1
|
Romano L, Schütte L, van Hest R, Meijer K, Laros-van Gorkom B, Nieuwenhuizen L, Eikenboom J, Heubel-Moenen F, Uitslager N, Coppens M, Fijnvandraat K, Driessens M, Polinder S, Cnossen M, Leebeek F, Mathôt R, Kruip M. Tachyphylaxis and reproducibility of desmopressin response in perioperative persons with nonsevere hemophilia A: implications for clinical practice. Res Pract Thromb Haemost 2024; 8:102367. [PMID: 38660455 PMCID: PMC11039391 DOI: 10.1016/j.rpth.2024.102367] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 08/22/2023] [Revised: 01/25/2024] [Accepted: 02/11/2024] [Indexed: 04/26/2024] Open
Abstract
Background Desmopressin is frequently used perioperatively in persons with nonsevere hemophilia A. However, increase in factor (F)VIII:C after desmopressin use is interindividually highly variable. Tachyphylaxis has only been reported in test setting for persons with hemophilia A, with a remaining response of approximately 70% after a second dose compared with that after a first dose. Objectives To study tachyphylaxis of FVIII:C response after multiple administration(s) of desmopressin in perioperative persons with nonsevere hemophilia A. Methods We studied FVIII:C levels after desmopressin before (day 0 [D0]) and on days 1 (D1) and 2 (D2) after surgery in 26 patients of the DAVID and Little DAVID studies. We studied tachyphylaxis by comparing the responses at D1 and D2 with that at D0. We also assessed the reproducibility of the D0 response in comparison to an earlier performed desmopressin test. Results The median absolute FVIII:C increase was 0.50 IU/mL (0.35-0.74; n = 23) at D0, 0.21 IU/mL (0.14-0.28; n = 17) at D1, and 0.23 IU/mL (0.16-0.30; n = 11) at D2. The median percentage of FVIII increase after the second administration (D1) compared with the first (D0) was 42.9% (29.2%-52.5%; n = 17) and that of the third (D2) compared with the first (D0) was 36.4% (23.7%-46.9%; n = 11). The FVIII:C desmopressin response at D0 was comparable with the desmopressin test response in 74% of the patients. Conclusion Tachyphylaxis in the surgical setting was considerably more pronounced than previously reported, with FVIII:C at D1 and D2 of 36% to 43% of the initial response. Our results may have important implications for monitoring repeated desmopressin treatment when used perioperatively.
Collapse
Affiliation(s)
- L.G.R. Romano
- Department of Hematology, Erasmus MC, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - L.M. Schütte
- Department of Hematology, Erasmus MC, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - R.M. van Hest
- Department of Hospital Pharmacy and Clinical Pharmacology, Amsterdam University Medical Centers - University of Amsterdam, Amsterdam, The Netherlands
| | - K. Meijer
- Department of Hematology, University Medical Center Groningen, Groningen, The Netherlands
| | | | - L. Nieuwenhuizen
- Department of Hematology, Máxima Medical Center, Veldhoven, The Netherlands
| | - J. Eikenboom
- Department of Internal Medicine, Division of Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, The Netherlands
| | - F.C.J.I. Heubel-Moenen
- Department of Hematology, Maastricht University Medical Center+, Maastricht, The Netherlands
| | - N. Uitslager
- Van Creveldkliniek, University Medical Center Utrecht, Utrecht, The Netherlands
| | - M. Coppens
- Department of Hematology, Amsterdam University Medical Centers - University of Amsterdam, Amsterdam, The Netherlands
- Pulmonary Hypertension & Thrombosis, Amsterdam Cardiovascular Sciences, Amsterdam, The Netherlands
| | - K. Fijnvandraat
- Department of Paediatric Hematology, Amsterdam University Medical Centers - University of Amsterdam, Emma Children's Hospital, Amsterdam, The Netherlands
- Department of Plasma Proteins, Sanquin Research, Amsterdam, The Netherlands
| | - M.H.E. Driessens
- Netherlands Hemophilia Patient Society, Nijkerk, The Netherlands
| | - S. Polinder
- Department of Public Health, Erasmus MC, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - M.H. Cnossen
- Department of Pediatric Hematology, Erasmus MC - Sophia Children's Hospital, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - F.W.G. Leebeek
- Department of Hematology, Erasmus MC, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - R.A.A. Mathôt
- Department of Hospital Pharmacy and Clinical Pharmacology, Amsterdam University Medical Centers - University of Amsterdam, Amsterdam, The Netherlands
| | - M.J.H.A. Kruip
- Department of Hematology, Erasmus MC, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - DAVID and SYMPHONY Consortium
- Department of Hematology, Erasmus MC, Erasmus University Medical Center, Rotterdam, The Netherlands
- Department of Hospital Pharmacy and Clinical Pharmacology, Amsterdam University Medical Centers - University of Amsterdam, Amsterdam, The Netherlands
- Department of Hematology, University Medical Center Groningen, Groningen, The Netherlands
- Department of Hematology, Radboud University Medical Center, Nijmegen, The Netherlands
- Department of Hematology, Máxima Medical Center, Veldhoven, The Netherlands
- Department of Internal Medicine, Division of Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, The Netherlands
- Department of Hematology, Maastricht University Medical Center+, Maastricht, The Netherlands
- Van Creveldkliniek, University Medical Center Utrecht, Utrecht, The Netherlands
- Department of Hematology, Amsterdam University Medical Centers - University of Amsterdam, Amsterdam, The Netherlands
- Pulmonary Hypertension & Thrombosis, Amsterdam Cardiovascular Sciences, Amsterdam, The Netherlands
- Department of Paediatric Hematology, Amsterdam University Medical Centers - University of Amsterdam, Emma Children's Hospital, Amsterdam, The Netherlands
- Department of Plasma Proteins, Sanquin Research, Amsterdam, The Netherlands
- Netherlands Hemophilia Patient Society, Nijkerk, The Netherlands
- Department of Public Health, Erasmus MC, Erasmus University Medical Center, Rotterdam, The Netherlands
- Department of Pediatric Hematology, Erasmus MC - Sophia Children's Hospital, Erasmus University Medical Center, Rotterdam, The Netherlands
| |
Collapse
|
2
|
Vrijburg M, Sari S, Koot BGP, Fijnvandraat K, Klaassen I. A high rate of post thrombotic complication in pediatric portal vein thrombosis. Thromb Res 2023; 231:44-49. [PMID: 37801774 DOI: 10.1016/j.thromres.2023.09.015] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 09/26/2023] [Accepted: 09/28/2023] [Indexed: 10/08/2023]
Abstract
INTRODUCTION Portal vein thrombosis (PVT) is a rare disease in children and may be complicated by portal hypertension (PH), hepatopulmonary syndrome (HPS) and portopulmonary hypertension (PPHTN) but their incidence and risk factors are unknown. METHODS An observational, retrospective cohort study of all consecutive children (≤18 years) with PVT treated at the Emma Children's Hospital Amsterdam University Medical Centers between January 1996 and January 2022 was conducted to identify the incidence and risk factors of these post thrombotic complications (PTC) in pediatric patients. RESULTS In total 43/ 703 thrombosis patients had PVT (boys 72.1 %; mean age 1.3 ± 0.5 years). Overall, 51 % of patients developed PH (n = 22), complicated by PPHTN in one of them. In 16 of 22 patients, PVT presented with portal hypertension. Clinically relevant bleeding due to portal hypertension occurred in 13 (59.1 %) patients with PH. The mean age at the first clinically relevant bleeding was 5.1 ± 5.9 years. Risk factors for the development of PH were lack of complete thrombus resolution (OR 24.3, 95 % CI 1.2-7.0; p = 0.008) and unprovoked VTE (OR, 35.4; 95 % CI 1.4-6.3; p = 0.012). Median time from PVT to PH was 137 days (range: 0 days to 5.04 years). CONCLUSION We demonstrated that half of the patients develop PH after PVT, with a lack of thrombus resolution and unprovoked VTE as independent risk factors. This high incidence underlines the importance of long-term standardized follow-up of patients after PVT and standard screening in patients at risk of PTC.
Collapse
Affiliation(s)
- M Vrijburg
- Department of Pediatric Hematology, Emma Children's Hospital, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, the Netherlands
| | - S Sari
- Department of Pediatric Hematology, Emma Children's Hospital, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, the Netherlands
| | - B G P Koot
- Department of Pediatric Gastroenterology, Emma Children's Hospital, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, the Netherlands
| | - K Fijnvandraat
- Department of Pediatric Hematology, Emma Children's Hospital, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, the Netherlands
| | - Ilm Klaassen
- Department of Pediatric Hematology, Emma Children's Hospital, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, the Netherlands.
| |
Collapse
|
3
|
Swinkels M, Atiq F, Bürgisser PE, Moort I, Meijer K, Eikenboom J, Fijnvandraat K, Galen KPM, Meris J, Schols SEM, Bom JG, Cnossen MH, Voorberg J, Leebeek FWG, Bierings R, Jansen AJG, Fijnvandraat K, Coppens M, Meris J, Nieuwenhuizen L, Meijer K, Tamminga RYJ, Ypma PF, Eikenboom HCJ, Bom JG, Smiers FJW, Granzen B, Moenen F, Brons P, Schols SEM, Leebeek FWG, Cnossen MH, Atiq F, Kwawegen CB, Galen KPM. Platelet degranulation and bleeding phenotype in a large cohort of Von Willebrand disease patients. Br J Haematol 2022; 197:497-501. [PMID: 36165954 PMCID: PMC9314899 DOI: 10.1111/bjh.18145] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 02/24/2022] [Accepted: 03/02/2022] [Indexed: 11/30/2022]
Abstract
Von Willebrand disease (VWD) is a bleeding disorder caused by quantitative (type 1 or 3) or qualitative (type 2A/2B/2M/2N) defects of circulating von Willebrand factor (VWF). Circulating VWF levels not always fully explain bleeding phenotypes, suggesting a role for alternative factors, like platelets. Here, we investigated platelet factor 4 (PF4) in a large cohort of patients with VWD. PF4 levels were lower in type 2B and current bleeding phenotype was significantly associated with higher PF4 levels, particularly in type 1 VWD. Based on our findings we speculate that platelet degranulation and cargo release may play a role across VWD subtypes.
Collapse
Affiliation(s)
- Maurice Swinkels
- Department of Hematology Erasmus University Medical Center Rotterdam The Netherlands
| | - Ferdows Atiq
- Department of Hematology Erasmus University Medical Center Rotterdam The Netherlands
| | - Petra E. Bürgisser
- Department of Hematology Erasmus University Medical Center Rotterdam The Netherlands
| | - Iris Moort
- Department of Hematology Erasmus University Medical Center Rotterdam The Netherlands
| | - Karina Meijer
- Department of Hematology, University Medical Center Groningen University of Groningen Groningen The Netherlands
| | - Jeroen Eikenboom
- Department of Internal Medicine, Division of Thrombosis and Hemostasis Leiden University Medical Center Leiden The Netherlands
- Einthoven Laboratory for Vascular and Regenerative Medicine Leiden University Medical Center Leiden The Netherlands
| | - Karin Fijnvandraat
- Department of Pediatric Hematology Emma Children's Hospital‐Academic Medical Centre Amsterdam The Netherlands
| | - Karin P. M. Galen
- Van Creveldkliniek, University Medical Center Utrecht Utrecht University Utrecht The Netherlands
| | - Joke Meris
- Netherlands Hemophilia Society Leiden The Netherlands
| | - Saskia E. M. Schols
- Department of Hematology Radboud University Medical Center and Hemophilia Treatment Center Nijmegen‐Eindhoven‐Maastricht Nijmegen The Netherlands
| | - Johanna G. Bom
- Department of Clinical Epidemiology Leiden University Medical Center Leiden The Netherlands
| | - Marjon H. Cnossen
- Department of Pediatric Hematology Erasmus University Medical Center‐Sophia Children's Hospital Rotterdam The Netherlands
| | - Jan Voorberg
- Department of Molecular Hematology, Sanquin Research and Landsteiner Laboratory, Amsterdam University Medical Center University of Amsterdam Amsterdam The Netherlands
- Department of Experimental Vascular Medicine, Amsterdam University Medical Center University of Amsterdam Amsterdam The Netherlands
| | - Frank W. G. Leebeek
- Department of Hematology Erasmus University Medical Center Rotterdam The Netherlands
| | - Ruben Bierings
- Department of Hematology Erasmus University Medical Center Rotterdam The Netherlands
| | - A. J. Gerard Jansen
- Department of Hematology Erasmus University Medical Center Rotterdam The Netherlands
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
4
|
Heesterbeek MR, Luijten MAJ, Gouw SC, Limperg PF, Fijnvandraat K, Coppens M, Kruip MJHA, Eikenboom J, Grootenhuis MA, Flens G, Terwee CB, Peters M, Haverman L. Measuring anxiety and depression in young adult men with haemophilia using PROMIS. Haemophilia 2022; 28:e79-e82. [PMID: 35305286 DOI: 10.1111/hae.14534] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 02/23/2022] [Accepted: 02/23/2022] [Indexed: 11/30/2022]
Affiliation(s)
- M R Heesterbeek
- Emma Children's Hospital, Amsterdam UMC, University of Amsterdam, Child and Adolescent Psychiatry and Psychosocial Care, Amsterdam Reproduction and Development, Amsterdam Public Health, Amsterdam, The Netherlands
| | - M A J Luijten
- Emma Children's Hospital, Amsterdam UMC, University of Amsterdam, Child and Adolescent Psychiatry and Psychosocial Care, Amsterdam Reproduction and Development, Amsterdam Public Health, Amsterdam, The Netherlands.,Amsterdam UMC, Epidemiology and Data Science, Vrije Universiteit, Amsterdam, The Netherlands
| | - S C Gouw
- Emma Children's Hospital, Amsterdam UMC, Paediatric Haematology, University of Amsterdam, Amsterdam, The Netherlands.,Department of Clinical Epidemiology, Leiden University Medical Centre, Leiden, The Netherlands
| | - P F Limperg
- Emma Children's Hospital, Amsterdam UMC, University of Amsterdam, Child and Adolescent Psychiatry and Psychosocial Care, Amsterdam Reproduction and Development, Amsterdam Public Health, Amsterdam, The Netherlands
| | - K Fijnvandraat
- Emma Children's Hospital, Amsterdam UMC, Paediatric Haematology, University of Amsterdam, Amsterdam, The Netherlands
| | - M Coppens
- Department of Vascular Medicine, Amsterdam Cardiovascular Sciences, Amsterdam University Medical Centres, University of Amsterdam, Amsterdam, the Netherlands
| | - M J H A Kruip
- Erasmus MC, Department of Haematology Rotterdam, Erasmus University Medical Centre, The Netherlands
| | - J Eikenboom
- Department of Internal Medicine, Division of Thrombosis and Haemostasis, Leiden University Medical Centre, Leiden, The Netherlands
| | - M A Grootenhuis
- Princess Máxima Centre for Paediatric Oncology, Utrecht, The Netherlands
| | - G Flens
- Alliance for Quality in Mental Health Care, Utrecht, The Netherlands
| | - C B Terwee
- Emma Children's Hospital, Amsterdam UMC, Paediatric Haematology, University of Amsterdam, Amsterdam, The Netherlands
| | - M Peters
- Amsterdam UMC, Epidemiology and Data Science, Vrije Universiteit, Amsterdam, The Netherlands
| | - L Haverman
- Emma Children's Hospital, Amsterdam UMC, University of Amsterdam, Child and Adolescent Psychiatry and Psychosocial Care, Amsterdam Reproduction and Development, Amsterdam Public Health, Amsterdam, The Netherlands
| |
Collapse
|
5
|
Preijers T, van Spengler MWF, Meijer K, Fijnvandraat K, Fischer K, Leebeek FWG, Cnossen MH, Mathôt RAA. In silico evaluation of limited sampling strategies for individualized dosing of extended half-life factor IX concentrates in hemophilia B patients. Eur J Clin Pharmacol 2021; 78:237-249. [PMID: 34651201 PMCID: PMC8748341 DOI: 10.1007/s00228-021-03173-2] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Accepted: 06/10/2021] [Indexed: 11/03/2022]
Abstract
PURPOSE Hemophilia B is a bleeding disorder, caused by a factor IX (FIX) deficiency. Recently, FIX concentrates with extended half-life (EHL) have become available. Prophylactic dosing of EHL-FIX concentrates can be optimized by assessment of individual pharmacokinetic (PK) parameters. To determine these parameters, limited sampling strategies (LSSs) may be applied. The study aims to establish adequate LSSs for estimating individual PK parameters of EHL-FIX concentrates using in silico evaluation. METHODS Monte Carlo simulations were performed to obtain FIX activity versus time profiles using published population PK models for N9-GP (Refixia), rFIXFc (Alprolix), and rIX-FP (Idelvion). Fourteen LSSs, containing three or four samples taken within 8 days after administration, were formulated. Bayesian analysis was applied to obtain estimates for clearance (CL), half-life (t1/2), time to 1% (Time1%), and calculated weekly dose (Dose1%). Bias and precision of these estimates were assessed to determine which LSS was adequate. RESULTS For all PK parameters of N9-GP, rFIXFc and rIX-FP bias was generally acceptable (range: -5% to 5%). For N9-GP, precision of all parameters for all LSSs was acceptable (< 25%). For rFIXFc, precision was acceptable for CL and Time1%, except for t1/2 (range: 27.1% to 44.7%) and Dose1% (range: 12% to 29.4%). For rIX-FP, all LSSs showed acceptable bias and precision, except for Dose1% using LSS with the last sample taken on day 3 (LSS 6 and 10). CONCLUSION Best performing LSSs were LSS with samples taken at days 1, 5, 7, and 8 (N9-GP and rFIXFc) and at days 1, 4, 6, and 8 (rIX-FP), respectively.
