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Santoro C, Fuh B, Le PQ, Maes P, Berrueco R, Mingot-Castellano EM, von Mackensen S, Tueckmantel C, Cabre-Marquez JF, Wang M. Efficacy and safety in patients with haemophilia A switching to octocog alfa (BAY 81-8973): Final results of the global real-world study, TAURUS. Eur J Haematol 2023; 110:77-87. [PMID: 36192847 PMCID: PMC10092432 DOI: 10.1111/ejh.13876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 06/14/2022] [Revised: 09/28/2022] [Accepted: 09/30/2022] [Indexed: 04/14/2023]
Abstract
OBJECTIVES To report the final results of the 2-year TAURUS study, assessing weekly prophylaxis dosing regimens of octocog alfa (Kovaltry®/BAY 81-8973) used in standard clinical practice in patients with moderate-to-severe haemophilia A. METHODS TAURUS (NCT02830477) is a phase 4, multinational, prospective, non-interventional, single-arm study in patients of any age with moderate or severe haemophilia A (≤5% factor [F]VIII activity). TAURUS was designed to primarily investigate weekly prophylaxis dosing regimens used in standard clinical practice. Annualised bleeding rates (ABRs), treatment satisfaction and adherence, and safety were also assessed. RESULTS Of 302 patients included in the full analysis set, 84.4% (n = 255) maintained their octocog alfa prophylaxis baseline regimen throughout the study, with a majority of patients (76.5%, n = 231) on two times or three times weekly regimens at the end of the observation period (≥1-≤2 years). ABRs, treatment satisfaction, and adherence remained stable during the observation period. Octocog alfa was well tolerated and there were no new or unexpected adverse events. CONCLUSIONS These data show that a smooth transition is observed when switching to octocog alfa from a previous FVIII treatment, with no safety issues and stable bleeding rates in a real-world setting of patients with moderate-to-severe haemophilia A.
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Affiliation(s)
- Cristina Santoro
- Hematology, University Hospital, Policlinico Umberto I, Rome, Italy
| | - Beng Fuh
- East Carolina University, Greenville, North Carolina, USA
| | - Phu Quoc Le
- Queen Fabiola Children's University Hospital, Brussels, Belgium
| | - Philip Maes
- University Hospital of Antwerp, Edegem, Belgium
| | - Rubén Berrueco
- Hospital Sant Joan de Déu, Barcelona University, Barcelona, Spain
| | | | - Sylvia von Mackensen
- Department of Medical Psychology, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
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Santoro C, Fuh B, Le PQ, Maes P, Berrueco R, Mingot-Castellano EM, von Mackensen S, Solms A, Wang M. BAY 81-8973 prophylaxis and pharmacokinetics in haemophilia A: Interim results from the TAURUS study. Eur J Haematol 2020; 105:164-172. [PMID: 32259334 PMCID: PMC7497079 DOI: 10.1111/ejh.13420] [Citation(s) in RCA: 2] [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: 11/12/2019] [Revised: 03/26/2020] [Accepted: 03/27/2020] [Indexed: 12/26/2022]
Abstract
OBJECTIVES To report interim data from TAURUS, a study assessing real-world prophylactic treatment with unmodified, full-length recombinant FVIII BAY 81-8973 (Kovaltry® ; Bayer) indicated for haemophilia A. METHODS TAURUS (NCT02830477) is an international, open-label, prospective, non-interventional, single-arm study with a one-year observation period (target N = 350). Patients have moderate or severe haemophilia A (FVIII ≤5% or ≤1%) and ≥50 exposure days to any FVIII product. Clinician- and patient-reported outcomes are captured on previous product use, changes in prophylaxis dose and dosing frequency, FVIII consumption, reported bleeding rates, treatment satisfaction and adherence, pharmacokinetic (PK) data (if available) and safety data. RESULTS At cut-off, baseline data were available from 160 patients (89 had ≥6 months of follow-up data). Most patients had severe haemophilia A (85%), infused BAY 81-8973 ≥ 3×/wk (59%) and experienced a median number of total bleeds of 2.0 (non-annualised; 246 days median documentation period). Good levels of treatment satisfaction (Hemo-SATA,P ) and adherence (VERITAS-Pro) were maintained. TAURUS demonstrated a favourable PK profile of BAY 81-8973 in comparison with other standard half-life rFVIIIs and supported the WAPPS PopPK model. No patients developed inhibitors. CONCLUSIONS TAURUS data demonstrate effective prophylaxis with BAY 81-8973 in the real world without compromising patient satisfaction or adherence.
