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Kuijlaars IAR, van der Net J, van Vulpen LFD, Driessens MHE, Schols SEM, Tan M, Gouw SC, Fischer K. Validation of the pedHAL short and HAL short in Dutch children and adults with haemophilia. Haemophilia 2022; 28:1007-1015. [PMID: 35905309 PMCID: PMC9796045 DOI: 10.1111/hae.14628] [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: 01/06/2022] [Revised: 06/29/2022] [Accepted: 07/01/2022] [Indexed: 12/30/2022]
Abstract
INTRODUCTION The Haemophilia Activities List (HAL) and paediatric HAL assess self-reported limitations in various daily activities. To reduce patient burden, shorter versions of the pedHAL (22 items) and HAL (18 items) have been developed. AIM This study aimed to determine the agreement between the pedHAL/HALfull and pedHAL/HALshort and construct validity and internal consistency of the pedHAL/ HALshort in persons with haemophilia (PWH). METHODS A cross-sectional secondary analysis of the Hemophilia in the Netherlands-6 national survey was performed. Adult and paediatric PWH completed the original pedHAL/HALfull , from which pedHAL/ HALshort were derived. Score differences between the original and short versions were calculated. Construct validity was studied by testing hypotheses regarding the relationship of the pedHAL/HALshort with the pedHAL/HALfull , Haemophilia & Exercise Project Test-Questionnaire (HEP-Test-Q), Canadian Haemophilia Outcomes-Kids' Life Assessment Tool (CHO-KLAT) and RAND 36-item Health Survey (RAND-36) (convergent/discriminant validity) as well as its ability to discriminate between subgroups (known-group validity). Internal consistency was assessed with Cronbach's α. RESULTS We included 113 children (median 10y [range 4-17], 53% severe haemophilia) and 691 adults (median 51y [range 18-88], 35% severe). Scores of the pedHAL/HALfull and pedHAL/HALshort were similar with high correlations (>0.9). Construct validity was confirmed for the pedHAL/HALshort . The HALshort was able to discriminate between different disease severities and ages. Cronbach's α of the pedHAL/HALshort was 0.95-0.97. CONCLUSION This study confirmed the agreement between the pedHAL/HALfull and the pedHAL/HALshort and the construct validity of the pedHAL/HALshort . The next step is to study construct validity of the pedHAL/HALshort when administered as short forms.
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Affiliation(s)
- Isolde A. R. Kuijlaars
- Center for Benign HaematologyThrombosis and HaemostasisVan CreveldkliniekUniversity Medical Center UtrechtUtrecht UniversityUtrechtthe Netherlands
| | - Janjaap van der Net
- Center for Child DevelopmentExercise and Physical LiteracyUniversity Medical Center UtrechtUtrecht UniversityUniversity Children's HospitalUtrechtthe Netherlands
| | - Lize F. D. van Vulpen
- Center for Benign HaematologyThrombosis and HaemostasisVan CreveldkliniekUniversity Medical Center UtrechtUtrecht UniversityUtrechtthe Netherlands
| | | | - Saskia E. M. Schols
- Department of HaematologyRadboud University Medical CenterNijmegenthe Netherlands,Haemophilia Treatment Center Nijmegen‐Eindhoven‐MaastrichtRadboud University Medical CenterNijmegenthe Netherlands
| | - Melanie Tan
- Department of Vascular MedicineAmsterdam Cardiovascular SciencesAmsterdam University Medical CentersUniversity of AmsterdamAmsterdamthe Netherlands
| | - Samantha C. Gouw
- Emma Children's HospitalAmsterdam UMCUniversity of AmsterdamPediatric HematologyAmsterdamthe Netherlands,Department of Clinical EpidemiologyLeiden University Medical CenterLeidenthe Netherlands
| | - Kathelijn Fischer
- Center for Benign HaematologyThrombosis and HaemostasisVan CreveldkliniekUniversity Medical Center UtrechtUtrecht UniversityUtrechtthe Netherlands
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2
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van Balen EC, Hassan S, Smit C, Driessens MHE, Beckers EAM, Coppens M, Eikenboom JC, Hooimeijer HL, Leebeek FWG, Mauser-Bunschoten EP, van Vulpen LFD, Schols SEM, Rosendaal FR, van der Bom JG, Gouw SC. Socioeconomic participation of persons with hemophilia: Results from the sixth hemophilia in the Netherlands study. Res Pract Thromb Haemost 2022; 6:e12741. [PMID: 36051543 PMCID: PMC9414229 DOI: 10.1002/rth2.12741] [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: 03/04/2022] [Revised: 04/11/2022] [Accepted: 04/22/2022] [Indexed: 11/12/2022] Open
Abstract
