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Chiffré-Rakotoarivony D, Diaz-Cau I, Ranc A, Champiat MA, Rousseau F, Gournay-Garcia C, Théron A, Navarro R, Boulot P, Aguilar-Martinez P, Sauguet P, Biron-Andréani C. Bleeding risk in hemophilia A and B carriers: comparison of factor levels determined using chronometric and chromogenic assays. Blood Coagul Fibrinolysis 2024:00001721-990000000-00150. [PMID: 38700721 DOI: 10.1097/mbc.0000000000001305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2024]
Abstract
BACKGROUND Predicting the bleeding risk in hemophilia A and B carriers (HAC, HBC) is challenging. OBJECTIVE The objectives of this study were to describe the bleeding phenotype in HAC and HBC using the standardized Tosetto bleeding score (BS); to determine whether the BS correlates better with factor levels measured with a chromogenic assay than with factor levels measured with chronometric and thrombin generation assays; and to compare the results in HAC and HBC. METHODS This ambispective, noninterventional study included obligate and sporadic HAC and HBC followed at a hemophilia treatment center between 1995 and 2019. RESULTS AND CONCLUSION The median BS (3, range 0-21 vs. 3.5, range 0-15, P = ns, respectively) and the abnormal BS rate (35.6% vs. 38.2%, P = ns) were not significantly different in 104 HAC and 34 HBC (mean age: 38 years, 6-80 years). However, some differences were identified. The risk of factor deficiency was higher in HBC than HAC. Specifically, Factor VIII activity (FVIII):C/Factor IX activity (FIX):C level was low (<40 IU/dl) in 18.3% (chronometric assay) and 17.5% (chromogenic assay) of HAC and in 47% and 72.2% of HBC ( P < 0.001). Moreover, the FIX:C level thresholds of 39.5 IU/dl (chronometric assay) and of 33.5 IU/dl (chromogenic assay) were associated with very good sensitivity (92% and 100%, respectively) and specificity (80% for both) for bleeding risk prediction in HBC. Conversely, no FVIII:C level threshold could be identified for HAC, probably due to FVIII:C level variations throughout life.
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Affiliation(s)
- Delphine Chiffré-Rakotoarivony
- Hemophilia Treatment Centre, Department of Biological Hematology
- Department of Biological Hematology, Hematology Laboratory
| | | | - Alexandre Ranc
- Department of Biological Hematology, Hematology Laboratory
| | | | | | | | - Alexandre Théron
- Hemophilia Treatment Centre, Department of Biological Hematology
| | - Robert Navarro
- Hemophilia Treatment Centre, Department of Biological Hematology
| | - Pierre Boulot
- Department of Obstetrics and Gynecology, University Hospital, Montpellier, France
| | - Patricia Aguilar-Martinez
- Hemophilia Treatment Centre, Department of Biological Hematology
- Department of Biological Hematology, Hematology Laboratory
| | | | - Christine Biron-Andréani
- Hemophilia Treatment Centre, Department of Biological Hematology
- Department of Biological Hematology, Hematology Laboratory
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2
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Gualtierotti R, Garagiola I, Mortarino M, Spena S, Romero-Lux O, Peyvandi F. Gender equity in hemophilia: need for healthcare, familial, and societal advocacy. Front Med (Lausanne) 2024; 11:1345496. [PMID: 38646558 PMCID: PMC11026857 DOI: 10.3389/fmed.2024.1345496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 03/11/2024] [Indexed: 04/23/2024] Open
Abstract
Hemophilia is a rare bleeding disorder caused by a genetic defect on chromosome X. It is inherited as an X-linked trait, and hence, it is more frequently diagnosed in males, whereas women have been traditionally considered only as carriers of the disease. However, the role of women in families of patients with hemophilia is pivotal. As mothers, sisters, daughters, and female partners of patients with hemophilia, they play a central role in the management of the patient, considering healthcare, social, and familial aspects, but they might be affected by the disease as well, particularly in regions where consanguinity is frequent. This paper aims to explore the involvement of women in hemophilia, including their carrier status, bleeding symptoms, treatment challenges, and psychosocial impact not only related to male patients, but also as patients affected with hemophilia themselves. We advocate health equity, equal access to healthcare for men and women with hemophilia and dedicated resources to improve the unique needs of the women dealing with hemophilia, ultimately leading to improved care and quality of life.