Collapse
Affiliation(s)
- T Preijers
- Hospital Pharmacy-Clinical Pharmacology, Amsterdam University Medical Center, Amsterdam, The Netherlands
| | - M W F van Spengler
- Hospital Pharmacy-Clinical Pharmacology, Amsterdam University Medical Center, Amsterdam, The Netherlands
| | - K Meijer
- Department of Pediatric Hematology, Academic Medical Center Amsterdam, Amsterdam, The Netherlands
| | - K Fijnvandraat
- Department of Hematology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - K Fischer
- Van Creveldkliniek University Medical Center Utrecht, Utrecht, The Netherlands
| | - F W G Leebeek
- Department of Hematology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - M H Cnossen
- Department of Pediatric Hematology, Erasmus University Medical Center, Sophia Children's Hospital, Rotterdam, The Netherlands
| | - R A A Mathôt
- Hospital Pharmacy-Clinical Pharmacology, Amsterdam University Medical Center, Amsterdam, The Netherlands.
| |
Collapse
|
6
|
Atiq F, Saes J, Punt M, van Galen K, Schutgens R, Meijer K, Cnossen M, Laros-Van Gorkom B, Peters M, Nieuwenhuizen L, Kruip M, de Meris J, van der Bom J, van der Meer F, Fijnvandraat K, Kruis I, van Heerde W, Eikenboom H, Leebeek FW, Schols S. Major differences in clinical presentation, diagnosis and management of men and women with autosomal inherited bleeding disorders. EClinicalMedicine 2021; 32:100726. [PMID: 33554093 PMCID: PMC7848767 DOI: 10.1016/j.eclinm.2021.100726] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 12/23/2020] [Accepted: 01/08/2021] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND In recent years, more awareness is raised about sex-specific dilemmas in inherited bleeding disorders. However, no large studies have been performed to assess differences in diagnosis, bleeding phenotype and management of men and women with bleeding disorders. Therefore, we investigated sex differences in a large cohort of well-defined patients with autosomal inherited bleeding disorders (von Willebrand disease (VWD), rare bleeding disorders (RBDs) and congenital platelet defects (CPDs)). METHODS We included patients from three nationwide cross-sectional studies on VWD, RBDs and CPDs in the Netherlands, respectively the WiN, RBiN and TiN study. In all studies a bleeding score (BS) was obtained, and patients filled in an extensive questionnaire on the management and burden of their disorder. FINDINGS We included 1092 patients (834 VWD; 196 RBD; 62 CPD), of whom 665 (60.9%) were women. Women were more often referred because of a bleeding diathesis than men (47.9% vs 36.6%, p = 0.002). Age of first bleeding was similar between men and women, respectively 8.9 ± 13.6 (mean ±sd) years and 10.6 ± 11.3 years (p = 0.075). However, the diagnostic delay, which was defined as time from first bleeding to diagnosis, was longer in women (11.6 ± 16.4 years) than men (7.7 ± 16.6 years, p = 0.002). Similar results were found when patients referred for bleeding were analyzed separately. Of women aging 12 years or older, 469 (77.1%) had received treatment because of sex-specific bleeding. INTERPRETATION Women with autosomal inherited bleeding disorders are more often referred for bleeding, have a longer diagnostic delay, and often require treatment because of sex-specific bleeding. FUNDING The WiN study was supported (in part) by research funding from the Dutch Hemophilia Foundation (Stichting Haemophilia), Shire (Takeda), and CSL Behring (unrestricted grant).
Collapse
Affiliation(s)
- F. Atiq
- Department of Hematology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - J.L. Saes
- Hemophilia Treatment Center Nijmegen-Eindhoven-Maastricht, the Netherlands
- Department of Hematology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - M.C. Punt
- Benign Hematology Center, Van Creveldkliniek, University Medical Center Utrecht and University Utrecht, Utrecht, the Netherlands
| | - K.P.M. van Galen
- Benign Hematology Center, Van Creveldkliniek, University Medical Center Utrecht and University Utrecht, Utrecht, the Netherlands
| | - R.E.G. Schutgens
- Benign Hematology Center, Van Creveldkliniek, University Medical Center Utrecht and University Utrecht, Utrecht, the Netherlands
| | - K. Meijer
- Department of Hematology, University Medical Center Groningen, Groningen, the Netherlands
| | - M.H. Cnossen
- Department of Pediatric Hematology, Erasmus MC-Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - B.A.P. Laros-Van Gorkom
- Hemophilia Treatment Center Nijmegen-Eindhoven-Maastricht, the Netherlands
- Department of Hematology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - M. Peters
- Emma Children's Hospital, Amsterdam UMC, University of Amsterdam, Pediatric-Hematology, Amsterdam, the Netherlands
| | - L. Nieuwenhuizen
- Hemophilia Treatment Center Nijmegen-Eindhoven-Maastricht, the Netherlands
- Department of Hematology, Maxima Medical Center Eindhoven, Eindhoven, the Netherlands
| | - M.J.H.A. Kruip
- Department of Hematology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - J. de Meris
- Netherlands Hemophilia Society, Leiden, the Netherlands
| | - J.G. van der Bom
- Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, the Netherlands
- Jon J van Rood Center for Clinical Transfusion Medicine, Sanquin Research, Leiden, the Netherlands
| | - F.J.M. van der Meer
- Department of Internal Medicine, Division of Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, the Netherlands
| | - K. Fijnvandraat
- Emma Children's Hospital, Amsterdam UMC, University of Amsterdam, Pediatric-Hematology, Amsterdam, the Netherlands
- Department of Plasma Proteins, Sanquin Research, Amsterdam, the Netherlands
| | - I.C. Kruis
- Netherlands Hemophilia Society, Leiden, the Netherlands
| | - W.L. van Heerde
- Hemophilia Treatment Center Nijmegen-Eindhoven-Maastricht, the Netherlands
- Department of Hematology, Radboud University Medical Center, Nijmegen, the Netherlands
- Enzyre BV, Novio Tech Campus, Nijmegen, the Netherlands
| | - H.C.J. Eikenboom
- Department of Internal Medicine, Division of Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, the Netherlands
- Einthoven Laboratory for Vascular and Regenerative Medicine, Leiden University Medical Center, Leiden, the Netherlands
| | - Frank W.G. Leebeek
- Department of Hematology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - S.E.M. Schols
- Hemophilia Treatment Center Nijmegen-Eindhoven-Maastricht, the Netherlands
- Department of Hematology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - For the WiN, RBiN and TiN study groups
- Department of Hematology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
- Hemophilia Treatment Center Nijmegen-Eindhoven-Maastricht, the Netherlands
- Department of Hematology, Radboud University Medical Center, Nijmegen, the Netherlands
- Benign Hematology Center, Van Creveldkliniek, University Medical Center Utrecht and University Utrecht, Utrecht, the Netherlands
- Department of Hematology, University Medical Center Groningen, Groningen, the Netherlands
- Department of Pediatric Hematology, Erasmus MC-Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, the Netherlands
- Emma Children's Hospital, Amsterdam UMC, University of Amsterdam, Pediatric-Hematology, Amsterdam, the Netherlands
- Department of Hematology, Maxima Medical Center Eindhoven, Eindhoven, the Netherlands
- Netherlands Hemophilia Society, Leiden, the Netherlands
- Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, the Netherlands
- Jon J van Rood Center for Clinical Transfusion Medicine, Sanquin Research, Leiden, the Netherlands
- Department of Internal Medicine, Division of Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, the Netherlands
- Department of Plasma Proteins, Sanquin Research, Amsterdam, the Netherlands
- Enzyre BV, Novio Tech Campus, Nijmegen, the Netherlands
- Einthoven Laboratory for Vascular and Regenerative Medicine, Leiden University Medical Center, Leiden, the Netherlands
| |
Collapse
|
7
|
Gerritsma JJ, Oomen I, Meinderts S, van der Schoot CE, Biemond BJ, van der Bom JG, Fijnvandraat K. Back to base pairs: What is the genetic risk for red bloodcell alloimmunization? Blood Rev 2021; 48:100794. [PMID: 33451870 DOI: 10.1016/j.blre.2020.100794] [Citation(s) in RCA: 2] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 11/17/2020] [Accepted: 12/24/2020] [Indexed: 01/05/2023]
Abstract
Red blood cell (RBC) alloimmunization is a serious complication of blood transfusions, challenging selection of compatible units for future transfusions. Genetic characteristics may be associated with the risk of RBC alloimmunization and may therefore serve to identify high-risk patients. The aim of this systematic review was to summarize the available evidence on genetic risk factors for RBC alloimmunization. Electronic databases were searched up to April 2020 for studies (Search terms included transfusion, alloimmunization and genetic). A total of 2581 alloimmunized cases and 26,558 controls were derived from 24 studies. The alleles that were most frequently studied and that demonstrated significant associations in a meta-analysis with alloimmunization to the Duffya antigen were HLA-DRB1*04 (Odds Ratio 7.80 (95%CI 4.57-13.33)), HLA-DRB1*15 (OR 3.76 (95%CI 2.14-6.59)), and HLA-DRB1*03 (OR 0.12 (95%CI 0.05-0.29)). Furthermore, significant associations with anti-K formation was found for the alleles HLA-DRB1*10 (OR 2.64 (95%CI 1.41-4.95)), HLA*DRB1*11 (OR 2.11, (95%CI 1.34-3.32)), and HLA-DRB1*13 (OR 1.71 (95%CI 1.26-2.33)). Overall, the available evidence was of moderate to low quality, hampering interpretation of reported results. There is an urgent need for high quality evidence on genetic risk factors for RBC alloimmunization.
Collapse
Affiliation(s)
- J J Gerritsma
- Amsterdam UMC, University of Amsterdam, Emma Children's Hospital, Pediatric Hematology, Amsterdam, the Netherlands; Sanquin Research and Landsteiner Laboratory, Immunopathology, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands.
| | - I Oomen
- Amsterdam UMC, University of Amsterdam, Emma Children's Hospital, Pediatric Hematology, Amsterdam, the Netherlands.
| | - S Meinderts
- Sanquin Research and Landsteiner Laboratory, Blood Cell Research, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands
| | - C E van der Schoot
- Sanquin Research and Landsteiner Laboratory, Experimental Immunohematology, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands.
| | - B J Biemond
- Amsterdam UMC, University of Amsterdam, Department of Hematology, Amsterdam, the Netherlands.
| | - J G van der Bom
- Sanquin/LUMC, Center for Clinical Transfusion Research, Leiden, the Netherlands.
| | - K Fijnvandraat
- Amsterdam UMC, University of Amsterdam, Emma Children's Hospital, Pediatric Hematology, Amsterdam, the Netherlands; Leiden University Medical Center, Department of Clinical Epidemiology, Leiden, the Netherlands.
| | | |
Collapse
|
8
|
Abdi A, Bordbar MR, Hassan S, Rosendaal FR, van der Bom JG, Voorberg J, Fijnvandraat K, Gouw SC. Prevalence and Incidence of Non-neutralizing Antibodies in Congenital Hemophilia A- A Systematic Review and Meta-Analysis. Front Immunol 2020; 11:563. [PMID: 32457734 PMCID: PMC7221178 DOI: 10.3389/fimmu.2020.00563] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [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: 12/17/2019] [Accepted: 03/12/2020] [Indexed: 12/21/2022] Open
Abstract
Objectives: In hemophilia A the presence of non-neutralizing antibodies (NNAs) against Factor VIII (FVIII) may predict the development of neutralizing antibodies (inhibitors) and accelerate the clearance of administrated FVIII concentrates. This systematic review aimed to assess: (1) the prevalence and incidence of NNAs in patients with congenital hemophilia without inhibitors and (2) the association between NNAs and patient and treatment characteristics. Methods: We conducted a search in MEDLINE, Embase, Web of Science and the Cochrane database. We included cross-sectional and longitudinal studies reporting on NNAs in patients with hemophilia A and B, who were inhibitor-negative at the start of the observation period. Data were extracted on: hemophilia type and severity, patient and treatment characteristics, NNA prevalence and incidence, NNA assays and inhibitor development. Two independent reviewers performed study selection, data extraction and risk of bias assessment, using adapted criteria of the Joanna Briggs Institute. Studies were classified as high-quality when ≥5/9 criteria were met. NNA assays were classified as high-quality when both quality criteria were met: (1) use of positive controls and (2) competition with FVIII to establish FVIII-specificity. We reported NNA prevalence and incidence for each study. The pooled NNA prevalence was assessed for well-designed studies in previously treated patients, employing high-quality NNA assays. Results: We included data from 2,723 inhibitor-negative patients with hemophilia A, derived from 28 studies. Most studies were cross-sectional (19/28) and none reported on NNAs in hemophilia B. Study design was of high quality in 16/28 studies and the NNA assay quality was high in 9/28 studies. Various NNA assays were used, predominantly ELISA (18/28) with different cut-off values. We found a large variety in NNA prevalence (Range, 0–100%). The pooled NNA prevalence in high-quality studies was 25% (95% CI, 16–38%). The incidence of new NNA development was reported in one study (0.01 NNA per person-exposure day). Conclusion: This systematic review identified studies that were heterogeneous in study design, patient population and NNA assay type, with NNA prevalence ranging from 0 to 100% in inhibitor-negative patients with hemophilia A. The pooled NNA prevalence was 25% in high-quality studies including only previously treated patients and performing high-quality NNA assays.
Collapse
Affiliation(s)
- A Abdi
- Department of Pediatric Hematology, Amsterdam UMC, Emma Children's Hospital, University of Amsterdam, Amsterdam, Netherlands
| | - M R Bordbar
- Hematology Research Center, Nemazee Hospital, Shiraz University of Medical Sciences, Shiraz, Iran
| | - S Hassan
- Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, Netherlands
| | - F R Rosendaal
- Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, Netherlands
| | - J G van der Bom
- Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, Netherlands.,Center for Clinical Transfusion Research, Sanquin Research, Leiden, Netherlands
| | - J Voorberg
- Department of Molecular Cellular Hemostasis, Sanquin Research and Landsteiner Laboratory, Amsterdam, Netherlands.,Department of Experimental Vascular Medicine, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, Netherlands
| | - K Fijnvandraat
- Department of Pediatric Hematology, Amsterdam UMC, Emma Children's Hospital, University of Amsterdam, Amsterdam, Netherlands.,Department of Molecular Cellular Hemostasis, Sanquin Research and Landsteiner Laboratory, Amsterdam, Netherlands
| | - S C Gouw
- Department of Pediatric Hematology, Amsterdam UMC, Emma Children's Hospital, University of Amsterdam, Amsterdam, Netherlands.,Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, Netherlands
| |
Collapse
|
9
|
Klaassen IL, Sol JJ, Suijker MH, Fijnvandraat K, van de Wetering MD, Heleen van Ommen C. Are low-molecular-weight heparins safe and effective in children? A systematic review. Blood Rev 2019; 33:33-42. [DOI: 10.1016/j.blre.2018.06.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 06/16/2018] [Accepted: 06/26/2018] [Indexed: 10/28/2022]
|
10
|
Boender J, Eikenboom J, van der Bom JG, Meijer K, de Meris J, Fijnvandraat K, Cnossen MH, Laros-van Gorkom BAP, van Heerde WL, Mauser-Bunschoten EP, de Maat MPM, Leebeek FWG. Clinically relevant differences between assays for von Willebrand factor activity. J Thromb Haemost 2018; 16:2413-2424. [PMID: 30358069 DOI: 10.1111/jth.14319] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [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: 06/07/2018] [Indexed: 01/07/2023]
Abstract
Essentials It is unclear whether there are differences between von Willebrand factor (VWF) activity assays. We compared the four most used VWF activity assays in 661 von Willebrand disease (VWD) patients. All assays correlated excellently, but a discrepant classification was seen in 20% of patients. Differences between VWF activity assays have a large impact on the classification of VWD. SUMMARY: Background Measuring the ability of von Willebrand factor (VWF) to bind to platelets is crucial for the diagnosis and classification of von Willebrand disease (VWD). Several assays that measure this VWF activity using different principles are available, but the clinical relevance of different assay principles is unclear. Objective To compare the four most widely used VWF activity assays in a large VWD patient population. Methods We measured VWF:RCo (ristocetin to activate VWF + whole platelets), VWF:GPIbR (ristocetin + platelet glycoprotein Ib receptor [GPIb] fragments), VWF:GPIbM (gain-of-function GPIb fragments that bind VWF spontaneously without ristocetin) and VWF:Ab (monoclonal antibody directed against the GPIb binding epitope of VWF to mimic platelets) in 661 VWD patients from the nationwide 'Willebrand in the Netherlands' (WiN) Study. Results All assays correlated excellently (Pearson r > 0.9), but discrepant results led to a different classification for up to one-fifth of VWD patients. VWF:RCo was not sensitive enough to classify 18% of patients and misclassified half of genotypic 2B VWD patients, especially those with p.Arg1306Trp. VWF:GPIbR was more sensitive, accurately classified the vast majority of patients, and was unaffected by the p.Asp1472His variant that causes artificially low VWF:RCo. VWF:GPIbM was the most precise assay but misclassified over a quarter of genotypic 2A, 2B and 3 patients. VWF:Ab, often not considered an actual VWF activity assay, performed at least equally to the other assays with regard to accurate VWD classification. Conclusion Although the different VWF activity assays are often considered similar, differences between assays have a large impact on the classification of VWD.