Background and objectives Treatment availability and comprehensive care have resulted in improved clinical outcomes for persons with hemophilia. Recent data on socioeconomic participation in the Netherlands are lacking. This study assessed participation in education, in the labor market, and social participation for persons with hemophilia compared with the general male population. Methods Dutch adults and children (5–75 years) of all hemophilia severities (n = 1009) participated in a questionnaire study that included sociodemographic, occupational, and educational variables. Clinical characteristics were extracted from electronic medical records. General population data were extracted from Statistics Netherlands. Social participation was assessed with the PROMIS Ability to Participate in Social Roles and Activities short form, with a minimal important difference set at 1.0. Results Data from 906 adults and children were analyzed. Participation in education of 20 to 24 year olds was 68% (general male population: 53%). Educational attainment was higher compared with Dutch males, especially for severe hemophilia. Absenteeism from school was more common than in the general population. The employment‐to‐population ratio and occupational disability were worse for severe hemophilia than in the general population (64.3% vs. 73.2% and 14.7% vs. 4.8%, respectively), but similar for nonsevere hemophilia. Unemployment was 5.4% (general male population: 3.4%). Absenteeism from work was less common (38% vs. 45.2%). Mean PROMIS score was similar to or higher than in the general population (54.2; SD 8.9 vs. 50; SD 10). Conclusion Socioeconomic participation of persons with nonsevere hemophilia was similar to the general male population. Some participation outcomes for persons with severe hemophilia were reduced.
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Affiliation(s)
- Erna C van Balen
- Department of Clinical Epidemiology Leiden University Medical Center The Netherlands
| | - Shermarke Hassan
- Department of Clinical Epidemiology Leiden University Medical Center The Netherlands
| | - Cees Smit
- Department of Clinical Epidemiology Leiden University Medical Center The Netherlands
| | | | - Erik A M Beckers
- Department of Hematology Maastricht University Medical Centre Maastricht The Netherlands
| | - Michiel Coppens
- Department of Vascular Medicine Amsterdam Cardiovascular Sciences Amsterdam UMC University of Amsterdam Amsterdam The Netherlands
| | - Jeroen C Eikenboom
- Department of Internal Medicine Division of Thrombosis and Hemostasis Leiden University Medical Center Leiden The Netherlands
| | - Hélène L Hooimeijer
- Department of Paediatrics University Medical Center Groningen Groningen The Netherlands
| | - Frank W G Leebeek
- Department of Hematology Erasmus University Medical Center Erasmus MC Rotterdam The Netherlands
| | - Evelien P Mauser-Bunschoten
- Center for Benign Haematology Thrombosis and Haemostasis Van Creveldkliniek University Medical Center Utrecht University Utrecht Utrecht The Netherlands
| | - Lize F D van Vulpen
- Center for Benign Haematology Thrombosis and Haemostasis Van Creveldkliniek University Medical Center Utrecht University Utrecht Utrecht The Netherlands
| | - Saskia E M Schols
- Department of Hematology Radboud university medical center Nijmegen The Netherlands.,Hemophilia Treatment Center Nijmegen-Eindhoven-Maastricht Nijmegen The Netherlands
| | - Frits R Rosendaal
- Department of Clinical Epidemiology Leiden University Medical Center The Netherlands
| | - Johanna G van der Bom
- Department of Clinical Epidemiology Leiden University Medical Center The Netherlands.,Center for Clinical Transfusion Research Sanquin Research/LUMC Leiden The Netherlands
| | - Samantha C Gouw
- Department of Clinical Epidemiology Leiden University Medical Center The Netherlands.,Pediatric Hematology Emma Children's Hospital Amsterdam UMC University of Amsterdam Amsterdam The Netherlands
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Punt MC, Teela L, Fischer K, Bloemenkamp KWM, Lely AT, Driessens MHE, Pekel L, Haverman L, van Galen KPM. A qualitative study on the experiences of haemophilia carriers before, during and after pregnancy. Haemophilia 2021; 27:e675-e682. [PMID: 34415675 PMCID: PMC9290707 DOI: 10.1111/hae.14396] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 07/25/2021] [Accepted: 08/04/2021] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Haemophilia carriers (HCs) face considerable haemostatic and psychological challenges during reproduction. AIM To explore the perspectives of HCs on healthcare in the current standard of haemophilia treatment during all reproductive phases: preconception, pregnancy, childbirth and the postpartum period. In addition, we examined the psychological impact of haemophilia during these phases. MATERIAL AND METHODS Focus group discussions (FGDs) and