorders and Internal Medicine, Institute of Hematology and Transfusion Medicine, Warsaw, Poland (J.W.); and Takeda Development Center Americas, Cambridge, MA (I.B., M.C., H.L., B.M., M.P., P.P, S.X., P.Z., L.T.W.)
| | - Linda T Wang
- From the Department of Haematology, University College London Hospitals, London (M.S.); the Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta (A.A.); the Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); the Department of Hematology and National Reference Center for Thrombotic Microangiopathies, Hôpital Saint-Antoine, Assistance Publique-Hôpitaux de Paris (AP-HP) and Sorbonne Université (P.C.), the Department of Pediatric Nephrology, Robert Debré Hospital, AP-HP and University of Paris (C.D.), and the Department of Pediatric Nephrology, Hôpital Universitaire Necker-Enfants Malades, AP-HP (N.B.) - all in Paris; the Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg (W.-A.H.), and the Section of Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, Universitätsklinikum Jena, Jena (K.K.) - both in Germany; the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematologic Laboratory, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Hematology and Hemotherapy Service, Mother and Child Hospital, Biomedical Research Institute of A Coruña, University Hospital Complex of A Coruña, A Coruña, Spain (M.F.L.-F.); the Department of Blood Transfusion Medicine, Nara Medical University, Kashihara, Japan (M.M.); the Division of Hematology, Department of Medicine, and Department of Pathology, Duke University, Durham, NC (T.L.O.); the Department of Hemostasis Disorders and Internal Medicine, Institute of Hematology and Transfusion Medicine, Warsaw, Poland (J.W.); and Takeda Development Center Americas, Cambridge, MA (I.B., M.C., H.L., B.M., M.P., P.P, S.X., P.Z., L.T.W.)
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Lämmle B, Vanhoorelbeke K, Kremer Hovinga JA, Knöbl P. 100 Years of Thrombotic Thrombocytopenic Purpura: A Story of Death and Life. Hamostaseologie 2024; 44:59-73. [PMID: 38417804 DOI: 10.1055/a-2223-9484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2024] Open
Abstract
One hundred years ago, in 1924, the first description of a patient with a disease, now known as thrombotic thrombocytopenic purpura (TTP) was published by Dr. Eli Moschcowitz. In honor of this report, this article, written by distinguished specialists in TTP, reviews the increase in scientific knowledge on this disease during the last 100 years. It covers the scientific progress from plasma therapy, the first beneficial treatment for TTP, to the elucidation of the pathophysiology, the discovery of ADAMTS13, the development of assays and targeted therapies up to the modern treatment concepts, that improved the outcome of TTP from an incurable disease to a well understood and treatable disorder.
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Affiliation(s)
- Bernhard Lämmle
- Center for Thrombosis and Hemostasis, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
- Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Karen Vanhoorelbeke
- Laboratory for Thrombosis Research, Interdisciplinary Research Facility Life Sciences, Katholieke Universiteit Leuven Campus Kulak Kortrijk, Kortrijk, Belgium
| | - Johanna A Kremer Hovinga
- Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Paul Knöbl
- Department of Medicine 1, Division for Hematology and Hemostasis, Medical University of Vienna, Vienna, Austria
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Tiede A, Hart C, Knöbl P, Greil R, Oldenburg J, Sachs UJ, Miesbach W, Pfrepper C, Trautmann-Grill K, Holstein K, Pilch J, Möhnle P, Schindler C, Weigt C, Schipp D, May M, Dobbelstein C, Pelzer FJ, Werwitzke S, Klamroth R. Emicizumab prophylaxis in patients with acquired haemophilia A (GTH-AHA-EMI): an open-label, single-arm, multicentre, phase 2 study. Lancet Haematol 2023; 10:e913-e921. [PMID: 37858328 DOI: 10.1016/s2352-3026(23)00280-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 09/10/2023] [Accepted: 09/11/2023] [Indexed: 10/21/2023]
Abstract
BACKGROUND Acquired haemophilia A is caused by neutralising autoantibodies against coagulation factor VIII, leading to severe bleeding. Standard treatment involves immunosuppressive therapy, which is associated with adverse events and mortality in the frail population of patients with acquired haemophilia A. This study investigated whether emicizumab, a factor VIIIa mimetic antibody, protects patients with acquired haemophilia A from bleeding and allows deferral of immunosuppression during the first 12 weeks after diagnosis. METHODS We report final results of an open-label, single-arm, phase 2 clinical trial. Adult patients with acquired haemophilia A from 16 haemophilia treatment centres in Germany and Austria were eligible if they had not previously received immunosuppression. Patients received emicizumab subcutaneously (6 and 3 mg/kg on days 1 and 2, 1·5 mg/kg weekly until week 12), but no immunosuppression. Follow-up was until week 24. The primary endpoint was the number of clinically relevant bleeds per patient-week until week 12. Emicizumab was considered effective if the mean bleeding rate was significantly below 0·15 bleeds per patient-week, the rate observed in a previous study of patients with acquired haemophilia A treated with bypassing agents and immunosuppression but no emicizumab. The study is registered with clinicaltrials.gov, NCT04188639 and is complete. FINDINGS Of 49 patients screened from March 25, 2021, to June 10, 2022, 47 were enrolled (23 women, 24 men). Median age was 76 years (IQR 66-80), 46 (98%) of 47 patients were White, median factor VIII activity was 1·4 IU/dL (0·3-5·6), and median inhibitor concentration was 11·4 Bethesda units per mL (3·9-42·7). Mean breakthrough bleeding rate was 0·04 bleeds per patient-week (upper 97·5% CI 0·06). 33 (70%) of 47 patients had no bleeding events, seven patients (15%) had one bleed, six patients (13%) had two bleeds, and one patient (2%) had three bleeds. Adverse events of grade 3 or worse included COVID-19 (n=2), acute kidney injury (n=2), and stroke (n=1). Four of 47 patients died, including two deaths related to bleeding, one from COVID-19, and one from cardiac arrest (none were judged as related to emicizumab). INTERPRETATION This study suggests that emicizumab prophylaxis prevents bleeding in patients with acquired haemophilia A and that immunosuppressive therapy can be deferred while patients are receiving this treatment. The low number of thromboembolic events, severe infections, and fatalities observed in this study are promising. FUNDING This study was supported by funding from Hoffman-La Roche.
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Affiliation(s)
- Andreas Tiede
- Hematology, Hemostasis, Oncology, and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany.
| | - Christina Hart
- Department of Hematology and Oncology, University Hospital Regensburg, Regensburg, Germany
| | - Paul Knöbl
- Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna, Austria
| | - Richard Greil
- Medical Department III, Paracelsus Medical University Salzburg, Salzburg, Austria; Salzburg Cancer Research Institute-CCCIT Salzburg, Austria; Cancer Cluster Salzburg, Salzburg, Austria
| | - Johannes Oldenburg
- Institute of Experimental Hematology and Transfusion Medicine, University Clinic Bonn, Bonn, Germany
| | - Ulrich J Sachs
- Department of Thrombosis and Haemostasis, Giessen University Hospital, Giessen, Germany
| | | | - Christian Pfrepper
- Division of Hemostaseology, Medical Department I, University Hospital Leipzig, Leipzig, Germany
| | | | - Katharina Holstein
- Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Jan Pilch
- Clinical Hemostaseology and Transfusion Medicine, Saarland University Hospital, Homburg/Saar, Germany
| | - Patrick Möhnle
- Division of Transfusion Medicine, Cell Therapeutics and Haemostaseology, University Hospital, Ludwig Maximilian University, Munich, Germany
| | | | | | | | - Marcus May
- Hematology, Hemostasis, Oncology, and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Christiane Dobbelstein
- Hematology, Hemostasis, Oncology, and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Fabius J Pelzer
- Hematology, Hemostasis, Oncology, and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Sonja Werwitzke
- Hematology, Hemostasis, Oncology, and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Robert Klamroth
- Internal Medicine, Vascular Medicine and Coagulation Disorders, Vivantes Clinic Friedrichshain, Berlin, Germany
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Gelbenegger G, Traby L, Rahimi N, Knöbl P. Management of acquired haemophilia A in severe Covid-19: Haemostatic bridging with emicizumab to keep the balance between bleeding and thrombosis. Br J Clin Pharmacol 2023; 89:908-913. [PMID: 36369653 PMCID: PMC9877795 DOI: 10.1111/bcp.15598] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 08/05/2022] [Accepted: 11/06/2022] [Indexed: 11/15/2022] Open
Abstract
Acquired haemophilia A (AHA) is an autoimmune bleeding disorder caused by autoantibodies blocking coagulation factor VIII (FVIII). Haemostatic management of AHA and concomitant thrombotic risk is difficult. We cover the management of a 75-year-old male with severe Covid-19, a prothrombotic disease, and de novo AHA with severe muscle bleeding, a disease requiring highly thrombogenic haemostatic therapy and immunosuppression-a challenging combination. FVIII activity was measured using human and bovine reagents to differentiate between endo- and exogenous FVIII activity. For haemostatic control, recombinant human activated FVII was given, followed by emicizumab, as a less thrombogenic long-term haemostatic agent. Steroids were used as initial immunosuppressive therapy. Later, rituximab was used for inhibitor eradication. No thromboembolic events occurred, and bleeding was effectively controlled. Emicizumab achieved haemostatic balance in a patient under haemorrhagic and thrombogenic conditions. Individual risk assessment is needed to guide treatment decisions in patients threatened by simultaneous bleeding and thrombosis.
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Affiliation(s)
- Georg Gelbenegger
- Department of Clinical PharmacologyMedical University of ViennaViennaAustria
| | - Ludwig Traby
- Department of Medicine I, Division of Infectious Diseases and Tropical MedicineMedical University of ViennaViennaAustria
| | - Nina Rahimi
- Department of Medicine I, Division of Infectious Diseases and Tropical MedicineMedical University of ViennaViennaAustria
| | - Paul Knöbl
- Department of Medicine I, Division of Hematology and HemostasisMedical University of ViennaViennaAustria
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Scully M, de la Rubia J, Pavenski K, Metjian A, Knöbl P, Peyvandi F, Cataland S, Coppo P, Kremer Hovinga JA, Minkue Mi Edou J, De Passos Sousa R, Callewaert F, Gunawardena S, Lin J. Long-term follow-up of patients treated with caplacizumab and safety and efficacy of repeat caplacizumab use: Post-HERCULES study. J Thromb Haemost 2022; 20:2810-2822. [PMID: 36138517 PMCID: PMC9827931 DOI: 10.1111/jth.15892] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 08/10/2022] [Accepted: 09/19/2022] [Indexed: 01/13/2023]
Abstract
INTRODUCTION Caplacizumab demonstrated efficacy and safety in patients with immune-mediated thrombotic thrombocytopenic purpura (iTTP) in the phase 3 HERCULES trial. However, data on long-term outcomes following caplacizumab treatment are limited. OBJECTIVES The post-HERCULES trial (NCT02878603) evaluated long-term outcomes of patients with iTTP treated with caplacizumab in HERCULES and safety and efficacy of repeated caplacizumab use. PATIENTS/METHODS Over 3 years of follow-up, patients could receive open-label caplacizumab with therapeutic plasma exchange (TPE) and immunosuppressive therapy (IST) in case of recurrence. Adverse events (AEs) were assessed during the overall study period (intention-to-observe [ITO] population) and during recurrences (recurrence population). TTP-related events (TTP-related death, recurrence, major thromboembolic events) were assessed in the efficacy ITO population (patients without recurrence during HERCULES or before post-HERCULES). RESULTS Among 104 enrolled patients, incidences of AEs and serious AEs were similar between patients who had received caplacizumab + TPE + IST during HERCULES (n = 75) and those treated with placebo + TPE + IST (placebo; n = 29). TTP-related events occurred in 8% of patients (4/49) randomized to caplacizumab during HERCULES versus 38% (11/29) randomized to placebo. Nineteen patients had ≥1 recurrence; 13 of these were treated with caplacizumab. The first recurrence episode was resolved or resolving for all patients treated with caplacizumab, including nine patients with repeat caplacizumab use. All second recurrences (6/6) were resolved. Safety profile of caplacizumab for treatment of recurrence was consistent with HERCULES; most bleeding events were nonserious. No major cases of organ dysfunction were observed. CONCLUSIONS Long-term follow-up supports the safety and efficacy of caplacizumab for iTTP and its repeated use for recurrences.
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Affiliation(s)
- Marie Scully
- Department of HaematologyUCLH and NIHR Cardiometabolic BRC, UCLH/UCLLondonUK
- University College London HospitalsLondonUK
| | - Javier de la Rubia
- Hematology Department, Internal MedicineSchool of Medicine and Dentistry, Catholic University of Valencia and Hospital LA FEValenciaSpain
| | - Katerina Pavenski
- Departments of Medicine and Laboratory MedicineSt. Michael's Hospital and University of TorontoTorontoOntarioCanada
| | - Ara Metjian
- Division of Hematology, Department of MedicineUniversity of Colorado–Anschutz Medical CenterDenverColoradoUSA
| | - Paul Knöbl
- Division of Hematology and Hemostasis, Department of Medicine 1Medical University of ViennaViennaAustria
| | - Flora Peyvandi
- Department of Pathophysiology and TransplantationFondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center and Università degli Studi di MilanoMilanItaly
| | - Spero Cataland
- Department of Internal MedicineOhio State UniversityColumbusOhioUSA
| | - Paul Coppo
- Department of HematologyReference Center for Thrombotic Microangiopathies (CNR‐MAT), Saint‐Antoine University Hospital, AP‐HPParisFrance
| | - Johanna A. Kremer Hovinga
- Department of Hematology and Central Hematology LaboratoryInselspital, Bern University Hospital, University of BernBernSwitzerland
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6
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Wiegele M, Laxar D, Schaden E, Baierl A, Maleczek M, Knöbl P, Hermann M, Hermann A, Zauner C, Gratz J. Subcutaneous Enoxaparin for Systemic Anticoagulation of COVID-19 Patients During Extracorporeal Life Support. Front Med (Lausanne) 2022; 9:879425. [PMID: 35899208 PMCID: PMC9309531 DOI: 10.3389/fmed.2022.879425] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Accepted: 06/22/2022] [Indexed: 12/11/2022] Open
Abstract
Background Extracorporeal membrane oxygenation, with an inherent requirement for anticoagulation to avoid circuit thrombosis, is a key element in the treatment of respiratory failure associated with COVID-19. Anticoagulation remains challenging, the standard of care being intravenous continuous administration of unfractionated heparin. Yet regimens vary. Some intensive care units in our center have successfully used enoxaparin subcutaneously in recent years and throughout the pandemic. Methods We retrospectively analyzed adult COVID-19 patients with respiratory failure who had been systemically anticoagulated using either enoxaparin or unfractionated heparin. The choice of anticoagulant therapy was based on the standard of the intensive care unit. Defined thromboembolic and hemorrhagic events were analyzed as study endpoints. Results Of 98 patients, 62 had received enoxaparin and 36 unfractionated heparin. All hazard ratios for the thromboembolic (3.43; 95% CI: 1.08–10.87; p = 0.04), hemorrhagic (2.58; 95% CI: 1.03–6.48; p = 0.04), and composite (2.86; 95% CI: 1.41–5.92; p = 0.007) endpoints favored enoxaparin, whose efficient administration was verified by peak levels of anti-factor Xa (median: 0.45 IU ml−1; IQR: 0.38; 0.56). Activated partial thromboplastin time as well as thrombin time differed significantly (both p<0.001) between groups mirroring the effect of unfractionated heparin. Conclusions This study demonstrates the successful use of subcutaneous enoxaparin for systemic anticoagulation in patients with COVID-19 during extracorporeal membrane oxygenation. Our findings are to be confirmed by future prospective, randomized, controlled trials.