Collapse
Affiliation(s)
- J Boender
- Hematology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - J Eikenboom
- Internal Medicine, Division, Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, the Netherlands
- Einthoven Laboratory for Vascular and Regenerative Medicine, Leiden University Medical Center, Leiden, the Netherlands
| | - J G van der Bom
- Clinical Epidemiology, Leiden University Medical Center, Leiden, the Netherlands
- Sanquin Research, Jon J van Rood Center for Clinical Transfusion Medicine, Leiden, the Netherlands
| | - K Meijer
- Hematology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - J de Meris
- Netherlands Hemophilia Society, Nijkerk, the Netherlands
| | - K Fijnvandraat
- Pediatric Hematology, Emma Children's Hospital, Academic Medical Center, Amsterdam, the Netherlands
- Department of Plasma Proteins, Sanquin Research, Amsterdam, the Netherlands
| | - M H Cnossen
- Pediatric Hematology, Erasmus University Medical Center - Sophia Children's Hospital, Rotterdam, the Netherlands
| | | | - W L van Heerde
- Hematology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - E P Mauser-Bunschoten
- University Medical Center Utrecht, van Creveld Kliniek, University Utrecht, Utrecht, the Netherlands
| | - M P M de Maat
- Hematology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - F W G Leebeek
- Hematology, Erasmus University Medical Center, Rotterdam, the Netherlands
| |
Collapse
|
11
|
Makris M, Oldenburg J, Mauser-Bunschoten EP, Peerlinck K, Castaman G, Fijnvandraat K. The definition, diagnosis and management of mild hemophilia A: communication from the SSC of the ISTH. J Thromb Haemost 2018; 16:2530-2533. [PMID: 30430726 DOI: 10.1111/jth.14315] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Accepted: 08/19/2018] [Indexed: 02/03/2023]
Affiliation(s)
- M Makris
- Sheffield Haemophilia and Thrombosis Centre, Royal Hallamshire Hospital, Sheffield, UK
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, UK
| | - J Oldenburg
- Institute of Experimental Haematology and Transfusion Medicine, University Clinic Bonn, Bonn, Germany
| | | | - K Peerlinck
- Department of Vascular Medicine and Haemostasis, Haemophilia Centre, University Hospitals Leuven, Leuven, Belgium
| | - G Castaman
- Centre for Bleeding Disorders, Department of Oncology, Careggi University Hospital, Florence, Italy
| | - K Fijnvandraat
- Department of Pediatric Hematology, Academic Medical Centre, Amsterdam, the Netherlands
| |
Collapse
|
12
|
Preijers T, Hazendonk HCAM, Liesner R, Chowdary P, Driessens MHE, Hart D, Keeling D, Laros-van Gorkom BAP, van der Meer FJM, Meijer K, Fijnvandraat K, Leebeek FWG, Collins PW, Cnossen MH, Mathôt RAA. Population pharmacokinetics of factor IX in hemophilia B patients undergoing surgery. J Thromb Haemost 2018; 16:2196-2207. [PMID: 30394056 DOI: 10.1111/jth.14292] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [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: 03/30/2018] [Indexed: 01/19/2023]
Abstract
Essentials Factor IX (FIX) dosing using body weight frequently results in under and overdosing during surgery. We aimed to establish a population pharmacokinetic (PK) model describing the perioperative FIX levels. Population PK parameter values for clearance and V1 were 284 mL h-170 kg-1 and 5450 mL70 kg-1. Perioperative PK parameters differ from those during non-surgical prophylactic treatment. SUMMARY: Background Hemophilia B is a bleeding disorder characterized by a deficiency of coagulation factor IX (FIX). In the perioperative setting, patients receive FIX concentrates to ensure hemostasis. Although FIX is usually dosed according to bodyweight, under- and overdosing occurs frequently during surgery. Aim The objective was to quantify and explain the interpatient variability of perioperatively administered plasma-derived (pd) and recombinant (r) FIX concentrates. Methods Data were collected from 118 patients (median age, 40 years [range, 0.2-90]; weight, 79 kg [range, 5.3-132]) with moderate (28%) or severe hemophilia B (72%), undergoing 255 surgical procedures. Population pharmacokinetic (PK) parameters were estimated using nonlinear mixed-effect modeling in NONMEM. Results Measured perioperative FIX level vs. time profiles were adequately described using a three-compartment PK model. For a typical 34-year-old patient receiving rFIX, clearance (CL), intercompartmental clearance (Q2, Q3), distribution volume of the central compartment (V1) and peripheral compartments (V2, V3) plus interpatient variability (%CV) were: CL, 284 mL h-170 kg-1 (18%); V1, 5450 mL70 kg-1 (19%); Q2, 110 mL h-170 kg-1; V2, 4800 mL70 kg-1; Q3, 1610 mL h-170 kg-1; V3, 2040 mL70 kg-1. From 0.2 years, CL and V1 decreased 0.89% and 1.15% per year, respectively, until the age of 34 years. Patients receiving pdFIX exhibited a lower CL (11%) and V1 (17%) than patients receiving rFIX. Interpatient variability was successfully quantified and explained. Conclusions The estimated perioperative PK parameters of both pdFIX and rFIX are different from those reported for prophylactic treatment. The developed model may be used to apply PK-guided dosing of FIX concentrates during surgery.
Collapse
Affiliation(s)
- T Preijers
- Hospital Pharmacy-Clinical Pharmacology, Academic Medical Center Amsterdam, Amsterdam, the Netherlands
| | - H C A M Hazendonk
- Department of Pediatric Hematology, Erasmus University Medical Center - Sophia Children's Hospital Rotterdam, Rotterdam, the Netherlands
| | - R Liesner
- Great Ormond Street Haemophilia Centre, Great Ormond Street Hospital for Children NHS Trust, London, UK
| | - P Chowdary
- Katharine Dormandy Haemophilia and Thrombosis Centre, Royal Free Hospital, London, UK
| | - M H E Driessens
- Netherlands Hemophilia Patient Society (NVHP), Nijkerk, the Netherlands
| | - D Hart
- Department of Haematology, The Royal London Hospital Barts Health NHS Trust, London, UK
| | - D Keeling
- Oxford Haemophilia and Thrombosis Centre, Oxford University Hospitals, Churchill Hospital, Oxford, UK
| | | | - F J M van der Meer
- Department of Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, the Netherlands
| | - K Meijer
- Department of Hematology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - K Fijnvandraat
- Department of Pediatric Hematology, Academic Medical Center Amsterdam, Amsterdam, the Netherlands
- Department of Plasma Proteins, Sanquin Research, Amsterdam, the Netherlands
| | - F W G Leebeek
- Department of Hematology, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - P W Collins
- Arthur Bloom Haemophilia Centre, Institute of Infection and Immunity, School of Medicine, Cardiff University, Cardiff, UK
| | - M H Cnossen
- Department of Pediatric Hematology, Erasmus University Medical Center - Sophia Children's Hospital Rotterdam, Rotterdam, the Netherlands
| | - R A A Mathôt
- Hospital Pharmacy-Clinical Pharmacology, Academic Medical Center Amsterdam, Amsterdam, the Netherlands
| |
Collapse
|
13
|
Fustolo-Gunnink SF, Huisman EJ, van der Bom JG, van Hout FMA, Makineli S, Lopriore E, Fijnvandraat K. Are thrombocytopenia and platelet transfusions associated with major bleeding in preterm neonates? A systematic review. Blood Rev 2018; 36:1-9. [PMID: 30318111 DOI: 10.1016/j.blre.2018.10.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [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: 08/07/2018] [Accepted: 10/07/2018] [Indexed: 11/16/2022]
Abstract
Over 75% of severely thrombocytopenic preterm neonates receive platelet transfusions to prevent bleeding, but transfusion guidelines are based mainly on expert opinion. The aim of this review was to investigate whether platelet counts, platelet transfusions or platelet indices are associated with major bleeding in preterm neonates. We performed a systematic search of the EMBASE and MEDLINE databases until December 2017. We included randomized trials, cohort and case control studies. (Prospero: CRD42015013399). We screened 8734 abstracts and 1225 fulltexts, identifying 36 eligible studies. In 30, timing of the platelet counts or transfusions in relation to the bleeding was unclear. Of the remaining six studies, two showed that thrombocytopenia was associated with increased risk of bleeding, two showed no such assocation, and three showed lack of an association between platelet transfusions and bleeding risk. No studies assessing platelet indices were found. The study results suggest that prophylactic platelet transfusions may not reduce bleeding risk in preterm neonates.
Collapse
Affiliation(s)
- S F Fustolo-Gunnink
- Sanquin blood supply foundation, Department of clinical transfusion medicine, Plesmanlaan 1A, 2333 BZ Leiden, the Netherlands; Amsterdam University Medical Center, Emma Children's Hospital, Department of pediatric hematology, Meibergdreef 9, 1105 AZ Amsterdam-Zuidoost, the Netherlands; Leiden University Medical Center, Department of Clinical Epidemiology, Albinusdreef 2, 2333 ZA Leiden, the Netherlands.
| | - E J Huisman
- Erasmus Medical Center, Sophia Children's hospital, Department of pediatric hematology, Wytemaweg 80, 3015 CN Rotterdam, the Netherlands.
| | - J G van der Bom
- Sanquin blood supply foundation, Department of clinical transfusion medicine, Plesmanlaan 1A, 2333 BZ Leiden, the Netherlands; Leiden University Medical Center, Department of Clinical Epidemiology, Albinusdreef 2, 2333 ZA Leiden, the Netherlands.
| | - F M A van Hout
- Sanquin blood supply foundation, Department of clinical transfusion medicine, Plesmanlaan 1A, 2333 BZ Leiden, the Netherlands.
| | - S Makineli
- Amsterdam University Medical Center, Emma Children's Hospital, Department of pediatric hematology, Meibergdreef 9, 1105 AZ Amsterdam-Zuidoost, the Netherlands.
| | - E Lopriore
- Leiden University Medical Center, Willem Alexander Children's hospital, Department of neonatology, Albinusdreef 2, 2333 ZA Leiden, the Netherlands.
| | - K Fijnvandraat
- Amsterdam University Medical Center, Emma Children's Hospital, Department of pediatric hematology, Meibergdreef 9, 1105 AZ Amsterdam-Zuidoost, the Netherlands.
| |
Collapse
|
14
|
Hennis BC, Boomsma DI, Fijnvandraat K, Leuven JAG, Peters M, Kluft C. Estrogens Reduce Plasma Histidine-rich Glycoprotein (HRG) Levels in a Dose-dependent Way. Thromb Haemost 2018. [DOI: 10.1055/s-0038-1653801] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [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
SummaryPlasma levels of histidine-rich glycoprotein (HRG) were investigated in three groups of women receiving a different dose of estrogens. First, the effect of low-dose estrogen was studied in a group of 83 postmenopausal women who were treated with 0.625 mg conjugated estrogens (CE). No significant change from baseline levels was found at the end of cycle 3 and cycle 13. Secondly, in 15 mothers and 23 daughters using oral contraceptives (OC) containing 30-50 fig ethinyl estradiol (EE) daily the mean HRG level was 14% and 24% lower than in a group of 144 mothers and 134 daughters not taking oral contraceptives, respectively (p < 0.05). Finally, in 11 excessively tall prepuberal girls who received 300 μg EE daily to reduce their final height the mean plasma HRG levels were decreased by 68% (p < 0.005). The effect of proges- togens administered during low-dose and high-dose estrogen therapy appeared to be minor.The results from these three studies indicate that estrogens reduce plasma HRG levels in a dose-dependent way.
Collapse
Affiliation(s)
- B C Hennis
- The Gaubius Laboratory, TNO-PG, Leiden, The Netherlands
| | - D I Boomsma
- Dept. of Psychonomics, Free University Amsterdam, Amsterdam, The Netherlands
| | - K Fijnvandraat
- EKZ/Children’s Academic Medical Centre, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands
| | | | - M Peters
- EKZ/Children’s Academic Medical Centre, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands
| | - C Kluft
- The Gaubius Laboratory, TNO-PG, Leiden, The Netherlands
| |
Collapse
|
15
|
Fijnvandraat K, Berntorp E, ten Cate JW, Johnsson H, Peters M, Savidge G, Tengborn L, Spira J, Stahl C. Recombinant, B-domain Deleted Factor VIII (r-VIII SQ): Pharmacokinetics and Initial Safety Aspects in Hemophilia A Patients. Thromb Haemost 2018. [DOI: 10.1055/s-0038-1655957] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [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
SummaryThe pharmacokinetics of a second-generation recombinant B-domain deleted factor VIII (FVIII) preparation (r-VIII SQ) were studied in 36 patients with severe hemophilia A. In contrast to full-length recombinant FVIII, no albumin needs to be added to stabilize the final formulation of this B-domain deleted FVIII preparation.The in vivo recovery and half-life of r-VIII SQ were similar to those of plasma-derived (pd) FVIII (mean half-life of r-VIII SQ, 11.7 h). The volume of distribution and clearance were slightly, but significantly, higher for r-VIII SQ than for pdFVIII (p<0.05). Peak plasma levels of FVIII were consistently related to the administered dose of r-VIII SQ (r = 0.94, p<0.0001). The pharmacokinetic profile of r-VIII SQ remained essentially unchanged in a dose range of 25-100 IU/kg body weight and could be reproduced after repeated doses. r-VIII SQ was well tolerated.In conclusion, deletion of the B-domain of FVIII does not influence its in vivo pharmacokinetics.
Collapse
Affiliation(s)
- K Fijnvandraat
- The Academic Medical Center, University of Amsterdam, Emma Children’s Hospital AMC, Department of Pediatrics, Amsterdam, The Netherlands
- Center for Thrombosis, Hemostasis, Atherosclerosis and Inflammation Research, Academic Medical Center, Amsterdam, The Netherlands
| | - E Berntorp
- Malmø University Hospital, Malmø, Sweden
| | - J W ten Cate
- Center for Thrombosis, Hemostasis, Atherosclerosis and Inflammation Research, Academic Medical Center, Amsterdam, The Netherlands
| | | | - M Peters
- The Academic Medical Center, University of Amsterdam, Emma Children’s Hospital AMC, Department of Pediatrics, Amsterdam, The Netherlands
| | - G Savidge
- St. Thomas Hospital, London, United Kingdom
| | | | - J Spira
- Pharmacia AB, Stockholm, Sweden
| | - C Stahl
- Pharmacia AB, Stockholm, Sweden
| |
Collapse
|
16
|
Hazendonk HCAM, Preijers T, Liesner R, Chowdary P, Hart D, Keeling D, Driessens MHE, Laros-van Gorkom BAP, van der Meer FJM, Meijer K, Fijnvandraat K, Leebeek FWG, Mathôt RAA, Collins PW, Cnossen MH. Perioperative replacement therapy in haemophilia B: An appeal to "B" more precise. Haemophilia 2018; 24:611-618. [PMID: 29707861 DOI: 10.1111/hae.13469] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [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: 02/14/2018] [Indexed: 12/24/2022]
Abstract
INTRODUCTION Haemophilia B is caused by a deficiency of coagulation factor IX (FIX) and characterized by bleeding in muscles and joints. In the perioperative setting, patients are treated with FIX replacement therapy to secure haemostasis. Targeting of specified FIX levels is challenging and requires frequent monitoring and adjustment of therapy. AIM To evaluate perioperative management in haemophilia B, including monitoring of FIX infusions and observed FIX levels, whereby predictors of low and high FIX levels were assessed. METHODS In this international multicentre study, haemophilia B patients with FIX < 0.05 IU mL-1 undergoing elective, minor or major surgical procedures between 2000 and 2015 were included. Data were collected on patient, surgical and treatment characteristics. Observed FIX levels were compared to target levels as recommended by guidelines. RESULTS A total of 255 surgical procedures were performed in 118 patients (median age 40 years, median body weight 79 kg). Sixty percent of FIX levels within 24 hours of surgery were below target with a median difference of 0.22 IU mL-1 [IQR 0.12-0.36]; while >6 days after surgery, 59% of FIX levels were above target with a median difference of 0.19 IU mL-1 [IQR 0.10-0.39]. Clinically relevant bleeding complications (necessity of a second surgical intervention or red blood cell transfusion) occurred in 7 procedures (2.7%). CONCLUSION This study demonstrates that targeting of FIX levels in the perioperative setting is complex and suboptimal, but although this bleeding is minimal. Alternative dosing strategies taking patient and surgical characteristics as well as pharmacokinetic principles into account may help to optimize and individualize treatment.