semi-structured interviews were conducted with HCs in January/February 2020 until data saturation was reached. All sessions were recorded, transcribed verbatim and analysed by two independent researchers through thematic content analysis using MAXQDA® software. The results were then discussed within the research team until consensus was reached. The constructed themes were shared with and reviewed by the HCs. RESULTS Fifteen HCs were included in three FGDs and four interviews. Five central themes were constructed: (1) communication by healthcare professionals, (2) lack of knowledge, (3) feeling insecure, (4) autonomy and (5) family experiences with haemophilia. Desired improvements in care mainly concerned counselling during preconception and pregnancy. This included timely access to comprehensive information during each consecutive phase, acceptance of HCs' choices by healthcare providers and healthcare tailored to the HC's family experience with haemophilia. CONCLUSIONS In recent years, haemophilia treatment has seen major advances, which could impact general and reproductive care for HCs. HCs indicated that reproductive care would benefit from a more personal and informative approach. Healthcare professionals could use these insights to adapt their consultations to meet the needs of these women when they are preparing for having children.
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Affiliation(s)
- Marieke C Punt
- Van Creveldkliniek, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Lorynn Teela
- Psychosocial Department, Emma Children's Hospital Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Kathelijn Fischer
- Van Creveldkliniek, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Kitty W M Bloemenkamp
- Department of Obstetrics, Birth Centre Wilhelmina's Children Hospital, Division Woman and Baby, Utrecht University, Utrecht, The Netherlands
| | - A Titia Lely
- Department of Obstetrics, Birth Centre Wilhelmina's Children Hospital, Division Woman and Baby, Utrecht University, Utrecht, The Netherlands
| | | | - Lynnda Pekel
- Dutch Society of Haemophilia Patients (NVHP), Nijkerk, The Netherlands
| | - Lotte Haverman
- Psychosocial Department, Emma Children's Hospital Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Karin P M van Galen
- Van Creveldkliniek, University Medical Center Utrecht, Utrecht, The Netherlands
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Hoefnagels JW, Fischer K, Bos RAT, Driessens MHE, Schrijvers LH. A tailored intervention for illness acceptance improves adherence and quality of life in adults with haemophilia using prophylaxis. Haemophilia 2021; 27:e434-e440. [PMID: 33960588 PMCID: PMC8360197 DOI: 10.1111/hae.14320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 02/03/2021] [Accepted: 04/09/2021] [Indexed: 11/27/2022]
Abstract
INTRODUCTION Adherence to prophylactic treatment (prophylaxis) in persons with haemophilia is challenging and has been reported at only ±50%. Acceptance problems are one of the main reasons for non-adherence in haemophilia. An evidence-based intervention was developed based on an acceptance and commitment therapy (ACT) approach. AIM To evaluate a tailored intervention focused on illness acceptance in adults with haemophilia who were prescribed prophylaxis. METHODS A pre-post study was executed in adults with haemophilia who were prescribed prophylaxis. A series of 8 2-hour group trainings were held, including 3-8 participants/series. Adherence (VERITAS-Pro, optimum 0), health-related quality of life (HRQoL, SF-36, optimum 100) and illness perception (BIPQ, optimum 0) were measured at start, after six months and 12 months and analysed using Wilcoxon signed-rank test. RESULTS Twenty-four patients (median age 47 years, range 27-74) were included. After 12 months, adherence improved in 68% of patients, quality of life in 48% and illness perception in 31%. Adherence (total score) improved from 35 to 25 (P<0.01). HRQoL showed clinically relevant improvement in domains of social-functioning (P = 0.04), role-emotional, physical-functioning, role-physical and bodily pain. Illness perception improved statistically significant on domains of affect (P = 0.01), concern (P = 0.01) and understanding (P = 0.04). Patients evaluated the training useful, an eye-opener, a personal enrichment and insightful. CONCLUSION The tailored group intervention resulted in significant improvement of adherence, quality of life and illness perception. Based on our current experience, we have implemented it in clinical practice and collaborate with the patient association to make it available for all Dutch people with haemophilia.