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Affiliation(s)
- Marion Wiegele
- Department of Anesthesia, Intensive Care Medicine and Pain Medicine, Medical University of Vienna, Vienna, Austria
| | - Daniel Laxar
- Ludwig Boltzmann Institute Digital Health and Patient Safety, Medical University of Vienna, Vienna, Austria
| | - Eva Schaden
- Department of Anesthesia, Intensive Care Medicine and Pain Medicine, Medical University of Vienna, Vienna, Austria.,Ludwig Boltzmann Institute Digital Health and Patient Safety, Medical University of Vienna, Vienna, Austria
| | - Andreas Baierl
- Department of Statistics and Operations Research University of Vienna, Vienna, Austria
| | - Mathias Maleczek
- Department of Anesthesia, Intensive Care Medicine and Pain Medicine, Medical University of Vienna, Vienna, Austria.,Ludwig Boltzmann Institute Digital Health and Patient Safety, Medical University of Vienna, Vienna, Austria
| | - Paul Knöbl
- Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | - Martina Hermann
- Department of Anesthesia, Intensive Care Medicine and Pain Medicine, Medical University of Vienna, Vienna, Austria.,Ludwig Boltzmann Institute Digital Health and Patient Safety, Medical University of Vienna, Vienna, Austria
| | - Alexander Hermann
- Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | - Christian Zauner
- Department of Medicine III, Medical University of Vienna, Vienna, Austria
| | - Johannes Gratz
- Department of Anesthesia, Intensive Care Medicine and Pain Medicine, Medical University of Vienna, Vienna, Austria
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7
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Kühne L, Kaufeld J, Völker LA, Wendt R, Schönermarck U, Hägele H, Osterholt T, Eichenauer DA, Bieringer M, von Bergwelt-Baildon A, Fischereder M, Buxhofer-Ausch V, Menne J, Brinkkoetter PT, Knöbl P. Alternate-day dosing of caplacizumab for immune-mediated thrombotic thrombocytopenic purpura. J Thromb Haemost 2022; 20:951-960. [PMID: 35000278 DOI: 10.1111/jth.15637] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 12/23/2021] [Accepted: 01/04/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND The anti-von Willebrand factor (VWF) nanobody caplacizumab directly prevents the fatal microthrombi formation in immune-mediated thrombotic thrombocytopenic purpura (iTTP), thereby adding a new therapeutic principle to the treatment of this disorder. However, real-world treatment modalities beyond clinical trials remain heterogeneous. METHODS Here, we describe the risks and benefits of an alternate-day dosing regimen for caplacizumab by thoroughly analyzing the timing and outcome of this approach in a retrospective cohort of 25 iTTP patients treated with caplacizumab at seven different medical centers in Austria and Germany between 2018 and 2021. RESULTS Alternate-day dosing of caplacizumab appeared feasible and led to persisting normal platelet counts in most patients. Five patients experienced iTTP exacerbations or relapses that led to the resumption of daily caplacizumab application. VWF activity was repeatedly measured in 16 of 25 patients and documented sufficient suppression by caplacizumab after 24 and 48 h in line with published pharmacodynamics. CONCLUSION Extension of caplacizumab application intervals from daily to alternate-day dosing may be safely considered in selected patients after 3 to 4 weeks of daily treatment. Earlier modifications may be discussed in low-risk patients but require close monitoring for clinical and laboratory features of thrombotic microangiopathy.
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Affiliation(s)
- Lucas Kühne
- Department II of Internal Medicine and Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- Cologne Cluster of Excellence on Cellular Stress Responses in Ageing-Associated Diseases (CECAD), Cologne, Germany
| | - Jessica Kaufeld
- Department of Nephrology and Hypertension, Medical School Hannover, Hannover, Germany
| | - Linus A Völker
- Department II of Internal Medicine and Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- Cologne Cluster of Excellence on Cellular Stress Responses in Ageing-Associated Diseases (CECAD), Cologne, Germany
| | - Ralph Wendt
- Department of Nephrology and Kuratorium for Dialysis and Transplantation Renal Unit, Hospital St. Georg, Leipzig, Germany
| | - Ulf Schönermarck
- Klinikum der Universität München - Medizinische Klinik und Poliklinik IV, Nephrologisches Zentrum, Munich, Germany
| | - Holger Hägele
- Department II of Internal Medicine and Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- Cologne Cluster of Excellence on Cellular Stress Responses in Ageing-Associated Diseases (CECAD), Cologne, Germany
| | - Thomas Osterholt
- Department II of Internal Medicine and Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- Cologne Cluster of Excellence on Cellular Stress Responses in Ageing-Associated Diseases (CECAD), Cologne, Germany
| | - Dennis A Eichenauer
- Department I of Internal Medicine, Center for Integrated Oncology, Aachen Bonn Cologne Dusseldorf, University of Cologne, Cologne, Germany
| | - Markus Bieringer
- Department of Cardiology and Nephrology, Helios Klinik Berlin-Buch, Berlin, Germany
| | - Anke von Bergwelt-Baildon
- Klinikum der Universität München - Medizinische Klinik und Poliklinik IV, Nephrologisches Zentrum, Munich, Germany
| | - Michael Fischereder
- Klinikum der Universität München - Medizinische Klinik und Poliklinik IV, Nephrologisches Zentrum, Munich, Germany
| | - Veronika Buxhofer-Ausch
- Department of Internal Medicine I with Hematology, Stem Cell Transplantation, Hemostaseology and Medical Oncology, Ordensklinikum Linz Elisabethinnen, Linz, Austria
- Medical Faculty, Johannes Kepler University Linz, Linz, Austria
| | - Jan Menne
- Department of Nephrology and Hypertension, Medical School Hannover, Hannover, Germany
| | - Paul T Brinkkoetter
- Department II of Internal Medicine and Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- Cologne Cluster of Excellence on Cellular Stress Responses in Ageing-Associated Diseases (CECAD), Cologne, Germany
| | - Paul Knöbl
- Division of Hematology and Department of Medicine 1, Medical University of Vienna, Vienna, Austria
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8
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Berger D, Bauer K, Kornauth C, Gamperl S, Stefanzl G, Smiljkovic D, Sillaber C, Bettelheim P, Knöbl P, Schiefer AI, Greiner G, Thalhammer R, Hoermann G, Schwarzinger I, Staber PB, Sperr WR, Valent P. Secondary basophilic leukemia in Ph-negative myeloid neoplasms: A distinct subset with poor prognosis. Neoplasia 2021; 23:1183-1191. [PMID: 34731787 PMCID: PMC8572856 DOI: 10.1016/j.neo.2021.09.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 09/28/2021] [Accepted: 09/29/2021] [Indexed: 11/09/2022] Open
Abstract
During progression of myeloid neoplasms, the basophil compartment may expand substantially and in some of these patients, a basophilic leukemia is diagnosed. In patients with Ph-chromosome+ chronic myeloid leukemia, acceleration of disease is typically accompanied by marked basophilia. In other myeloid neoplasms, secondary leukemic expansion of basophils is rarely seen. We report on 5 patients who suffered from a myelodysplastic syndrome, myeloproliferative neoplasm, or acute leukemia and developed a massive expansion of basophils during disease progression. In 4 of 5 patients, peripheral blood basophil counts reached 40%, and the diagnosis “secondary basophilic leukemia” was established. As assessed by flow cytometry, neoplastic basophils expressed CD9, CD18, CD25, CD33, CD63, PD-L1, CD123, and CLL-1. In addition, basophils were found to display BB1 (basogranulin), 2D7, tryptase and KIT. In 4 of 5 patients the disease progressed quickly and treatment with azacitidine was started. However, azacitidine did not induce major clinical responses, and all patients died from progressive disease within 3 Y. In in vitro experiments, the patients´ cells and the basophilic leukemia cell line KU812 showed variable responses to targeted drugs, including azacitidine, venetoclax, hydroxyurea, and cytarabine. A combination of venetoclax and azacitidine induced cooperative antineoplastic effects in these cells. Together, secondary basophilic leukemia has a poor prognosis and monotherapy with azacitidine is not sufficient to keep the disease under control for longer time-periods. Whether drug combination, such as venetoclax+azacitidine, can induce better outcomes in these patients remains to be determined in future clinical studies.
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Affiliation(s)
- Daniela Berger
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - Karin Bauer
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria; Ludwig Boltzmann Institute for Hematology and Oncology (LBI HO), Medical University of Vienna, Vienna, Austria
| | - Christoph Kornauth
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria; Ludwig Boltzmann Institute for Hematology and Oncology (LBI HO), Medical University of Vienna, Vienna, Austria; Department of Pathology, Medical University of Vienna, Vienna, Austria
| | - Susanne Gamperl
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - Gabriele Stefanzl
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - Dubravka Smiljkovic
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - Christian Sillaber
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - Peter Bettelheim
- Division of Hematology and Oncology, Elisabethinen Hospital Linz and Europa-Platz Labor Linz, Linz, Austria
| | - Paul Knöbl
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - Ana-Iris Schiefer
- Department of Pathology, Medical University of Vienna, Vienna, Austria
| | - Georg Greiner
- Ludwig Boltzmann Institute for Hematology and Oncology (LBI HO), Medical University of Vienna, Vienna, Austria; Ihr Labor, Medical Diagnostic Laboratories, Vienna, Austria; Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - Renate Thalhammer
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - Gregor Hoermann
- Ludwig Boltzmann Institute for Hematology and Oncology (LBI HO), Medical University of Vienna, Vienna, Austria; Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria; Munich Leukemia Laboratory (MLL), Munich, Germany
| | - Ilse Schwarzinger
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - Philipp B Staber
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - Wolfgang R Sperr
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - Peter Valent
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria.
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9
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Knöbl P, Scharf RE. Theme Issue: "Critical Management Decisions in Hemostasis and Thrombosis". Hamostaseologie 2021; 41:237-238. [PMID: 34388837 DOI: 10.1055/a-1370-0068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Affiliation(s)
- Paul Knöbl
- Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | - Rüdiger E Scharf
- Program in Cellular and Molecular Medicine, Boston Children's Hospital, Boston, MA, USA.,Department of Pediatrics, Harvard Medical School, Boston, MA, USA.,Division of Experimental and Clinical Hemostasis, Hemotherapy, and Transfusion Medicine, and Hemophilia Comprehensive Care Center, Institute of Transplantation Diagnostics and Cell Therapy, Heinrich Heine University Medical Center, Düsseldorf, Germany
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10
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Thaler J, Ay C, Gleixner KV, Hauswirth AW, Cacioppo F, Grafeneder J, Quehenberger P, Pabinger I, Knöbl P. Successful treatment of vaccine-induced prothrombotic immune thrombocytopenia (VIPIT). J Thromb Haemost 2021; 19:1819-1822. [PMID: 33877735 PMCID: PMC8362082 DOI: 10.1111/jth.15346] [Citation(s) in RCA: 80] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 04/18/2021] [Indexed: 01/10/2023]
Abstract
Cases of unusual thrombosis and thrombocytopenia after administration of the ChAdOx1 nCoV-19 vaccine (AstraZeneca) have been reported. The term vaccine-induced prothrombotic immune thrombocytopenia (VIPIT) was coined to reflect this new phenomenon. In vitro experiments with VIPIT patient sera indicated that high-dose intravenous immunoglobulins (IVIG) competitively inhibit the platelet-activating properties of ChAdOx1 nCoV-19 vaccine induced antibodies. Here, we report a case of a 62-year-old woman who had received this vaccine and developed VIPIT. She visited the emergency ward because of petechiae and hematomas. In the laboratory work-up, thrombocytopenia, low fibrinogen, elevated D-dimer, and positivity in the platelet factor 4/heparin-enzyme-immunoassay were present. Signs and symptoms of thrombosis were absent. Upon immediate therapy with non-heparin anticoagulation, high-dose IVIG, and prednisolone, laboratory parameters steadily improved and the patient was discharged from hospital without thrombotic complications. We conclude that early initiation of VIPIT treatment results in a swift response without thrombotic complications.
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Affiliation(s)
- Johannes Thaler
- Department of Medicine I, Division of Hematology and HemostaseologyMedical University of ViennaViennaAustria
| | - Cihan Ay
- Department of Medicine I, Division of Hematology and HemostaseologyMedical University of ViennaViennaAustria
| | - Karoline V. Gleixner
- Department of Medicine I, Division of Hematology and HemostaseologyMedical University of ViennaViennaAustria
| | - Alexander W. Hauswirth
- Department of Medicine I, Division of Hematology and HemostaseologyMedical University of ViennaViennaAustria
| | - Filippo Cacioppo
- Department of Emergency MedicineMedical University of ViennaViennaAustria
| | - Jürgen Grafeneder
- Department of Emergency MedicineMedical University of ViennaViennaAustria
| | - Peter Quehenberger
- Department of Laboratory MedicineMedical University of ViennaViennaAustria
| | - Ingrid Pabinger
- Department of Medicine I, Division of Hematology and HemostaseologyMedical University of ViennaViennaAustria
| | - Paul Knöbl
- Department of Medicine I, Division of Hematology and HemostaseologyMedical University of ViennaViennaAustria
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11
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Gratz J, Wiegele M, Maleczek M, Herkner H, Schöchl H, Chwala E, Knöbl P, Schaden E. Risk of Clinically Relevant Venous Thromboembolism in Critically Ill Patients With COVID-19: A Systematic Review and Meta-Analysis. Front Med (Lausanne) 2021; 8:647917. [PMID: 33768106 PMCID: PMC7985162 DOI: 10.3389/fmed.2021.647917] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 02/01/2021] [Indexed: 12/16/2022] Open
Abstract
Background: Early during the course of the ongoing COVID-19 pandemic, reports suggested alarmingly high incidences for thromboembolic events in critically ill patients with COVID-19. However, the clinical relevance of these events was not reported in several studies. Additionally, more recent research showed contradictory results and suggested substantially lower rates of venous thromboembolism. Thus, the aim of the present study was to summarize evidence on the incidence of clinically relevant venous thromboembolism (VTE)—defined as VTE excluding isolated subsegmental pulmonary embolism (PE) and distal deep vein thrombosis (DVT)—in adult critically ill patients with COVID-19. Methods: We performed a systematic review of studies reporting the incidence of clinically relevant PE and/or DVT in critically ill patients with COVID-19. Scientific reports published in the English language between January and October 2020 were included. We conducted a random-effects model meta-analysis to calculate incidence estimates of clinically relevant VTE and bleeding events. We also performed exploratory meta-regression and subgroup analyses of different diagnostic approaches and additional factors that possibly influenced the incidence of these outcomes. Results: Fifty-four articles (5,400 patients) fulfilled the predefined inclusion criteria, of which 41 had a high risk of bias. The majority of included patients were male, > 60 years, and overweight. Twenty-one studies reported the use of prophylactic doses of heparin. Pooled incidences for clinically relevant PE were estimated at 8% (95% CI, 4–11%), for proximal DVT at 14% (95% CI, 9–20%), and—after exclusion of studies with a high risk of bias—for the composite outcome of VTE at 18% (95% CI, 13–24%). Clinically relevant bleeding occurred at a rate of 6% (95% CI, 2–9%). Conclusions: We summarized currently available data on the rate of clinically relevant VTE in critically ill patients with COVID-19. Pooled incidence estimates were lower than those reported by previous review articles. In the absence of evidence-based anticoagulation guidelines for critically ill patients with COVID-19, the results of our study provide clinically important information for an individual risk-benefit assessment in this context. Registration: The study protocol was prospectively registered in PROSPERO on June 22, 2020 (CRD42020193353; https://www.crd.york.ac.uk/prospero).
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Affiliation(s)
- Johannes Gratz
- Department of Anesthesiology, Intensive Care Medicine and Pain Medicine, Medical University of Vienna, Vienna, Austria
| | - Marion Wiegele
- Department of Anesthesiology, Intensive Care Medicine and Pain Medicine, Medical University of Vienna, Vienna, Austria
| | - Mathias Maleczek
- Department of Anesthesiology, Intensive Care Medicine and Pain Medicine, Medical University of Vienna, Vienna, Austria
| | - Harald Herkner
- Department of Emergency Medicine, Medical University of Vienna, Vienna, Austria
| | - Herbert Schöchl
- Department of Anaesthesiology and Intensive Care Medicine, AUVA Trauma Centre Salzburg, Academic Teaching Hospital of the Paracelsus Medical University, Salzburg, Austria.,Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, AUVA Trauma Research Centre, Vienna, Austria
| | - Eva Chwala
- University Library, Medical University of Vienna, Vienna, Austria
| | - Paul Knöbl
- Division of Hematology and Hemostasis, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | - Eva Schaden
- Department of Anesthesiology, Intensive Care Medicine and Pain Medicine, Medical University of Vienna, Vienna, Austria
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12
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Tiede A, Kemkes-Matthes B, Knöbl P. Should emicizumab be used in patients with acquired hemophilia A? J Thromb Haemost 2021; 19:637-644. [PMID: 33306259 DOI: 10.1111/jth.15208] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 11/05/2020] [Accepted: 12/01/2020] [Indexed: 12/18/2022]
Abstract
Emicizumab is currently approved to prevent bleeding in patients with congenital hemophilia A with or without neutralizing antibodies (inhibitors) against factor VIII (FVIII). Here, we present a case-based discussion of its potential use in acquired hemophilia A (AHA), a severe bleeding disorder caused by autoantibodies against FVIII. State-of-the-art management is based on bypassing agents (recombinant factor VIIa, activated prothrombin complex concentrate) and recombinant porcine FVIII; immunosuppressive therapy (corticosteroids, rituximab, cyclophosphamide) is used to suppress autoantibody formation. Case reports and one series suggest that emicizumab can reduce the risk of bleeding and the requirement for hemostatic therapy until remission of AHA is achieved. Further, it may allow to postpone the start of immunosuppressive therapy or to use less intense regimens. However, the risk-benefit assessment of emicizumab in AHA is difficult because demographic and clinical characteristics are different compared with congenital hemophilia. Prospective clinical trials are needed before the use of emicizumab can be recommended in AHA.