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Affiliation(s)
- Roberta Gualtierotti
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Centre, Milan, Italy
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Isabella Garagiola
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Centre, Milan, Italy
| | - Mimosa Mortarino
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Centre, Milan, Italy
| | - Silvia Spena
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Centre, Milan, Italy
| | | | - Flora Peyvandi
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Centre, Milan, Italy
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
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3
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Puetz J, Hu B. Factor activity levels and bleeding scores in pediatric hemophilia carriers enrolled in the ATHNdataset. Pediatr Blood Cancer 2023; 70:e30644. [PMID: 37638815 DOI: 10.1002/pbc.30644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 06/22/2023] [Accepted: 08/14/2023] [Indexed: 08/29/2023]
Abstract
BACKGROUND Multiple studies have now shown that a significant proportion of hemophilia carriers meet the criteria for having hemophilia and/or report abnormal bleeding. However, to date, investigations of hemophilia carriers have almost exclusively involved women over 18 years of age. Little is known about factor activity levels and bleeding scores in carriers during childhood. We queried a large deidentified database of subjects with bleeding disorders residing in the United States to determine factor activity levels and bleeding scores. PROCEDURES The ATHNdataset was queried for hemophilia carriers under 18 years of age. Collected information included demographics, factor activity levels, and bleeding scores. RESULTS Over 700 carriers in the pediatric age group were identified, of which 626 submitted factor activity levels. Nearly half had factor activity levels less than 40 IU/dL, thereby meeting criteria for having hemophilia. Of those reporting bleeding scores, only 13.5% reported an abnormal bleeding score for age. The proportion reporting abnormal bleeding scores was higher in those with factor levels less than 40 IU/dL (23%) than those greater than 40 IU/dL (9.7%). CONCLUSIONS The proportion of pediatric carriers with hemophilia was double of that previously reported for adults. Of those with hemophilia reporting a bleeding score, the majority (77%) did not report an abnormal bleeding score for age. However, nearly 10% of pediatric carriers not meeting criteria for having hemophilia reported abnormal bleeding scores for age. Similar results are reported in adults suggesting that factor activity levels may not be predictive of bleeding symptoms in carriers.
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Affiliation(s)
- John Puetz
- Saint Louis University School of Medicine, SSM Health Cardinal Glennon Children's Hospital, St. Louis, Missouri, USA
| | - Brian Hu
- Department of Pediatrics, Division of Pediatric Hematology/Oncology, American Thrombosis and Hemostasis Network, Rochester, New York, USA
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4
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Chaigneau M, Botros M, Grabell J, Hopman W, James P. Challenges and knowledge gaps facing hemophilia carriers today: Perspectives from patients and health care providers. Res Pract Thromb Haemost 2022; 6:e12783. [PMID: 36186104 PMCID: PMC9487445 DOI: 10.1002/rth2.12783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 06/07/2022] [Accepted: 07/22/2022] [Indexed: 11/07/2022] Open
Abstract
Background Hemophilia carriers experience abnormal bleeding symptoms; however, a lack of awareness about this topic coupled with additional knowledge gaps and barriers leads to suboptimal care for this population. Objective The primary objective was to describe the current knowledge gaps and challenges from the perspective of both hemophilia carriers and their health care providers. Methods We carried out a mixed methods descriptive study with two population groups between September and December 2020. The hemophilia carrier perspective was obtained through both focus groups and questionnaires, whereas the health care providers perspective obtained via questionnaire sent to the Association of Hemophilia Care Directors of Canada and the Canadian Association of Nurses in Hemophilia Care. Focus groups were analyzed using descriptive thematic analysis and quantitative survey data was also analyzed. Results Eleven hemophilia carriers participated along with 19 health care providers (11 physicians, eight nurses). Hemophilia carrier focus group discussions identified four areas representing major challenges or knowledge gaps: (1) negative psychosocial impacts; (2) difficulty determining symptom significance; (3) need for self‐advocacy; (4) testing concerns. Survey results from both groups were aligned with the most important topics for ongoing education identified as information on abnormal bleeding symptoms, where to seek treatment, and considerations for heavy menstrual bleeding/menstruation. The majority of both study groups believe obligate or potential carriers should have factor levels checked regardless of age if symptoms of abnormal bleeding occur or before an invasive procedure. However, hemophilia carriers were significantly more in favor of genetic testing under the age of consent than health care providers in all scenarios evaluated.