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Affiliation(s)
- Cristina Santoro
- Hematology, Department of Translational and Precision Medicine, Policlinico Umberto I, Sapienza University, Rome, Italy
| | - Beng Fuh
- East Carolina University, Greenville, NC, USA
| | - Phu Quoc Le
- Queen Fabiola Children's University Hospital, Brussels, Belgium
| | - Philip Maes
- University Hospital of Antwerp, Edegem, Belgium
| | - Rubén Berrueco
- Hospital Sant Joan de Déu, Barcelona University, Barcelona, Spain
| | | | - Sylvia von Mackensen
- Department of Medical Psychology, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
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El Kenz H, Efira A, Le PQ, Thiry C, Valsamis J, Azerad MA, Corazza F. Transfusion support of autoimmune hemolytic anemia: how could the blood group genotyping help? Transl Res 2014; 163:36-42. [PMID: 24120494 DOI: 10.1016/j.trsl.2013.09.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2013] [Revised: 09/16/2013] [Accepted: 09/17/2013] [Indexed: 11/25/2022]
Abstract
Conventional pretransfusion testing based on hemagglutination assays can be challenging for patients with autoimmune hemolytic anemia (AIHA) because of the presence of auto-antibodies. It has been suggested that deoxyribonucleic acid-based methods could be more efficient in the selection of antigen-matched red blood cell units in those settings. Because of the high risk of alloimmunization of these patients and the labor-intensive nature of adsorption techniques, we decided to evaluate the feasibility of selecting antigen-matched units on the basis of RBC genotyping. We included in our routine RBC genotyping program samples from 7 patients with AIHA presenting a strongly positive direct antiglobulin test. This made the routine compatibility tests difficult. Most patients had previously received transfusions because of warm AIHA. Matched donor units were selected according to the genotype. For all but 1 patient, blood group genotyping could be done on time to allow antigen-matched transfusion. Four patients received antigen-matched red blood cell units based on RBC genotyping and for 1 patient the fact that no matched units were available led us to postpone the transfusion. After each transfusion, the recovery was recorded and considered satisfactory for all transfused patients.
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Affiliation(s)
- Hanane El Kenz
- Department of Transfusion, Hospital Blood Bank, CHU-Brugmann and Queen Fabiola Children University Hospital, Brussels, Belgium.
| | - André Efira
- Department of Hematology, CHU-Brugmann, Brussels, Belgium
| | - Phu Quoc Le
- Department of Hematology, Queen Fabiola University Children Hospital, Brussels, Belgium
| | - Claire Thiry
- Department of Transfusion, Hospital Blood Bank, CHU-Brugmann and Queen Fabiola Children University Hospital, Brussels, Belgium
| | - Joseph Valsamis
- Laboratory of Clinical Biology, CHU-Brugmann, Brussels, Belgium
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van Zelm MC, Smet J, van der Burg M, Ferster A, Le PQ, Schandené L, van Dongen JJM, Mascart F. Antibody deficiency due to a missense mutation in CD19 demonstrates the importance of the conserved tryptophan 41 in immunoglobulin superfamily domain formation. Hum Mol Genet 2011; 20:1854-63. [PMID: 21330302 DOI: 10.1093/hmg/ddr068] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Immunoglobulin superfamily (IgSF) domains are conserved structures present in many proteins in eukaryotes and prokaryotes. These domains are well-capable of facilitating sequence variation, which is most clearly illustrated by the variable regions in immunoglobulins (Igs) and T cell receptors (TRs). We studied an antibody-deficient patient suffering from recurrent respiratory infections and with impaired antibody responses to vaccinations. Patient's B cells showed impaired Ca(2+) influx upon stimulation with anti-IgM and lacked detectable CD19 membrane expression. CD19 sequence analysis revealed a homozygous missense mutation resulting in a tryptophan to cystein (W52C) amino acid change. The affected tryptophan is CONSERVED-TRP 41 located on the C-strand of the first extracellular IgSF domain of CD19 and was found to be highly conserved, not only in mammalian CD19 proteins, but in nearly all characterized IgSF domains. Furthermore, the tryptophan is present in all variable domains in Ig and TR and was not mutated in 117 Ig class-switched transcripts of B cells from controls, despite an overall 10% amino acid change frequency. In vitro complementation studies and CD19 western blotting of patient's B cells demonstrated that the mutated protein remained immaturely glycosylated. This first missense mutation resulting in a CD19 deficiency demonstrates the crucial role of a highly conserved tryptophan in proper folding or stability of IgSF domains.
