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Miesbach W, Konkle B, Chowdary P, Kaczmarek R, Leebeek F, Mahlangu J, Makris M, Pipe SW, Srivastava A, Voorberg J, Pierce GF, Peyvandi F. Recommendations for a minimum data set for monitoring gene therapy in hemophilia: communication from the ISTH SSC Working Group on Gene Therapy. J Thromb Haemost 2024; 22:1510-1515. [PMID: 38242208 DOI: 10.1016/j.jtha.2023.12.039] [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: 11/20/2023] [Revised: 12/14/2023] [Accepted: 12/29/2023] [Indexed: 01/21/2024]
Abstract
Independent data collection is crucial in addressing the challenges associated with gene therapy for hemophilia, which is a promising treatment option but requires careful monitoring and management of short-term and potential long-term safety concerns. The International Society on Thrombosis and Haemostasis has identified a minimum efficacy and safety data set included in the World Federation of Hemophilia Gene Therapy Registry that should be collected on a national basis at specific time points for each patient who has been treated with the gene therapy products. This Gene Therapy Minimum Data Set (GT-MDS) was developed to facilitate data collection and to ensure capturing the most relevant data and most known and unknown safety and efficacy parameters recently cited by the European Medicine Agencies. The concept of assembling a minimum data set is not about creating a new data set but rather about identifying a subset of critical and essential topics that should always be included. The GT-MDS is structured into 3 sections and comprises an abridged list of 6 topics during routine gene therapy follow-up, keeping the number of data points low but allowing for rapid and independent data evaluation. The World Federation of Hemophilia Gene Therapy Registry data set, developed by the World Federation of Hemophilia, the International Society on Thrombosis and Haemostasis, and other organizations, including industry partners in 2020, is comprehensive. The GT-MDS reports the minimum relevant information that should not be lost and is mandatory to be collected for all patients who undergo gene therapy. Therefore, the implementation of the gene therapy registry and the minimum data set empowers and enhances data collection at a global level.
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Affiliation(s)
- Wolfgang Miesbach
- Medical Clinic 2, University Hospital Frankfurt, Frankfurt, Germany.
| | - Barbara Konkle
- Bloodworks Northwest, Seattle, Washington, USA; University of Washington - Medicine, Seattle, Washington, USA
| | - Pratima Chowdary
- Royal Free Hospital, Katharine Dormandy Haemophilia and Thrombosis Centre, London, United Kingdom of Great Britain and Northern Ireland
| | - Radoslaw Kaczmarek
- Herman B Wells Center for Pediatric Research Indiana University School of Medicine, Indianapolis, Indiana, USA; Ludwik Hirszfeld Polish Academy of Sciences, Institute of Immunology and Experimental Therapy, Wroclaw, Poland
| | - Frank Leebeek
- Erasmus University Medical Center, Rotterdam, Netherlands
| | | | - Michael Makris
- Royal Hallamshire Hospital, Sheffield Haemophilia and Thrombosis Centre, Sheffield, United Kingdom of Great Britain and Northern Ireland
| | | | | | | | | | - Flora Peyvandi
- Universita degli Studi di Milano, Milano, Italy; Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
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2
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Pierce GF, Fong S, Long BR, Kaczmarek R. Deciphering conundrums of adeno-associated virus liver-directed gene therapy: focus on hemophilia. J Thromb Haemost 2024; 22:1263-1289. [PMID: 38103734 DOI: 10.1016/j.jtha.2023.12.005] [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: 09/15/2023] [Revised: 11/07/2023] [Accepted: 12/01/2023] [Indexed: 12/19/2023]
Abstract
Adeno-associated virus gene therapy has been the subject of intensive investigation for monogenic disease gene addition therapy for more than 25 years, yet few therapies have been approved by regulatory agencies. Most have not progressed beyond phase 1/2 due to toxicity, lack of efficacy, or both. The liver is a natural target for adeno-associated virus since most serotypes have a high degree of tropism for hepatocytes due to cell surface receptors for the virus and the unique liver sinusoidal geometry facilitating high volumes of blood contact with hepatocyte cell surfaces. Recessive monogenic diseases such as hemophilia represent promising targets since the defective proteins are often synthesized in the liver and secreted into the circulation, making them easy to measure, and many do not require precise regulation. Yet, despite initiation of many disease-specific clinical trials, therapeutic windows are often nonexistent, resulting in excess toxicity and insufficient efficacy. Iterative progress built on these attempts is best illustrated by hemophilia, with the first regulatory approvals for factor IX and factor VIII gene therapies eventually achieved 25 years after the first gene therapy studies in humans. Although successful gene transfer may result in the production of sufficient transgenic protein to modify the disease, many emerging questions on durability, predictability, reliability, and variability of response have not been answered. The underlying biology accounting for these heterogeneous responses and the interplay between host and virus is the subject of intense investigation and the subject of this review.