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Affiliation(s)
| | | | - Julie Grabell
- Deparment of Medicine Queen's University Kingston Ontario Canada
| | - Wilma Hopman
- KGH Research Institute Kingston Ontario Canada.,Department of Public Health Sciences Queen's University Kingston Ontario Canada
| | - Paula James
- Deparment of Medicine Queen's University Kingston Ontario Canada
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5
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Puetz J, Cheng D. Descriptive analysis of bleeding symptoms in haemophilia carriers enrolled in the ATHNdataset. Haemophilia 2021; 27:1045-1050. [PMID: 34587351 DOI: 10.1111/hae.14422] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 08/27/2021] [Accepted: 09/16/2021] [Indexed: 01/18/2023]
Abstract
BACKGROUND Several studies have reported that haemophilia carriers have a bleeding tendency independent of factor activity. However, investigations have been fraught with methodological concerns. The ATHNdataset houses the largest data set of haemophilia carriers in the world. We undertook an analysis of haemophilia carriers in this data set using methodologies that characterize bleeding symptoms in carriers. AIM Determine the proportion of haemophilia carriers who have a normal bleeding score (BLS) and factors that affect the BLS. METHODS The ATHNdataset was queried for haemophilia carriers with a documented BLS. Collected data included demographics, ISTH-BAT score, factor activity level, type of haemophilia (A or B), genotype and geographic residence. RESULTS Nine hundred twenty-two haemophilia carriers in the ATHNdataset reported a BLS. When adjusted for age, 74% reported a normal score. Logistic regression identified age, factor activity level, ethnicity and region of residence as risk factors for an abnormal score. CONCLUSIONS The majority of haemophilia carriers (74%) in the ATHNdataset had a normal BLS, including the majority (59%) with factor activity levels < 40 IU/dl. Conversely, 24% of haemophilia carriers with a factor activity level > 40 IU/dl reported an abnormal BLS. These results are consistent with previous studies of haemophilia carriers. Additional investigation is needed to determine why a majority of haemophilia carriers with low factor activity levels report normal BLSs while a significant minority of haemophilia carriers with normal activity levels report abnormal BLSs.
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Affiliation(s)
- John Puetz
- Department of Pediatrics, SSM Health Cardinal Glennon Children's Hospital, Saint Louis University School of Medicine, St. Louis, Missouri, USA
| | - Dunlei Cheng
- American Thrombosis and Hemostasis Network, Rochester, New York, USA
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6
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van Galen K, Lavin M, Skouw-Rasmussen N, Fischer K, Noone D, Pollard D, Mauser-Bunschoten E, Khair K, Gomez K, van Loon E, Bagot CN, Elfvinge P, d'Oiron R, Abdul-Kadir R. European principles of care for women and girls with inherited bleeding disorders. Haemophilia 2021; 27:837-847. [PMID: 34343384 DOI: 10.1111/hae.14379] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 06/29/2021] [Accepted: 07/07/2021] [Indexed: 01/19/2023]
Abstract
INTRODUCTION Despite increasing awareness of issues faced by women and girls with inherited BDs (WGBD), standards of care are lacking, with disparities in diagnosis and treatment for WGBD across Europe. We aimed to develop practical principles of care (PoC) to promote standardization of care for WGBD within European Haemophilia Treatment and Comprehensive Care Centres (HTC/CCCs). METHODS The co-creation process, supported by the European Association for Haemophilia and Allied Disorders, consisted of four multidisciplinary meetings with health care providers (HCPs) experienced in WGBD care, and European Haemophilia Consortium representatives, combined with broad patient and HCP consultations in the European haemophilia community. Relevant medical societies outside Europe were contacted for confirmation. RESULTS We developed ten PoC for WGBD, stressing the importance and benefits of a centralized, multidisciplinary, comprehensive, family-centred approach to support and manage WGBD during all life stages. These PoC emphasise the right to equitable access and quality of care for all people with BDs, irrespective of gender. Multiple medical societies outside Europe also confirmed their support for endorsement. CONCLUSIONS Ten PoC for WGBD evolved from an iterative process among stakeholders, supported by relevant medical societies worldwide. These PoC can serve as a benchmark for diagnosis and comprehensive multidisciplinary management of WGBD, and improve awareness of their unique challenges. They offer a framework to guide HTC/CCCs in providing equitable care for all WGBD, both in their own services and in other healthcare settings. Implementation of these principles aims to positively impact the health, wellbeing and quality of life for WGBD.