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Affiliation(s)
- Andreas Tiede
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | | | - Paul Knöbl
- Department of Medicine 1, Division for Hematology and Hemostasis, Medical University of Vienna, Vienna, Austria
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13
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Geissler K, Jäger E, Barna A, Gurbisz M, Graf T, Graf E, Nösslinger T, Pfeilstöcker M, Tüchler H, Sliwa T, Keil F, Geissler C, Heibl S, Thaler J, Machherndl-Spandl S, Zach O, Weltermann A, Bettelheim P, Stauder R, Zebisch A, Sill H, Schwarzinger I, Schneeweiss B, Öhler L, Ulsperger E, Kusec R, Germing U, Sperr WR, Knöbl P, Jäger U, Hörmann G, Valent P. Correlation of RAS-Pathway Mutations and Spontaneous Myeloid Colony Growth with Progression and Transformation in Chronic Myelomonocytic Leukemia-A Retrospective Analysis in 337 Patients. Int J Mol Sci 2020; 21:ijms21083025. [PMID: 32344757 PMCID: PMC7215883 DOI: 10.3390/ijms21083025] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Revised: 04/19/2020] [Accepted: 04/22/2020] [Indexed: 01/07/2023] Open
Abstract
Although the RAS-pathway has been implicated as an important driver in the pathogenesis of chronic myelomonocytic leukemia (CMML) a comprehensive study including molecular and functional analyses in patients with progression and transformation has not been performed. A close correlation between RASopathy gene mutations and spontaneous in vitro myeloid colony (CFU-GM) growth in CMML has been described. Molecular and/or functional analyses were performed in three cohorts of 337 CMML patients: in patients without (A, n = 236) and with (B, n = 61) progression/transformation during follow-up, and in patients already transformed at the time of sampling (C, n = 40 + 26 who were before in B). The frequencies of RAS-pathway mutations (variant allele frequency ≥ 20%) in cohorts A, B, and C were 30%, 47%, and 71% (p < 0.0001), and of high colony growth (≥20/105 peripheral blood mononuclear cells) 31%, 44%, and 80% (p < 0.0001), respectively. Increases in allele burden of RAS-pathway mutations and in numbers of spontaneously formed CFU-GM before and after transformation could be shown in individual patients. Finally, the presence of mutations in RASopathy genes as well as the presence of high colony growth prior to transformation was significantly associated with an increased risk of acute myeloid leukemia (AML) development. Together, RAS-pathway mutations in CMML correlate with an augmented autonomous expansion of neoplastic precursor cells and indicate an increased risk of AML development which may be relevant for targeted treatment strategies.
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MESH Headings
- Cell Transformation, Neoplastic/genetics
- Cell Transformation, Neoplastic/metabolism
- Cytogenetic Analysis
- Disease Progression
- Gene Expression Regulation, Leukemic
- Humans
- Leukemia, Myelomonocytic, Chronic/genetics
- Leukemia, Myelomonocytic, Chronic/metabolism
- Leukemia, Myelomonocytic, Chronic/mortality
- Leukemia, Myelomonocytic, Chronic/pathology
- Mutation
- Neoplasm Staging
- Neoplastic Stem Cells/metabolism
- Prognosis
- Retrospective Studies
- Signal Transduction
- ras Proteins/genetics
- ras Proteins/metabolism
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Affiliation(s)
- Klaus Geissler
- Medical School, Sigmund Freud University, 1020 Vienna, Austria
- Department of Internal Medicine V with Hematology, Oncology and Palliative Medicine, Hospital Hietzing, 1130 Vienna, Austria; (T.G.); (E.G.)
- Correspondence: ; Tel.: +43-01-80110-3122; Fax: +43-01-80110-2671
| | - Eva Jäger
- Department of Laboratory Medicine, Medical University of Vienna, 1090 Vienna, Austria; (E.J.); (M.G.); (I.S.)
| | - Agnes Barna
- Blood Transfusion Service, Blood Transfusion Service for Upper Austria, Austrian Red Cross, 4020 Linz, Austria;
| | - Michael Gurbisz
- Department of Laboratory Medicine, Medical University of Vienna, 1090 Vienna, Austria; (E.J.); (M.G.); (I.S.)
| | - Temeida Graf
- Department of Internal Medicine V with Hematology, Oncology and Palliative Medicine, Hospital Hietzing, 1130 Vienna, Austria; (T.G.); (E.G.)
| | - Elmir Graf
- Department of Internal Medicine V with Hematology, Oncology and Palliative Medicine, Hospital Hietzing, 1130 Vienna, Austria; (T.G.); (E.G.)
| | - Thomas Nösslinger
- Department of Internal Medicine III, Hanusch Hospital, 1140 Vienna, Austria; (T.N.); (M.P.); (H.T.); (T.S.); (F.K.)
| | - Michael Pfeilstöcker
- Department of Internal Medicine III, Hanusch Hospital, 1140 Vienna, Austria; (T.N.); (M.P.); (H.T.); (T.S.); (F.K.)
| | - Heinz Tüchler
- Department of Internal Medicine III, Hanusch Hospital, 1140 Vienna, Austria; (T.N.); (M.P.); (H.T.); (T.S.); (F.K.)
| | - Thamer Sliwa
- Department of Internal Medicine III, Hanusch Hospital, 1140 Vienna, Austria; (T.N.); (M.P.); (H.T.); (T.S.); (F.K.)
| | - Felix Keil
- Department of Internal Medicine III, Hanusch Hospital, 1140 Vienna, Austria; (T.N.); (M.P.); (H.T.); (T.S.); (F.K.)
| | - Christoph Geissler
- Department of Laboratory Medicine, Hospital Hietzing, 1130 Vienna, Austria;
| | - Sonja Heibl
- Department of Internal Medicine IV, Hospital Wels-Grieskirchen, 4600 Wels, Austria; (S.H.); (J.T.)
| | - Josef Thaler
- Department of Internal Medicine IV, Hospital Wels-Grieskirchen, 4600 Wels, Austria; (S.H.); (J.T.)
| | - Sigrid Machherndl-Spandl
- Department of Internal Medicine I with Hematology with Stem Cell Transplantation, Hemostaseology and Medical Oncology, Ordensklinikum Linz Barmherzige Schwestern - Elisabethinen, 4020 Linz, Austria; (S.M.-S.); (O.Z.); (A.W.); (P.B.)
| | - Otto Zach
- Department of Internal Medicine I with Hematology with Stem Cell Transplantation, Hemostaseology and Medical Oncology, Ordensklinikum Linz Barmherzige Schwestern - Elisabethinen, 4020 Linz, Austria; (S.M.-S.); (O.Z.); (A.W.); (P.B.)
| | - Ansgar Weltermann
- Department of Internal Medicine I with Hematology with Stem Cell Transplantation, Hemostaseology and Medical Oncology, Ordensklinikum Linz Barmherzige Schwestern - Elisabethinen, 4020 Linz, Austria; (S.M.-S.); (O.Z.); (A.W.); (P.B.)
| | - Peter Bettelheim
- Department of Internal Medicine I with Hematology with Stem Cell Transplantation, Hemostaseology and Medical Oncology, Ordensklinikum Linz Barmherzige Schwestern - Elisabethinen, 4020 Linz, Austria; (S.M.-S.); (O.Z.); (A.W.); (P.B.)
| | - Reinhard Stauder
- Internal Medicine V with Hematology and Oncology, Medical University of Innsbruck, 6020 Innsbruck, Austria;
| | - Armin Zebisch
- Department of Internal Medicine, Division of Hematology, Medical University of Graz, 8036 Graz, Austria; (A.Z.); (H.S.)
- Otto-Loewi-Research Center for Vascular Biology, Immunology and Inflammation, Division of Pharmacology, Medical University of Graz, 8036 Graz, Austria
| | - Heinz Sill
- Department of Internal Medicine, Division of Hematology, Medical University of Graz, 8036 Graz, Austria; (A.Z.); (H.S.)
| | - Ilse Schwarzinger
- Department of Laboratory Medicine, Medical University of Vienna, 1090 Vienna, Austria; (E.J.); (M.G.); (I.S.)
| | - Bruno Schneeweiss
- Department of Internal Medicine, Hospital Kirchdorf, 4560 Kirchdorf, Austria;
| | - Leopold Öhler
- Department of Internal Medicine/Oncology, St. Josef Hospital, 1130 Vienna, Austria;
| | - Ernst Ulsperger
- Department of Internal Medicine, Hospital Horn, 3580 Horn, Austria;
| | - Rajko Kusec
- School of Medicine, University of Zagreb, University Hospital Dubrava, 10000 Zagreb, Croatia;
| | - Ulrich Germing
- Department of Hematology, Oncology, and Clinical Immunology, Heinrich-Heine-University, 40225 Düsseldorf, Germany;
| | - Wolfgang R. Sperr
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, 1090 Vienna, Austria; (W.R.S.); (P.K.); (U.J.); (P.V.)
| | - Paul Knöbl
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, 1090 Vienna, Austria; (W.R.S.); (P.K.); (U.J.); (P.V.)
| | - Ulrich Jäger
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, 1090 Vienna, Austria; (W.R.S.); (P.K.); (U.J.); (P.V.)
| | - Gregor Hörmann
- Central Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Innsbruck, 6020 Innsbruck, Austria;
| | - Peter Valent
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, 1090 Vienna, Austria; (W.R.S.); (P.K.); (U.J.); (P.V.)
- Ludwig Boltzmann Institute for Hematology and Oncology (LBI HO), Medical University of Vienna, 1090 Vienna, Austria
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14
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Türkantoz H, Königs C, Knöbl P, Klamroth R, Holstein K, Huth-Kühne A, Heinz J, Eichler H, Tiede A. Cross-reacting inhibitors against recombinant porcine factor VIII in acquired hemophilia A: Data from the GTH-AH 01/2010 Study. J Thromb Haemost 2020; 18:36-43. [PMID: 31448877 DOI: 10.1111/jth.14618] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 08/22/2019] [Indexed: 02/05/2023]
Abstract
BACKGROUND Recombinant porcine factor VIII (rpFVIII, OBI-1, susoctocog alfa) is used for the treatment of acute bleeds in patients with acquired hemophilia A (AHA). Inhibitors in AHA can sometimes cross-react with rpFVIII. OBJECTIVES To assess the frequency, strength, and determinants of cross-reactivity. PATIENTS/METHODS Baseline samples from 70 patients of the prospective, observational cohort study GTH-AH 01/2010 were assessed for anti-human FVIII and anti-rpFVIII inhibitors using modified Nijmegen-Bethesda assays, as well as anti-human FVIII domain reactivity using enzyme-linked immunoassay (ELISA). RESULTS Anti-human FVIII inhibitors were present in all samples ranging between 0.7 and 3891 Bethesda Units (BU)/mL. Inhibitors from 31 of 70 patients (44%) partially inhibited rpFVIII with anti-rpFVIII titers ranging between 0.5 and 471 BU/mL. Anti-rpFVIII titers were ≤5 BU in most patients. Patients with cross-reacting inhibitors, as compared to patients without, had significantly higher anti-human FVIII titers (27.8 versus 5.4 BU/mL) and lower baseline FVIII activity (<1 versus 2.6 IU/dL). The ratio between anti-rpFVIII to anti-human titers was highest for inhibitors involving the C1 domain. Cross-reactivity was very rare, if inhibitors reacted only with the C2 domain of FVIII (6%). An anti-human FVIII titer of >100 BU/mL predicted cross-reactivity with 97% likelihood, whereas an anti-human FVIII titer of <3.8 BU/mL predicted absent cross-reactivity with 90% likelihood. CONCLUSION Cross-reacting inhibitors should be considered when choosing a treatment for bleeding patients with AHA. Cross-reactivity is frequent in patients with anti-human FVIII titers of >100 BU/mL.
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Affiliation(s)
- Halet Türkantoz
- Hematology, Hemostasis, Oncology, and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Christoph Königs
- Department of Pediatrics, Clinical and Molecular Hemostasis, University Hospital, Goethe University, Frankfurt am Main, Germany
| | - Paul Knöbl
- Hematology and Hemostasis, Vienna Medical University, Vienna, Austria
| | - Robert Klamroth
- Internal Medicine, Vivantes Clinic Friedrichshain, Berlin, Germany
| | - Katharina Holstein
- Hematology and Clinical Oncology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Angela Huth-Kühne
- Hemophilia Care Center, SRH Kurpfalzkrankenhaus Heidelberg, Heidelberg, Germany
| | - Jürgen Heinz
- Hematology and Oncology, Freiburg University Hospital, Freiburg, Germany
| | - Hermann Eichler
- Institute of Clinical Hemostaseology and Transfusion Medicine, Saarland University and Saarland University Hospital, Homburg/Saar, Germany
| | - Andreas Tiede
- Hematology, Hemostasis, Oncology, and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
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15
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Geissler K, Jäger E, Barna A, Gurbisz M, Marschon R, Graf T, Graf E, Borjan B, Jilch R, Geissler C, Hoermann G, Esterbauer H, Schwarzinger I, Nösslinger T, Pfeilstöcker M, Tüchler H, Reisner R, Sliwa T, Keil F, Bettelheim P, Machherndl-Spandl S, Doleschal B, Zach O, Weltermann A, Heibl S, Thaler J, Zebisch A, Sill H, Stauder R, Webersinke G, Petzer A, Kusec R, Ulsperger E, Schneeweiss B, Berger J, Öhler L, Germing U, Sperr WR, Knöbl P, Jäger U, Valent P. The Austrian biodatabase for chronic myelomonocytic leukemia (ABCMML) : A representative and useful real-life data source for further biomedical research. Wien Klin Wochenschr 2019; 131:410-418. [PMID: 31321531 PMCID: PMC6748886 DOI: 10.1007/s00508-019-1526-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 06/11/2019] [Accepted: 06/18/2019] [Indexed: 12/22/2022]
Abstract
In the Austrian biodatabase for chronic myelomonocytic leukemia (ABCMML) clinicolaboratory real-life data have been captured from 606 CMML patients from 14 different hospitals over the last 30 years. It is the only large biodatabase worldwide in which functional methods such as semisolid in vitro cultures complement modern molecular methods such as next generation sequencing. This provides the possibility to comprehensively study the biology of CMML. The aim of this study was to compare patient characteristics with published CMML cohorts and to validate established prognostic parameters in order to examine if this real-life database can serve as a representative and useful data source for further research. After exclusion of patients in transformation characteristics of 531 patients were compared with published CMML cohorts. Median values for age, leukocytes, hemoglobin, platelets, lactate dehydrogenase (LDH) and circulating blasts were within the ranges of reported CMML series. Established prognostic parameters including leukocytes, hemoglobin, blasts and adverse cytogenetics were able to discriminate patients with different outcome. Myeloproliferative (MP) as compared to myelodysplastic (MD)-CMML patients had higher values for circulating blasts, LDH, RAS-pathway mutations and for spontaneous myelomonocytic colony growth in vitro as well as more often splenomegaly. This study demonstrates that the patient cohort of the ABCMML shares clinicolaboratory characteristics with reported CMML cohorts from other countries and confirms phenotypic and genotypic differences between MP-CMML and MD-CMML. Therefore, results obtained from molecular and biological analyses using material from the national cohort will also be applicable to other CMML series and thus may have a more general significance.