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Affiliation(s)
- Glenn F Pierce
- World Federation of Hemophilia, Montreal, Quebec, Canada.
| | - Sylvia Fong
- BioMarin Pharmaceutical Inc, Research and Early Development, Novato, California, USA
| | - Brian R Long
- BioMarin Pharmaceutical Inc, Research and Early Development, Novato, California, USA
| | - Radoslaw Kaczmarek
- Department of Pediatrics, Indiana University School of Medicine, Wells Center for Pediatric Research, Indiana, USA; Laboratory of Glycobiology, Hirszfeld Institute of Immunology and Experimental Therapy, Wroclaw, Poland
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Zangi AR, Amiri A, Pazooki P, Soltanmohammadi F, Hamishehkar H, Javadzadeh Y. Non-viral and viral delivery systems for hemophilia A therapy: recent development and prospects. Ann Hematol 2024; 103:1493-1511. [PMID: 37951852 DOI: 10.1007/s00277-023-05459-0] [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: 07/05/2023] [Accepted: 09/17/2023] [Indexed: 11/14/2023]
Abstract
Recent advancements have focused on enhancing factor VIII half-life and refining its delivery methods, despite the well-established knowledge that factor VIII deficiency is the main clotting protein lacking in hemophilia. Consequently, both viral and non-viral delivery systems play a crucial role in enhancing the quality of life for hemophilia patients. The utilization of viral vectors and the manipulation of non-viral vectors through targeted delivery are significant advancements in the field of cellular and molecular therapies for hemophilia. These developments contribute to the progression of treatment strategies and hold great promise for improving the overall well-being of individuals with hemophilia. This review study comprehensively explores the application of viral and non-viral vectors in cellular (specifically T cell) and molecular therapy approaches, such as RNA, monoclonal antibody (mAb), and CRISPR therapeutics, with the aim of addressing the challenges in hemophilia treatment. By examining these innovative strategies, the study aims to shed light on potential solutions to enhance the efficacy and outcomes of hemophilia therapy.
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Affiliation(s)
- Ali Rajabi Zangi
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, 5166-15731, Iran
| | - Ala Amiri
- Department of Biotechnology, Faculty of Biological Sciences, Alzahra University, Tehran, Iran
| | - Pouya Pazooki
- Cellular and Molecular Biology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Fatemeh Soltanmohammadi
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, 5166-15731, Iran
| | - Hamed Hamishehkar
- Drug Applied Research Center, Tabriz University of Medical Science, Tabriz, 5166-15731, Iran
| | - Yousef Javadzadeh
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, 5166-15731, Iran.
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Abshire TC. A treatment bridge for infants with hemophilia. Blood 2024; 143:1317-1318. [PMID: 38573607 DOI: 10.1182/blood.2023023576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2024] Open
Affiliation(s)
- Thomas C Abshire
- Versiti Blood Research Institute and Medical College of Wisconsin
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Lawton SM, Manson MA, Fan MN, Chao TY, Chen CY, Kim P, Campbell C, Cai X, Vander Kooi A, Miao CH. Ultrasound-mediated gene delivery specifically targets liver sinusoidal endothelial cells for sustained FVIII expression in hemophilia A mice. Mol Ther 2024; 32:969-981. [PMID: 38341614 DOI: 10.1016/j.ymthe.2024.02.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 12/30/2023] [Accepted: 02/07/2024] [Indexed: 02/12/2024] Open
Abstract
The ability to target the native production site of factor VIII (FVIII)-liver sinusoidal endothelial cells (LSECs)-can improve the outcome of hemophilia A (HA) gene therapy. By testing a matrix of ultrasound-mediated gene delivery (UMGD) parameters for delivering a GFP plasmid into the livers of HA mice, we were able to define specific conditions for targeted gene delivery to different cell types in the liver. Subsequently, two conditions were selected for experiments to treat HA mice via UMGD of an endothelial-specific human FVIII plasmid: low energy (LE; 50 W/cm2, 150 μs pulse duration) to predominantly target endothelial cells or high energy (HE; 110 W/cm2, 150 μs pulse duration) to predominantly target hepatocytes. Both groups of UMGD-treated mice achieved persistent FVIII activity levels of ∼10% over 84 days post treatment; however, half of the HE-treated mice developed low-titer inhibitors while none of the LE mice did. Plasma transaminase levels and histological liver examinations revealed minimal transient liver damage that was lower in the LE group than in the HE group. These results indicate that UMGD can safely target LSECs with a lower-energy condition to achieve persistent FVIII gene expression, demonstrating that this novel technology is highly promising for therapeutic correction of HA.