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Affiliation(s)
- Karin van Galen
- Van Creveldkliniek, University Medical Center Utrecht, University Utrecht, Utrecht, The Netherlands
| | - Michelle Lavin
- Irish Centre for Vascular Biology, School of Pharmacy and Biomedical Sciences, RCSI, Dublin and National Coagulation Centre, St. James' Hospital, Dublin, Ireland
| | | | - Kathelijn Fischer
- Van Creveldkliniek, University Medical Center Utrecht, University Utrecht, Utrecht, The Netherlands
| | - Declan Noone
- President, European Haemophilia Consortium, Brussels, Belgium
| | - Debra Pollard
- Haemophilia Centre and Thrombosis Unit, Royal Free London NHS Foundation Trust, London, UK
| | | | - Kate Khair
- Director of Research, Haemnet, London, UK
| | - Keith Gomez
- Haemophilia Centre and Thrombosis Unit, Royal Free London NHS Foundation Trust, London, UK
| | | | | | - Petra Elfvinge
- Department of Haematology, Karolinska University, Stockholm, Sweden
| | - Roseline d'Oiron
- Centre de Référence de l'Hémophilie et des Maladies Hémorragiques Constitutionnelles, APHP Paris Saclay - Hôpital Bicêtre and Inserm, U 1176 Le Kremlin Bicêtre, France
| | - Rezan Abdul-Kadir
- Department of Obstetrics and Gynaecology, Royal Free London NHS Foundation Trust and Institute for Women's Health, University College London, London, UK
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van Galen KPM, d’Oiron R, James P, Abdul‐Kadir R, Kouides PA, Kulkarni R, Mahlangu JN, Othman M, Peyvandi F, Rotellini D, Winikoff R, Sidonio RF. A new hemophilia carrier nomenclature to define hemophilia in women and girls: Communication from the SSC of the ISTH. J Thromb Haemost 2021; 19:1883-1887. [PMID: 34327828 PMCID: PMC8361713 DOI: 10.1111/jth.15397] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 05/17/2021] [Accepted: 05/17/2021] [Indexed: 12/21/2022]
Abstract
Hemophilia A and B predominantly attracts clinical attention in males due to X-linked inheritance, introducing a bias toward female carriers to be asymptomatic. This common misconception is contradicted by an increasing body of evidence with consistent reporting on an increased bleeding tendency in hemophilia carriers (HCs), including those with normal factor VIII/IX (FVIII/IX) levels. The term HC can hamper diagnosis, clinical care, and research. Therefore, a new nomenclature has been defined based on an open iterative process involving hemophilia experts, patients, and the International Society on Thrombosis and Haemostasis (ISTH) community. The resulting nomenclature accounts for personal bleeding history and baseline plasma FVIII/IX level. It distinguishes five clinically relevant HC categories: women/girls with mild, moderate, or severe hemophilia (FVIII/IX >0.05 and <0.40 IU/ml, 0.01-0.05 IU/ml, and <0.01 IU/ml, respectively), symptomatic and asymptomatic HC (FVIII/IX ≥0.40 IU/ml with and without a bleeding phenotype, respectively). This new nomenclature is aimed at improving diagnosis and management and applying uniform terminologies for clinical research.