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Affiliation(s)
| | - Kathelijn Fischer
- Van CreveldkliniekUniversity Medical Center UtrechtUtrechtThe Netherlands
| | - Ruud A. T. Bos
- Van CreveldkliniekUniversity Medical Center UtrechtUtrechtThe Netherlands
| | | | - Liesbeth H. Schrijvers
- Institute for Nursing StudiesUtrecht University of Applied SciencesUtrechtThe Netherlands
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Hoefnagels JW, Fischer K, Bos RAT, Driessens MHE, Meijer SLA, Schutgens REG, Schrijvers LH. A feasibility study on two tailored interventions to improve adherence in adults with haemophilia. Pilot Feasibility Stud 2020; 6:189. [PMID: 33292771 PMCID: PMC7708110 DOI: 10.1186/s40814-020-00723-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 11/03/2020] [Indexed: 12/12/2022] Open
Abstract
INTRODUCTION Haemophilia is a congenital bleeding disorder mainly affecting males. To prevent bleeding, patients need to perform regular intravenous injections (prophylaxis) throughout life. Non-adherence often occurs. Problems with acceptance or self-management appear to be the main reasons for non-adherence in haemophilia. The aim of this study was to test the feasibility and effects of two interventions focussed on acceptance (face-to-face) and self-management (online). METHODS Patients with severe haemophilia and acceptance or self-management problems were eligible. The face-to-face group intervention was based on Acceptance and Commitment Therapy (ACT) (8 sessions/6 months, target N = 8 participants). The online intervention was based on a successful online programme in rheumatoid arthritis (5-8 modules/2 months, target N = 8). Both interventions were designed according to the MRC framework in collaboration with the patient society and experts. We compared adherence (VERITAS-Pro, optimum 0), quality of life (SF-36, optimum 100) and illness perception (BIPQ, optimum 0) before start (T0) and after 2 months (T2). Feasibility criteria were as follows: completion of training by > 50% of participants and ability to collect at least 80% of outcome parameters. RESULTS The face-to-face intervention was feasible (89% enrolment and recruitment, 100% retention). One hundred percent of the outcome parameters was collected. Results were promising: although adherence (VERITAS-Pro) was stable (from 64 to 62 points), quality of life (SF-36) showed a clinically relevant improvement (> 5 points) in five of eight domains. Illness perception (BIPQ) showed a clinically relevant increase from 47 to 39 points. Patient evaluation was positive. The online intervention, however, was infeasible: enrolment was only 20% (6/30). Only three patients signed informed consent (recruitment 10%), and none completed more than one module (retention 0%). Consequently, the online intervention was terminated. CONCLUSION The face-to-face acceptance intervention was considered feasible with promising results. Unfortunately, the online intervention was infeasible and therefore terminated. These findings suggest that adapting effective interventions to other settings does not guarantee success, despite the use of established methodology and patient participation. Population differences (only male participants, congenital disease) could be an explanation for failure of the online intervention in haemophilia despite success in rheumatoid arthritis. TRIAL REGISTRATION NL55883.041.16.
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Affiliation(s)
- J W Hoefnagels
- Division Internal Medicine and Dermatology, Van Creveldkliniek, University Medical Center Utrecht, PO Box 85500, 3508, GA, Utrecht, The Netherlands.