Collapse
Affiliation(s)
- H C A M Hazendonk
- Department of Paediatric Haematology, Erasmus University Medical Centre - Sophia Children's Hospital Rotterdam, Rotterdam, The Netherlands
| | - T Preijers
- Hospital Pharmacy - Clinical Pharmacology, Academic Medical Centre Amsterdam, Amsterdam, The Netherlands
| | - R Liesner
- Great Ormond Street Haemophilia Centre, Great Ormond Street Hospital for Children NHS trust, London, UK
| | - P Chowdary
- Katharine Dormandy Haemophilia Centre and Thrombosis Unit, Royal Free London NHS Foundation Trust, London, UK
| | - D Hart
- Department of Haematology, The Royal London Hospital Barts Health NHS Trust, London, UK
| | - D Keeling
- Oxford Haemophilia and Thrombosis Centre, Oxford University Hospitals, Churchill Hospital, Oxford, UK
| | - M H E Driessens
- Netherlands Haemophilia Patient Society (NVHP), Nijkerk, The Netherlands
| | | | - F J M van der Meer
- Department of Thrombosis and Haemostasis, Leiden University Medical Centre, Leiden, The Netherlands
| | - K Meijer
- Department of Haematology, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands
| | - K Fijnvandraat
- Department of Paediatric Haematology, Academic Medical Centre Amsterdam, Amsterdam, The Netherlands
| | - F W G Leebeek
- Department of Haematology, Erasmus University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - R A A Mathôt
- Hospital Pharmacy - Clinical Pharmacology, Academic Medical Centre Amsterdam, Amsterdam, The Netherlands
| | - P W Collins
- Arthur Bloom Haemophilia Centre, Institute of Infection and Immunity, School of Medicine, Cardiff University, Cardiff, UK
| | - M H Cnossen
- Department of Paediatric Haematology, Erasmus University Medical Centre - Sophia Children's Hospital Rotterdam, Rotterdam, The Netherlands
| |
Collapse
|
17
|
Hazendonk HCAM, Heijdra JM, de Jager NCB, Veerman HC, Boender J, van Moort I, Mathôt RAA, Meijer K, Laros-van Gorkom BAP, Eikenboom J, Fijnvandraat K, Leebeek FWG, Cnossen MH. Analysis of current perioperative management with Haemate ® P/Humate P ® in von Willebrand disease: Identifying the need for personalized treatment. Haemophilia 2018; 24:460-470. [PMID: 29573506 DOI: 10.1111/hae.13451] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [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: 01/31/2018] [Indexed: 12/17/2022]
Abstract
INTRODUCTION Patients with Von Willebrand disease (VWD) are regularly treated with VWF-containing concentrates in case of acute bleeding, trauma and dental or surgical procedures. AIM In this multicentre retrospective study, current perioperative management with a von Willebrand factor (VWF)/Factor VIII (FVIII) concentrate (Haemate® P) in patients with VWD was evaluated. PATIENTS/METHODS Patients with VWD undergoing minor or major surgery between 2000 and 2015, requiring treatment with a VWF/FVIII concentrate (Haemate® P), were included. Achieved VWF activity (VWF:Act) and FVIII during FVIII-based treatment regimens were compared to predefined target levels in national guidelines. RESULTS In total, 103 patients with VWD (148 surgeries) were included: 54 type 1 (73 surgeries), 43 type 2 (67 surgeries) and 6 type 3 (8 surgeries). Overall, treatment resulted in high VWF:Act and FVIII levels, defined as ≥0.20 IU/mL above predefined levels. In patients with type 1 VWD, respectively, 65% and 91% of trough VWF:Act and FVIII levels were higher than target levels. In patients with type 2 and type 3 VWD, respectively, 53% and 57% of trough VWF:Act and 72% and 73% of trough FVIII levels were higher than target level. Furthermore, FVIII accumulation over time was observed, while VWF:Act showed a declining trend, leading to significantly higher levels of FVIII than VWF:Act. CONCLUSION High VWF:Act and accumulation of FVIII were observed after perioperative FVIII-based replacement therapy in patients with VWD, both underlining the necessity of personalization of dosing regimens to optimize perioperative treatment.
Collapse
Affiliation(s)
- H C A M Hazendonk
- Department of Paediatric Haematology, Erasmus University Medical Centre - Sophia Children's Hospital Rotterdam, Rotterdam, Netherlands
| | - J M Heijdra
- Department of Paediatric Haematology, Erasmus University Medical Centre - Sophia Children's Hospital Rotterdam, Rotterdam, Netherlands
| | - N C B de Jager
- Hospital Pharmacy - Clinical Pharmacology, Academic Medical Centre Amsterdam, Amsterdam, Netherlands
| | - H C Veerman
- Department of Paediatric Haematology, Erasmus University Medical Centre - Sophia Children's Hospital Rotterdam, Rotterdam, Netherlands
| | - J Boender
- Department of Haematology, Erasmus University Medical Centre Rotterdam, Rotterdam, Netherlands
| | - I van Moort
- Department of Paediatric Haematology, Erasmus University Medical Centre - Sophia Children's Hospital Rotterdam, Rotterdam, Netherlands
| | - R A A Mathôt
- Hospital Pharmacy - Clinical Pharmacology, Academic Medical Centre Amsterdam, Amsterdam, Netherlands
| | - K Meijer
- Department of Haematology, University of Groningen, University Medical Centre Groningen, Groningen, Netherlands
| | | | - J Eikenboom
- Department of Thrombosis and Haemostasis, Leiden University Medical Centre, Leiden, Netherlands
| | - K Fijnvandraat
- Department of Paediatric Haematology, Academic Medical Centre Amsterdam, Amsterdam, Netherlands
| | - F W G Leebeek
- Department of Haematology, Erasmus University Medical Centre Rotterdam, Rotterdam, Netherlands
| | - M H Cnossen
- Department of Paediatric Haematology, Erasmus University Medical Centre - Sophia Children's Hospital Rotterdam, Rotterdam, Netherlands
| | | |
Collapse
|
18
|
Preijers T, van Moort I, Fijnvandraat K, Leebeek FWG, Cnossen MH, Mathôt RAA. Cross-evaluation of Pharmacokinetic-Guided Dosing Tools for Factor VIII. Thromb Haemost 2018. [PMID: 29534249 DOI: 10.1055/s-0038-1623531] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [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
BACKGROUND Patients with severe and moderate haemophilia A are treated prophylactically with factor VIII (FVIII) concentrate. Individualization of prophylaxis can be achieved by pharmacokinetic (PK)-guided dosing. AIM In this study, the performance of three PK tools (myPKFiT, Web-Accessible Population Pharmacokinetic Service-Hemophilia [WAPPS] and NONMEM) is compared. METHODS In 39 patients, with severe or moderate haemophilia A, blood samples were collected 4, 24 and 48 hours after administration of 50 IU kg-1 of recombinant FVIII (Advate [n = 30] or Kogenate [n = 9]). FVIII dose, FVIII activity and patient characteristics were entered into the three PK tools. Obtained PK parameters and dosing advises were compared. RESULTS myPKFiT provided PK parameters for 24 of 30 patients receiving Advate, whereas WAPPS and NONMEM provided estimates for all patients. Half-life was different among the three methods: medians were 12.6 hours (n = 24), 11.2 hours (n = 30) and 13.0 hours (n = 30) for myPKFiT, WAPPS and NONMEM (p < 0.001), respectively. To maintain a FVIII trough level of 0.01 IU mL-1 after 48 hours, doses for myPKFiT and NONMEM were 15.1 and 11.0 IU kg-1 (p < 0.01, n = 11) and for WAPPS and NONMEM were 9.0 and 8.0 IU kg-1 (p < 0.01, n = 23), respectively. In nine patients receiving Kogenate, WAPPS and NONMEM produced different PK-parameter estimates; half-life was 15.0 and 12.3 hours and time to 0.05 IU mL-1 was 69.2 and 60.8 hours, respectively (p < 0.01, n = 9). However, recommended doses to obtain these levels were not different. CONCLUSION The three evaluated PK tools produced different PK parameters and doses for recombinant FVIII. Haematologists should be aware that recommended doses may be influenced by the choice of PK tool.
Collapse
Affiliation(s)
- T Preijers
- Department of Clinical Pharmacology, Hospital Pharmacy-Clinical Pharmacology, Academic Medical Center, Amsterdam, The Netherlands
| | - I van Moort
- Department of Pediatric Hematology, Sophia Children's Hospital, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - K Fijnvandraat
- Department of Pediatric Hematology, Academic Medical Center, Amsterdam, The Netherlands
| | - F W G Leebeek
- Department of Hematology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - M H Cnossen
- Department of Pediatric Hematology, Sophia Children's Hospital, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - R A A Mathôt
- Department of Clinical Pharmacology, Hospital Pharmacy-Clinical Pharmacology, Academic Medical Center, Amsterdam, The Netherlands
| | | |
Collapse
|
19
|
Limperg PF, Joosten MMH, Fijnvandraat K, Peters M, Grootenhuis MA, Haverman L. Male gender, school attendance and sports participation are positively associated with health-related quality of life in children and adolescents with congenital bleeding disorders. Haemophilia 2018; 24:395-404. [DOI: 10.1111/hae.13420] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/19/2017] [Indexed: 12/19/2022]
Affiliation(s)
- P. F. Limperg
- Psychosocial Department; Emma Children's Hospital/Academic Medical Center; Amsterdam The Netherlands
| | - M. M. H. Joosten
- Psychosocial Department; Emma Children's Hospital/Academic Medical Center; Amsterdam The Netherlands
| | - K. Fijnvandraat
- Department of Pediatric-Hematology; Hemophilia Comprehensive Care Treatment Center; Academic Medical Center; Emma Children's Hospital; Amsterdam The Netherlands
| | - M. Peters
- Department of Pediatric-Hematology; Hemophilia Comprehensive Care Treatment Center; Academic Medical Center; Emma Children's Hospital; Amsterdam The Netherlands
| | - M. A. Grootenhuis
- Psychosocial Department; Emma Children's Hospital/Academic Medical Center; Amsterdam The Netherlands
| | - L. Haverman
- Psychosocial Department; Emma Children's Hospital/Academic Medical Center; Amsterdam The Netherlands
| |
Collapse
|
20
|
Hazendonk HCAM, van Moort I, Mathôt RAA, Fijnvandraat K, Leebeek FWG, Collins PW, Cnossen MH. Setting the stage for individualized therapy in hemophilia: What role can pharmacokinetics play? Blood Rev 2018; 32:265-271. [PMID: 29426727 DOI: 10.1016/j.blre.2018.01.001] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [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: 11/08/2016] [Revised: 01/16/2018] [Accepted: 01/23/2018] [Indexed: 02/06/2023]
Abstract
Replacement therapy with clotting factor concentrates (CFC) is the mainstay of treatment in hemophilia. Its widespread application has led to a dramatic decrease in morbidity and mortality in patients, with concomitant improvement of quality of life. However, dosing is challenging and costs are high. This review discusses benefits and limitations of pharmacokinetic (PK)-guided dosing of replacement therapy as an alternative for current dosing regimens. Dosing of CFC is now primarily based on body weight and based on its in vivo recovery (IVR). Benefits of PK-guided dosing include individualization of treatment with better targeting, more flexible blood sampling, increased insight into association of coagulation factor levels and bleeding, and potential overall lowering of overall costs. Limitations include a slight burden for the patient, and availability of closely collaborating, experienced clinical pharmacologists.
Collapse
Affiliation(s)
- H C A M Hazendonk
- Department of Pediatric Hematology, Erasmus University Medical Center, Sophia Children's Hospital, Rotterdam, The Netherlands
| | - I van Moort
- Department of Pediatric Hematology, Erasmus University Medical Center, Sophia Children's Hospital, Rotterdam, The Netherlands
| | - R A A Mathôt
- Hospital Pharmacy - Clinical Pharmacology, Academic Medical Center, Amsterdam, The Netherlands
| | - K Fijnvandraat
- Department of Pediatric Hematology, Academic Medical Center, Amsterdam, The Netherlands; Department of Plasma Proteins, Sanquin Research, Amsterdam, The Netherlands
| | - F W G Leebeek
- Department of Hematology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - P W Collins
- Department of Haematology, School of Medicine, Cardiff University, United Kingdom
| | - M H Cnossen
- Department of Pediatric Hematology, Erasmus University Medical Center, Sophia Children's Hospital, Rotterdam, The Netherlands.
| | | |
Collapse
|
21
|
Ludlam C, Colvin B, Hill F, Preston F, Wasseem N, Bagnall R, Peake I, Berntorp E, Bunschoten EM, Fijnvandraat K, Kasper C, White G, Santagostino E, Hay C. Factor VIII Inhibitors in Mild and Moderate-severity Haemophilia A. Thromb Haemost 2017. [DOI: 10.1055/s-0037-1615061] [Citation(s) in RCA: 123] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
SummaryTwenty six patients with mild or moderate haemophilia A and inhibitors are described. The inhibitor was detected at a median age of 33 years, after a median of 5.5 bleeding episodes. This usually following intensive replacement therapy. The median presenting inhibitor titre was antihuman 11.6 BU/ml, antiporcine 1.45 BU/ml. Plasma basal factor VIII level declined from a median of 0.08 IU/ml to 0.01 IU/ml following the inhibitor development. This caused spontaneous bleeding in 22 and a bleeding pattern similar to acquired haemophilia in 17. Bleeding was often severe and caused two deaths.The inhibitor disappeared spontaneously, or following immune tolerance induction, in 16 cases after a median of 9 months (range 0.5-46), with a return to the original baseline VIIIC level and bleeding pattern accompanied inhibitor loss. The inhibitor persisted in the remainder of the cases over a median period of 99 months (range 17-433 months) of follow-up. Inhibitors are an uncommon complication of mild haemophilia which frequently persist and may be associated with severe, life-threatening, haemorrhage.Forty-one percent of treated haemophilic family members had a history of factor VIII inhibitors, suggesting a familial predisposition to develop inhibitors in these kindreds. Sixteen patients from 11 families were genotyped. Seven different missense mutations affecting the light chain were detected and two in the A2 domain. Five patients from three families had a mutation causing a substitution of Trp2229 by Cys in the C2 domain which appears to predispose to inhibitor formation since 7 of the 18 affected individuals have a history of inhibitor development.