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Affiliation(s)
- Klaus Geissler
- Sigmund Freud University, Vienna, Austria. .,Department of Internal Medicine V with Hematology, Oncology and Palliative Medicine, Hospital Hietzing, Wolkersbergenstraße 1, 1130, Vienna, Austria.
| | - Eva Jäger
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - Agnes Barna
- Blood Transfusion Service, Blood Transfusion Service for Upper Austria, Austrian Red Cross, Linz, Austria
| | - Michael Gurbisz
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - Renate Marschon
- Department of Internal Medicine I with Hematology with Stem Cell Transplantation, Hemostaseology and Medical Oncology, Ordensklinikum Linz Barmherzige Schwestern - Elisabethinen, Linz, Austria
| | - Temeida Graf
- Department of Internal Medicine V with Hematology, Oncology and Palliative Medicine, Hospital Hietzing, Wolkersbergenstraße 1, 1130, Vienna, Austria
| | - Elmir Graf
- Department of Internal Medicine V with Hematology, Oncology and Palliative Medicine, Hospital Hietzing, Wolkersbergenstraße 1, 1130, Vienna, Austria
| | - Bojana Borjan
- Internal Medicine V with Hematology and Oncology, Medical University of Innsbruck, Innsbruck, Austria
| | - Ruth Jilch
- Department of Laboratory Medicine, Hospital Hietzing, Vienna, Austria
| | | | - Gregor Hoermann
- Central Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Innsbruck, Innsbruck, Austria
| | - Harald Esterbauer
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - Ilse Schwarzinger
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - Thomas Nösslinger
- Department of Internal Medicine III, Hanusch Hospital, Vienna, Austria
| | | | - Heinz Tüchler
- Department of Internal Medicine III, Hanusch Hospital, Vienna, Austria
| | - Regina Reisner
- Department of Internal Medicine III, Hanusch Hospital, Vienna, Austria
| | - Thamer Sliwa
- Department of Internal Medicine III, Hanusch Hospital, Vienna, Austria
| | - Felix Keil
- Department of Internal Medicine III, Hanusch Hospital, Vienna, Austria
| | - Peter Bettelheim
- Department of Internal Medicine I with Hematology with Stem Cell Transplantation, Hemostaseology and Medical Oncology, Ordensklinikum Linz Barmherzige Schwestern - Elisabethinen, Linz, Austria
| | - Sigrid Machherndl-Spandl
- Department of Internal Medicine I with Hematology with Stem Cell Transplantation, Hemostaseology and Medical Oncology, Ordensklinikum Linz Barmherzige Schwestern - Elisabethinen, Linz, Austria
| | - Bernhard Doleschal
- Department of Internal Medicine I with Hematology with Stem Cell Transplantation, Hemostaseology and Medical Oncology, Ordensklinikum Linz Barmherzige Schwestern - Elisabethinen, Linz, Austria
| | - Otto Zach
- Department of Internal Medicine I with Hematology with Stem Cell Transplantation, Hemostaseology and Medical Oncology, Ordensklinikum Linz Barmherzige Schwestern - Elisabethinen, Linz, Austria
| | - Ansgar Weltermann
- Department of Internal Medicine I with Hematology with Stem Cell Transplantation, Hemostaseology and Medical Oncology, Ordensklinikum Linz Barmherzige Schwestern - Elisabethinen, Linz, Austria
| | - Sonja Heibl
- Department of Internal Medicine IV, Hospital Wels-Grieskirchen, Wels, Austria
| | - Josef Thaler
- Department of Internal Medicine IV, Hospital Wels-Grieskirchen, Wels, Austria
| | - Armin Zebisch
- Department of Internal Medicine, Division of Hematology, Medical University of Graz, Graz, Austria
| | - Heinz Sill
- Department of Internal Medicine, Division of Hematology, Medical University of Graz, Graz, Austria
| | - Reinhard Stauder
- Internal Medicine V with Hematology and Oncology, Medical University of Innsbruck, Innsbruck, Austria
| | - Gerald Webersinke
- Department of Internal Medicine I with Hematology with Stem Cell Transplantation, Hemostaseology and Medical Oncology, Ordensklinikum Linz Barmherzige Schwestern - Elisabethinen, Linz, Austria
| | - Andreas Petzer
- Department of Internal Medicine I with Hematology with Stem Cell Transplantation, Hemostaseology and Medical Oncology, Ordensklinikum Linz Barmherzige Schwestern - Elisabethinen, Linz, Austria
| | - Rajko Kusec
- School of Medicine, University of Zagreb, University Hospital Dubrava, Zagreb, Croatia
| | - Ernst Ulsperger
- Department of Internal Medicine, Hospital Horn, Horn, Austria
| | - Bruno Schneeweiss
- Department of Internal Medicine, Hospital Kirchdorf, Kirchdorf, Austria
| | - Jörg Berger
- Department of Internal Medicine, Hospital Schwarzach, Schwarzach, Austria
| | - Leopold Öhler
- Department of Internal Medicine/Oncology, St. Josef Hospital, Vienna, Austria
| | - Ulrich Germing
- Department of Hematology, Oncology, and Clinical Immunology, Heinrich-Heine-University, Düsseldorf, Germany
| | - Wolfgang R Sperr
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria.,Ludwig Boltzmann Institute for Hematology and Oncology (LBI HO), Medical University of Vienna, Vienna, Austria
| | - Paul Knöbl
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - Ulrich Jäger
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria.,Ludwig Boltzmann Institute for Hematology and Oncology (LBI HO), Medical University of Vienna, Vienna, Austria
| | - Peter Valent
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria.,Ludwig Boltzmann Institute for Hematology and Oncology (LBI HO), Medical University of Vienna, Vienna, Austria
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16
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Geissler K, Jäger E, Barna A, Sliwa T, Knöbl P, Schwarzinger I, Gisslinger H, Valent P. Is ruxolitinib a potentially useful drug in hematological malignancies with RAS pathway hyperactivation? Haematologica 2019; 101:e492. [PMID: 27903714 DOI: 10.3324/haematol.2016.156448] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Klaus Geissler
- 5 Medical Department with Hematology, Oncology and Palliative Medicine, Hospital Hietzing, Vienna, Austria
| | - Eva Jäger
- Department of Laboratory Medicine, Medical University of Vienna, Austria
| | - Agnes Barna
- Blood Transfusion Service for Upper Austria, Austrian Red Cross, Linz, Austria
| | - Thamer Sliwa
- 3 Medical Department, Hanusch Hospital, Vienna, Austria
| | - Paul Knöbl
- Division of Hematology and Hemostaseology, Department of Internal Medicine I, Medical University of Vienna, Austria
| | - Ilse Schwarzinger
- Department of Laboratory Medicine, Medical University of Vienna, Austria
| | - Heinz Gisslinger
- Division of Hematology and Hemostaseology, Department of Internal Medicine I, Medical University of Vienna, Austria
| | - Peter Valent
- Division of Hematology and Hemostaseology, Department of Internal Medicine I, Medical University of Vienna, Austria
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17
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Scully M, Cataland SR, Peyvandi F, Coppo P, Knöbl P, Kremer Hovinga JA, Metjian A, de la Rubia J, Pavenski K, Callewaert F, Biswas D, De Winter H, Zeldin RK. Caplacizumab Treatment for Acquired Thrombotic Thrombocytopenic Purpura. N Engl J Med 2019; 380:335-346. [PMID: 30625070 DOI: 10.1056/nejmoa1806311] [Citation(s) in RCA: 530] [Impact Index Per Article: 106.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND In acquired thrombotic thrombocytopenic purpura (TTP), an immune-mediated deficiency of the von Willebrand factor-cleaving protease ADAMTS13 allows unrestrained adhesion of von Willebrand factor multimers to platelets and microthrombosis, which result in thrombocytopenia, hemolytic anemia, and tissue ischemia. Caplacizumab, an anti-von Willebrand factor humanized, bivalent variable-domain-only immunoglobulin fragment, inhibits interaction between von Willebrand factor multimers and platelets. METHODS In this double-blind, controlled trial, we randomly assigned 145 patients with TTP to receive caplacizumab (10-mg intravenous loading bolus, followed by 10 mg daily subcutaneously) or placebo during plasma exchange and for 30 days thereafter. The primary outcome was the time to normalization of the platelet count, with discontinuation of daily plasma exchange within 5 days thereafter. Key secondary outcomes included a composite of TTP-related death, recurrence of TTP, or a thromboembolic event during the trial treatment period; recurrence of TTP at any time during the trial; refractory TTP; and normalization of organ-damage markers. RESULTS The median time to normalization of the platelet count was shorter with caplacizumab than with placebo (2.69 days [95% confidence interval {CI}, 1.89 to 2.83] vs. 2.88 days [95% CI, 2.68 to 3.56], P=0.01), and patients who received caplacizumab were 1.55 times as likely to have a normalization of the platelet count as those who received placebo. The percentage of patients with a composite outcome event was 74% lower with caplacizumab than with placebo (12% vs. 49%, P<0.001). The percentage of patients who had a recurrence of TTP at any time during the trial was 67% lower with caplacizumab than with placebo (12% vs. 38%, P<0.001). Refractory disease developed in no patients in the caplacizumab group and in three patients in the placebo group. Patients who received caplacizumab needed less plasma exchange and had a shorter hospitalization than those who received placebo. The most common adverse event was mucocutaneous bleeding, which was reported in 65% of the patients in the caplacizumab group and in 48% in the placebo group. During the trial treatment period, three patients in the placebo group died. One patient in the caplacizumab group died from cerebral ischemia after the end of the treatment period. CONCLUSIONS Among patients with TTP, treatment with caplacizumab was associated with faster normalization of the platelet count; a lower incidence of a composite of TTP-related death, recurrence of TTP, or a thromboembolic event during the treatment period; and a lower rate of recurrence of TTP during the trial than placebo. (Funded by Ablynx; HERCULES ClinicalTrials.gov number, NCT02553317 .).
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Affiliation(s)
- Marie Scully
- From the Department of Haematology, University College London Hospitals, Cardiometabolic Program, National Institute for Health Research UCLH-UCL Biomedical Research Center, London (M.S.); the Division of Hematology, Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); Fondazione Istituti di Ricovero e Cura a Carattere Scientifico Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (F.P.); the Department of Hematology, Saint-Antoine University Hospital, Paris (P.C.); the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Division of Hematology, Duke University School of Medicine, Durham, NC (A.M.); the Hematology Department, Universidad Católica de Valencia Hospital Dr. Peset, Valencia, Spain (J.R.); the Departments of Medicine and Laboratory Medicine, St. Michael's Hospital and University of Toronto, Toronto (K.P.); and Clinical Development, Ablynx, Zwijnaarde, Belgium (F.C., D.B., H.D.W., R.K.Z.)
| | - Spero R Cataland
- From the Department of Haematology, University College London Hospitals, Cardiometabolic Program, National Institute for Health Research UCLH-UCL Biomedical Research Center, London (M.S.); the Division of Hematology, Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); Fondazione Istituti di Ricovero e Cura a Carattere Scientifico Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (F.P.); the Department of Hematology, Saint-Antoine University Hospital, Paris (P.C.); the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Division of Hematology, Duke University School of Medicine, Durham, NC (A.M.); the Hematology Department, Universidad Católica de Valencia Hospital Dr. Peset, Valencia, Spain (J.R.); the Departments of Medicine and Laboratory Medicine, St. Michael's Hospital and University of Toronto, Toronto (K.P.); and Clinical Development, Ablynx, Zwijnaarde, Belgium (F.C., D.B., H.D.W., R.K.Z.)
| | - Flora Peyvandi
- From the Department of Haematology, University College London Hospitals, Cardiometabolic Program, National Institute for Health Research UCLH-UCL Biomedical Research Center, London (M.S.); the Division of Hematology, Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); Fondazione Istituti di Ricovero e Cura a Carattere Scientifico Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (F.P.); the Department of Hematology, Saint-Antoine University Hospital, Paris (P.C.); the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Division of Hematology, Duke University School of Medicine, Durham, NC (A.M.); the Hematology Department, Universidad Católica de Valencia Hospital Dr. Peset, Valencia, Spain (J.R.); the Departments of Medicine and Laboratory Medicine, St. Michael's Hospital and University of Toronto, Toronto (K.P.); and Clinical Development, Ablynx, Zwijnaarde, Belgium (F.C., D.B., H.D.W., R.K.Z.)
| | - Paul Coppo
- From the Department of Haematology, University College London Hospitals, Cardiometabolic Program, National Institute for Health Research UCLH-UCL Biomedical Research Center, London (M.S.); the Division of Hematology, Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); Fondazione Istituti di Ricovero e Cura a Carattere Scientifico Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (F.P.); the Department of Hematology, Saint-Antoine University Hospital, Paris (P.C.); the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Division of Hematology, Duke University School of Medicine, Durham, NC (A.M.); the Hematology Department, Universidad Católica de Valencia Hospital Dr. Peset, Valencia, Spain (J.R.); the Departments of Medicine and Laboratory Medicine, St. Michael's Hospital and University of Toronto, Toronto (K.P.); and Clinical Development, Ablynx, Zwijnaarde, Belgium (F.C., D.B., H.D.W., R.K.Z.)
| | - Paul Knöbl
- From the Department of Haematology, University College London Hospitals, Cardiometabolic Program, National Institute for Health Research UCLH-UCL Biomedical Research Center, London (M.S.); the Division of Hematology, Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); Fondazione Istituti di Ricovero e Cura a Carattere Scientifico Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (F.P.); the Department of Hematology, Saint-Antoine University Hospital, Paris (P.C.); the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Division of Hematology, Duke University School of Medicine, Durham, NC (A.M.); the Hematology Department, Universidad Católica de Valencia Hospital Dr. Peset, Valencia, Spain (J.R.); the Departments of Medicine and Laboratory Medicine, St. Michael's Hospital and University of Toronto, Toronto (K.P.); and Clinical Development, Ablynx, Zwijnaarde, Belgium (F.C., D.B., H.D.W., R.K.Z.)
| | - Johanna A Kremer Hovinga
- From the Department of Haematology, University College London Hospitals, Cardiometabolic Program, National Institute for Health Research UCLH-UCL Biomedical Research Center, London (M.S.); the Division of Hematology, Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); Fondazione Istituti di Ricovero e Cura a Carattere Scientifico Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (F.P.); the Department of Hematology, Saint-Antoine University Hospital, Paris (P.C.); the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Division of Hematology, Duke University School of Medicine, Durham, NC (A.M.); the Hematology Department, Universidad Católica de Valencia Hospital Dr. Peset, Valencia, Spain (J.R.); the Departments of Medicine and Laboratory Medicine, St. Michael's Hospital and University of Toronto, Toronto (K.P.); and Clinical Development, Ablynx, Zwijnaarde, Belgium (F.C., D.B., H.D.W., R.K.Z.)
| | - Ara Metjian
- From the Department of Haematology, University College London Hospitals, Cardiometabolic Program, National Institute for Health Research UCLH-UCL Biomedical Research Center, London (M.S.); the Division of Hematology, Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); Fondazione Istituti di Ricovero e Cura a Carattere Scientifico Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (F.P.); the Department of Hematology, Saint-Antoine University Hospital, Paris (P.C.); the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Division of Hematology, Duke University School of Medicine, Durham, NC (A.M.); the Hematology Department, Universidad Católica de Valencia Hospital Dr. Peset, Valencia, Spain (J.R.); the Departments of Medicine and Laboratory Medicine, St. Michael's Hospital and University of Toronto, Toronto (K.P.); and Clinical Development, Ablynx, Zwijnaarde, Belgium (F.C., D.B., H.D.W., R.K.Z.)
| | - Javier de la Rubia
- From the Department of Haematology, University College London Hospitals, Cardiometabolic Program, National Institute for Health Research UCLH-UCL Biomedical Research Center, London (M.S.); the Division of Hematology, Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); Fondazione Istituti di Ricovero e Cura a Carattere Scientifico Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (F.P.); the Department of Hematology, Saint-Antoine University Hospital, Paris (P.C.); the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Division of Hematology, Duke University School of Medicine, Durham, NC (A.M.); the Hematology Department, Universidad Católica de Valencia Hospital Dr. Peset, Valencia, Spain (J.R.); the Departments of Medicine and Laboratory Medicine, St. Michael's Hospital and University of Toronto, Toronto (K.P.); and Clinical Development, Ablynx, Zwijnaarde, Belgium (F.C., D.B., H.D.W., R.K.Z.)
| | - Katerina Pavenski
- From the Department of Haematology, University College London Hospitals, Cardiometabolic Program, National Institute for Health Research UCLH-UCL Biomedical Research Center, London (M.S.); the Division of Hematology, Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); Fondazione Istituti di Ricovero e Cura a Carattere Scientifico Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (F.P.); the Department of Hematology, Saint-Antoine University Hospital, Paris (P.C.); the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Division of Hematology, Duke University School of Medicine, Durham, NC (A.M.); the Hematology Department, Universidad Católica de Valencia Hospital Dr. Peset, Valencia, Spain (J.R.); the Departments of Medicine and Laboratory Medicine, St. Michael's Hospital and University of Toronto, Toronto (K.P.); and Clinical Development, Ablynx, Zwijnaarde, Belgium (F.C., D.B., H.D.W., R.K.Z.)