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Affiliation(s)
- Karin P. M. van Galen
- Van CreveldkliniekUniversity Medical Center UtrechtUtrecht UniversityUtrechtthe Netherlands
| | - Roseline d’Oiron
- Centre de Référence de l’Hémophilie et des Maladies Hémorragiques ConstitutionnellesAPHP Paris Saclay ‐ Hôpital Bicêtre and Inserm U 1176Le Kremlin BicêtreFrance
| | - Paula James
- Department of MedicineQueen’s UniversityKingstonOntarioCanada
| | - Rezan Abdul‐Kadir
- Department of Obstetrics and Gynaecology and Katharine Dormandy Haemophilia and Thrombosis UnitThe Royal Free Foundation Hospital and Institute for Women’s HealthUniversity College LondonLondonUK
| | - Peter A. Kouides
- University of RochesterRochesterNew YorkUSA
- The Mary M. Gooley Hemophilia CenterRochesterNew YorkUSA
| | | | - Johnny N. Mahlangu
- Faculty of Health SciencesUniversity of the WitwatersrandJohannesburgSouth Africa
| | - Maha Othman
- School of MedicineQueen’s University, and School of Baccalaureate NursingSt. Lawrence CollegeKingstonOntarioCanada
| | - Flora Peyvandi
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore PoliclinicoAngelo Bianchi Bonomi Hemophilia and Thrombosis CenterMilanItaly
- Department of Pathophysiology and TransplantationUniversità degli Studi di MilanoMilanItaly
| | | | - Rochelle Winikoff
- Department of PediatricService of HematologySainte‐Justine HospitalMontrealQuebecCanada
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8
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Hansen RS, Carlsen M, Rasmussen KF, Vinholt PJ. Translation, validation, and usability of the International Society on Thrombosis and Haemostasis Bleeding Assessment Tool (Self-ISTH-BAT). Eur J Haematol 2021; 107:104-110. [PMID: 33740833 DOI: 10.1111/ejh.13625] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 03/15/2021] [Accepted: 03/16/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND Bleeding questionnaires are effective and recommended screening tools for potential bleeding disorder, but healthcare practitioner-administered bleeding assessment tools (expert-ISTH-BATs) are time-consuming. A patient-administered ISTH-BAT (self-ISTH-BAT) has been developed and validated. We translated, validated, and evaluated the usability of self-ISTH-BAT. METHODS We conducted a forward-backward translation of self-ISTH-BAT from English to Danish. Expert-ISTH-BAT and Danish self-ISTH-BAT were administered to 106 random individuals aged ≥18 years attending Odense University Hospital between August and November 2020 for elective blood sampling. Results comprise a score of bleeding symptoms. RESULTS Mean age of included individuals were 49 years (range: 18-83), and 59% were female. Median self-ISTH-BAT score was 2 (range: 0-18) and 1 (range: 0-22) for expert-ISTH-BAT (P = .09). All organ systems had ≥90% exact score agreement between expert-ISTH-BAT and self-ISTH-BAT, except gastrointestinal bleeding (77%) and other bleedings (72%). We found an acceptable correlation (r2 = .80) between expert-ISTH-BAT and self-ISTH-BAT. The self-ISTH-BAT had 82% sensitivity and 89% specificity at the recommended cutoff for expert-BAT (female:<6; male:<4). At this cutoff, 10 had abnormal self-ISTH-BAT scores with normal expert-ISTH-BAT. Three (3%) had normal self-ISTH-BAT with abnormal expert-ISTH-BAT. CONCLUSION Self-ISTH-BAT can replace expert-ISTH-BAT as a screening tool for bleeding disorders in Danish individuals as only 3% were not identified with the self-ISTH-BAT tool.
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Affiliation(s)
- Rasmus Søgaard Hansen
- Department of Clinical Biochemistry and Pharmacology, Odense University Hospital, Odense C, Denmark.,OPEN, Open Patient data Explorative Network, Odense University Hospital, Odense C, Denmark
| | - Mette Carlsen
- Department of Clinical Biochemistry and Pharmacology, Odense University Hospital, Odense C, Denmark
| | | | - Pernille Just Vinholt
- Department of Clinical Biochemistry and Pharmacology, Odense University Hospital, Odense C, Denmark.,OPEN, Open Patient data Explorative Network, Odense University Hospital, Odense C, Denmark
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9
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James PD. Women and bleeding disorders: diagnostic challenges. HEMATOLOGY. AMERICAN SOCIETY OF HEMATOLOGY. EDUCATION PROGRAM 2020; 2020:547-552. [PMID: 33275722 PMCID: PMC7727580 DOI: 10.1182/hematology.2020000140] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Women with bleeding disorders suffer from multiple bleeding symptoms, including easy bruising, epistaxis, bleeding from minor wounds and the oral cavity, and bleeding after dental work or surgery. However, women with bleeding disorders especially suffer from gynecologic and obstetrical bleeding. These symptoms often are not recognized as abnormal, and many women are left undiagnosed and without access to appropriate medical care. Additional challenges to diagnosing women with bleeding disorders include lack of access to appropriate laboratory testing and issues around disease classification and nomenclature. Efforts have been undertaken to address these challenges, including the development and validation of bleeding assessment tools and strategies to clarify diagnostic thresholds and algorithms for von Willebrand disease (VWD) and platelet function disorders. Efforts to improve communication with the nomenclature used for hemophilia carriers are also underway.