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Affiliation(s)
- Menno C van Zelm
- Department of Immunology, Erasmus MC, University Medical Center, Rotterdam, NL-3015 GE, The Netherlands.
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Gulbis B, Cotton F, Ferster A, Ketelslegers O, Dresse MF, Ronge-Collard E, Minon JM, Le PQ, Vertongen F. Neonatal haemoglobinopathy screening in Belgium. J Clin Pathol 2008; 62:49-52. [DOI: 10.1136/jcp.2008.060517] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Gulbis B, Haberman D, Dufour D, Christophe C, Vermylen C, Kagambega F, Corazza F, Devalck C, Dresse MF, Hunninck K, Klein A, Le PQ, Loop M, Maes P, Philippet P, Sariban E, Van Geet C, Ferster A. Hydroxyurea for sickle cell disease in children and for prevention of cerebrovascular events: the Belgian experience. Blood 2005; 105:2685-90. [PMID: 15604217 DOI: 10.1182/blood-2004-07-2704] [Citation(s) in RCA: 114] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Hydroxyurea (HU) is considered to be the most successful drug therapy for severe sickle cell disease (SCD). Nevertheless, questions remain regarding its benefits in very young children and its role in the prevention of cerebrovascular events. There were 127 SCD patients treated with no attempt to reach maximal tolerated doses who entered the Belgian Registry: 109 for standard criteria and 18 who were at risk of stroke only. During 426 patient-years of follow-up for patients with standard criteria, 3.3 acute chest syndromes, 1.3 cerebrovascular events, and 1.1 osteonecrosis per 100 patient-years were observed. A subgroup of 32 patients followed for 6 years experienced significant benefit over this period. In each subgroup of children (younger than 2 years, 2-5, 6-9, and 10-19 years) followed for 2 years, clinical and biologic changes were similar, except for children younger than 2 years who had no total hemoglobin increase and remained at risk of severe anemia. In 72 patients evaluated by transcranial Doppler studies (TCD), 34 patients were at risk of primary stroke and only 1 had a cerebrovascular event after a follow-up of 96 patient-years. These results confirm the benefit of HU, even in very young children, and its possible role in primary stroke prevention.
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Affiliation(s)
- Béatrice Gulbis
- Department of Hematology/Oncology, Hôpital Universitaire des Enfants, Av. J. J. Crocq, 15, B-1020 Brussels, Belgium
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Brachet C, Azzi N, Demulder A, Devalck C, Gourdin A, Gulbis B, Klein A, Le PQ, Loop M, Sariban E, Ferster A. Hydroxyurea treatment for sickle cell disease: impact on haematopoietic stem cell transplantation's outcome. Bone Marrow Transplant 2004; 33:799-803. [PMID: 14767501 DOI: 10.1038/sj.bmt.1704443] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [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: 11/08/2022]
Abstract
Since 1988, 24 children have undergone haematopoietic stem cell transplantation (HSCT) for severe sickle cell disease (SCD) in our unit, 13 being grafted after having been exposed to hydroxyurea (HU) to control SCD-related complications. Different pre-transplant conditioning regimens were given over time: Bu14/Cy200 in six patients (group 1), Bu16/Cy200/antithymocyte globulin (ATG) in five (group 2) and Bu16/Cy200/ATG with HU prior to HSCT in 13 (group 3). The aim of this study is to compare the outcome after HSCT of these groups of patients, which differ according to pre-transplant drug exposure. Overall, 20 of the 24 transplanted children had stable engraftment and have remained free of SCD-related symptoms after HSCT; 19 of them are currently alive and cured of SCD. In group 1 (HU-, ATG-), we observed one unexplainable late death, one absent engraftment, one late rejection and one mixed stable chimerism. In group 2 (HU-, ATG+), we observed the absence of engraftment in two patients and one early rejection. In group 3 (HU+, ATG+), we observed no cases of either absent engraftment, mixed stable chimerism or late rejection. In our experience, pre-transplant treatment with HU seems to be associated with a lower incidence of rejection/absent engraftment in severe SCD patients. These results need to be confirmed with a larger number of patients.
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Affiliation(s)
- C Brachet
- 1Haemato-Oncology Unit, Hôpital Universitaire des Enfants-ULB, Brussels, Belgium
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