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Affiliation(s)
| | | | - Meng-Ni Fan
- Seattle Children's Research Institute, Seattle, WA, USA
| | - Ting-Yen Chao
- Seattle Children's Research Institute, Seattle, WA, USA
| | - Chun-Yu Chen
- Seattle Children's Research Institute, Seattle, WA, USA
| | - Peter Kim
- Seattle Children's Research Institute, Seattle, WA, USA
| | | | - Xiaohe Cai
- Seattle Children's Research Institute, Seattle, WA, USA
| | | | - Carol H Miao
- Seattle Children's Research Institute, Seattle, WA, USA; University of Washington, Seattle, WA, USA.
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Castaman G, Jimenez-Yuste V, Gouw S, D'Oiron R. Outcomes and outcome measures. Haemophilia 2024; 30 Suppl 3:112-119. [PMID: 38504408 DOI: 10.1111/hae.14990] [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: 01/19/2024] [Revised: 02/28/2024] [Accepted: 03/01/2024] [Indexed: 03/21/2024]
Abstract
INTRODUCTION Advances in haemophilia treatment have resulted in a near-normal life expectancy, lower burden of bleeding and treatment, and improved quality of life in high-income countries. Bleeding rate is approaching zero and novel parameters should be evaluated to assess the efficacy of treatment not only from the clinical point of view by using new methodologies (e.g. joint health assessment), but also from the patient's perspective (e.g. pain, quality of life, treatment satisfaction). METHODS AND RESULTS This approach should be aimed at combining objective clinical methodologies and patient-reported outcomes (PROs). However, some instruments used for assessing PROs are still suboptimal and not properly validated. Recent evidence suggests that these tools can take advantage from a more personalized designed approach and could be effectively improved and serve to facilitate the patient's self-evaluation. For other congenital bleeding disorders (BDs), a set of patient-relevant outcomes has been also defined that overlap substantially those of haemophilia, including bleeding, side effects and complications, and PROs, such as pain, physical functioning, impact on daily life including school and work and mental health. There is a growing focus on addressing women-specific outcomes in BDs, reflecting an increased awareness of the unique challenges faced by women in this context. However, the development of tailored tools is imperative to further advance the progress in managing women with BDs, ensuring more accurate monitoring and personalized care. CONCLUSIONS How incorporating these outcome measures in the process of approval of novel treatments for these disorders by regulatory authorities remains to be established.
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Affiliation(s)
- Giancarlo Castaman
- Center for Bleeding Disorders and Coagulation, Department of Oncology, Careggi University Hospital, Florence, Italy
| | | | - Samanta Gouw
- Department of Paediatric Haematology, Emma Children's Hospital, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Roseline D'Oiron
- Bicêtre Hospital AP-HP, University of Paris-Saclay and UMR_S1176 INSERM, Le Kremlin-Bicêtre, Paris, France
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Cutica I, Mortarino M, Garagiola I, Pravettoni G, Peyvandi F. Knowledge and attitudes toward gene therapy of a cohort of Italian patients with hemophilia. J Thromb Haemost 2024; 22:1001-1008. [PMID: 38142845 DOI: 10.1016/j.jtha.2023.12.018] [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: 08/09/2023] [Revised: 12/06/2023] [Accepted: 12/11/2023] [Indexed: 12/26/2023]
Abstract
BACKGROUND Gene therapy (GT) has recently become a new therapeutic option for hemophilia A and B. However, patient levels of knowledge and attitudes toward it are poorly understood. A general lack of knowledge and education has been highlighted in previous studies. To date, no studies focused on patient attitudes toward GT, priorities, concerns, and information needs, nor how these factors might influence their willingness to accept it. OBJECTIVES To evaluate knowledge and attitudes toward GT of an Italian cohort of patients with hemophilia. METHODS A questionnaire was administered to patients with hemophilia A and B to evaluate: (1) clinical data; (2) GT knowledge; (3) willingness to accept GT, perceived benefits and concerns, and information needs. RESULTS Eighty-five patients participated in the study; 64 with severe hemophilia A and 4 with severe hemophilia B. Participants appeared to know only general information on GT, but little about its detailed functioning. The avoidance of frequent infusions and the reduction of bleeding episodes seem to be the most relevant expected benefits. The possibility of failing or losing effectiveness of GT over time was the main concern. Regarding willingness to undergo GT, 54.4% of respondents gave a negative response, mainly due to fear that treatment will lose effectiveness over time, fear of side effects, and lack of GT knowledge. Greater knowledge increased the acceptability of this disruptive therapy among patients with severe hemophilia. CONCLUSION Overall, Italian patients with hemophilia showed poor knowledge of GT. However, it seems that greater knowledge was associated with a greater willingness to have GT.