Collapse
|
22
|
Preijers T, Hazendonk HCAM, Fijnvandraat K, Leebeek FWG, Cnossen MH, Mathôt RAA. In silico evaluation of limited blood sampling strategies for individualized recombinant factor IX prophylaxis in hemophilia B patients. J Thromb Haemost 2017; 15:1737-1746. [PMID: 28688133 DOI: 10.1111/jth.13771] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [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: 10/13/2016] [Indexed: 02/06/2023]
Abstract
Essentials Individual pharmacokinetic (PK) parameters can be obtained by limited sampling strategies (LSSs). Following 100 IU kg-1 rFIX, LSSs with 1 to 3 samples were evaluated in 5000 simulated subjects. For all LSSs, estimated individual PK parameters showed acceptable bias and precision. One sample between 10 min-3 h and two between 48 h-56 h showed best predictive performance. SUMMARY Background Patients with severe hemophilia B regularly administer prophylactic intravenous doses of clotting factor IX concentrate to maintain a trough level of at least 0.01 IU mL-1 in order to prevent joint bleeds. Assessment of individual pharmacokinetic (PK) parameters allows individualization of the recombinant factor IX (rFIX) dose. Aim To evaluate the predictive performance of limited sampling strategies (LSSs) with one to three samples to estimate individual PK parameters of rFIX. Methods Monte Carlo simulations were performed to obtain 5000 concentration-time profiles by the use of population PK parameters for rFIX from literature. Eleven LSSs were developed with one, two or three samples taken within an 80-h interval following administration of 100 IU kg-1 rFIX. Clearance (CL), half-life (t1/2 ), time to 1% and steady-state distribution volume (Vss ) were estimated for each simulated individual by the use of Bayesian analysis. Results For each LSS, average bias was small for CL (range - 1.5% to 1.4%), t1/2 (range - 4.5% to - 0.7%), time to 1% (range - 2.9% to 0%), and Vss (range - 3.7% to 0.3%). Imprecision for these parameters ranged from 6.4% to 11.9%, from 10.3% to 15.6%, from 7.3% to 10.9%, and from 9% to 20.1%, respectively. The best predictive performance was achieved with one sample taken between 10 min and 3 h and two samples taken between 48 h and 56 h after administration of rFIX. Conclusions This study demonstrates that limited sampling strategies, used for individualized dosing of rFIX in hemophilia B patients, can be developed and evaluated by in silico simulation.
Collapse
Affiliation(s)
- T Preijers
- Hospital Pharmacy-Clinical Pharmacology, Academic Medical Center Amsterdam, Amsterdam, the Netherlands
| | - H C A M Hazendonk
- Department of Pediatric Hematology, Erasmus University Medical Center - Sophia Children's Hospital Rotterdam, Rotterdam, the Netherlands
| | - K Fijnvandraat
- Department of Pediatric Hematology, Academic Medical Center Amsterdam, Amsterdam, the Netherlands
| | - F W G Leebeek
- Department of Hematology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - M H Cnossen
- Department of Pediatric Hematology, Erasmus University Medical Center - Sophia Children's Hospital Rotterdam, Rotterdam, the Netherlands
| | - R A A Mathôt
- Hospital Pharmacy-Clinical Pharmacology, Academic Medical Center Amsterdam, Amsterdam, the Netherlands
| |
Collapse
|
23
|
Affiliation(s)
- J I Loomans
- Pediatric Hematology, Academic Medical Center, Amsterdam, the Netherlands
| | - K Fijnvandraat
- Pediatric Hematology, Academic Medical Center, Amsterdam, the Netherlands
- Department of Plasma Proteins, Sanquin Research, Amsterdam, the Netherlands
| |
Collapse
|
24
|
Sins JWR, Schimmel M, Luken BM, Nur E, Zeerleder SS, van Tuijn CFJ, Brandjes DPM, Kopatz WF, Urbanus RT, Meijers JCM, Biemond BJ, Fijnvandraat K. Dynamics of von Willebrand factor reactivity in sickle cell disease during vaso-occlusive crisis and steady state. J Thromb Haemost 2017; 15:1392-1402. [PMID: 28457019 DOI: 10.1111/jth.13728] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [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: 01/27/2017] [Indexed: 02/02/2023]
Abstract
Essentials The role of von Willebrand Factor (VWF) in the pathophysiology of sickle cell disease is unclear. We assessed markers of VWF during admission for vaso-occlusive crisis (VOC) and steady state. VWF reactivity was higher during VOC and was associated with inflammation and neutrophil activation. Hyper-adhesive VWF may promote VOC in sickle cell disease. SUMMARY Background Endothelial activation plays a central role in the pathophysiology of vaso-occlusion in sickle cell disease (SCD), facilitating adhesive interactions with circulating blood cells. Upon activation, various adhesive molecules are expressed, including von Willebrand factor (VWF). Increased VWF levels have been observed in patients with SCD during steady state. However, the role of VWF in the pathogenesis of SCD vaso-occlusion is unclear. Objectives To longitudinally assess the quantity and reactivity of VWF and its regulating protease ADAMTS-13 during vaso-occlusive crisis (VOC). Methods In this observational study, we obtained sequential blood samples in adult SCD patients during VOC. Results VWF reactivity was significantly higher during VOC (active VWF, VWF glycoprotein Ib-binding activity, and high molecular weight multimers), whereas platelet count and levels of ADAMTS-13 antigen and ADAMTS-13 activity were concomitantly lower than during steady state. Levels of VWF antigen, VWF propeptide (VWF:pp) and ADAMTS-13 specific activity did not change during VOC. VWF reactivity correlated strongly with markers of inflammation and neutrophil activation, and was inversely correlated with the platelet count. In patients who developed acute chest syndrome, levels of VWF, VWF:pp and active, hyperadhesive VWF were significantly higher, whereas ADAMTS-13 activity was lower, than in patients without this complication. Conclusions We provide the first evidence that VOC in SCD is associated with increased reactivity of VWF, without a pronounced ADAMTS-13 deficiency. This hyper-reactivity may be explained by resistance of VWF to proteolysis, secondary to processes such as inflammation and oxidative stress. Hyperadhesive VWF, scavenging blood cells in the microcirculation, may thereby amplify and sustain VOC in SCD.
Collapse
Affiliation(s)
- J W R Sins
- Department of Hematology, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
- Department of Pediatric Hematology, Emma Children's Hospital, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - M Schimmel
- Department of Hematology, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - B M Luken
- Department of Immunopathology, Sanquin Research and Landsteiner Laboratory, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - E Nur
- Department of Hematology, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - S S Zeerleder
- Department of Hematology, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
- Department of Immunopathology, Sanquin Research and Landsteiner Laboratory, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - C F J van Tuijn
- Department of Hematology, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - D P M Brandjes
- Department of Internal Medicine, Slotervaart Hospital, Amsterdam, the Netherlands
| | - W F Kopatz
- Department of Experimental Vascular Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - R T Urbanus
- Department of Clinical Chemistry and Hematology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - J C M Meijers
- Department of Experimental Vascular Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
- Department of Plasma Proteins, Sanquin Research, Amsterdam, the Netherlands
| | - B J Biemond
- Department of Hematology, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - K Fijnvandraat
- Department of Pediatric Hematology, Emma Children's Hospital, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
- Department of Plasma Proteins, Sanquin Research, Amsterdam, the Netherlands
| |
Collapse
|
25
|
van Velzen AS, Eckhardt CL, Peters M, Leebeek FWG, Escuriola-Ettingshausen C, Hermans C, Keenan R, Astermark J, Male C, Peerlinck K, le Cessie S, van der Bom JG, Fijnvandraat K. Intensity of factor VIII treatment and the development of inhibitors in non-severe hemophilia A patients: results of the INSIGHT case-control study. J Thromb Haemost 2017; 15:1422-1429. [PMID: 28440011 DOI: 10.1111/jth.13711] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [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: 10/05/2016] [Indexed: 12/14/2022]
Abstract
Essentials Research suggests that intensive treatment episodes may increase the risk to develop inhibitors. We performed an international nested case-control study with 298 non-severe hemophilia A patients. Surgery and a high dose of factor VIII concentrate were associated with increased inhibitor risk. Physicians need to review arguments for factor VIII dose and elective surgery extra critically. SUMMARY Background Inhibitor development is a major complication of treatment with factor VIII concentrates in hemophilia. Findings from studies among severe hemophilia A patients suggest that intensive treatment episodes increase the risk of developing inhibitors. Objectives We set out to assess whether intensive treatment is also associated with an increased risk of inhibitor development among non-severe hemophilia A patients. Patients/Methods We performed a nested case-control study. A total of 75 inhibitor patients (cases) and 223 control patients were selected from 2709 non-severe hemophilia A patients (FVIII:C, 2-40%) of the INSIGHT cohort study. Cases and controls were matched for date of birth and cumulative number of exposure days (EDs) to FVIII concentrates. Conditional logistic regression was used to calculate both unadjusted and adjusted odds ratios (aOR); the latter were adjusted for a priori specified confounders. Results Peak treatment of 5 or 10 consecutive EDs did not increase inhibitor risk (aOR, 1.0; 95% confidence interval (CI), 0.4-2.5; and aOR, 1.8; CI, 0.6-5.5, respectively). Both surgical intervention (aOR, 4.2; CI, 1.7-10.3) and a high mean dose (> 45 IU kg-1 /ED) of FVIII concentrate (aOR, 7.5; CI, 1.6-35.6) were associated with an increased inhibitor risk. Conclusions Our findings suggest that high-dose FVIII treatment and surgery increase the risk of inhibitor development in non-severe hemophilia A. Together with the notion that non-severe hemophilia A patients are at a lifelong risk of inhibitor development, we suggest that in the future physicians will review the arguments for the FVIII dose and elective surgery extra critically.
Collapse
Affiliation(s)
- A S van Velzen
- Department of Pediatric Hematology, Immunology and Infectious Diseases, Emma Children's Hospital, Academic Medical Center, Amsterdam, the Netherlands
| | - C L Eckhardt
- Department of Pediatric Hematology, Immunology and Infectious Diseases, Emma Children's Hospital, Academic Medical Center, Amsterdam, the Netherlands
| | - M Peters
- Department of Pediatric Hematology, Immunology and Infectious Diseases, Emma Children's Hospital, Academic Medical Center, Amsterdam, the Netherlands
| | - F W G Leebeek
- Department of Hematology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | | | - C Hermans
- Haemostasis and Thrombosis Unit, Division of Haematology, St-Luc University Hospital, Brussels, Belgium
| | - R Keenan
- Liverpool Paediatric Haemophilia Centre, Haematology Treatment Centre, Alderhey Childrens Hospital, Liverpool, UK
| | - J Astermark
- Centre for Thrombosis and Haemostasis, Lund University, Skåne University Hospital Malmö, Malmo, Sweden
| | - C Male
- Universitätsklinik für Kinder- und Jugendheilkunde, Medical University of Vienna, Vienna, Austria
| | - K Peerlinck
- Department of Vascular Medicine and Haemostasis, University of Leuven, Leuven, Belgium
| | - S le Cessie
- Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, the Netherlands
| | - J G van der Bom
- Center for Clinical Transfusion Research, Sanquin Research and Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, the Netherlands
| | - K Fijnvandraat
- Department of Pediatric Hematology, Immunology and Infectious Diseases, Emma Children's Hospital, Academic Medical Center, Amsterdam, the Netherlands
| |
Collapse
|
26
|
Loomans JI, Eckhardt CL, Reitter-Pfoertner SE, Holmström M, van Gorkom BL, Leebeek FWG, Santoro C, Haya S, Meijer K, Nijziel MR, van der Bom JG, Fijnvandraat K. Mortality caused by intracranial bleeding in non-severe hemophilia A patients. J Thromb Haemost 2017; 15:1115-1122. [PMID: 28374963 DOI: 10.1111/jth.13693] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [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: 12/21/2016] [Indexed: 11/26/2022]
Abstract
Essentials Data on bleeding-related causes of death in non-severe hemophilia A (HA) patients are scarce. Such data may provide new insights into areas of care that can be improved. Non-severe HA patients have an increased risk of dying from intracranial bleeding. This demonstrates the need for specialized care for non-severe HA patients. SUMMARY Background Non-severe hemophilia (factor VIII concentration [FVIII:C] of 2-40 IU dL-1 ) is characterized by a milder bleeding phenotype than severe hemophilia A. However, some patients with non-severe hemophilia A suffer from severe bleeding complications that may result in death. Data on bleeding-related causes of death, such as fatal intracranial bleeding, in non-severe patients are scarce. Such data may provide new insights into areas of care that can be improved. Aims To describe mortality rates, risk factors and comorbidities associated with fatal intracranial bleeding in non-severe hemophilia A patients. Methods We analyzed data from the INSIGHT study, an international cohort study of all non-severe hemophilia A patients treated with FVIII concentrates during the observation period between 1980 and 2010 in 34 participating centers across Europe and Australia. Clinical data and vital status were collected from 2709 patients. We report the standardized mortality rate for patients who suffered from fatal intracranial bleeding, using a general European male population as a control population. Results Twelve per cent of the 148 deceased patients in our cohort of 2709 patients died from intracranial bleeding. The mortality rate between 1996 and 2010 for all ages was 3.5-fold higher than that in the general population (95% confidence interval [CI] 2.0-5.8). Patients who died from intracranial bleeding mostly presented with mild hemophilia without clear comorbidities. Conclusion Non-severe hemophilia A patients have an increased risk of dying from intracranial bleeding in comparison with the general population. This demonstrates the need for specialized care for non-severe hemophilia A patients.
Collapse
Affiliation(s)
- J I Loomans
- Pediatric Hematology, Academic Medical Center, Amsterdam, the Netherlands
| | - C L Eckhardt
- Pediatric Hematology, Academic Medical Center, Amsterdam, the Netherlands
| | | | - M Holmström
- Karolinska University Hospital, Stockholm, Sweden
| | | | - F W G Leebeek
- Erasmus University Medical Center, Rotterdam, the Netherlands
| | - C Santoro
- Sapienza University of Rome, Rome, Italy
| | - S Haya
- University Hospital la Fe, Valencia, Spain
| | - K Meijer
- Hematology Department, University Medical Center Groningen, Groningen, the Netherlands
| | - M R Nijziel
- Radboud University Nijmegen Medical Center, Nijmegen, the Netherlands
| | - J G van der Bom
- Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, the Netherlands
| | - K Fijnvandraat
- Pediatric Hematology, Academic Medical Center, Amsterdam, the Netherlands
- Department of Plasma Proteins, Sanquin Research, Amsterdam, the Netherlands
| |
Collapse
|
27
|
Limperg P, Haverman L, Beijlevelt M, van der Pot M, Zaal G, de Boer W, Fijnvandraat K, Peters M, Grootenhuis MA. Psychosocial care for children with haemophilia and their parents in the Netherlands. Haemophilia 2017; 23:362-369. [DOI: 10.1111/hae.13186] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/08/2017] [Indexed: 11/30/2022]
Affiliation(s)
- P.F. Limperg
- Psychosocial Department; Emma Children's Hospital; Academic Medical Centre (AMC); Amsterdam The Netherlands
- Department of Pediatric-Hematology; Emma Children's Hospital; Academic Medical Centre (AMC); Amsterdam The Netherlands
- Hemophilia Comprehensive Care Treatment Centre; Academic Medical Centre (AMC); Amsterdam The Netherlands
| | - L. Haverman
- Psychosocial Department; Emma Children's Hospital; Academic Medical Centre (AMC); Amsterdam The Netherlands
- Department of Pediatric-Hematology; Emma Children's Hospital; Academic Medical Centre (AMC); Amsterdam The Netherlands
- Hemophilia Comprehensive Care Treatment Centre; Academic Medical Centre (AMC); Amsterdam The Netherlands
| | - M. Beijlevelt
- Department of Pediatric-Hematology; Emma Children's Hospital; Academic Medical Centre (AMC); Amsterdam The Netherlands
- Hemophilia Comprehensive Care Treatment Centre; Academic Medical Centre (AMC); Amsterdam The Netherlands
| | - M. van der Pot
- Department of Pediatric-Hematology; Emma Children's Hospital; Academic Medical Centre (AMC); Amsterdam The Netherlands
- Hemophilia Comprehensive Care Treatment Centre; Academic Medical Centre (AMC); Amsterdam The Netherlands
| | - G. Zaal
- Department of Pediatric-Hematology; Emma Children's Hospital; Academic Medical Centre (AMC); Amsterdam The Netherlands
- Hemophilia Comprehensive Care Treatment Centre; Academic Medical Centre (AMC); Amsterdam The Netherlands
| | - W.A. de Boer
- Department of Pediatric-Hematology; Emma Children's Hospital; Academic Medical Centre (AMC); Amsterdam The Netherlands
- Hemophilia Comprehensive Care Treatment Centre; Academic Medical Centre (AMC); Amsterdam The Netherlands
| | - K. Fijnvandraat
- Department of Pediatric-Hematology; Emma Children's Hospital; Academic Medical Centre (AMC); Amsterdam The Netherlands
- Hemophilia Comprehensive Care Treatment Centre; Academic Medical Centre (AMC); Amsterdam The Netherlands
| | - M. Peters
- Department of Pediatric-Hematology; Emma Children's Hospital; Academic Medical Centre (AMC); Amsterdam The Netherlands
- Hemophilia Comprehensive Care Treatment Centre; Academic Medical Centre (AMC); Amsterdam The Netherlands
| | - M. A. Grootenhuis
- Psychosocial Department; Emma Children's Hospital; Academic Medical Centre (AMC); Amsterdam The Netherlands
| |
Collapse
|
28
|
Loomans JI, van Velzen AS, Eckhardt CL, Peters M, Mäkipernaa A, Holmstrom M, Brons PP, Dors N, Haya S, Voorberg J, van der Bom JG, Fijnvandraat K. Variation in baseline factor VIII concentration in a retrospective cohort of mild/moderate hemophilia A patients carrying identical F8 mutations. J Thromb Haemost 2017; 15:246-254. [PMID: 27943580 DOI: 10.1111/jth.13581] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [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: 06/01/2016] [Accepted: 11/14/2016] [Indexed: 02/05/2023]
Abstract
Essentials Factor VIII levels vary in mild and moderate hemophilia A (MHA) patients with the same mutation. We aimed to estimate the variation and determinants of factor VIII levels among MHA patients. Age and genotype explain 59% of the observed inter-individual variation in factor VIII levels. Intra-individual variation accounted for 45% of the variation in the three largest mutation groups. SUMMARY Background The bleeding phenotype in patients with mild/moderate hemophilia A (MHA) is inversely associated with the residual plasma concentration of factor VIII (FVIII:C). Within a group of patients with the same F8 missense mutation, baseline FVIII:C may vary, because, in healthy individuals, von Willebrand factor (VWF) levels, ABO blood group and age are also known to influence baseline FVIII:C. Our understanding of the pathophysiologic process of the causative genetic event leading to reduced baseline FVIII:C in MHA patients is still limited. Objectives To estimate the variation and determinants of baseline FVIII:C among MHA patients with the same F8 missense mutation. Methods Three hundred and forty-six patients carrying mutations that were present in at least 10 patients in the cohort were selected from the INSIGHT and the RISE studies, which are cohort studies including data of 3534 MHA patients from Europe, Canada, and Australia. Baseline FVIII:C was measured with a one-stage clotting assay. We used Levene's test, univariate and multivariate linear regression, and mixed-model analyses. Results For 59% of patients, the observed variation in baseline FVIII:C was explained by age and genotype. Compared to FVIII:C in patients with Arg612Cys, FVIII:C was significantly different in patients with eight other F8 missense mutations. Intra-individual variation explained 45% of the observed variance in baseline FVIII:C among patients with the same mutation. Conclusion Our results indicate that baseline FVIII:C levels are not exclusively determined by F8 genotype in MHA patients. Insights into other factors may provide potential novel targets for the treatment of MHA.