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10
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Tang GH, Norris E, Petrucci J, James PD, Lee A, Poon MC, Floros G, Boma-Fischer L, Teitel J, Nisenbaum R, Sholzberg M. Bone health in symptomatic carriers of haemophilia A: a protocol for a multicentre prospective matched-cohort study. BMJ Open 2019; 9:e032891. [PMID: 31796490 PMCID: PMC7003383 DOI: 10.1136/bmjopen-2019-032891] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
INTRODUCTION Haemophilia A is an X linked inherited bleeding disorder, caused by a decrease in coagulation factor VIII. Persons with haemophilia experience repeated musculoskeletal bleeding, which can lead to decreased range of motion, irreversible joint damage, low bone mineral density (BMD), and are at greater risk for osteoporosis. Women heterozygous for this mutation, also known as haemophilia A carriers, can have bleeding symptoms and even experience joint bleeding evidenced by radiological soft tissue and osteochondral changes. The prevalence of low BMD as a risk factor for osteoporosis has never been evaluated in carriers of haemophilia, and given the recent findings which suggest subclinical musculoskeletal bleeding in carrier women, we hypothesise that they too are at risk of impaired bone health. METHODS AND ANALYSIS This is a national multicentre prospective matched-cohort study to compare BMD T-scores among symptomatic haemophilia A carriers, 50 years of age or older, with age-matched and body mass index-matched non-carriers (1:1). A total of 40 symptomatic carriers and 40 matched non-carriers will be recruited from St. Michael's Hospital, Kingston General Hospital in Ontario, Canada and Foothills Medical Centre in Alberta, Canada. Multivariable linear regression models will be used to estimate the effect of haemophilia carriership on BMD T-scores, adjusting for age, body mass index and other relevant covariates. ETHICS AND DISSEMINATION The protocol was designed and will be conducted in compliance with applicable laws, rules and regulations. Research ethics approval was obtained from St. Michael's Hospital, Foothills Medical Centre, and Kingston General Hospital. Findings will be presented at international venues such as the American Society of Haematology and the World Federation of Haemophilia World Congress. The authors of this study will seek publication in journals such as Blood, Journal of Thrombosis and Haemostasis, American Journal ofHematology and British Journal ofHaematology.
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Affiliation(s)
- Grace H Tang
- Hematology/Oncology, St. Michael's Hospital, Toronto, Ontario, Canada
| | - Erin Norris
- Rheumatology, St. Michael's Hospital, Toronto, Ontario, Canada
| | - Jessica Petrucci
- Hematology/Oncology, St. Michael's Hospital, Toronto, Ontario, Canada
| | - Paula D James
- Hematology, Kingston General Hospital, Kingston, Ontario, Canada
| | - Adrienne Lee
- Hematology, University of Calgary, Calgary, Alberta, Canada
| | - Man-Chiu Poon
- Hematology, University of Calgary, Calgary, Alberta, Canada
| | - Georgina Floros
- Hematology/Oncology, St. Michael's Hospital, Toronto, Ontario, Canada
| | | | - Jerry Teitel
- Hematology/Oncology, St. Michael's Hospital, Toronto, Ontario, Canada
| | - Rosane Nisenbaum
- Applied Health Research Centre, MAP Centre for Urban Health Solutions, St. Michael's Hospital, Toronto, Ontario, Canada
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
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11
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Li S, Fang Y, Li L, Lee A, Poon M, Zhao Y, Zhang X, Wang S, Cheng Y, Li K. Bleeding assessment in haemophilia carriers—High rates of bleeding after surgical abortion and intrauterine device placement: A multicentre study in China. Haemophilia 2019; 26:122-128. [PMID: 31742836 DOI: 10.1111/hae.13889] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 10/20/2019] [Accepted: 10/30/2019] [Indexed: 12/23/2022]
Affiliation(s)
- Sen Li
- Department of Haematology Peking Union Medical College Hospital Chinese Academy of Medical Sciences & Peking Union Medical College Beijing China
| | - Yunhai Fang
- Shandong Blood Center Shandong Hemophilia Treatment Center Jinan China
| | - Li Li
- Department of Nursing Peking Union Medical College Hospital Chinese Academy of Medical Sciences & Peking Union Medical College Beijing China
| | - Adrienne Lee
- Department of Medicine Foothills Medical Center, and Southern Alberta Rare Blood and Bleeding Disorders Comprehensive Care Program University of Calgary Calgary AB Canada
| | - Man‐Chiu Poon
- Department of Medicine Foothills Medical Center, and Southern Alberta Rare Blood and Bleeding Disorders Comprehensive Care Program University of Calgary Calgary AB Canada
| | - Yongqiang Zhao
- Department of Haematology Peking Union Medical College Hospital Chinese Academy of Medical Sciences & Peking Union Medical College Beijing China
| | - Xinsheng Zhang
- Shandong Blood Center Shandong Hemophilia Treatment Center Jinan China
| | - Shujie Wang
- Department of Haematology Peking Union Medical College Hospital Chinese Academy of Medical Sciences & Peking Union Medical College Beijing China
| | - Yan Cheng
- Shandong Blood Center Shandong Hemophilia Treatment Center Jinan China
| | - Kuixing Li
- Department of Haematology Peking Union Medical College Hospital Chinese Academy of Medical Sciences & Peking Union Medical College Beijing China