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Affiliation(s)
- Ilaria Cutica
- Department of Oncology and Hemato-oncology, University of Milan, Milan, Italy
| | - Mimosa Mortarino
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico Angelo Bianchi Bonomi Hemophilia and Thrombosis Centre and Fondazione Luigi Villa, Milan, Italy
| | - Isabella Garagiola
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico Angelo Bianchi Bonomi Hemophilia and Thrombosis Centre and Fondazione Luigi Villa, Milan, Italy
| | - Gabriella Pravettoni
- Department of Oncology and Hemato-oncology, University of Milan, Milan, Italy; Applied Research Division for Cognitive and Psychological Science, IEO, European Institute of Oncology IRCCS, Milan, Italy
| | - Flora Peyvandi
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico Angelo Bianchi Bonomi Hemophilia and Thrombosis Centre and Fondazione Luigi Villa, Milan, Italy; Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy.
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Crilly E, Harrison C, Maahs J, Beijlevelt M, Ramsay B, Githinji C, Sisdelli M, Dsouza A. Riding the wave of change: Providing solid ground to support nursing with patient transitions to novel haemophilia therapies. Haemophilia 2024; 30 Suppl 3:135-139. [PMID: 38549492 DOI: 10.1111/hae.15003] [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: 01/16/2024] [Revised: 03/05/2024] [Accepted: 03/06/2024] [Indexed: 04/22/2024]
Abstract
INTRODUCTION Haemophilia nursing practice has experienced a shift in the past decade, as the historic chief focus on factor infusions shifted to extended half-life products, bispecific antibody therapies and other non-replacement therapies. This evolution has driven a need for changes in nursing practice in many haemophilia treatment centres. AIM This article intends to provide insights to the haemophilia nurse to champion practice changes at their haemophilia treatment centres. METHODS Two popular change theories, Lewin's three-step change model and Kotter's eight-step change model are discussed as a framework for haemophilia nurses to think, structure and be leaders in change. CONCLUSION Examples of these models in practice could give guidance and examples to reflect on for haemophilia nurses needing to make changes in their practice settings. These models of change, alongside existing haemophilia nurse competencies and tools such as the shared decision-making tool from the World Federation of Hemophilia, can assist the nurse to be a capable change agent to usher in these new innovations.
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Affiliation(s)
- Erica Crilly
- Division of Paediatric Hematology/Oncology/BMT, Vancouver, British Columbia, Canada
| | - Cathy Harrison
- Sheffield Haemophilia & Thrombosis Centre, Royal Hallamshire Hospital, Sheffield, UK
| | - Jennifer Maahs
- Indiana Hemophilia and Thrombosis Center, Indianapolis, Indiana, USA
| | - Marlene Beijlevelt
- Hemophilia Treatment Centre, Amsterdam University Medical Centre, Amsterdam, Amsterdam, Netherlands
| | - Brian Ramsay
- Wellington Blood and Cancer Centre, Wellington Regional Hospital, Wellington, New Zealand
| | - Cyrus Githinji
- Moi Teaching & Referral Hospital, AMPATH Programs, Eldoret, Kenya
| | - Marcela Sisdelli
- Fundação Hemocentro de Ribeirão Preto, Ribeirão Preto-SP, Brazil
| | - Anjalin Dsouza
- Manipal College of Nursing, Manipal Academy of Higher Education, Manipal, Karnataka, India
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P de Jong Y, Jacobson IM. Monitoring for liver cancer post-gene therapy-How much and how often? J Viral Hepat 2024; 31 Suppl 1:35-40. [PMID: 38606953 DOI: 10.1111/jvh.13898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Accepted: 11/04/2023] [Indexed: 04/13/2024]
Abstract
Hepatocellular carcinoma (HCC) has long been recognized as a complication in people with chronic liver disease, particularly those with cirrhosis. Two gene therapies for haemophilia A and B recently approved in Europe and the US utilize adeno-associated virus (AAV) vectors designed to target hepatocytes. A number of other AAV gene therapies are undergoing clinical investigation for both liver and extrahepatic diseases, many of which likely transduce hepatocytes as well. Although AAV vectors predominantly persist in episomal forms, concerns about insertional mutagenesis have arisen due to findings in pre-clinical models and in a small subset of human HCC cases featuring wild-type AAV integrations in proximity to potential oncogenes. Despite the absence of any causative link between AAV vector therapy and HCC in approved extrahepatic gene therapies or haemophilia gene therapy trials, the package inserts for the recently approved haemophilia gene therapies advise HCC screening in subsets of individuals with additional risk factors. In this review, we discuss HCC risk factors, compare various screening modalities, discuss optimal screening intervals, and consider when to initiate and possibly discontinue screening. At this early point in the evolution of gene therapy, we lack sufficient data to make evidence-based recommendations on HCC screening. While AAV vectors may eventually be shown to be unassociated with risk of HCC, we presently favour a cautious approach that entails regular surveillance until such time as it is hopefully proven to be unnecessary.