| | - K Fischer
- Division Internal Medicine and Dermatology, Van Creveldkliniek, University Medical Center Utrecht, PO Box 85500, 3508, GA, Utrecht, The Netherlands
| | - R A T Bos
- Division Internal Medicine and Dermatology, Van Creveldkliniek, University Medical Center Utrecht, PO Box 85500, 3508, GA, Utrecht, The Netherlands
| | - M H E Driessens
- Netherlands Haemophilia Patient Society (NVHP), Nijkerk, The Netherlands
| | - S L A Meijer
- Netherlands Haemophilia Patient Society (NVHP), Nijkerk, The Netherlands
| | - R E G Schutgens
- Division Internal Medicine and Dermatology, Van Creveldkliniek, University Medical Center Utrecht, PO Box 85500, 3508, GA, Utrecht, The Netherlands
| | - L H Schrijvers
- Division Internal Medicine and Dermatology, Van Creveldkliniek, University Medical Center Utrecht, PO Box 85500, 3508, GA, Utrecht, The Netherlands
- Utrecht University of Applied Sciences, Utrecht, The Netherlands
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6
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Punt MC, Aalders TH, Bloemenkamp KWM, Driessens MHE, Fischer K, Schrijvers MH, van Galen KPM. The experiences and attitudes of hemophilia carriers around pregnancy: A qualitative systematic review. J Thromb Haemost 2020; 18:1626-1636. [PMID: 32271985 PMCID: PMC7383726 DOI: 10.1111/jth.14825] [Citation(s) in RCA: 6] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 03/05/2020] [Accepted: 04/01/2020] [Indexed: 01/21/2023]
Abstract
BACKGROUND Hemophilia carriers (HCs) face specific psychosocial challenges related to pregnancy, caused by their inherited bleeding disorder. Optimal support from healthcare providers can only be realized by exploring medical and psychological healthcare requirements. OBJECTIVE To review all published evidence on the experiences and attitudes of HCs regarding reproductive decision-making, prenatal diagnosis, pregnancy, childbirth, and puerperium to provide an accessible overview of this information for health care providers. STUDY SELECTION Cochrane library, PubMed/MEDLINE, EMBASE, CINAHL, and PsycINFO were searched for original qualitative data. Two authors performed study selection, risk-of-bias assessment, data extraction, and data analysis through meta-summary. The extracted themes were discussed within the research team. FINDINGS Fifteen studies with an overall moderate quality were included. The following findings were identified: (a) Quality of life of family members with hemophilia influences reproductive decision-making; (b) Genetic counselling is generally considered useful; (c) The development of a specialized carrier clinic is considered valuable; (d) HCs describe prenatal diagnosis as beneficial yet psychosocially challenging; and (e) noninvasive prenatal diagnosis and preimplantation genetic diagnosis are predominantly considered beneficial. These findings are limited by the overall moderate quality of included studies and the possibly partly outdated results in the current era of hemophilia treatment. CONCLUSIONS Available qualitative literature on HCs around pregnancy focuses on genetic counselling and prenatal diagnosis. Future studies are needed on the experiences and needs of HCs through pregnancy and puerperium as well as in light of emerging hemophilia diagnosis and treatment options.
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Affiliation(s)
- Marieke C. Punt
- Van CreveldkliniekUniversity Medical Center UtrechtUniversity UtrechtUtrechtThe Netherlands
| | - Tanja H. Aalders
- Van CreveldkliniekUniversity Medical Center UtrechtUniversity UtrechtUtrechtThe Netherlands
| | - Kitty W. M. Bloemenkamp
- Department of ObstetricsBirth Centre Wilhelmina’s Children HospitalDivision Woman and BabyUniversity Medical Centre UtrechtUniversity of UtrechtUtrechtThe Netherlands
| | | | - Kathelijn Fischer
- Van CreveldkliniekUniversity Medical Center UtrechtUniversity UtrechtUtrechtThe Netherlands
| | - Marlies H. Schrijvers
- Van CreveldkliniekUniversity Medical Center UtrechtUniversity UtrechtUtrechtThe Netherlands
- Bachelor of NursingUniversity of Applied SciencesUtrechtThe Netherlands
| | - Karin P. M. van Galen
- Van CreveldkliniekUniversity Medical Center UtrechtUniversity UtrechtUtrechtThe Netherlands
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7
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Aurich B, Vermeulen E, Elie V, Driessens MHE, Kubiak C, Bonifazi D, Jacqz-Aigrain E. Informed consent for neonatal trials: practical points to consider and a check list. BMJ Paediatr Open 2020; 4:e000847. [PMID: 33437878 PMCID: PMC7778778 DOI: 10.1136/bmjpo-2020-000847] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 11/23/2020] [Accepted: 11/29/2020] [Indexed: 12/04/2022] Open
Abstract
Obtaining informed consent from parents of critically ill neonates can be challenging. The parental decision-making process is influenced by the severity of the child's condition, the benefit-risk balance, their emotional state and the quality of the relationship with the clinical team. Independent of local legislation, parents may prefer that consent is sought from both. Misconceptions about the absence of risks or unrealistic expectations about benefits should be openly addressed to avoid misunderstandings which may harm the relationship with the clinical team. Continuous consent can be sought where it is unclear whether the free choice of parental consent has been compromised. Obtaining informed consent is a dynamic process building on trusting relationships. It should include open and honest discussions about benefits and risks. Investigators may benefit from training in effective communication. Finally, involving parents in neonatal research including the development of the informed consent form and the process of obtaining consent should be considered standard practice.