| | - Filip Callewaert
- From the Department of Haematology, University College London Hospitals, Cardiometabolic Program, National Institute for Health Research UCLH-UCL Biomedical Research Center, London (M.S.); the Division of Hematology, Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); Fondazione Istituti di Ricovero e Cura a Carattere Scientifico Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (F.P.); the Department of Hematology, Saint-Antoine University Hospital, Paris (P.C.); the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Division of Hematology, Duke University School of Medicine, Durham, NC (A.M.); the Hematology Department, Universidad Católica de Valencia Hospital Dr. Peset, Valencia, Spain (J.R.); the Departments of Medicine and Laboratory Medicine, St. Michael's Hospital and University of Toronto, Toronto (K.P.); and Clinical Development, Ablynx, Zwijnaarde, Belgium (F.C., D.B., H.D.W., R.K.Z.)
| | - Debjit Biswas
- From the Department of Haematology, University College London Hospitals, Cardiometabolic Program, National Institute for Health Research UCLH-UCL Biomedical Research Center, London (M.S.); the Division of Hematology, Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); Fondazione Istituti di Ricovero e Cura a Carattere Scientifico Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (F.P.); the Department of Hematology, Saint-Antoine University Hospital, Paris (P.C.); the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Division of Hematology, Duke University School of Medicine, Durham, NC (A.M.); the Hematology Department, Universidad Católica de Valencia Hospital Dr. Peset, Valencia, Spain (J.R.); the Departments of Medicine and Laboratory Medicine, St. Michael's Hospital and University of Toronto, Toronto (K.P.); and Clinical Development, Ablynx, Zwijnaarde, Belgium (F.C., D.B., H.D.W., R.K.Z.)
| | - Hilde De Winter
- From the Department of Haematology, University College London Hospitals, Cardiometabolic Program, National Institute for Health Research UCLH-UCL Biomedical Research Center, London (M.S.); the Division of Hematology, Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); Fondazione Istituti di Ricovero e Cura a Carattere Scientifico Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (F.P.); the Department of Hematology, Saint-Antoine University Hospital, Paris (P.C.); the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Division of Hematology, Duke University School of Medicine, Durham, NC (A.M.); the Hematology Department, Universidad Católica de Valencia Hospital Dr. Peset, Valencia, Spain (J.R.); the Departments of Medicine and Laboratory Medicine, St. Michael's Hospital and University of Toronto, Toronto (K.P.); and Clinical Development, Ablynx, Zwijnaarde, Belgium (F.C., D.B., H.D.W., R.K.Z.)
| | - Robert K Zeldin
- From the Department of Haematology, University College London Hospitals, Cardiometabolic Program, National Institute for Health Research UCLH-UCL Biomedical Research Center, London (M.S.); the Division of Hematology, Department of Internal Medicine, Ohio State University, Columbus (S.R.C.); Fondazione Istituti di Ricovero e Cura a Carattere Scientifico Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, and the Department of Pathophysiology and Transplantation, University of Milan, Milan (F.P.); the Department of Hematology, Saint-Antoine University Hospital, Paris (P.C.); the Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna (P.K.); the Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland (J.A.K.H.); the Division of Hematology, Duke University School of Medicine, Durham, NC (A.M.); the Hematology Department, Universidad Católica de Valencia Hospital Dr. Peset, Valencia, Spain (J.R.); the Departments of Medicine and Laboratory Medicine, St. Michael's Hospital and University of Toronto, Toronto (K.P.); and Clinical Development, Ablynx, Zwijnaarde, Belgium (F.C., D.B., H.D.W., R.K.Z.)
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Abstract
Acquired hemophilia A (AHA) is a rare autoimmune disease caused by autoantibodies inhibiting the function of coagulation factor VIII. It is characterized by spontaneous bleeding in patients with no previous family or personal history of bleeding. Although several large registries have collected clinical data on AHA, limited information is available on the optimal management of AHA because controlled clinical trials are lacking. AHA can easily be diagnosed if the problem (prolonged activated partial thromboplastin time in a bleeding patient) is recognized. After the effects of anticoagulants are excluded, low factor VIII activity and the detection of circulating inhibitors confirms the diagnosis. However, lack of familiarity with this rare condition may delay diagnosis and adequate therapy. Treatment of AHA is based on measures for prompt hemostatic control to stop (and prevent) bleeding, immunosuppression to eradicate the autoantibodies, and supportive care for the adverse effects of that treatment and patients' often complex comorbidities. This article gives a comprehensive overview of the current knowledge about the pathophysiology, diagnosis, and treatment of AHA.
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Affiliation(s)
- Paul Knöbl
- Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria.
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19
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Abstract
Thrombotic thrombocytopenic purpura (TTP) is a clearly defined entity of the thrombotic microangiopathies (TMA), a heterogeneous group of disorders characterized by microangiopathic hemolytic anemia with red cell fragmentation, thrombocytopenia and organ dysfunction due to disturbed microcirculation. TTP is characterized by a severe deficiency of ADAMTS13 (a disintegrin and metalloproteinase with a thrombospondin type 1 motif, member 13), an enzyme responsible for physiological cleavage of von Willebrand factor (VWF). Organ dysfunction can be severe and life-threatening, and immediate start of appropriate therapy is necessary to avoid permanent damage or death. Until recently, therapeutic options were limited to symptomatic measures, which were not standardized or based on high scientific evidence. In recent years, not only considerable progress has been made in better diagnosis of TTP, but also new therapeutic strategies have been established. Initial treatment is still based on plasma exchange and symptomatic measures to protect organ function, but new concepts (immunosuppression, targeted anti-VWF or anti-complement therapy, replacement with recombinant enzymes) have recently demonstrated impressive advantages.
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Affiliation(s)
- Paul Knöbl
- Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Währinger Gürtel 18-20, 1090 Vienna, Austria
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20
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Rintelen C, Pabinger I, Knöbl P, Lechner K, Mannhatter C. Probability of Recurrence of Thrombosis in Patients with and without Factor V Leiden. Thromb Haemost 2018. [DOI: 10.1055/s-0038-1650249] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
SummaryActivated protein C (APC) resistance is a common risk factor for venous thromboembolism and is associated with the replacement of Arg 506 by Gin in the factor V gene (factor V Leiden). We investigated the risk of recurrence of venous thromboembolism in APC resistant patients heterozygous and homozygous for FV Leiden and compared these patient groups with a group of patients, who had a history of venous thromboembolism, but had neither APC resistance nor the FV Leiden mutation. APC resistance was determined in frozen blood samples from patients with a history of venous thromboembolism, who were not receiving oral anticoagulant (OAC) treatment. The plasma samples were collected between 1984 and 1991. Twenty-one patients in whom APC resistance was found in the stored plasma samples were reinvestigated in 1994 (5 males, 16 females, median [m] age 49 years, range 21-71 years). Twenty-one sex and age matched patients with venous thromboembolism (5 males, 16 females, age m = 50 years, range 25-73 years) investigated during the same time period who had a normal APC resistance test served as a control group. Patients with APC resistance as well as controls were reinvestigated for the presence of FV Leiden by genetic analysis in 1994. Of the 21 APC resistant patients, 5 were homozygous and 16 heterozygous for FV Leiden. Before the study entry homozygous patients had a significantly higher recurrence rate (5/5 patients) compared to the control group, in heterozygous patients (9/16) and controls (9/21) the recurrence rate was not significantly different.The total observation time was 21 years in patients with homozygous FV Leiden, 83 years in patients with heterozygous FV Leiden and 108 years in controls, excluding the time when patients were on OAC treatment. During the observation time the recurrence rate was highest in patients with homozygous FV Leiden (9.5 % per patient per year), but was similar in patients with heterozygous FV Leiden (4.8% per patient per year) and controls (5% per patient per year). Two of five (40%) homozygous patients, 4/16 (25%) heterozygous and 5/21 (24%) controls had at least one recurrent event during the observation period. The probability for development of thrombosis in the Kaplan-Meyer-Plot analysis was not different between the three groups.Bearing limitations of our study in mind (retrospective design, relatively small patient number) we conclude that the risk of recurrence after a thromboembolic event is not higher in patients with heterozygous FV Leiden than in patients without this mutation. Thus, it appears that the identification of heterozygous FV Leiden mutation is not an indication for long-term OAC treatment. Also, long-term OAC treatment cannot generally be recommended for homozygous patients with a single thromboembolic event. More definitive conclusions will require larger prospective studies.
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Affiliation(s)
- C Rintelen
- The First Department of Medicine, Division of Hematology and Blood Coagulation, University of Vienna, Austria
| | - I Pabinger
- The First Department of Medicine, Division of Hematology and Blood Coagulation, University of Vienna, Austria
| | - P Knöbl
- The First Department of Medicine, Division of Hematology and Blood Coagulation, University of Vienna, Austria
| | - K Lechner
- The First Department of Medicine, Division of Hematology and Blood Coagulation, University of Vienna, Austria
| | - Ch Mannhatter
- Department of Laboratory Medicine, Division of Molecular Biology, University of Vienna, Austria
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21
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Abstract
ZusammenfassungErworbene Faktor-V-Inhibitoren sind eine seltene Gerinnungsstörung. Weltweit wurden bisher 72 Fälle publiziert. Die Inzidenz scheint jedoch zuzunehmen, was wahrscheinlich auf den gehäuften Einsatz von Fibrinklebern zurückzuführen ist. Diese Metaanalyse untersucht die prädiponierenden Faktoren, die Pathogenese, diagnostische Methoden, klinisches Erscheinungsbild, therapeutische Möglichkeiten und den langfristigen Verlauf aller bisher publizierten Fälle von Faktor-V-Inhibitoren.
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22
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Knöbl P, Derfler K, Korninger L, Kapiotis S, Jäger U, Maier-Dobersberger T, Hörl W, Lechner K, Pabinger I. Elimination of Acquired Factor VIII Antibodies by Extracorporal Antibody-based Immunoadsorption (Ig-Therasorb®). Thromb Haemost 2018. [DOI: 10.1055/s-0038-1649876] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
SummaryTreatment of potent factor VIII antibodies is a difficult problem. In some cases a reduction ofthe antibody titer is necessary for effective treatment with human factor VIII concentrates. We describe a new method for extracorporal eliminationof factor VIII antibodies (antibody-based immunoadsorption). Blood is drawn from an antecubital vein, citrated, and plasma is separated with a rotating membrane. Plasma passes alternately through one of two columns filled with sepharose-coupled polyclonal sheep antibodies to human immunoglobulins (Ig-Therasorb00), whereas the other column is regenerated. Each cycle has a duration of 15 min. Three patients with high titer factor VIII antibodies (one hemophiliac and 2 with spontaneous antibodies; titers 29, 132, and 313 BU/ml, respectively) were treated. The average reduction of the antibody titer was 76.1 ± 17.2% per session. In each patient 4 sessions were necessary to reduce the antibody titer to < 1 BU/ml. The mean processed plasma volume was 6731 ± 640 ml and the mean duration of each session 3.9 ± 0.7 h. Serum IgG, IgA and IgM levels decreased by 75.3 ± 11.9%, 62.9 ± 19.1%, and 54.8 ± 23.8% respectively. The procedure was tolerated without any side effects. Thus, rapid elimination of factor VIII inhibitors can be achieved with antibody-based immunoadsorption, which can be lifesaving in some cases. This promising method should be evaluated in a larger number of patients.
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Affiliation(s)
- P Knöbl
- The Department of Medicine I, Division of Hematology and Hemostaseology, University of Vienna, Vienna, Austria
| | - K Derfler
- The Department of Medicine III, Division of Nephrology, University of Vienna, Vienna, Austria
| | - L Korninger
- The Department of Clinical Chemistry and Laboratory Medicine, Coagulation Laboratory, University of Vienna, Vienna, Austria
| | - S Kapiotis
- The Department of Clinical Chemistry and Laboratory Medicine, Coagulation Laboratory, University of Vienna, Vienna, Austria
| | - U Jäger
- The Department of Medicine I, Division of Hematology and Hemostaseology, University of Vienna, Vienna, Austria
| | - T Maier-Dobersberger
- The Department of Medicine I, Division of Hematology and Hemostaseology, University of Vienna, Vienna, Austria
| | - W Hörl
- The Department of Medicine III, Division of Nephrology, University of Vienna, Vienna, Austria
| | - K Lechner
- The Department of Medicine I, Division of Hematology and Hemostaseology, University of Vienna, Vienna, Austria
| | - I Pabinger
- The Department of Medicine I, Division of Hematology and Hemostaseology, University of Vienna, Vienna, Austria
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23
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Kiehl MG, Beutel G, Böll B, Buchheidt D, Forkert R, Fuhrmann V, Knöbl P, Kochanek M, Kroschinsky F, La Rosée P, Liebregts T, Lück C, Olgemoeller U, Schalk E, Shimabukuro-Vornhagen A, Sperr WR, Staudinger T, von Bergwelt Baildon M, Wohlfarth P, Zeremski V, Schellongowski P. Consensus statement for cancer patients requiring intensive care support. Ann Hematol 2018; 97:1271-1282. [PMID: 29704018 PMCID: PMC5973964 DOI: 10.1007/s00277-018-3312-y] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Accepted: 03/19/2018] [Indexed: 02/06/2023]
Abstract
This consensus statement is directed to intensivists, hematologists, and oncologists caring for critically ill cancer patients and focuses on the management of these patients.
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Affiliation(s)
- M G Kiehl
- Department of Internal Medicine I, Clinic Frankfurt/Oder GmbH, Müllroser Chaussee 7, 15236, Frankfurt (Oder), Germany.
| | - G Beutel
- Hannover Medical School (MHH) Clinic for Hematology, Coagulation, Oncology and Stem Cell Transplantation, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
| | - B Böll
- Department of Internal Medicine I, University Hospital, Kerpener Str. 62, 50937, Cologne, Germany
| | - D Buchheidt
- III. Medical Clinic, Medical Faculty Mannheim, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany
| | - R Forkert
- Johanniter-Hospital, Johanniterstr. 3-5, 53113, Bonn, Germany
| | - V Fuhrmann
- Clinic for Intensive Care Medicine, University Hamburg, Martinistr. 52, 20246, Hamburg, Germany
| | - P Knöbl
- Department of Medicine I, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria
| | - M Kochanek
- Department of Internal Medicine I, University Hospital, Kerpener Str. 62, 50937, Cologne, Germany
| | - F Kroschinsky
- Department of Internal Medicine I, University Hospital, Fetschertstr. 74, 01307, Dresden, Germany
| | - P La Rosée
- Department of Internal Medicine III, Schwarzwald-Baar-Klinikum, Klinikstr. 11, 78052, Villingen-Schwenningen, Germany
| | - T Liebregts
- Clinic for Stem Cell Transplantation, University Hospital Essen, Hufelandstr. 55, 45147, Essen, Germany
| | - C Lück
- Hannover Medical School (MHH) Clinic for Hematology, Coagulation, Oncology and Stem Cell Transplantation, Carl-Neuberg-Straße 1, 30625, Hannover, Germany
| | - U Olgemoeller
- Department of Cardiology and Pulmonary Medicine, University Hospital, Robert-Koch-Str. 40, 37075, Göttingen, Germany
| | - E Schalk
- Department of Hematology and Oncology, University Hospital, Leipziger Str. 44, 39120, Magdeburg, Germany
| | - A Shimabukuro-Vornhagen
- Department of Internal Medicine I, University Hospital, Kerpener Str. 62, 50937, Cologne, Germany
| | - W R Sperr
- Department of Medicine I, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria
| | - T Staudinger
- Department of Medicine I, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria
| | - M von Bergwelt Baildon
- Department of Internal Medicine I, University Hospital, Kerpener Str. 62, 50937, Cologne, Germany
| | - P Wohlfarth
- Department of Medicine I, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria
| | - V Zeremski
- Department of Hematology and Oncology, University Hospital, Leipziger Str. 44, 39120, Magdeburg, Germany
| | - P Schellongowski
- Department of Medicine I, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria
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24
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Knöbl P. Treatment of thrombotic microangiopathy with a focus on new treatment options. Hamostaseologie 2018; 33:149-59. [DOI: 10.5482/hamo-13-01-0004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Accepted: 04/12/2013] [Indexed: 11/05/2022] Open
Abstract
SummaryThe thrombotic microangiopathies (TMA) are a heterogeneous group of disorders, characterized by microangiopathic haemolytic anaemia with red cell fragmentation, thrombocytopenia and signs of organ dysfunction due to disturbed microcirculation. Current laboratory methods can be used to better distinguish some of these entities. Organ dysfunction can be severe and life-threatening, and immediate start of sufficient therapy is necessary to avoid permanent damage or death. The therapeutic options, however, are often limited to symptomatic measures, and are not standardized or based on high scientific evidence. During the preceding years, not only considerable progress has been made in better diagnosis of TMA, but also new therapeutic strategies have been established. Initial treatment still is based on plasma exchange and symptomatic measures to protect organ function. New concepts (immunosuppression, targeted anti-von Willebrand factor or anti-complement therapy, replacement with recombinant enzymes) are discussed in this article.