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Affiliation(s)
- Ype P de Jong
- Weill Cornell Medical College, Rockefeller University, New York, New York, USA
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Maina A, Foster GR. Hepatitis after gene therapy, what are the possible causes? J Viral Hepat 2024; 31 Suppl 1:14-20. [PMID: 38606951 DOI: 10.1111/jvh.13919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 12/06/2023] [Accepted: 01/03/2024] [Indexed: 04/13/2024]
Abstract
Hepatitis is a common adverse event following gene therapy for haemophilia, often associated with a loss of transgene expression. Investigating the potential causes and implications of this is crucial for the overall success of treatment. Gene therapy trials using adeno-associated virus (AAV) vectors have demonstrated promising results marked by increases in factor FVIII and FIX levels and reductions in episodes of bleeding. However, hepatocellular injury characterised by elevations in alanine aminotransferases (ALT) has been noted. This liver injury is typically transient and asymptomatic, posing challenges in determining its clinical significance. Proposed causes encompass immune-mediated responses, notably T cell cytotoxicity in response to the AAV vector, direct liver injury from the viral capsid or transcribed protein via the unfolded protein response and pre-existing liver conditions. Liver biopsy data conducted years post-gene therapy infusion has shown sinusoidal infiltration without significant inflammation. The overall safety profile of gene therapy remains favourable with no evidence drug-induced liver injury (DILI) based on Hy's Law criteria. Essential pre-therapy monitoring and identifying patients at high risk of liver injury should involve liver function tests and non-invasive fibroscans, while novel blood-based biomarkers are under exploration. Further research is required to comprehend the mechanisms underlying transaminitis, loss of transgene expression and long-term effects on the liver, providing insights for optimising gene therapy for haemophilia.
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Tuddenham EGD, Foster GR. The complex, confusing and poorly understood immune responses to AAV-mediated gene transfer in haemophilia-Is more or less immunosuppression required? J Viral Hepat 2024; 31 Suppl 1:21-25. [PMID: 38606938 DOI: 10.1111/jvh.13934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 02/23/2024] [Accepted: 02/27/2024] [Indexed: 04/13/2024]
Abstract
Attempts to achieve a functional cure or amelioration of the severe X linked bleeding disorders haemophilia A (factor VIII deficiency) and haemophilia B (factor IX deficiency) using AAV-based vectors have been frustrated by immune responses that limit efficacy and durability. The immune responses include adaptive and innate pathways as well as cytokine mediated inflammation, especially of the target organ cells-hepatocytes. Immune suppression has only been partly effective in clinical trials at ameliorating the immune response and the lack of good animal models has delayed progress in identifying mechanisms and developing more effective approaches to controlling these effects of AAV gene transfer. Here we discuss the arguments for and against more potent immunosuppression to improve factor expression after AAV-mediated gene therapy.