Collapse
Affiliation(s)
- J I Loomans
- Department of Pediatric Hematology, Emma Children's Hospital, Amsterdam, the Netherlands
| | - A S van Velzen
- Department of Pediatric Hematology, Emma Children's Hospital, Amsterdam, the Netherlands
| | - C L Eckhardt
- Department of Pediatric Hematology, Emma Children's Hospital, Amsterdam, the Netherlands
- Department of Vascular Medicine, Academic Medical Center, Amsterdam, the Netherlands
| | - M Peters
- Department of Pediatric Hematology, Emma Children's Hospital, Amsterdam, the Netherlands
| | - A Mäkipernaa
- Children's Hospital and Hematology, Comprehensive Cancer Center, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - M Holmstrom
- Coagulation Unit, Hematology Center, Karolinska University Hospital and Department of Medicine Karolinska Inisitutet, Stockholm, Sweden
| | - P P Brons
- Radboud University Nijmegen Medical Center, Nijmegen, the Netherlands
| | - N Dors
- Catharina Hospital, Eindhoven, the Netherlands
| | - S Haya
- University Hospital la Fe, Valencia, Spain
| | - J Voorberg
- Department of Plasma Proteins, Sanquin-AMC Landsteiner Laboratory, Amsterdam, the Netherlands
| | - J G van der Bom
- Leiden University Hospital, Leiden, the Netherlands
- Sanquin Research, Leiden, the Netherlands
| | - K Fijnvandraat
- Department of Pediatric Hematology, Emma Children's Hospital, Amsterdam, the Netherlands
- Department of Plasma Proteins, Sanquin-AMC Landsteiner Laboratory, Amsterdam, the Netherlands
| |
Collapse
|
29
|
Fustolo-Gunnink SF, Vlug RD, Smits-Wintjens VEHJ, Heckman EJ, te Pas AB, Fijnvandraat K, Lopriore E. Early-Onset Thrombocytopenia in Small-For-Gestational-Age Neonates: A Retrospective Cohort Study. PLoS One 2016; 11:e0154853. [PMID: 27177157 PMCID: PMC4866768 DOI: 10.1371/journal.pone.0154853] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2015] [Accepted: 04/20/2016] [Indexed: 11/18/2022] Open
Abstract
Thrombocytopenia is a common finding in small for gestational age (SGA) neonates and is thought to result from a unique pathophysiologic mechanism related to chronic intrauterine hypoxia. Our objective was to estimate the incidence and severity of early-onset thrombocytopenia in SGA neonates, and to identify risk factors for thrombocytopenia. We performed a retrospective cohort study of all consecutive SGA neonates admitted to our ward and a control group of appropriate for gestational age (AGA) neonates matched for gestational age at birth. Main outcome measures were incidence and severity of thrombocytopenia, hematological and clinical risk factors for thrombocytopenia, and bleeding. A total of 330 SGA and 330 AGA neonates were included, with a mean gestational age at birth of 32.9 ± 4 weeks. Thrombocytopenia (<150x109/L) was found in 53% (176/329) of SGA neonates and 20% (66/330) of AGA neonates (relative risk (RR) 2.7, 95% confidence interval (CI) [2.1, 3.4]). Severe thrombocytopenia (21-50x109/L) occurred in 25 neonates (8%) in the SGA and 2 neonates (1%) in the AGA group (RR 12.5, 95% CI [3.0, 52.5]). Platelet counts <20x109/L were not recorded. Within the SGA group, lower gestational age at birth (p = <0.01) and erythroblastosis (p<0.01) were independently associated with a decrease in platelet count. Platelet count was positively correlated with birth weight centiles. In conclusion, early-onset thrombocytopenia is present in over 50% of SGA neonates and occurs 2.7 times as often as in AGA neonates. Thrombocytopenia is seldom severe and is independently associated with lower gestational age at birth and erythroblastosis.
Collapse
Affiliation(s)
- S. F. Fustolo-Gunnink
- Sanquin Blood Supply, Clinical Transfusion Research, Leiden, Zuid-Holland, The Netherlands
- Academic Medical Center, Pediatric hematology, Amsterdam, Noord-Holland, The Netherlands
- * E-mail:
| | - R. D. Vlug
- Division of Neonatology, Department of Pediatrics, Leiden University Medical Center, Leiden, The Netherlands
| | - V. E. H. J. Smits-Wintjens
- Division of Neonatology, Department of Pediatrics, Leiden University Medical Center, Leiden, The Netherlands
| | - E. J. Heckman
- Division of Neonatology, Department of Pediatrics, Leiden University Medical Center, Leiden, The Netherlands
| | - A. B. te Pas
- Division of Neonatology, Department of Pediatrics, Leiden University Medical Center, Leiden, The Netherlands
| | - K. Fijnvandraat
- Academic Medical Center, Pediatric hematology, Amsterdam, Noord-Holland, The Netherlands
| | - E. Lopriore
- Division of Neonatology, Department of Pediatrics, Leiden University Medical Center, Leiden, The Netherlands
| |
Collapse
|
30
|
Hazendonk HCAM, Lock J, Mathôt RAA, Meijer K, Peters M, Laros-van Gorkom BAP, van der Meer FJM, Driessens MHE, Leebeek FWG, Fijnvandraat K, Cnossen MH. Perioperative treatment of hemophilia A patients: blood group O patients are at risk of bleeding complications. J Thromb Haemost 2016; 14:468-78. [PMID: 26714028 DOI: 10.1111/jth.13242] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [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: 07/10/2015] [Accepted: 11/30/2015] [Indexed: 12/19/2022]
Abstract
UNLABELLED ESSENTIALS: Targeting of factor VIII values is a challenge during perioperative replacement therapy in hemophilia. This study aims to identify the extent and predictors of factor VIII underdosing and overdosing. Blood group O predicts underdosing and is associated with perioperative bleeding. To increase quality of care and cost-effectiveness of treatment, refining of dosing is obligatory. SUMMARY BACKGROUND Perioperative administration of factor VIII (FVIII) concentrate in hemophilia A may result in both underdosing and overdosing, leading to respectively a risk of bleeding complications and unnecessary costs. OBJECTIVES This retrospective observational study aims to identify the extent and predictors of underdosing and overdosing in perioperative hemophilia A patients (FVIII levels < 0.05 IU mL(-1)). PATIENTS AND METHODS One hundred nineteen patients undergoing 198 elective, minor, or major surgical procedures were included (median age 40 years, median body weight 75 kg). Perioperative management was evaluated by quantification of perioperative infusion of FVIII concentrate and achieved FVIII levels. Predictors of underdosing and (excessive) overdosing were analyzed by logistic regression analysis. Excessive overdosing was defined as upper target level plus ≥ 0.20 IU mL(-1). RESULTS Depending on postoperative day, 7-45% of achieved FVIII levels were under and 33-75% were above predefined target ranges as stated by national guidelines. A potential reduction of FVIII consumption of 44% would have been attained if FVIII levels had been maintained within target ranges. Blood group O and major surgery were predictive of underdosing (odds ratio [OR] 6.3, 95% confidence interval [CI] 2.7-14.9; OR 3.3, 95% CI 1.4-7.9). Blood group O patients had more bleeding complications in comparison to patients with blood group non-O (OR 2.02, 95% CI 1.00-4.09). Patients with blood group non-O were at higher risk of overdosing (OR 1.5, 95% CI 1.1-1.9). Additionally, patients treated with bolus infusions were at higher risk of excessive overdosing (OR 1.8, 95% CI 1.3-2.4). CONCLUSION Quality of care and cost-effectiveness can be improved by refining of dosing strategies based on individual patient characteristics such as blood group and mode of infusion.
Collapse
Affiliation(s)
- H C A M Hazendonk
- Department of Pediatric Hematology, Erasmus University Medical Center - Sophia Children's Hospital Rotterdam, Rotterdam, the Netherlands
| | - J Lock
- Department of Pediatric Hematology, Erasmus University Medical Center - Sophia Children's Hospital Rotterdam, Rotterdam, the Netherlands
| | - R A A Mathôt
- Hospital Pharmacy - Clinical Pharmacology, Academic Medical Center Amsterdam, Amsterdam, the Netherlands
| | - K Meijer
- Department of Hematology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - M Peters
- Department of Pediatric Hematology, Academic Medical Center Amsterdam, Amsterdam, the Netherlands
| | | | - F J M van der Meer
- Department of Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, the Netherlands
| | - M H E Driessens
- Netherlands Hemophilia Patient Society (NVHP), Nijkerk, the Netherlands
| | - F W G Leebeek
- Department of Hematology, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - K Fijnvandraat
- Department of Pediatric Hematology, Academic Medical Center Amsterdam, Amsterdam, the Netherlands
| | - M H Cnossen
- Department of Pediatric Hematology, Erasmus University Medical Center - Sophia Children's Hospital Rotterdam, Rotterdam, the Netherlands
| |
Collapse
|
31
|
Lock J, de Bekker-Grob EW, Urhan G, Peters M, Meijer K, Brons P, van der Meer FJM, Driessens MHE, Collins PW, Fijnvandraat K, Leebeek FWG, Cnossen MH. Facilitating the implementation of pharmacokinetic-guided dosing of prophylaxis in haemophilia care by discrete choice experiment. Haemophilia 2015; 22:e1-e10. [DOI: 10.1111/hae.12851] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/20/2015] [Indexed: 01/31/2023]
Affiliation(s)
- J. Lock
- Department of Paediatric Haematology; Erasmus University Medical Centre - Sophia Children's Hospital; Rotterdam The Netherlands
| | - E. W. de Bekker-Grob
- Department of Public Health; Erasmus University Medical Centre; Rotterdam The Netherlands
| | - G. Urhan
- Department of Paediatric Haematology; Erasmus University Medical Centre - Sophia Children's Hospital; Rotterdam The Netherlands
| | - M. Peters
- Department of Paediatric Haematology; Academic Medical Centre; Amsterdam The Netherlands
| | - K. Meijer
- Department of Haematology; University Medical Centre Groningen; University of Groningen; Groningen The Netherlands
| | - P. Brons
- Department of Paediatric Haematology; Radboud university medical centre; Nijmegen The Netherlands
| | - F. J. M. van der Meer
- Department of Thrombosis and Haemostasis; Leiden University Medical Centre; Leiden The Netherlands
| | | | - P. W. Collins
- Arthur Bloom Haemophilia Centre; School of Medicine; Cardiff University; Cardiff UK
| | - K. Fijnvandraat
- Department of Paediatric Haematology; Academic Medical Centre; Amsterdam The Netherlands
| | - F. W. G. Leebeek
- Department of Haematology; Erasmus University Medical Centre; Rotterdam The Netherlands
| | - M. H. Cnossen
- Department of Paediatric Haematology; Erasmus University Medical Centre - Sophia Children's Hospital; Rotterdam The Netherlands
| | | |
Collapse
|
32
|
van Galen KPM, Meijer K, Vogely HC, Eikenboom J, Schutgens REG, Cnossen MH, Fijnvandraat K, van der Bom JG, Laros-van Gorkom BAP, Leebeek FWG, Mauser-Bunschoten EP. Joint surgery in von Willebrand disease: a multicentre cross-sectional study. Haemophilia 2015; 22:256-262. [DOI: 10.1111/hae.12834] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/31/2015] [Indexed: 02/07/2023]
Affiliation(s)
- K. P. M. van Galen
- Van Creveldkliniek; University Medical Center Utrecht; Utrecht The Netherlands
| | - K. Meijer
- Department of Haematology; University Medical Center Groningen; University of Groningen; Groningen The Netherlands
| | - H. C. Vogely
- Department of Orthopaedic Surgery; University Medical Center Utrecht; Utrecht The Netherlands
| | - J. Eikenboom
- Department of Thrombosis and Haemostasis and Einthoven Laboratory for Experimental Vascular Medicine; Leiden University Medical Center; Leiden The Netherlands
| | - R. E. G. Schutgens
- Van Creveldkliniek; University Medical Center Utrecht; Utrecht The Netherlands
| | - M. H. Cnossen
- Department of Paediatric Haematology; Erasmus University Medical Center-Sophia Children's Hospital; Rotterdam The Netherlands
| | - K. Fijnvandraat
- Department of Paediatric Haematology; Academisch Medisch Centrum; Emma Children's Hospital; Amsterdam The Netherlands
| | - J. G. van der Bom
- Jon J van Rood Center for Clinical Transfusion Medicine; Sanquin Research; Leiden The Netherlands
- Department of Clinical Epidemiology; Leiden University Medical Center; Leiden The Netherlands
| | | | - F. W. G. Leebeek
- Department of Haematology; Erasmus University Medical Center Rotterdam; Rotterdam The Netherlands
| | | | | |
Collapse
|
33
|
Eckhardt CL, Loomans JI, van Velzen AS, Peters M, Mauser-Bunschoten EP, Schwaab R, Mazzucconi MG, Tagliaferri A, Siegmund B, Reitter-Pfoertner SE, van der Bom JG, Fijnvandraat K. Inhibitor development and mortality in non-severe hemophilia A. J Thromb Haemost 2015; 13:1217-25. [PMID: 25912309 DOI: 10.1111/jth.12990] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [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: 01/06/2015] [Accepted: 03/24/2015] [Indexed: 11/30/2022]
Abstract
BACKGROUND The life expectancy of non-severe hemophilia A (HA) patients equals the life expectancy of the non-hemophilic population. However, data on the effect of inhibitor development on mortality and on hemophilia-related causes of death are scarce. The development of neutralizing factor VIII antibodies in non-severe HA patients may dramatically change their clinical outcome due to severe bleeding complications. OBJECTIVES We assessed the association between the occurrence of inhibitors and mortality in patients with non-severe HA. METHODS In this retrospective cohort study, clinical data and vital status were collected for 2709 non-severe HA patients (107 with inhibitors) who were treated between 1980 and 2011 in 34 European and Australian centers. Mortality rates for patients with and without inhibitors were compared. RESULTS During 64,200 patient-years of follow-up, 148 patients died (mortality rate, 2.30 per 1000 person-years; 95% confidence interval (CI), 1.96-2.70) at a median age of 64 years (interquartile range [IQR], 49-76). In 62 patients (42%) the cause of death was hemophilia related. Sixteen inhibitor patients died at a median age of 71 years (IQR, 60-81). In ten patients the inhibitor was present at time of death; seven of them died of severe bleeding complications. The all-cause mortality rate in inhibitor patients was > 5 times increased compared with that for those without inhibitors (age-adjusted mortality rate ratio, 5.6). CONCLUSION Inhibitor development in non-severe hemophilia is associated with increased mortality. High rates of hemophilia-related mortality in this study indicate that non-severe hemophilia is not mild at all and stress the importance of close follow-up for these patients.