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Gebhart J, Hofer S, Panzer S, Quehenberger P, Sunder-Plassmann R, Hoermann G, Eigenbauer E, Haslacher H, Kepa S, Kyrle PA, Eichinger S, Knöbl P, Eischer L, Mannhalter C, Ay C, Pabinger I. High proportion of patients with bleeding of unknown cause in persons with a mild-to-moderate bleeding tendency: Results from the Vienna Bleeding Biobank (VIBB). Haemophilia 2018; 24:405-413. [PMID: 29388750 DOI: 10.1111/hae.13422] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/28/2017] [Indexed: 12/21/2022]
Abstract
INTRODUCTION Data on clinical characteristics and the prevalence of underlying coagulopathies in patients with mild-to-moderate bleeding disorders (MBDs) are scarce. AIM We established the Vienna Bleeding Biobank (VIBB) to characterize and thoroughly investigate Austrian patients with MBDs. RESULTS Four hundred eighteen patients (female = 345, 82.5%) were included. A platelet function defect (PFD) was diagnosed in 26 (6.2%) and a possible PFD in 30 (7.2%) patients. Eight patients (1.9%) were diagnosed with von Willebrand disease (VWD) (type 1 n = 6; type 2 n = 2), and 29 patients had low VWF (30-50 IU/dL). Deficiencies in factor VIII, IX, XI or XIII were found in 11 (2.6%), 3 (0.7%), 3 (0.7%) and 1 patient(s), 2 patients had dysfibrinogenaemia, and further 2 had possible PFD and FXI deficiency. Probable causal mutations were detected in 8 of 11 patients with FVIII deficiency, 2 of 3 patients with FIX deficiency and 2 of 8 patients with VWD. Three hundred three patients (72.5%) had normal results in the coagulation assays and were categorized as patients with bleeding of unknown cause (BUC). The bleeding score did not differ between patients with and without established diagnosis. A diagnosis of a bleeding disorder was more frequently made in men than in women (49.3% vs 22.9%). Male sex (OR 3.55, 95% CI: 2.02-6.22; P < .001) and blood group 0 (OR 1.86, 95% CI: 1.17-2.94; P = .008) were independently associated with diagnosis of a bleeding disorder. CONCLUSION The high rate of patients with BUC despite in-depth haemostatic assessment underlines the incompleteness of available routine laboratory tests. Males with MBDs were more likely to be diagnosed with an established bleeding disorder than females.
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Affiliation(s)
- J Gebhart
- Department of Medicine I, Clinical Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - S Hofer
- Department of Medicine I, Clinical Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - S Panzer
- Department of Blood Group Serology and Transfusion Medicine, Medical University of Vienna, Vienna, Austria
| | - P Quehenberger
- Department of Laboratory Medicine, Division of Medical and Chemical Laboratory Diagnostics, Medical University of Vienna, Vienna, Austria
| | - R Sunder-Plassmann
- Department of Laboratory Medicine, Division of Medical and Chemical Laboratory Diagnostics, Medical University of Vienna, Vienna, Austria
| | - G Hoermann
- Department of Laboratory Medicine, Division of Medical and Chemical Laboratory Diagnostics, Medical University of Vienna, Vienna, Austria
| | - E Eigenbauer
- IT-Systems and Communications, Medical University of Vienna, Vienna, Austria
| | - H Haslacher
- Department of Laboratory Medicine, Division of Medical and Chemical Laboratory Diagnostics, Medical University of Vienna, Vienna, Austria
| | - S Kepa
- Department of Medicine I, Clinical Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - P A Kyrle
- Department of Medicine I, Clinical Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - S Eichinger
- Department of Medicine I, Clinical Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - P Knöbl
- Department of Medicine I, Clinical Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - L Eischer
- Department of Medicine I, Clinical Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - C Mannhalter
- Department of Laboratory Medicine, Division of Medical and Chemical Laboratory Diagnostics, Medical University of Vienna, Vienna, Austria
| | - C Ay
- Department of Medicine I, Clinical Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - I Pabinger
- Department of Medicine I, Clinical Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
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Peyvandi F, Scully M, Kremer Hovinga JA, Knöbl P, Cataland S, De Beuf K, Callewaert F, De Winter H, Zeldin RK. Caplacizumab reduces the frequency of major thromboembolic events, exacerbations and death in patients with acquired thrombotic thrombocytopenic purpura. J Thromb Haemost 2017; 15:1448-1452. [PMID: 28445600 DOI: 10.1111/jth.13716] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Indexed: 11/25/2022]
Abstract
Essentials Acquired thrombotic thrombocytopenic purpura (aTTP) is linked with significant morbidity/mortality. Caplacizumab's effect on major thromboembolic (TE) events, exacerbations and death was studied. Fewer caplacizumab-treated patients had a major TE event, an exacerbation, or died versus placebo. Caplacizumab has the potential to reduce the acute morbidity and mortality associated with aTTP. SUMMARY Background Acquired thrombotic thrombocytopenic purpura (aTTP) is a life-threatening autoimmune thrombotic microangiopathy. In spite of treatment with plasma exchange and immunosuppression, patients remain at risk for thrombotic complications, exacerbations, and death. In the phase II TITAN study, treatment with caplacizumab, an anti-von Willebrand factor Nanobody® was shown to reduce the time to confirmed platelet count normalization and exacerbations during treatment. Objective The clinical benefit of caplacizumab was further investigated in a post hoc analysis of the incidence of major thromboembolic events and exacerbations during the study drug treatment period and thrombotic thrombocytopenic purpura-related death during the study. Methods The Standardized Medical Dictionary for Regulatory Activities (MedDRA) Query (SMQ) for 'embolic and thrombotic events' was run to investigate the occurrence of major thromboembolic events and exacerbations in the safety population of the TITAN study, which consisted of 72 patients, of whom 35 received caplacizumab and 37 received placebo. Results Four events (one pulmonary embolism and three aTTP exacerbations) were reported in four patients in the caplacizumab group, and 20 such events were reported in 14 patients in the placebo group (two acute myocardial infarctions, one ischemic stroke, one hemorrhagic stroke, one pulmonary embolism, one deep vein thrombosis, one venous thrombosis, and 13 aTTP exacerbations). Two of the placebo-treated patients died from aTTP during the study. Conclusion In total, 11.4% of caplacizumab-treated patients and 43.2% of placebo-treated patients experienced one or more major thromboembolic events, experienced an exacerbation, or died. This analysis shows the potential for caplacizumab to reduce the risk of major thromboembolic morbidities and mortality associated with aTTP.
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Affiliation(s)
- F Peyvandi
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, IRCCS Ca' Granda Ospedale Maggiore Policlinico, Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| | - M Scully
- Department of Haematology, University College London Hospital, London, UK
| | - J A Kremer Hovinga
- University Clinic of Hematology & Central Hematology Laboratory, Inselspital, Bern University Hospital and Department of Clinical Research, University of Bern, Bern, Switzerland
| | - P Knöbl
- Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna, Austria
| | - S Cataland
- Department of Internal Medicine, Ohio State University, Columbus, OH, USA
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Singer J, Testori C, Schellongowski P, Handisurya A, Müller C, Reitter EM, Graninger W, Knöbl P, Staudinger T, Winkler S, Thalhammer F. A case report of septic shock syndrome caused by S. pneumoniae in an immunocompromised patient despite of vaccination. BMC Infect Dis 2017. [PMID: 28641577 PMCID: PMC5480414 DOI: 10.1186/s12879-017-2481-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Background and case presentation We report a case of septic shock syndrome caused by Streptococcus pneumoniae in a patient who had undergone splenectomy due to an autoimmune lymphoproliferative syndrome (ALPS), which is characterized as a dysfunction of immunoregulation. Although the patient was vaccinated with a conjugated polysaccharide vaccine after the splenectomy, he was still susceptible to S. pneumoniae infection, because the isolated serovar (24F), a serovar long thought to be apathogenic, is not covered by any vaccine currently approved, neither a conjugated nor an unconjugated polysaccharide one. Conclusions This case demonstrates that, due to presence of different serovars, also infections with bacteria against which patients are vaccinated have to be considered as differential diagnosis. Although vaccine development has extended the coverage of S. pneumoniae from 7 to 23 serovars within recent years, there is still demand for novel vaccines which can provide broader protection also against so-thought “apathogenic” strains, especially for groups at high risk.
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Affiliation(s)
- Josef Singer
- Division of Infectious Diseases and Tropical Medicine, Department of Internal Medicine I, Medical University of Vienna, 1090, Vienna, Austria
| | - Christoph Testori
- Department of Emergency Medicine, Medical University of Vienna, 1090, Vienna, Austria
| | - Peter Schellongowski
- Intensive Care Unit 13i2, Department of Internal Medicine I, Medical University of Vienna, 1090, Vienna, Austria
| | - Ammon Handisurya
- Clinical Department for Nephrology and Dialysis, Department of Internal Medicine III, Medical University of Vienna, 1090, Vienna, Austria
| | - Catharina Müller
- Division of Infectious Diseases and Tropical Medicine, Department of Internal Medicine I, Medical University of Vienna, 1090, Vienna, Austria
| | - Eva-Maria Reitter
- Division of Infectious Diseases and Tropical Medicine, Department of Internal Medicine I, Medical University of Vienna, 1090, Vienna, Austria
| | - Wolfgang Graninger
- Division of Infectious Diseases and Tropical Medicine, Department of Internal Medicine I, Medical University of Vienna, 1090, Vienna, Austria
| | - Paul Knöbl
- Clinical Department of Hematology and Hemostaseology, Department of Internal Medicine I, Medical University of Vienna, 1090, Vienna, Austria
| | - Thomas Staudinger
- Intensive Care Unit 13i2, Department of Internal Medicine I, Medical University of Vienna, 1090, Vienna, Austria
| | - Stefan Winkler
- Division of Infectious Diseases and Tropical Medicine, Department of Internal Medicine I, Medical University of Vienna, 1090, Vienna, Austria
| | - Florian Thalhammer
- Division of Infectious Diseases and Tropical Medicine, Department of Internal Medicine I, Medical University of Vienna, 1090, Vienna, Austria.
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Abstract
The thrombotic-thrombocytopenic purpura (TTP) is an acute, life-threatening disease, characterised by enhanced platelet aggregation, disturbed microcirculation and organ dysfunction. With the currently available treatment (plasma exchange, infusions, corticosteroids) mortality ist still as high as 10-15 %. Recent, pathophysiology-based developments may improve the outcome. The most promising candidates for future treatment of TTP are: rituximab for termination of the autoimmune process, caplacizumab for prevention of platelet-VWF-interaction, and recombinant ADAMTS13 for replacement of the inhibited or missing enzyme.
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Affiliation(s)
- Paul Knöbl
- Prof.Dr. Paul Knöbl, Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Währinger Gürtel 18-20, A-1090 Vienna, Austria, Phone: +43-1-40400-4410, Fax: +43-1-40495-17446, E-Mail:
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Abstract
Acquired haemophilia is a potentially life-threatening bleeding disorder caused by the development of autoantibodies against coagulation factors, most commonly against factor (F) VIII (acquired haemophilia A; AHA). In around half of patients, an underlying disorder is associated with AHA; the remaining cases are idiopathic. Typically, the disorder presents with bleeding, ranging from mild to life- and limb-threatening, in patients with no personal or family bleeding history. Diagnosis involves an isolated prolongation of the activated partial thromboplastin time, without correction in mixing studies, low FVIII activity levels and evidence of a FVIII inhibitor. As AHA is rare, a lack of familiarity of the condition may result in delayed diagnosis, and prompt haemostatic control is required to reduce morbidity and mortality. Bypassing agents (recombinant activated factor VII or activated prothrombin complex concentrates) can be used to control acute bleeding, and immunosuppression is necessary to eradicate the inhibitor. As clinical trials in this rare and heterogeneous disease are difficult, current evidence comes from observational studies, including registries. This review will focus on the diagnostic and therapeutic challenges of AHA and summarise how understanding of this complex condition has increased based on recent registry data.
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Affiliation(s)
- Craig M Kessler
- Division of Hematology-Oncology, Georgetown University Medical Center, Washington, DC, USA
| | - Paul Knöbl
- Division of Hematology and Hemostasis, Department of Medicine 1, Medical University of Vienna, Vienna, Austria
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Geissler K, Jäger E, Barna A, Sliwa T, Knöbl P, Schwarzinger I, Gisslinger H, Valent P. In vitroandin vivoeffects of JAK2 inhibition in chronic myelomonocytic leukemia. Eur J Haematol 2016; 97:562-567. [DOI: 10.1111/ejh.12773] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/29/2016] [Indexed: 12/22/2022]
Affiliation(s)
- Klaus Geissler
- 5th Medical Department with Hematology, Oncology and Palliative Medicine; Hospital Hietzing; Vienna Austria
| | - Eva Jäger
- Department of Laboratory Medicine; Medical University of Vienna; Vienna Austria
| | - Agnes Barna
- Blood Transfusion Service for Upper Austria; Austrian Red Cross; Linz Austria
| | - Thamer Sliwa
- 3rd Medical Department; Hanusch Hospital; Vienna Austria
| | - Paul Knöbl
- Division of Hematology and Hemostaseology; Department of Internal Medicine I; Medical University of Vienna; Vienna Austria
| | - Ilse Schwarzinger
- Department of Laboratory Medicine; Medical University of Vienna; Vienna Austria
| | - Heinz Gisslinger
- Division of Hematology and Hemostaseology; Department of Internal Medicine I; Medical University of Vienna; Vienna Austria
| | - Peter Valent
- Division of Hematology and Hemostaseology; Department of Internal Medicine I; Medical University of Vienna; Vienna Austria
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Knöbl P. [Thrombocytopenia in the intensive care unit : Diagnosis, differential diagnosis, and treatment]. Med Klin Intensivmed Notfmed 2016; 111:425-33. [PMID: 27255225 PMCID: PMC7095953 DOI: 10.1007/s00063-016-0174-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2015] [Accepted: 04/08/2016] [Indexed: 01/16/2023]
Abstract
Thrombozytopenie ist ein häufiges Phänomen in der Intensivmedizin. Eine Vielzahl von Ursachen kann für erniedrigte Plättchenzahlen verantwortlich sein. Da Plättchen Teil der primären Hämostase sind, ist Blutungsneigung die wichtigste Komplikation einer Thrombopenie. Strukturiertes Aufarbeiten der Differenzialdiagnose und Identifikation der Ursache ist essenziell, da die verschiedenen Krankheitsbilder unterschiedliche diagnostische und therapeutische Maßnahmen erfordern. Eine erniedrigte Thrombozytenzahl ist ein starker Prädiktor der Mortalität kritisch kranker Patienten. Dieser Artikel fasst die Differenzialdiagnose und die diagnostische Aufarbeitung der Thrombopenie in der Intensivmedizin zusammen und gibt einen Überblick über die wichtigsten Krankheitsbilder und die therapeutischen Optionen.
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Affiliation(s)
- P Knöbl
- Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Österreich.