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Affiliation(s)
- Beate Aurich
- Department of Paediatric Clinical Pharmacology and Pharmacogenetics, Robert Debré Hospital, 48 Boulevard Sérurier, Institut National de la Santé et de la Recherche Médicale (INSERM), Paris, France
| | - Eric Vermeulen
- Dutch patient association for rare and genetic diseases (VSOP), Soest, The Netherlands
| | - Valéry Elie
- Department of Paediatric Clinical Pharmacology and Pharmacogenetics, Robert Debré Hospital, 48 Boulevard Sérurier, Institut National de la Santé et de la Recherche Médicale (INSERM), Paris, France
| | | | - Christine Kubiak
- The European Clinical Research Infrastructure Network (ECRIN), 5-7 Rue Watt, Paris, France
| | - Donato Bonifazi
- Consorzio per le Valutazioni Biologiche e Farmacologiche, Via Nicolo Putignani, Bari, Italy.,TEDDY European Network of Excellence for Paediatric Research, Via Luigi Porta 14, Pavia, Italy
| | - Evelyne Jacqz-Aigrain
- Department of Paediatric Clinical Phramcology and Pharmacogenetics, Robert Debré Hospital, APHP, 48 Boulevard Sérurier, Paris, France.,Paris University, Paris, France
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Schütte LM, Cnossen MH, van Hest RM, Driessens MHE, Fijnvandraat K, Polinder S, Beckers EAM, Coppens M, Eikenboom J, Laros-van Gorkom BAP, Meijer K, Nieuwenhuizen L, Mauser-Bunschoten EP, Leebeek FWG, Mathôt RAA, Kruip MJHA. Desmopressin treatment combined with clotting factor VIII concentrates in patients with non-severe haemophilia A: protocol for a multicentre single-armed trial, the DAVID study. BMJ Open 2019; 9:e022719. [PMID: 31015264 PMCID: PMC6500101 DOI: 10.1136/bmjopen-2018-022719] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
INTRODUCTION Haemophilia A is an inherited bleeding disorder characterised by factor VIII (FVIII) deficiency. In patients with non-severe haemophilia A, surgery and bleeding are the main indications for treatment with FVIII concentrate. A recent study reported that standard dosing frequently results in FVIII levels (FVIII:C) below or above FVIII target ranges, leading to respectively a bleeding risk or excessive costs. In addition, FVIII concentrate treatment carries a risk of development of neutralising antibodies. An alternative is desmopressin, which releases endogenous FVIII and von Willebrand factor. In most patients with non-severe haemophilia A, desmopressin alone is not enough to achieve FVIII target levels during surgery or bleeding. We hypothesise that combined pharmacokinetic (PK)-guided administration of desmopressin and FVIII concentrate may improve dosing accuracy and reduces FVIII concentrate consumption. METHODS AND ANALYSIS In the DAVID study, 50 patients with non-severe haemophilia A (FVIII:C ≥0.01 IU/mL) with a bleeding episode or undergoing surgery will receive desmopressin and FVIII concentrate combination treatment. The necessary dose of FVIII concentrate to reach FVIII target levels after desmopressin administration will be calculated with a population PK model. The primary endpoint is the proportion of patients reaching FVIII target levels during the first 72 hours after start of the combination treatment. This approach was successfully tested in one pilot patient who received perioperative combination treatment. ETHICS AND DISSEMINATION The DAVID study was approved by the medical ethics committee of the Erasmus MC. Results of the study will be communicated trough publication in international scientific journals and presentation at (inter)national conferences. TRIAL REGISTRATION NUMBER NTR5383; Pre-results.