Collapse
Affiliation(s)
- C L Eckhardt
- Department of Pediatric Hematology, Emma Children's Hospital, Academic Medical Center, Amsterdam, the Netherlands
| | - J I Loomans
- Department of Pediatric Hematology, Emma Children's Hospital, Academic Medical Center, Amsterdam, the Netherlands
| | - A S van Velzen
- Department of Pediatric Hematology, Emma Children's Hospital, Academic Medical Center, Amsterdam, the Netherlands
| | - M Peters
- Department of Pediatric Hematology, Emma Children's Hospital, Academic Medical Center, Amsterdam, the Netherlands
| | - E P Mauser-Bunschoten
- Department of Hematology, van Creveldkliniek, University Medical Center Utrecht, Utrecht, the Netherlands
| | - R Schwaab
- Institute of Experimental Haematology and Transfusion Medicine, University Clinic Bonn, Bonn, Germany
| | - M G Mazzucconi
- Department of Cellular Biotechnology and Hematology, Sapienza University of Rome, Rome, Italy
| | - A Tagliaferri
- Regional Reference Centre for Inherited Bleeding Disorders, University Hospital, Parma, Italy
| | - B Siegmund
- Institute for Thrombophilia and Haemostaseology, Raphaelsklinik, Munster, Germany
| | - S E Reitter-Pfoertner
- Clinical Division of Haematology and Haemostaseology, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | - J G van der Bom
- Center for Clinical Transfusion Research, Sanquin Research, Leiden, the Netherlands
- Jon J. van Rood Center for Clinical Transfusion Research, Leiden University Medical Center, Leiden, the Netherlands
- Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, the Netherlands
| | - K Fijnvandraat
- Department of Pediatric Hematology, Emma Children's Hospital, Academic Medical Center, Amsterdam, the Netherlands
| |
Collapse
|
34
|
Sanders YV, van der Bom JG, Isaacs A, Cnossen MH, de Maat MPM, Laros-van Gorkom BAP, Fijnvandraat K, Meijer K, van Duijn CM, Mauser-Bunschoten EP, Eikenboom J, Leebeek FWG. CLEC4M and STXBP5 gene variations contribute to von Willebrand factor level variation in von Willebrand disease. J Thromb Haemost 2015; 13:956-66. [PMID: 25832887 DOI: 10.1111/jth.12927] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [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: 07/30/2014] [Indexed: 12/01/2022]
Abstract
BACKGROUND von Willebrand factor (VWF) levels in healthy individuals are influenced by variations in genetic loci other than the VWF gene, whose contribution to VWF levels in patients with von Willebrand disease (VWD) is largely unknown. OBJECTIVES To investigate the association between single-nucleotide polymorphisms (SNPs), VWF levels, and bleeding phenotype. PATIENTS/METHODS In 364 type 1 VWD and 240 type 2 VWD patients from the nationwide cross-sectional 'Willebrand in The Netherlands' (WiN) study, we studied the association between eight SNPs in STXBP5, SCARA5, ABO, VWF, STAB2, STX2, TC2N, and CLEC4M, and VWF antigen (VWF:Ag), VWF activity (VWF:Act), and bleeding phenotype as assessed with the Tosetto bleeding score. RESULTS In type 1 patients, STXBP5 was associated with a lower VWF:Ag level (adjusted difference of -3.0 IU dL(-1) per allele; 95% confidence interval [CI] -6.0 to 0.1) and CLEC4M with both a lower VWF:Ag level (-4.3 IU dL(-1) per allele; 95% CI -7.9 to -0.6) and lower VWF:Act (-5.7 IU dL(-1) per allele; 95% CI -10.9 to -0.5). In type 2 patients, none of the SNPs was associated with VWF levels. None of the genetic variants was associated with bleeding score. CONCLUSIONS Genetic variations in STXBP5 and CLEC4M are associated with VWF level variation in type 1 VWD, but not in type 2 VWD. This study increases our understanding of the pathophysiology of VWD, and provides a further indication of the involvement of STXBP5 and CLEC4M in determining VWF levels in VWD.
Collapse
MESH Headings
- Adolescent
- Adult
- Aged
- Aged, 80 and over
- Biomarkers/blood
- Blood Coagulation/genetics
- Blood Coagulation Tests
- Cell Adhesion Molecules/genetics
- Child
- Child, Preschool
- Cross-Sectional Studies
- Female
- Gene Frequency
- Genetic Association Studies
- Genetic Predisposition to Disease
- Hemorrhage/blood
- Hemorrhage/genetics
- Humans
- Infant
- Lectins, C-Type/genetics
- Male
- Middle Aged
- Molecular Diagnostic Techniques
- Nerve Tissue Proteins/genetics
- Netherlands
- Phenotype
- Polymorphism, Single Nucleotide
- R-SNARE Proteins/genetics
- Receptors, Cell Surface/genetics
- Risk Factors
- Young Adult
- von Willebrand Disease, Type 1/blood
- von Willebrand Disease, Type 1/diagnosis
- von Willebrand Disease, Type 1/genetics
- von Willebrand Disease, Type 2/blood
- von Willebrand Disease, Type 2/diagnosis
- von Willebrand Disease, Type 2/genetics
- von Willebrand Factor/analysis
Collapse
Affiliation(s)
- Y V Sanders
- Department of Hematology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - J G van der Bom
- Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, The Netherlands
- Jon J. van Rood Center for Clinical Transfusion Medicine, Sanquin Research, Leiden, The Netherlands
| | - A Isaacs
- Genetic Epidemiology Unit, Department of Epidemiology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - M H Cnossen
- Department of Pediatric Hematology, Erasmus University Medical Center/Sophia Children's Hospital, Rotterdam, The Netherlands
| | - M P M de Maat
- Department of Hematology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | | | - K Fijnvandraat
- Department of Pediatric Hematology, Emma Children's Hospital, Academic Medical Center, Amsterdam, The Netherlands
| | - K Meijer
- Department of Hematology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - C M van Duijn
- Genetic Epidemiology Unit, Department of Epidemiology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - E P Mauser-Bunschoten
- van Creveldkliniek/Department of Hematology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - J Eikenboom
- Department of Thrombosis and Hemostasis, Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, Leiden, the Netherlands
| | - F W G Leebeek
- Department of Hematology, Erasmus University Medical Center, Rotterdam, The Netherlands
| |
Collapse
|
35
|
van Galen KPM, Sanders YV, Vojinovic U, Eikenboom J, Cnossen MH, Schutgens REG, van der Bom JG, Fijnvandraat K, Laros-Van Gorkom BAP, Meijer K, Leebeek FWG, Mauser-Bunschoten EP. Joint bleeds in von Willebrand disease patients have significant impact on quality of life and joint integrity: a cross-sectional study. Haemophilia 2015; 21:e185-e192. [PMID: 25854528 DOI: 10.1111/hae.12670] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [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: 02/20/2015] [Indexed: 11/29/2022]
Abstract
BACKGROUND Joint bleeds (JB) are reported in a minority of patients with von Willebrand disease (VWD) but may lead to structural joint damage. Prevalence, severity and impact of JB in VWD are largely unknown. OBJECTIVES The aim of this study was to assess JB prevalence, onset, treatment and impact on health-related quality of life (HR-QoL) and joint integrity in moderate and severe VWD. METHODS In the Willebrand in the Netherlands study 804 moderate and severe VWD patients [von Willebrand factor (VWF) activity ≤30U dL(-1)] completed a questionnaire on occurrence, sites and consequences of JB. To analyse JB number, onset, treatment and impact on joint integrity we additionally performed a patient-control study on medical file data comparing patients with JB to age, gender, factor VIII (FVIII)- and VWF activity matched VWD patients without JB. RESULTS Of all VWD patients 23% (184/804) self-reported JB. These 184 patients reported joint damage more often (54% vs. 18%, P < 0.001) and had lower HR-QoL (SF36, P < 0.05) compared to VWD patients not reporting JB. Of 55 patients with available JB data, 65% had the first JB before age 16. These 55 patients used more clotting factor concentrate (CFC; median dose 43 vs. 0 IE FVIII kg(-1) year(-1) , P < 0.001), more often had X-ray joint damage (44% vs. 11%, P = 0.001] and chronic joint pain (44% vs. 18%, P = 0.008) compared to 55 control VWD patients without JB. CONCLUSION In conclusion, joint bleeds are reported by 23% of moderate and severe VWD patients, mostly start in childhood, are associated with more CFC use, joint pain, lower HR-QoL and significantly more radiological and self-reported joint damage.
Collapse
Affiliation(s)
- K P M van Galen
- Department of Van Creveldkliniek, University Medical Center Utrecht, Utrecht, The Netherlands
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Eckhardt CL, Astermark J, Nagelkerke SQ, Geissler J, Tanck MWT, Peters M, Fijnvandraat K, Kuijpers TW. The Fc gamma receptor IIa R131H polymorphism is associated with inhibitor development in severe hemophilia A. J Thromb Haemost 2014; 12:1294-301. [PMID: 24916518 DOI: 10.1111/jth.12631] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [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: 02/13/2014] [Accepted: 05/29/2014] [Indexed: 12/21/2022]
Abstract
BACKGROUND The development of factor (F) VIII neutralizing alloantibodies (inhibitors) is a major complication of treatment with FVIII concentrates in hemophilia A and the etiology is still poorly understood. The low-affinity Fc gamma receptors (FcγR), which are expressed on immune cells, provide an important link between cellular and humoral immunity by interacting with IgG subtypes. Genetic variations of the genes encoding FcγRs (FCGR genes) have been associated with susceptibility to infectious and autoimmune diseases. OBJECTIVES The aim of this study was to investigate the association between genetic variation of FCGR and inhibitor development in severe hemophilia A. PATIENTS/METHODS In this case-control study samples of 85 severe hemophilia A patients (siblings from 44 families) were included. Single nucleotide polymorphisms and copy number variation of the FCGR2 and FCGR3 gene cluster were studied in an FCGR-specific multiplex ligation-dependent probe amplification assay. Frequencies were compared in a generalized estimating equation regression model. RESULTS Thirty-six patients (42%) had a positive history of inhibitor development. The polymorphism 131R > H in the FCGR2A gene was associated with an increased risk of inhibitor development (odds ratio [OR] per H-allele, 1.8; 95% confidence interval [CI], 1.1-2.9). This association persisted in 29 patients with high titer inhibitors (OR per H-allele, 1.9; 95% CI, 1.2-3.2) and in 44 patients with the F8 intron 22 inversion (OR per H-allele, 2.6; 95% CI, 1.1-6.6). CONCLUSIONS Hemophilia A patients with the HH genotype of the FCGR2A polymorphism 131R > H have a more than 3-fold increased risk of inhibitor development compared with patients with the RR genotype.
Collapse
Affiliation(s)
- C L Eckhardt
- Department of Pediatric Hematology, Immunology and Infectious Diseases, Academic Medical Center, Amsterdam, the Netherlands
| | | | | | | | | | | | | | | |
Collapse
|
37
|
Sanders YV, Giezenaar MA, Laros-van Gorkom BAP, Meijer K, van der Bom JG, Cnossen MH, Nijziel MR, Ypma PF, Fijnvandraat K, Eikenboom J, Mauser-Bunschoten EP, Leebeek FWG. von Willebrand disease and aging: an evolving phenotype. J Thromb Haemost 2014; 12:1066-75. [PMID: 24750783 DOI: 10.1111/jth.12586] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [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: 12/18/2013] [Accepted: 04/14/2014] [Indexed: 11/27/2022]
Abstract
BACKGROUND Because the number of elderly von Willebrand disease (VWD) patients is increasing, the pathophysiology of aging in VWD has become increasingly relevant. OBJECTIVES To assess age-related changes in von Willebrand factor (VWF) and factor VIII (FVIII) levels and to compare age-related differences in bleeding phenotype between elderly VWD patients and those < 65 years. We also studied co-morbidity in elderly patients. PATIENTS/METHODS We included VWD patients with VWF levels ≤ 30 U dL(-1) in the nationwide cross-sectional 'Willebrand in the Netherlands' (WiN-) study. Patients reported bleeding episodes and treatment of VWD in the year preceding inclusion and during life. This was compared between VWD patients older (n = 71) and younger (16-64 years, n = 593) than 65 years. In elderly patients, age-related changes in VWF and FVIII levels were studied longitudinally by including all historically measured levels. All medical records were examined for co-morbidity. RESULTS In elderly type 1 patients, a decade age increase was associated with a 3.5 U dL(-1) (95% CI, -0.6 to 7.6) VWF:Ag increase and 7.1 U dL(-1) (95% CI, 0.7 to 13.4) FVIII:C increase. This increase was not observed in elderly type 2 patients. Elderly type 2 patients reported significantly more bleeding symptoms in the year preceding inclusion than younger patients (16/27, 59% vs. 87/221, 39%; P = 0.048), which was not observed in type 1 VWD. CONCLUSIONS von Willebrand factor parameters and bleeding phenotype evolve with increasing age in VWD. VWF and FVIII levels increase with age in type 1 patients with no mitigation in bleeding phenotype. In type 2 patients VWF parameters do not increase with age and in these patients aging is accompanied by increased bleeding.
Collapse
Affiliation(s)
- Y V Sanders
- Department of Hematology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Affiliation(s)
- D. Lillicrap
- Department of Pathology and Molecular Medicine; Richardson Laboratory; Queen's University; Kingston ON Canada
| | - K. Fijnvandraat
- Hemophilia Treatment Center; Department of Pediatric Hematology; Academic Medical Center; University of Amsterdam; Amsterdam The Netherlands
| | - E. Santagostino
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Centre; IRCCS Ca’ Granda Foundation; Maggiore Hospital Policlinico; Milan Italy
| |
Collapse
|
39
|
Sanders YV, Eikenboom J, de Wee EM, van der Bom JG, Cnossen MH, Degenaar-Dujardin MEL, Fijnvandraat K, Kamphuisen PW, Laros-van Gorkom BAP, Meijer K, Mauser-Bunschoten EP, Leebeek FWG. Reduced prevalence of arterial thrombosis in von Willebrand disease. J Thromb Haemost 2013; 11:845-54. [PMID: 23506463 DOI: 10.1111/jth.12194] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [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: 10/12/2012] [Accepted: 03/07/2013] [Indexed: 11/27/2022]
Abstract
BACKGROUND High von Willebrand factor (VWF) levels are an established risk factor for arterial thrombosis, including coronary heart disease and ischemic stroke. It has been hypothesized that von Willebrand disease (VWD) patients are protected against arterial thrombosis; however, this has never been confirmed in clinical studies. OBJECTIVES To investigate the prevalence of arterial thrombosis in VWD patients relative to the general population. PATIENTS/METHODS We included 635 adult patients with VWF levels ≤ 30 U dL(-1) , aged 16-85 years, from the nationwide cross-sectional 'Willebrand in the Netherlands' (WiN) study and compared the prevalence of arterial thrombosis with two reference populations from the general Dutch population adjusted for age and sex as standardized morbidity ratios (SMRs). RESULTS Twenty-nine arterial thrombotic events occurred in 21 patients (3.3%). Five patients suffered an acute myocardial infarction and three an ischemic stroke. Unstable angina pectoris was recorded 12 times, transient ischemic attack nine. The prevalence of all arterial thrombotic events combined (acute myocardial infarction, ischemic stroke and coronary heart disease) was 39% and 63% lower than in the two reference populations. The prevalence of cardiovascular disease in VWD was lower than in the general population, SMR 0.60 (95% CI, 0.32-0.98) for coronary heart disease and SMR 0.40 (95% CI, 0.13-0.83) for acute myocardial infarction. For ischemic stroke the prevalence was 35-67% lower compared with two reference populations, SMR 0.65 (95% CI, 0.12-1.59) and 0.33 (95% CI, 0.06-0.80), respectively. CONCLUSIONS This is the first study showing that VWD patients have a reduced prevalence of arterial thrombosis and provides important insights into the role of VWF in the pathogenesis of arterial thrombosis.