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12
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VanderMeulen H, Petrucci J, Floros G, Meffe F, Dainty KN, Sholzberg M. The experience of postpartum bleeding in women with inherited bleeding disorders. Res Pract Thromb Haemost 2019; 3:733-740. [PMID: 31624793 PMCID: PMC6782019 DOI: 10.1002/rth2.12246] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 06/27/2019] [Accepted: 07/01/2019] [Indexed: 12/16/2022] Open
Abstract
INTRODUCTION Postpartum hemorrhage (PPH) affects 6% of all deliveries and is the leading cause of maternal death worldwide (19.7%). The incidence of PPH in women with inherited bleeding disorders is substantially greater than in unaffected women; however, estimates of relative risk are highly variable. To date, their experience with postpartum bleeding has not been well studied. OBJECTIVE We set out to explore the experience with, understanding of, and attitudes regarding postpartum bleeding among women with inherited bleeding disorders. METHODS This qualitative study involved focused interviews of women with inherited bleeding disorders about postpartum bleeding. Women followed at a multidisciplinary clinic for women with inherited bleeding disorders who have experienced childbirth within the last 5 years were included in the study. The interview style was semistructured. Interviews continued until the point of saturation of themes. All interviews were transcribed and then analyzed using qualitative descriptive analysis. RESULTS We interviewed 10 women with inherited bleeding disorders. Themes that emerged were normalization of excessive vaginal bleeding, difficulty distinguishing normal from abnormal postpartum bleeding, and empowerment of women by having a clear delivery care plan. CONCLUSION In this study, women with inherited bleeding disorders were desensitized to heavy vaginal blood loss. As a result, excessive postpartum bleeding was not recognized by many of the women we interviewed. Results highlight the importance of a multidisciplinary delivery care plan for these women. Findings revealed key areas for targeted multidisciplinary intervention.
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Affiliation(s)
| | - Jessica Petrucci
- Department of MedicineSt. Michael's HospitalUniversity of TorontoTorontoOntarioCanada
| | - Georgina Floros
- Department of MedicineSt. Michael's HospitalUniversity of TorontoTorontoOntarioCanada
| | - Filomena Meffe
- Department of Obstetrics and GynecologySt. Michael's HospitalUniversity of TorontoTorontoOntarioCanada
| | - Katie N. Dainty
- Institute of Health Policy, Management & EvaluationUniversity of TorontoTorontoOntarioCanada
- North York General HospitalUniversity of TorontoTorontoOntarioCanada
| | - Michelle Sholzberg
- Department of MedicineUniversity of TorontoTorontoOntarioCanada
- Department of MedicineSt. Michael's HospitalUniversity of TorontoTorontoOntarioCanada
- Department of Laboratory Medicine and PathobiologyUniversity of TorontoTorontoOntarioCanada
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13
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Winikoff R, Scully MF, Robinson KS. Women and inherited bleeding disorders - A review with a focus on key challenges for 2019. Transfus Apher Sci 2019; 58:613-622. [PMID: 31582329 DOI: 10.1016/j.transci.2019.08.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The area of women and inherited bleeding disorders has undergone quick expansion in recent years. More patients are being identified and expertise to diagnose and manage these patients is now essential for practising physicians. Programs to help educate and empower patients and caregivers are now in place. Common inherited bleeding disorders affecting women include von Willebrand disease (VWD), inherited platelet disorders, and rare inherited bleeding disorders such as factor VII (FVII) deficiency and factor XI (FXI) deficiency. Specific clinical tools have been developed to help clinicians and patients screen for the presence of these bleeding disorders in both adult and pediatric populations. Affected women can experience heavy menstrual bleeding and resulting iron deficiency anemia, postpartum hemorrhage, and hemorrhagic ovarian cysts which need to be properly managed. Excessive bleeding can adversely affect quality of life in these women. Front line therapy for bleeding in mild cases focuses on the use of non-specific hemostatic agents such as DDAVP ®, tranexamic acid and hormonal agents but specific factor replacement and/or blood products may be required in more severe cases, in severe bleeding or as second line treatment when bleeding is not responsive to first line agents. Iron status should be optimised in these women especially in pregnancy and use of an electronic app can now help clinicians achieve this. These patients should ideally be managed by a multidisciplinary team whenever possible even remotely. Although clinical research has closed some knowledge gaps regarding the diagnosis and management of these women, there remains significant variation in practise and lack of evidence-based guidelines still exists in many spheres of clinical care in which caregivers must rely on expert opinion. Ongoing efforts in education and research will continue to improve care for these women and restore quality of life for them.