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Affiliation(s)
- Lisette M Schütte
- Department of Haematology, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Marjon H Cnossen
- Department of Paediatric Haematology, Erasmus University Medical Centre-Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Reinier M van Hest
- Department of Hospital Pharmacy-Clinical Pharmacology Unit, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | | | - Karin Fijnvandraat
- Department of Paediatric Haematology, Amsterdam UMC, Emma Children's Hospital, Amsterdam, The Netherlands
- Department of Plasma Proteins, Sanquin Research, Amsterdam, The Netherlands
| | - Suzanne Polinder
- Department of Public Health, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Erik A M Beckers
- Department of Haematology, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Michiel Coppens
- Department of Vascular Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Jeroen Eikenboom
- Department of Thrombosis and Haemostasis, Leids Universitair Medisch Centrum, Leiden, The Netherlands
| | | | - Karina Meijer
- Department of Haematology, Universitair Medisch Centrum Groningen, Groningen, The Netherlands
| | - Laurens Nieuwenhuizen
- Department of Haematology, Maxima Medical Centre, Eindhoven, Eindhoven, Noord-Brabant, The Netherlands
| | | | - Frank W G Leebeek
- Department of Haematology, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Ron A A Mathôt
- Department of Hospital Pharmacy-Clinical Pharmacology Unit, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Marieke J H A Kruip
- Department of Haematology, Erasmus University Medical Centre, Rotterdam, The Netherlands
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9
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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.
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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
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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.
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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
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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.
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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
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12
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Hazendonk HCAM, van Moort I, Fijnvandraat K, Kruip MJHA, Laros-van Gorkom BAP, van der Meer FJM, Meijer K, Peters M, Schutgens REG, Zwaan CM, Driessens MHE, Polinder S, Leebeek FWG, Mathôt RAA, Cnossen MH. The "OPTI-CLOT" trial. A randomised controlled trial on periOperative PharmacokineTIc-guided dosing of CLOTting factor concentrate in haemophilia A. Thromb Haemost 2015; 114:639-44. [PMID: 26062822 DOI: 10.1160/th14-11-0925] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [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: 11/10/2014] [Accepted: 03/28/2015] [Indexed: 01/19/2023]
Abstract
Haemophilia A is an X-linked inherited, rare bleeding disorder, caused by a deficiency of coagulation factor VIII (FVIII). Previous studies in prophylactic dosing have demonstrated that FVIII consumption can be significantly reduced by individualising dosing based on combined analysis of individual pharmacokinetic (PK) profiling and population PK data (Bayesian analysis). So far, no studies have been performed that address perioperative concentrate consumption using iterative PK-guided dosing based on a PK population model. The "OPTI-CLOT" trial is an open-label, prospective, multicentre randomised controlled superiority trial (RCT), aiming to detect a 25 % difference in perioperative FVIII concentrate consumption with iterative Bayesian PK-guided dosing in comparison to the standard dosing procedure. Sixty haemophilia A patients ≥ 12 years of age, with FVIII plasma levels ≤ 0.05 IUml(-1) will be included requiring FVIII replacement therapy administered either by continuous or bolus infusion for an elective, low or medium risk surgical procedure. The proposed study aims to investigate a novel perioperative iterative PK-guided dosing strategy, based on a recently constructed perioperative PK population model. This model will potentially decrease underdosing and overdosing of clotting factor concentrate and is expected to overall reduce FVIII consumption by minimally 25 %. Moreover, participating hospitals will gain experience with PK-guided dosing, facilitating future implementation of this intervention which is expected to optimise current care and reduce costs of treatment.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | - Marjon H Cnossen
- M. H. Cnossen, MD, PhD, Department of Paediatric Haematology, Erasmus University Medical Centre, Sophia Children's Hospital Rotterdam, P. O. Box 2040, 3000 CA Rotterdam, the Netherlands, E-mail:
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Abstract
Plexins are receptors for the repulsive axon guidance molecules semaphorins. Previously, we have shown that plexin-B1 binds activated Rac, but that clustering of plexin-B1 causes Rho activation, resulting in stress fiber formation. Using the yeast two-hybrid system, we found that the C-terminus of B plexins interacted directly with Rho-specific exchange factors, via their PDZ domain. Mutation of the carboxy-terminal amino acids of plexin-B1 or coexpression of a dominant negative PDZ-RhoGEF abrogated the ability of plexin-B1 to cause stress fiber formation. Our results demonstrate a role for PDZ-RhoGEF in B plexin-mediated activation of Rho/Rho kinase signaling, implicated in the regulation of axon guidance and cell migration.
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Affiliation(s)
- Mariette H E Driessens
- Division of Cell Biology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands.
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