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Werwitzke S, Geisen U, Nowak-Göttl U, Eichler H, Stephan B, Scholz U, Holstein K, Klamroth R, Knöbl P, Huth-Kühne A, Bomke B, Tiede A. Diagnostic and prognostic value of factor VIII binding antibodies in acquired hemophilia A: data from the GTH-AH 01/2010 study. J Thromb Haemost 2016; 14:940-7. [PMID: 26988717 DOI: 10.1111/jth.13304] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Indexed: 11/26/2022]
Abstract
UNLABELLED Essentials Factor VIII (FVIII) binding IgG detected by ELISA could be an alternative to the Bethesda assay. We studied the performance of anti-FVIII IgG ELISA in patients with acquired hemophilia and controls. Anti-FVIII IgG > 99th percentile of controls was highly sensitive and specific. Patients with high anti-FVIII IgG have a lower chance of achieving remission. SUMMARY Background Acquired hemophilia A is a severe bleeding disorder that requires fast and accurate diagnosis as it occurs often unexpectedly in previously healthy men and women of every age. The Nijmegen-modified Bethesda assay is the diagnostic reference standard for detecting neutralizing autoantibodies against factor VIII (FVIII), but is not widely available, not ideal for quantifying the complex type 2 inhibitors seen in acquired hemophilia, and suffers from high inter-laboratory variability. Objectives To assess the diagnostic and prognostic value of FVIII-binding antibodies as detected by ELISA compared with the Nijmegen Bethesda assay. Methods Samples from the time of first diagnosis and clinical data were available from 102 patients with acquired hemophilia enrolled in the prospective GTH-AH 01/2010 study. Controls (n = 102) were matched for gender and age. Diagnostic cut-offs were determined by receiver-operator curve analysis. The prognostic value was assessed in 92 of the 102 patients by Cox regression analysis of time to partial remission. Results Anti-FVIII IgG above the 99th percentile (> 15 arbitrary units per mL) revealed high sensitivity and specificity (both 0.99; 95% confidence interval, 0.95-1.0) for diagnosing acquired hemophilia. The likelihood of achieving partial remission was related to anti-FVIII IgG concentration (< 300 arbitrary units, 1.0; 300-1050, 0.65; > 1050, 0.39). The Bethesda titer was only associated with the likelihood of partial remission when analyzed in the central laboratory, but not when data from local GTH study sites were used. Conclusion Although the Nijmegen-modified Bethesda assay is the reference standard for demonstrating neutralizing antibodies, the detection of FVIII-binding antibodies by ELISA is similarly sensitive and specific for diagnosing acquired hemophilia. In addition, anti-FVIII IgG may provide prognostic information.
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Affiliation(s)
- S Werwitzke
- Hematology, Hemostasis, Oncology, and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - U Geisen
- Institute for Clinical Chemistry and Laboratory Medicine, Freiburg University Hospital, Freiburg, Germany
| | - U Nowak-Göttl
- Clinical Chemistry, University Medical Center Schleswig-Holstein, Campus Lübeck, Lübeck, Germany
| | - H Eichler
- Clinical Hemostaseology and Transfusion Medicine, Saarland University Hospital, Homburg/Saar, Germany
| | - B Stephan
- Clinical Hemostaseology and Transfusion Medicine, Saarland University Hospital, Homburg/Saar, Germany
| | - U Scholz
- Center of Coagulation Disorders, Leipzig, Germany
| | - K Holstein
- Hematology and Oncology, University Hospital Eppendorf, Hamburg, Germany
| | - R Klamroth
- Internal Medicine, Vivantes Clinic Friedrichshain, Berlin, Germany
| | - P Knöbl
- Hematology and Hemostasis, Vienna Medical University, Vienna, Austria
| | - A Huth-Kühne
- Hemophilia Care Center, SRH Kurpfalzkrankenhaus Heidelberg, Heidelberg, Germany
| | - B Bomke
- Hemostasis, Hemotherapy, and Transfusion Medicine, Heinrich Heine University Center Medical Center, Düsseldorf, Germany
| | - A Tiede
- Hematology, Hemostasis, Oncology, and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
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Peyvandi F, Scully M, Kremer Hovinga JA, Cataland S, Knöbl P, Wu H, Artoni A, Westwood JP, Mansouri Taleghani M, Jilma B, Callewaert F, Ulrichts H, Duby C, Tersago D. Caplacizumab for Acquired Thrombotic Thrombocytopenic Purpura. N Engl J Med 2016; 374:511-22. [PMID: 26863353 DOI: 10.1056/nejmoa1505533] [Citation(s) in RCA: 396] [Impact Index Per Article: 49.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND Acquired thrombotic thrombocytopenic purpura (TTP) is caused by aggregation of platelets on ultralarge von Willebrand factor multimers. This microvascular thrombosis causes multiorgan ischemia with potentially life-threatening complications. Daily plasma exchange and immunosuppressive therapies induce remission, but mortality and morbidity due to microthrombosis remain high. METHODS Caplacizumab, an anti-von Willebrand factor humanized single-variable-domain immunoglobulin (Nanobody), inhibits the interaction between ultralarge von Willebrand factor multimers and platelets. In this phase 2, controlled study, we randomly assigned patients with acquired TTP to subcutaneous caplacizumab (10 mg daily) or placebo during plasma exchange and for 30 days afterward. The primary end point was the time to a response, defined as confirmed normalization of the platelet count. Major secondary end points included exacerbations and relapses. RESULTS Seventy-five patients underwent randomization (36 were assigned to receive caplacizumab, and 39 to receive placebo). The time to a response was significantly reduced with caplacizumab as compared with placebo (39% reduction in median time, P=0.005). Three patients in the caplacizumab group had an exacerbation, as compared with 11 patients in the placebo group. Eight patients in the caplacizumab group had a relapse in the first month after stopping the study drug, of whom 7 had ADAMTS13 activity that remained below 10%, suggesting unresolved autoimmune activity. Bleeding-related adverse events, most of which were mild to moderate in severity, were more common with caplacizumab than with placebo (54% of patients vs. 38%). The frequencies of other adverse events were similar in the two groups. Two patients in the placebo group died, as compared with none in the caplacizumab group. CONCLUSIONS Caplacizumab induced a faster resolution of the acute TTP episode than did placebo. The platelet-protective effect of caplacizumab was maintained during the treatment period. Caplacizumab was associated with an increased tendency toward bleeding, as compared with placebo. (Funded by Ablynx; ClinicalTrials.gov number, NCT01151423.).
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Affiliation(s)
- Flora Peyvandi
- From the Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico (F.P., A.A.), and the Department of Pathophysiology and Transplantation, University of Milan (F.P.) - both in Milan, Italy; the Department of Haematology, University College London Hospital (M.S., J.-P.W.), and the National Institute for Health Research Biomedical Research Centre at University College London Hospitals NHS Foundation Trust and University College London (M.S.) - both in London, U.K.; the University Clinic of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital and the University of Bern - both in Bern, Switzerland (J.A.K.H., M.M.T.); the Departments of Internal Medicine (S.C.) and Pathology (H.W.), Ohio State University, Columbus; the Departments of Medicine, Division of Hematology and Hemostasis (P.K.), and Clinical Pharmacology (B.J.), Medical University of Vienna, Vienna, Austria; and the Departments of Clinical Development (F.C., C.D., D.T.) and Pharmacology (H.U.), Ablynx, Zwijnaarde, Belgium
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Wohlfarth P, Carlström A, Staudinger T, Clauss S, Hermann A, Rabitsch W, Bojic A, Skrabs C, Porpaczy E, Schiefer AI, Valent P, Knöbl P, Agis H, Hauswirth A, Jäger U, Kundi M, Sperr WR, Schellongowski P. Incidence of intensive care unit admission, outcome and post intensive care survival in patients with diffuse large B-cell lymphoma. Leuk Lymphoma 2016; 57:1831-8. [DOI: 10.3109/10428194.2015.1106537] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Jilma-Stohlawetz P, Quehenberger P, Schima H, Stoiber M, Knöbl P, Steinlechner B, Felli A, Jilma B. Acquired von Willebrand factor deficiency caused by LVAD is ADAMTS-13 and platelet dependent. Thromb Res 2015; 137:196-201. [PMID: 26616301 DOI: 10.1016/j.thromres.2015.11.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 10/29/2015] [Accepted: 11/03/2015] [Indexed: 10/22/2022]
Abstract
INTRODUCTION The high shear rates induced by left ventricular assist devices cause acquired von Willebrand disease (aVWD). We hypothesised that an ex vivo model could be established to study whether mechanical shear stress alone causes aVWD or whether this process depends also on the VWF cleavage protein ADAMTS-13 and on platelets. MATERIALS AND METHODS Healthy volunteers and two patients with congenital ADAMTS-13 deficiency donated blood. In vitro closed extracorporeal circuits were established using medically approved left ventricular assist devices (LVAD). VWF multimers were quantified by gel electrophoresis; VWF antigen, ristocetin cofactor activity (VWF:RCo), ADAMTS-13 levels and platelet function were assessed. RESULTS The high shear stress in the extracorporeal circulation rapidly decreased VWF:RCo and thereby the VWF:RCo/VWF:Ag ratio by 47% (p<0.01) to pathologically low values. Concomitantly, high molecular weight multimers (HMWM) decreased: up to 14-15 mers were visible on the gels at baseline, which were reduced by a maximum of 6-7 mers, corresponding to an average 68% lower densitometry signal of HMWM (p<0.001). This was accompanied by marked reduction of aggregation by various agonists (p<0.005). In contrast, the two patients with congenital thrombocytopenic purpura with virtually complete deficiency of ADAMTS-13 activity had only a minimal or no decrease in multimers (p<0.005 vs. healthy controls). Similarly, no or minimal depletion of large multimers occurred, when normal plasma circulated without platelets. CONCLUSION An in vitro model for LVAD associated aVWD demonstrated that ADAMTS-13 and platelets contribute to the depletion of HMWM of VWF.
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Affiliation(s)
- Petra Jilma-Stohlawetz
- Department of Laboratory Medicine, Division of Medical and Chemical Laboratory Diagnostics, Medical University of Vienna, Austria
| | - Peter Quehenberger
- Department of Laboratory Medicine, Division of Medical and Chemical Laboratory Diagnostics, Medical University of Vienna, Austria
| | - Heinrich Schima
- Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Austria
| | - Martin Stoiber
- Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Austria
| | - Paul Knöbl
- Department of Internal Medicine I, Division of Haematology and Haemostasis, Medical University of Vienna, Austria
| | - Barbara Steinlechner
- Division of Cardiothoracic and Vascular Anesthesia, Medical University of Vienna, Austria
| | - Alessia Felli
- Division of Cardiothoracic and Vascular Anesthesia, Medical University of Vienna, Austria
| | - Bernd Jilma
- Clinical Pharmacology, Medical University of Vienna, Austria.
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Affiliation(s)
- P Knöbl
- Department of Medicine 1, Medical University of Vienna, Vienna, Austria
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Grillberger R, Gruber B, Skalicky S, Schrenk G, Knöbl P, Plaimauer B, Turecek PL, Scheiflinger F, Rottensteiner H. A novel flow-based assay reveals discrepancies in ADAMTS-13 inhibitor assessment as compared with a conventional clinical static assay. J Thromb Haemost 2014; 12:1523-32. [PMID: 25040659 DOI: 10.1111/jth.12653] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Accepted: 07/03/2014] [Indexed: 01/18/2023]
Abstract
BACKGROUND Several static Bethesda-type assays are routinely used to determine ADAMTS-13-neutralizing autoantibodies in acquired thrombotic thrombocytopenic purpura (TTP), but the inhibitory activity of these antibodies has not been thoroughly evaluated under the more physiologic condition of flow. OBJECTIVES We investigated whether ADAMTS-13 inhibitor assessment with the FRETS-VWF73 assay is predictive for evaluation under flow. METHODS Anti-ADAMTS-13 autoantibodies were purified from patients with acquired TTP by chromatography involving an ADAMTS-13 affinity matrix and/or protein G. ADAMTS-13 activity was measured with the FRETS-VWF73 assay and a novel flow assay determining the ADAMTS-13-mediated decrease in platelet aggregate surface coverage, caused by perfusion of a suspension containing platelets, erythrocytes and von Willebrand factor (VWF) over a surface coated with extracellular matrix components. The neutralizing activities of ADAMTS-13 inhibitors were compared under static conditions and under flow by use of the two assays. RESULTS The suitability of the flow-based ADAMTS-13 activity assay for quantification of ADAMTS-13 inhibitors could be demonstrated by reversibility of the ADAMTS-13-dependent decrease in surface coverage upon addition of goat ADAMTS-13 antiserum. Testing the neutralizing activity of purified autoantibodies from six patients in the flow assay according to their FRETS-VWF73-based inhibitor titers gave rise to vastly different inhibitory effects, indicating a discrepancy in inhibitor assessment between static and flow conditions. CONCLUSIONS Anti-ADAMTS-13 autoantibodies may show inhibitory properties in vivo that are not consistent with the ADAMTS-13 inhibitor levels determined in routine static assays, possibly because certain epitopes are selectively exposed under shear. Consequently, the course of disease and treatment efficacy may vary among TTP patients, despite common inhibitor titers.
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Abstract
Thrombotic thrombocytopenic purpura (TTP) is a clearly defined entity of thrombotic microangiopathies (TMAs), a heterogeneous group of disorders characterized by microangiopathic hemolytic anemia with red cell fragmentation, thrombocytopenia, and organ dysfunction due to disturbed microcirculation. TTP is characterized by a severe deficiency of ADAMTS13 (a disintegrin and metalloproteinase with a thrombospondin type 1 motif, member 13), an enzyme responsible for physiological cleavage of von Willebrand factor (VWF). Organ dysfunction can be severe and life threatening, and immediate start of appropriate therapy is necessary to avoid permanent damage or death. The therapeutic options, however, are often limited to symptomatic measures, and are not standardized or based on high scientific evidence. During the last years, not only considerable progress has been made in better diagnosis of TTP, but also new therapeutic strategies have been established. Initial treatment still is based on plasma exchange and symptomatic measures to protect organ function, but new concepts (immunosuppression, targeted anti-VWF or anticomplement therapy, and replacement with recombinant enzymes) are currently under development.
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Affiliation(s)
- Paul Knöbl
- Department of Medicine 1, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna, Austria
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Ferrari S, Palavra K, Gruber B, Kremer Hovinga JA, Knöbl P, Caron C, Cromwell C, Aledort L, Plaimauer B, Turecek PL, Rottensteiner H, Scheiflinger F. Persistence of circulating ADAMTS13-specific immune complexes in patients with acquired thrombotic thrombocytopenic purpura. Haematologica 2013; 99:779-87. [PMID: 24241492 DOI: 10.3324/haematol.2013.094151] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Anti-ADAMTS13 autoantibodies are the main cause of acquired thrombotic thrombocytopenic purpura. Binding of these antibodies to ADAMTS13 eventually results in the formation of antigen-antibody immune complexes. Circulating ADAMTS13-specific immune complexes have been described in patients with acquired thrombotic thrombocytopenic purpura, although the prevalence and persistence of these immune complexes over time have hitherto remained elusive. Here, we analyzed a large cohort of patients with acquired thrombotic thrombocytopenic purpura for the presence of free and complexed anti-ADAMTS13 antibodies. In the acute phase (n=68), 100% of patients had free IgG antibodies and 97% had ADAMTS13-specific immune complexes. In remission (n=28), 75% of patients had free antibodies (mainly IgG) and 93% had ADAMTS13-specific immune complexes. Free antibodies were mainly of subclasses IgG1 and IgG4, whereas IgG4 was by far the most prevalent in ADAMTS13-specific immune complexes. Comparison of ADAMTS13 inhibitor and anti-ADAMTS13 IgG (total and subclasses) antibody titers in acute phase and in remission samples showed a statistically significant decrease in all parameters in remission. Although non-significant, a trend towards reduced or undetectable titers in remission was also observed for ADAMTS13-specific immune complexes of subclasses IgG1, IgG2 and IgG3. No such trend was discernible for IgG4; IgG4 immune complexes persisted over years, even in patients who had been treated with rituximab and who showed no features suggesting relapse.
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Jilma-Stohlawetz P, Knöbl P, Gilbert JC, Jilma B. The anti-von Willebrand factor aptamer ARC1779 increases von Willebrand factor levels and platelet counts in patients with type 2B von Willebrand disease. Thromb Haemost 2012; 108:284-90. [PMID: 22740102 DOI: 10.1160/th11-12-0889] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2012] [Accepted: 05/03/2012] [Indexed: 11/05/2022]
Abstract
Blockade of hyperactive von Willebrand factor (VWF) by ARC1779 blunted the platelet drop induced by desmopressin in patients with type 2B von Willebrand disease (VWD). Thus, we hypothesised that ARC1779 may increase VWF levels and correct thrombocytopenia. Three thrombocytopenic patients suffering from type 2B VWD received a loading dose of 0.23 mg/kg ARC1779 followed by 4 μg/kg/min intravenously for 72 hours in a prospective clinical trial. ARC1779 was well tolerated and safe. Plasma concentrations of ARC1779 increased to 76 μg/ml (59-130) leading to an immediate decrease of free VWF A1 domains. VWF/FVIII levels increased as early as 12 h after start of infusion, peaked near the end of infusion, and returned to baseline at follow-up. VWF ristocetin cofactor activity (VWF:RCo) showed a median 10-fold increase 8 hours after end of infusion, while the median VWF-antigen and FVIII increase was less (5-fold and 4-fold, respectively). Most importantly inhibition of hyperactive VWF rapidly increased platelet counts from 40 x 10(9)/l (38-58 x 10(9)//l) to a maximum of 146 x 10(9)//l (107-248 x 10(9)//l). In conclusion, ARC1779 markedly increases VWF/FVIII levels and most importantly improves or even corrects thrombocytopenia in VWD type 2B patients. This underscores the in vivo potency of ARC1779.