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Affiliation(s)
- R Winikoff
- Division of Hematology-Oncology, Sainte-Justine University Hospital Center, Montréal, QC, Canada
| | - M F Scully
- Department of Medicine, Memorial University of Newfoundland Medical School, NL, Canada.
| | - K S Robinson
- Division of Hematology, Dalhousie University, Queen Elizabeth II Health Sciences Centre, Department of Medicine, Halifax, NS, Canada.
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14
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Gupta S, Bravo MC, Heiman M, Nakar C, Brummel-Ziedins K, Miller CH, Shapiro A. Mathematical model of thrombin generation and bleeding phenotype in Amish carriers of Factor IX:C deficiency vs. controls. Thromb Res 2019; 182:43-50. [PMID: 31446339 DOI: 10.1016/j.thromres.2019.07.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 06/12/2019] [Accepted: 07/21/2019] [Indexed: 12/20/2022]
Abstract
INTRODUCTION Factor IX:C (FIX:C) levels vary in hemophilia B carriers even in pedigrees with a unifying genetic defect. Analyzing the balance between pro-and anticoagulants might increase our understanding of carriers' bleeding potential. AIM In this research study, we evaluated bleeding scores (BS) and a novel mathematical model of thrombin generation (TG) in Amish FIX:C deficient carriers and controls. METHODS Blood samples and BS were obtained from post-menarchal females, including 59 carriers and 57 controls from the same extended pedigree. Factors II, V, VII, VIII, IX, X, antithrombin, tissue factor pathway inhibitor and protein C were assayed to generate mathematical models of TG in response to 5pM tissue factor (TF) and for TF + thrombomodulin. BS was based on a modification of the MCMDM-1VWD scoring system. RESULTS Carriers had a lower mean FIX:C (68% vs. 119%), von Willebrand factor antigen (108 vs.133) and Tissue activatable fibrinolysis inhibitor (103 vs. 111) compared to controls; both groups had a similar mean BS. Carriers demonstrated significantly lower TG parameters on both mathematical models compared to controls. Carriers with FIX:C ≤ 50% had lower TG curves than those >50% but similar BS. CONCLUSION Thrombin generation showed significant differences between carriers and controls, between low (≤50%) and high (>50%) FIX:C carriers, and specifically in the TF + thrombomodulin model, between high FIX:C carriers and controls, although the BS were not different.
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Affiliation(s)
- S Gupta
- Indiana Hemophilia and Thrombosis Center, Indianapolis, IN, United States of America.
| | - M C Bravo
- University of Vermont, Colchester, VT, United States of America.
| | - M Heiman
- Indiana Hemophilia and Thrombosis Center, Indianapolis, IN, United States of America
| | - C Nakar
- Indiana Hemophilia and Thrombosis Center, Indianapolis, IN, United States of America
| | | | - C H Miller
- Division of Blood Disorders, National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, GA, United States of America.
| | - A Shapiro
- Indiana Hemophilia and Thrombosis Center, Indianapolis, IN, United States of America
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15
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Sholzberg M. Haemophilia commentary: The utility of BATs. Haemophilia 2018; 24:522-524. [DOI: 10.1111/hae.13487] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/13/2018] [Indexed: 11/26/2022]
Affiliation(s)
- M. Sholzberg
- Division of Hematology; Department of Medicine; Department of Laboratory Medicine and Pathobiology; St. Michael's Hospital; Toronto ON Canada
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