Collapse
Affiliation(s)
- Y V Sanders
- Department of Hematology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Richards M, Lavigne Lissalde G, Combescure C, Batorova A, Dolan G, Fischer K, Klamroth R, Lambert T, Lopez-Fernandez M, Pérez R, Rocino A, Fijnvandraat K. Neonatal bleeding in haemophilia: a European cohort study. Br J Haematol 2011; 156:374-82. [DOI: 10.1111/j.1365-2141.2011.08967.x] [Citation(s) in RCA: 36] [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: 11/29/2022]
|
41
|
Eckhardt CL, van der Bom JG, van der Naald M, Peters M, Kamphuisen PW, Fijnvandraat K. Surgery and inhibitor development in hemophilia A: a systematic review. J Thromb Haemost 2011; 9:1948-58. [PMID: 21838755 DOI: 10.1111/j.1538-7836.2011.04467.x] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [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 Although the association between intensive treatment and the formation of inhibiting antibodies towards factor VIII (FVIII) in hemophilia A has been demonstrated, the contributing effect of surgery is presently unclear. The release of immunological danger signals resulting from tissue damage during surgery in the presence of a high FVIII antigen load may elicit the formation of FVIII antibodies. The aim of this systematic review was to investigate the role of surgery in the inhibitor risk associated with intensive treatment as compared with treatment for bleeding and prophylactic administration of FVIII. METHODS A comprehensive literature search was performed that identified four cohort studies and three case control studies, comprising 342 inhibitor patients among a total of 957 hemophilia A patients. RESULTS Intensive treatment increased the inhibitor risk, most pronounced with intensive treatment of ≥ 5 exposure days (EDs) compared with < 3 EDs (OR, 4.1; 95% confidence interval, 2.6-6.5). Pooled odds ratio for inhibitor development in severe hemophilia patients that received intensive treatment for surgery at first exposure was 4.1 (95% confidence interval, 2.0-8.4) compared with treatment for bleeding or prophylaxis. Information on continuous infusion, previously treated patients and non-severe hemophilia A was insufficient for valid meta-analyses. CONCLUSIONS Intensive FVIII treatment for surgery at first exposure leads to a higher inhibitor risk in hemophilia A patients compared with intensive treatment for bleeding.
Collapse
Affiliation(s)
- C L Eckhardt
- Department of Pediatric Hematology, Emma Children's Hospital, Academic Medical Center, Amsterdam, the Netherlands
| | | | | | | | | | | |
Collapse
|
42
|
De Wee EM, Klaij K, Eikenboom HCJ, Van Der Bom JG, Fijnvandraat K, Laros-Van Gorkom BAP, Mauser-Bunschoten EP, Meijer K, Goverde G, Van Der Linden PWG, Rijken DC, Leebeek FWG. Effect of fibrinolysis on bleeding phenotype in moderate and severe von Willebrand disease. Haemophilia 2011; 18:444-51. [PMID: 21910790 DOI: 10.1111/j.1365-2516.2011.02645.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Patients with von Willebrand disease (VWD), the most common inherited bleeding disorder, display large variation in bleeding tendency, which is not completely related to VWF levels. The cause of variability in clinical expression is largely unknown. The effect of plasma fibrinolytic capacity on bleeding tendency in VWD patients has not been investigated. We hypothesized that enhanced fibrinolysis may result in a more severe bleeding phenotype. Therefore, we measured the fibrinolytic potential in patients with moderate or severe VWD to investigate the contribution of fibrinolysis to the bleeding tendency. Fibrinolytic potential was measured as plasma clot lysis time (CLT) with and without addition of potato carboxypeptidase inhibitor (PCI) in 638 patients with moderate or severe VWD who participated in a nationwide multicentre cross-sectional study. Bleeding severity was measured using the Bleeding Score (BS).The CLTs were significantly longer, indicative of hypofibrinolysis, in men compared to women with VWD [106.2 (IQR 95.7-118.1) vs. 101.9 (IQR 92.8-114.0) min]. The CLTs prolonged with increasing age. No association was found between VWF or FVIII levels and CLT, or between VWF or FVIII levels and CLT(+PCI) . No association was observed for BS in a model with 10log-transformed CLT, adjusted for age, gender, VWF:Act and FVIII [b = 6.5 (95%CI -0.3 to 13.4)]. Our study showed that the plasma fibrinolytic potential does not influence bleeding tendency in VWD patients and therefore does not explain the variability in bleeding phenotype in VWD.
Collapse
Affiliation(s)
- E M De Wee
- Hematology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
43
|
van Dellen QM, Kreier F, de Kruiff CC, Boluyt N, Fijnvandraat K. Question 2. Does combined oral dexamethasone and epinephrine inhalation help infants with bronchiolitis to recover faster? Arch Dis Child 2011; 96:606-8. [PMID: 21562339 DOI: 10.1136/archdischild-2011-300067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Q M van Dellen
- Academic Medical Center, Emma Children's Hospital, Amsterdam, The Netherlands.
| | | | | | | | | |
Collapse
|
44
|
James EA, van Haren SD, Ettinger RA, Fijnvandraat K, Liberman JA, Kwok WW, Voorberg J, Pratt KP. T-cell responses in two unrelated hemophilia A inhibitor subjects include an epitope at the factor VIII R593C missense site. J Thromb Haemost 2011; 9:689-99. [PMID: 21251204 PMCID: PMC4323178 DOI: 10.1111/j.1538-7836.2011.04202.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [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] [Indexed: 11/29/2022]
Abstract
BACKGROUND Development of neutralizing anti-factor (F)VIII antibodies ('inhibitors') is a serious clinical problem in hemophilia A. Increased inhibitor risk has been associated with certain FVIII missense substitutions, including R593C in the A2 domain. OBJECTIVES The aim of the present study was to identify T-cell epitopes in FVIII and characterize T-cell responses in two unrelated hemophilia A subjects sharing F8-R593C and HLA-DRB1*1101 genotypes. We hypothesized that the hemophilic substitution site coincides with an important T-cell epitope. PATIENTS/METHODS The binding affinities of peptides for recombinant HLA-DR proteins were measured and compared with epitope prediction results. CD4+ T cells were stimulated using peptides and stained with fluorescent, peptide-loaded tetramers. RESULTS The inhibitor subjects, but not HLA-matched controls, had high-avidity HLA-DRB1*1101-restricted T-cell responses against FVIII(589-608), which contains the hemophilic missense site. Antigen-specific T cells secreted Th1 and Th2 cytokines and proliferated in response to FVIII and FVIII(592-603). FVIII(589-608) bound with physiologically relevant (micromolar) IC(50) values to recombinant DR0101, DR1101 and DR1501 proteins. CONCLUSIONS Hemophilia A patients with R593C missense substitutions and these HLA haplotypes had an increased incidence of inhibitors in our cohorts, supporting a paradigm in which presentation of FVIII epitopes containing the wild-type R593 influences inhibitor risk in this hemophilia A sub-population.
Collapse
Affiliation(s)
- E A James
- Benaroya Research Institute, Seattle, WA, USA
| | | | | | | | | | | | | | | |
Collapse
|
45
|
de Wee EM, Fijnvandraat K, de Goede-Bolder A, Mauser-Bunschoten EP, Eikenboom JCJ, Brons PP, Smiers FJ, Tamminga R, Oostenbrink R, Raat H, van der Bom JG, Leebeek FWG. Impact of von Willebrand disease on health-related quality of life in a pediatric population. J Thromb Haemost 2011; 9:502-9. [PMID: 21166992 DOI: 10.1111/j.1538-7836.2010.04175.x] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Von Willebrand disease (VWD) is the most frequent inherited bleeding disorder. Whether VWD is associated with health-related quality of life (HR-QoL) in children is unknown. OBJECTIVES This nationwide cross-sectional study measured HR-QoL in children with moderate or severe VWD. Our primary aim was to compare HR-QoL of VWD patients with that of reference populations. Additionally, we studied the impact of bleeding phenotype and VWD type on HR-QoL. METHODS HR-QoL was assessed with the Infant/Toddler QoL Questionnaire (0-5 years) and Child Health Questionnaire (6-15 years), and compared with reference population scores. Multivariate analysis was used to evaluate the influence of type of VWD and bleeding phenotype on HR-QoL scores. RESULTS Preschool children (0-5 years, n = 46) with VWD had lower HR-QoL scores for general health perceptions and parental time than reference populations. School children (6-15 years, n = 87) with VWD had lower scores for physical functioning, role functioning - emotional/behavioral, general health perceptions, and physical summary. Type of VWD was associated with HR-QoL in school children for bodily pain, general health perceptions, parental emotion, family activities, and physical summary. Scores of children with type 3 VWD were, on average, 15 points lower than those of the reference population on the above-mentioned scales. A more severe bleeding phenotype was associated with a lower score on 11/15 physical, emotional and social scales. CONCLUSION HR-QoL is lower in VWD children than in reference populations, in particular in school children. The negative impact of VWD is sensitive to type of VWD and bleeding phenotype; as well as physical scales, emotional and social scales are affected.
Collapse
Affiliation(s)
- E M de Wee
- Hematology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
46
|
de Wee E, Knol H, Mauser-Bunschoten E, van der Bom J, Degenaar-Dujardin M, Eikenboom J, Fijnvandraat K, de Goede-Bolder A, Laros-van Gorkom B, Ypma P, Zweegman S, Meijer K, Leebeek F. 0.11b Gynaecological and obstetric bleeding in moderate and severe Von Willebrand Disease. Thromb Res 2011. [DOI: 10.1016/s0049-3848(11)70055-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
47
|
van Helden PMW, Van Haren SD, Fijnvandraat K, van den Berg HM, Voorberg J. Factor VIII-specific B cell responses in haemophilia A patients with inhibitors. Haemophilia 2011; 16:35-43. [PMID: 20536984 DOI: 10.1111/j.1365-2516.2010.02215.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Development of inhibitory antibodies to factor VIII (FVIII) provides a major complication of replacement therapy in patients with haemophilia A. The risk of inhibitor formation is influenced by the underlying FVIII gene defect. Moreover, genetic determinants in the promoter region of IL-10 and TNFalpha have been linked to an increased risk of inhibitor development. Recent cohort-studies have provided evidence that the risk of inhibitor formation is linked to intensity of treatment. Eradication of FVIII inhibitors can be achieved by frequent infusion of high dosages of FVIII, so-called immune tolerance induction (ITI). Until now, the mechanisms involved in downmodulation of the immune response to FVIII during ITI have not been unraveled. Studies performed in an animal model for haemophilia A have suggested that elimination of FVIII-specific memory B cells by high dosages of FVIII contributes to the decline in FVIII inhibitor levels during ITI. Limited knowledge is available with respect to the development and persistence of FVIII-specific memory B cells in patients with haemophilia A. Two recent studies suggest that the frequency of peripheral FVIII-specific memory B cells in haemophilia A patients with inhibitors range from <0.01 to 0.40% of that of total IgG(+) B cells. No or very low frequencies of FVIII-specific memory B cells are observed in haemophilia A patients without inhibitors and in patients treated successfully by ITI. Possible implications of these findings are discussed in the context of currently available information on the role of antigen-specific memory B cells and long-living antibody producing plasma cells in humoral immunity.
Collapse
Affiliation(s)
- P M W van Helden
- Department of Plasma Proteins, Sanquin-AMC Landsteiner Laboratory and Van Creveld Laboratory, Amsterdam, The Netherlands
| | | | | | | | | |
Collapse
|
48
|
Peters M, Fijnvandraat K, van den Tweel XW, Garre FG, Giordano PC, van Wouwe JP, Pereira RR, Verkerk PH. One-third of the new paediatric patients with sickle cell disease in The Netherlands are immigrants and do not benefit from neonatal screening. Arch Dis Child 2010; 95:822-5. [PMID: 20576657 DOI: 10.1136/adc.2009.165290] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
OBJECTIVES To estimate the prevalence of children with sickle cell disease (SCD) in The Netherlands. To estimate the annual number of children newly diagnosed as having SCD and the proportion with diagnoses through neonatal screening To estimate the proportion of children with SCD receiving paediatric care in a comprehensive care setting. DESIGN Data from two sources, a survey of paediatric practices (n=107) and a laboratory database (n=20), were analysed by the capture-recapture method. PARTICIPANTS Children with SCD aged <18 years, either born before 2003 or newly diagnosed as having SCD between 2003 and 2007. MAIN OUTCOME MEASURES Prevalence, annual number of children newly diagnosed as having SCD, proportion of children with diagnoses through neonatal screening, proportion of children receiving paediatric care. RESULTS The prevalence of SCD in children living in The Netherlands on 1 January 2003 was 1:5152 (95% CI 1:4513 to 1:6015). In the next 4 years, the annual incidence was 1:2011 (95% CI 1:1743 to 1:2376). Nearly one-third (27%) of the children newly diagnosed as having SCD immigrated to The Netherlands after birth and would, therefore, be missed by the neonatal screening programme. Approximately 60% of all children with SCD were not reported by paediatricians. CONCLUSION The number of children with SCD in The Netherlands is much higher than previously estimated, and the majority of these children seem not to be reviewed regularly by a paediatrician. Children born abroad (27% of new cases) do not benefit from neonatal screening and are at high risk of life-threatening complications before SCD is diagnosed. As this introduces disparities in healthcare, the initiation of adequate measures should be considered.
Collapse
Affiliation(s)
- M Peters
- Department of Paediatric Haematology, Emma Children's Hospital, Academic Medical Center, Amsterdam, The Netherlands.
| | | | | | | | | | | | | | | |
Collapse
|
49
|
de Wee EM, Mauser-Bunschoten EP, Van Der Bom JG, Degenaar-Dujardin MEL, Eikenboom HCJ, Fijnvandraat K, de Goede-Bolder A, Laros-van Gorkom BAP, Meijer K, Raat H, Leebeek FWG. Health-related quality of life among adult patients with moderate and severe von Willebrand disease. J Thromb Haemost 2010; 8:1492-9. [PMID: 20345712 DOI: 10.1111/j.1538-7836.2010.03864.x] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.7] [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: 11/29/2022]
Abstract
SUMMARY BACKGROUND von Willebrand Disease (VWD) is the most frequent inherited bleeding disorder. It is unknown how this disorder affects quality of life. OBJECTIVES This nationwide multicenter cross-sectional study determined health-related quality of life (HR-QoL) in adult patients with moderate or severe VWD, and assessed whether bleeding severity and type of VWD are associated with HR-QoL. METHODS HR-QoL was assessed using the Short Form (SF)-36, and bleeding severity was measured using the Bleeding Score (BS). RESULTS Five hundred and nine patients participated; 192 males and 317 females, median age and range 45 (16-87) and 47 (16-84) years, respectively. Compared with the general population, HR-QoL in VWD patients was lower in the vitality domain (61 vs. 66 P < 0.001 for females, 67 vs. 72 P < 0.001 for males). Patients with the most severe bleeding phenotype (highest quartile BS, BS > 17) had a lower HR-QoL in eight domains than patients with a less severe bleeding type (lowest quartile BS, BS < 7) in the univariate analysis. After adjustment for age, gender, co-morbidity and employment/educational status, a more severe bleeding phenotype was associated with lower scores on the domains of physical functioning, role limitations due to physical functioning, bodily pain, general health, social functioning and physical component summary. CONCLUSIONS HR-QoL is lower in VWD patients compared with the general population. HR-QoL is strongly associated with bleeding phenotype.
Collapse
Affiliation(s)
- E M de Wee
- Hematology, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
50
|
Astermark J, Altisent C, Batorova A, Diniz MJ, Gringeri A, Holme PA, Karafoulidou A, Lopez-Fernández MF, Reipert BM, Rocino A, Schiavoni M, von Depka M, Windyga J, Fijnvandraat K. Non-genetic risk factors and the development of inhibitors in haemophilia: a comprehensive review and consensus report. Haemophilia 2010; 16:747-66. [PMID: 20398077 DOI: 10.1111/j.1365-2516.2010.02231.x] [Citation(s) in RCA: 108] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
SUMMARY The development of inhibitors to the infused factor in patients with haemophilia is a serious clinical problem. Recent evidence suggests that alongside the strong genetic contribution to inhibitor formation, there are a number of non-genetic factors--perceived by the immune system as danger signals--which promote formation of inhibitors. This study provides a comprehensive review of clinical studies relating to these factors and also presents a survey of opinion concerning their importance and clinical influence, conducted among the members of the European Haemophilia Treatment Standardisation Board (EHTSB). Taken together, this information highlights the lack of robust data concerning the influence of several non-genetic risk factors on inhibitor development, and an urgent need for prospective, well-conducted studies that adhere to recommendations made by the European Medicines Agency (EMEA) for studying inhibitors. Based on current literature, the EHTSB formulated consensus recommendations. It is desirable to minimize intensive treatment wherever possible, given the clinical situation. Prophylaxis should be offered to all children, although we still need to determine optimal dosing with respect to inhibitor development, and age for starting treatment. Vaccinations should be given subcutaneously and concomitant factor concentrate infusions avoided. According to the board, there is no evidence in the literature supporting suggestions that the type of concentrate influences inhibitor risk; but all patients should be monitored during their first exposures. Furthermore, there is no evidence to support an association between pregnancy-related issues, breast feeding and treatment-related factors (e.g. route of administration, or use of blood components) and inhibitor development.
Collapse
Affiliation(s)
- J Astermark
- Centre for Thrombosis and Haemostasis, Malmö University Hospital, Malmö, Sweden.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|