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Affiliation(s)
- Petra Jilma-Stohlawetz
- Department of Clinical Pharmacology, Medical University of Vienna, Währinger Guertel 18-20, 1090 Vienna, Austria
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41
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Ferrari S, Knöbl P, Kolovratova V, Plaimauer B, Turecek PL, Varadi K, Rottensteiner H, Scheiflinger F. Inverse correlation of free and immune complex-sequestered anti-ADAMTS13 antibodies in a patient with acquired thrombotic thrombocytopenic purpura. J Thromb Haemost 2012; 10:156-8. [PMID: 22044668 DOI: 10.1111/j.1538-7836.2011.04548.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Jilma-Stohlawetz P, Gilbert JC, Gorczyca ME, Knöbl P, Jilma B. A dose ranging phase I/II trial of the von Willebrand factor inhibiting aptamer ARC1779 in patients with congenital thrombotic thrombocytopenic purpura. Thromb Haemost 2011; 106:539-47. [PMID: 21833442 DOI: 10.1160/th11-02-0069] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2011] [Accepted: 05/26/2011] [Indexed: 11/05/2022]
Abstract
Congenital thrombotic thrombocytopenic purpura (TTP) is a very rare but potentially life-threatening disorder. This phase I/II trial compared the pharmacokinetics and pharmacodynamics and safety of three different administration modes of the anti-von Willebrand factor (VWF) aptamer ARC1779. This was a prospective clinical trial with a partial cross-over design: three periods comprised subcutaneous injections of 50 mg of ARC1779 on seven subsequent days, a low-dose infusion of ARC1779 (0.002 mg/kg/min) for 24-72 hours and a high-dose infusion (0.004-0.006 mg/kg/min) up to 72 hours. ARC1779 concentrations were determined with high performance liquid chromatography, VWF inhibition was measured with enzyme immunoassay and platelet function was determined with the platelet function analyser (PFA-100) and impedance aggregometry. ARC1779 was well tolerated without any bleeding at concentrations spanning over three orders of magnitude. The daily s.c. injection yielded plasma levels (0.5 μg/ml) of the drug that were too low to sufficiently suppress VWF. The low-dose i.v. infusion increased platelet counts in one patient, whereas the high i.v. dose increased plasma concentrations up to 69 μg/ml, completely blocked free A1 domains, VWF-dependent platelet plug formation and enhanced platelet counts in 2/3 patients. In conclusion, infusion of ARC1779 dose-dependently inhibits VWF-dependent platelet function and during infusion ARC1779 increases or stabilises platelet counts in congenital TTP. However, the tested doses, particularly the daily s.c. injections, did not correct all clinical or laboratory features of TTP.
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Plaimauer B, Kremer Hovinga JA, Juno C, Wolfsegger MJ, Skalicky S, Schmidt M, Grillberger L, Hasslacher M, Knöbl P, Ehrlich H, Scheiflinger F. Recombinant ADAMTS13 normalizes von Willebrand factor-cleaving activity in plasma of acquired TTP patients by overriding inhibitory antibodies. J Thromb Haemost 2011; 9:936-44. [PMID: 21294825 DOI: 10.1111/j.1538-7836.2011.04224.x] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Severe deficiency of the von Willebrand factor (VWF)-cleaving protease ADAMTS13 as observed in acquired thrombotic thrombocytopenic purpura (TTP) is caused by inhibitory and non-inhibitory autoantibodies directed against the protease. Current treatment with plasma exchange is considered to remove circulating antibodies and to concurrently replenish the deficient enzyme. OBJECTIVES To explore the use of recombinant ADAMTS13 (rADAMTS13) as a potential therapeutic agent in acquired TTP, we investigated its efficacy in normalizing VWF-cleaving activity in the presence of ADAMTS13 inhibitors. METHODS Thirty-six plasma samples from TTP patients were adjusted to predefined inhibitor titers, and recovery of ADAMTS13 activity was analyzed following supplementation with rADAMTS13. RESULTS We showed a linear relation between the inhibitor titer measured and effective rADAMTS13 concentration necessary for reconstitution of VWF-cleaving activity in the presence of neutralizing autoantibodies. CONCLUSIONS Our results support the further investigation of the potential therapeutic applicability of rADAMTS13 as an adjunctive therapy in acquired TTP.
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Affiliation(s)
- B Plaimauer
- Baxter Innovations GmbH, Wagramer Strasse, Vienna, Austria
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Jilma B, Siller-Matula J, Gilbert J, Knöbl P, Jilma-Stohlawetz P, Gorczyca M. Inhibition of von Willebrand factor by ARC1779 in patients with acute thrombotic thrombocytopenic purpura. Thromb Haemost 2011; 105:545-52. [DOI: 10.1160/th10-08-0520] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2010] [Accepted: 11/25/2010] [Indexed: 11/05/2022]
Abstract
SummaryThrombotic thrombocytopenic purpura (TTP) can cause severe organ damage due to enhanced platelet aggregation by ultra-large von Wille-brand factor (VWF) multimers. Thus inhibition of VWF by the anti-VWF ARC1779 might potentially be beneficial for TTP patients. This prospective trial tested the safety, pharmacokinetics and pharmacodynamics of the anti-VWF aptamer ARC1779 added to plasma exchange therapy (PEX) in patients with acute TTP. Seven patients received bolus primed continuous i.v. infusions of ARC1779 (1–2 μg/kg/min) in addition to PEX until remission of TTP was induced or for 14 days. Mean steady state ARC1779 plasma concentrations of 9.9 μg/ml reduced VWF activity to 5% (mean baseline activity was 125% in TTP patients compared to a reference plasma). PEX reduced ARC1779 levels by 50%, but steady state concentrations were restored rapidly with a mini-bolus. After discontinuation of PEX, ARC1779 alone further increased platelet counts in one patient. Stopping ARC1779 was associated with an immediate drop of platelet counts in this patient. This suggests that ARC1779 can block the progression of TTP in patients with severe ADAMTS13 is deficiency. ARC1779 was generally well tolerated without any signs of bleeding. Pharmacokinetics and pharmacodynamics of ARC1779 were well predictable and in agreement with those observed in a previous trial with healthy volunteers. Based on its mechanism of action and the observed effect on platelet counts, ARC1779 used as an adjunctive to PEX may help accelerate recovery from organ dysfunction.
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Jilma B, Paulinska P, Jilma-Stohlawetz P, Gilbert JC, Hutabarat R, Knöbl P. A randomised pilot trial of the anti-von Willebrand factor aptamer ARC1779 in patients with type 2b von Willebrand disease. Thromb Haemost 2010; 104:563-70. [PMID: 20589313 DOI: 10.1160/th10-01-0027] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2010] [Accepted: 04/23/2010] [Indexed: 11/05/2022]
Abstract
Desmopressin aggravates thrombocytopenia in type 2B von Willebrand disease (VWF type 2B) by release of large and hyper-adhesive von Willebrand Factor (VWF) multimers. This pilot study investigated whether the anti-VWF aptamer ARC1779 can prevent desmopressin-induced thrombocytopenia and interferes with the excessive VWF turnover in patients with VWF type 2B. Concentration effect curves of ARC1779 were established for five patients in vitro and two patients with VWF type 2B were treated by infusion of ARC1779, desmopressin, or their combination in a randomised, controlled, double-blind design. ARC1779 concentrations in the range of 1-3 microg/ml blocked free A1 domain binding sites by 90% in vitro. In vivo, desmopressin alone induced a profound (-90%) drop in platelet counts in one of the patients. ARC1779 (4-5 microg/ml) completely inhibited VWF A1 domains and prevented this desmopressin-induced platelet drop. Desmopressin alone increased VWF antigen two- to three-fold, accompanied by concordant changes in VWF Ristocetin cofactor activity (RCo) and coagulation factor VIII activity. ARC1779 substantially enhanced the desmopressin-induced maximal increase in these parameters, and improved multimer patterns. No treatment related adverse events were observed and no bleeding occurred despite marked thrombocytopenia. These data provide first proof of concept in humans and evidence that ARC1779 is a potent inhibitor of VWF. ARC1779 prevented the rapid consumption of VWF multimers together with agglutinated platelets that occurred in response to desmopressin challenge in patients with VWD type 2B.
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Affiliation(s)
- Bernd Jilma
- Department of Clinical Pharmacology, Medical University of Vienna, Austria.
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Mayr FB, Knöbl P, Jilma B, Siller-Matula JM, Wagner PG, Schaub RG, Gilbert JC, Jilma-Stohlawetz P. The aptamer ARC1779 blocks von Willebrand factor-dependent platelet function in patients with thrombotic thrombocytopenic purpura ex vivo. Transfusion 2010; 50:1079-87. [PMID: 20070617 DOI: 10.1111/j.1537-2995.2009.02554.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND In thrombotic thrombocytopenic purpura (TTP), ultralarge von Willebrand factor (VWF) multimers bind platelet (PLT) glycoprotein Ib and lead to the formation of disseminated fibrin-poor, VWF-rich PLT thrombi. The aptamer ARC1779 blocks binding of the VWF A1 domain to PLT glycoprotein Ib. We evaluated whether ARC1779 inhibits the excessive VWF activity and VWF-mediated PLT function in patients with TTP. STUDY DESIGN AND METHODS We studied the ex vivo concentration response curves for ARC1779 on PLT function analyzer (PFA-100, Dade Behring) and cone-and-plate analyzer (CPA, Impact-R) PLT function tests, agonist-induced PLT aggregation, and VWF activity of TTP patients (n = 11, three in acute phase and eight in remission) and healthy controls (n = 44). RESULTS VWF activity and VWF-dependent PLT plug formation were increased in TTP patients relative to healthy controls, but agonist-induced PLT aggregation was not. ARC1779 blocked collagen/adenosine 5'-diphosphate (ADP)-induced PLT plug formation as measured by PFA-100 with an inhibitory concentration (IC)(100) of approximately 1 microg/mL in citrate-anticoagulated samples and approximately 3 to 4 microg/mL in hirudin-anticoagulated samples. A similar concentration of ARC1779 was necessary to block shear-dependent PLT adhesion in both TTP patients and healthy controls using the CPA assay (IC(100) of approx. 1 microg/mL for both). ARC1779 blocked VWF activity with an IC(90) of approximately 3 to 4 microg/mL in all subjects, but did not inhibit PLT aggregation by ADP, collagen, or arachidonic acid even at concentrations much greater than those that fully inhibited VWF-dependent PLT function. CONCLUSIONS ARC1779 potently and specifically inhibits VWF activity and VWF-dependent PLT function. ARC1779 may be a promising novel therapeutic for the treatment of TTP.
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Affiliation(s)
- Florian B Mayr
- Department of Clinical Pharmacology, Medical University of Vienna, Vienna, Austria
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Reiter RA, Varadi K, Turecek PL, Jilma B, Knöbl P. Changes in ADAMTS13 (von-Willebrand-factor-cleaving protease) activity after induced release of von Willebrand factor during acute systemic inflammation. Thromb Haemost 2009; 93:554-8. [PMID: 15735809 DOI: 10.1160/th04-08-0467] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Von Willebrand factor (VWF) is synthesized in endothelial cells, stored in the form of high molecular weight multimers and released after stimulation. After release, the multimers are cleaved by ADAMTS13 (von-Willebrand-factor-cleaving protease). We studied healthy volunteers in a double-blind, placebo controlled inflammation model. Ten male volunteers received 2 ng/kg endotoxin intravenously, and 5 volunteers placebo. Endotoxin infusion induced systemic inflammation and coagulation activation. After 4 hours the observed increase in neutrophils reached a maximum (273+/-34% of baseline; mean+/-SEM) and the platelet count dropped (81+/-2%). These parameters returned to baseline values after 24 hours. VWF antigen increased to 259+/-16% of baseline after 4 hours, remained elevated (192+/-15%) after 24 hours and returned to baseline after 7 days. Unusually large VWF multimers occurred in the plasma 4 hours after endotoxin infusion. ADAMTS13 activity (measured with a collagen-binding assay) decreased to 64+/-5% of baseline (P<0.001) after 4 hours, was still reduced after 24 hours (86+/- %; P=0.008) and returned to normal after 7 days. VWF multimer analysis showed pronounced satellite bands in the 4-hour samples, indicating cleavage of VWF by ADAMTS13. No apparent changes of the analyzed parameters were observed in the placebo group. The reciprocal course of ADAMTS13 and VWF after short-term VWF release induced by systemic inflammation is similar to that observed after induction of VWF release by desmopressin.
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Affiliation(s)
- Rosemarie A Reiter
- Department of Clinical Pharmacology, Medical University of Vienna, Austria
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Knöbl P, Jilma B, Gilbert JC, Hutabarat RM, Wagner PG, Jilma-Stohlawetz P. Anti-von Willebrand factor aptamer ARC1779 for refractory thrombotic thrombocytopenic purpura. Transfusion 2009; 49:2181-5. [PMID: 19538431 DOI: 10.1111/j.1537-2995.2009.02232.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Plasma exchange is the main therapy for thrombotic thrombocytopenic purpura (TTP). No treatments other than plasma exchange have been documented to be effective nor are approved for treatment of TTP. The anti-von Willebrand factor (VWF) aptamer ARC1779 effectively inhibits VWF activity in plasma samples of TTP patients and thus shear-dependent platelet (PLT) function as measured by the PLT function analyzer PFA-100 (Dade Behring). It was hypothesized that ARC1779 would offer a potentially effective treatment option for a critically ill patient, refractory to standard care. CASE REPORT A 39-year-old male patient with idiopathic TTP, refractory to daily plasma exchange, rituximab, steroids, and splenectomy, was additionally treated with a continuous infusion of the anti-von Willebrand factor (VWF) aptamer ARC1779 for 3 weeks. RESULTS Plasma concentrations of approximately 10 microg/mL ARC1779 decreased VWF activity by more than 96%. Plasma exchange treatment acutely decreased the plasma concentrations of ARC1779 by a mean of 47% (range, 40%-61%). Thus, additional minibolus infusions of ARC1779 were given after each plasma exchange to rapidly restore steady-state concentrations. ARC1779 resulted in an increase of PLT counts as long as ARC1779 was given. On three occasions the infusion was stopped, each accompanied by a decrease in PLT counts and worsening of microangiopathy. No serious adverse effects were observed during the treatment with ARC1779. CONCLUSION ARC1779 caused a clear and reproducible increase in PLT counts in an otherwise refractory TTP case. These clinical, pharmacokinetic, and pharmacodynamic data provide a rational basis for clinical trials with ARC1779 in TTP.
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Affiliation(s)
- Paul Knöbl
- Department of Internal Medicine I, Division of Hematology and Hemostasis, Medical University of Vienna, Vienna, Austria
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49
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Tiede A, Huth-Kühne A, Oldenburg J, Großmann R, Geisen U, Krause M, Brand B, Alberio L, Klamroth R, Spannagl M, Knöbl P. Immunosuppressive treatment for acquired haemophilia: current practice and future directions in Germany, Austria and Switzerland. Ann Hematol 2008; 88:365-70. [DOI: 10.1007/s00277-008-0665-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2008] [Accepted: 12/04/2008] [Indexed: 11/25/2022]
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50
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Assadian A, Knöbl P, Hübl W, Senekowitsch C, Klingler A, Pfaffelmeyer N, Hagmüller GW. Safety and efficacy of intravenous enoxaparin for carotid endarterectomy: A prospective randomized pilot trial. J Vasc Surg 2008; 47:537-42. [DOI: 10.1016/j.jvs.2007.10.055] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2007] [Revised: 10/19/2007] [Accepted: 10/27/2007] [Indexed: 11/25/2022]
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