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12
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Mahlangu J, Diop S, Lavin M. Diagnosis and treatment challenges in lower resource countries: State-of-the-art. Haemophilia 2024; 30 Suppl 3:78-85. [PMID: 38462793 DOI: 10.1111/hae.14956] [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: 12/31/2023] [Revised: 01/30/2024] [Accepted: 01/30/2024] [Indexed: 03/12/2024]
Abstract
The 2022 World Federation of Haemophilia Annual Global Survey (AGS) reports that 454,690 patients with inherited bleeding disorders (IBD) have been identified globally. While this represents noteworthy progress, haemophilia epidemiology data indicate that 75% of people with inherited bleeding disorders living in low-income and low-to-middle-income countries have yet to be diagnosed. The AGS also revealed that 11 billion clotting factor units are available to treat haemophilia A and B globally. Due to a lack of finance, these treatments are unavailable to haemophilia in low-income countries with a consequence lack of access equity for haemophilia treatment in these communities. This sobering reality is not limited to haemophilia but applies to von Willebrand Disease (VWD). While VWD is the most prevalent IBD, only 103,844 people living with this condition have been diagnosed globally. Of the diagnosed patients, only a fraction live in low- or middle-income countries. Moreover, the majority of VWD patients are still treated sub-optimally without replacement therapies or prophylaxis, both of which are now accepted as global standards of care. In this state-of-the-art review, the authors reflect on three issues. First, the minimum elements required to diagnose haemophilia in a resource-constrained setting are identified. Second, this review points to the critical stakeholders and outlines their roles in removing access to haemophilia treatment barriers. Finally, the authors examine von Willebrand disease's ongoing diagnostic and treatment challenges and compare these to haemophilia. With the rapidly evolving novel therapies, the therapeutic landscape of all IBD will likely change for the better.
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Affiliation(s)
- Johnny Mahlangu
- Department of Molecular Medicine and Haematology, Faculty of Health Sciences, University of the Witwatersrand, the National Health Laboratory Service, Johannesburg, South Africa
- Charlotte Maxeke Johannesburg Academic Hospital, Johannesburg, South Africa
| | - Saliou Diop
- Department of Hematology, University Cheikh Anta Diop, Dakar, Senegal
| | - Michelle Lavin
- National Coagulation Centre, St. James's Hospital, Dublin, Ireland
- Irish Centre for Vascular Biology, School of Pharmacy & Biomolecular Sciences, RCSI, Dublin, Ireland
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13
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Mancuso ME, Croteau SE, Klamroth R. Benefits and risks of non-factor therapies: Redefining haemophilia treatment goals in the era of new technologies. Haemophilia 2024; 30 Suppl 3:39-44. [PMID: 38481077 DOI: 10.1111/hae.14976] [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: 01/09/2024] [Revised: 02/21/2024] [Accepted: 02/21/2024] [Indexed: 04/22/2024]
Abstract
INTRODUCTION Over the last decades progress in haemophilia treatment has been remarkable and prophylaxis with clotting factor concentrates in haemophilia A and B has been established as the standard of care in individuals with haemophilia and a severe bleeding phenotype. Besides clotting factor products with prolonged half-life non-factor therapies were developed which enable prophylaxis via subcutaneous administration. Factor VIIIa mimetics like emicizumab facilitate the coagulation pathway and are used in routine clinical practice for indivdiduals with haemophilia A. Rebalancing therapeutic agents like fitusiran, concizumab, marstacimab and serpin PC block the anticoagulant pathway and clinical trials using these products in individuals with haemophilia A and B are ongoing. AIM AND METHODS A narrative review to asess the benefits and risks of non-factor therapies taking in to account re-defined haemophilia treatment goals. RESULTS Prophylaxis for prevention of bleeds using non-factor products by subcutaneous administration is effective and results in reductions of bleeding episodes in individuals with haemophilia A or B with and without inhibitors. The treatment with emicizumab showed tolerable safety both in clinical trials and long-term real-world observations with few thrombotic events. In some clinical trials with rebalancing therapies (fitusiran and concizumab) thrombotic events occurred. Monitoring of the haemostatic function of novel therapies especially with concomitant haemostatic treatment is not yet established. CONCLUSION With the advent of novel therapeutic agents including factor concentrates with ultra-long half-life and improved FVIIIa mimetics aimed at raising the bar of protection into the non-hemophilic range redefinition of haemophilia treatment goals is eagerly needed.
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Affiliation(s)
- Maria Elisa Mancuso
- Center for Thrombosis and Hemorrhagic Diseases, IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
- Humanitas University, Pieve Emanuele, Milan, Italy
| | - Stacy E Croteau
- Boston Children's Hospital, Boston Hemophilia Center, Harvard Medical School, Boston, USA
| | - Robert Klamroth
- Department of Internal Medicine, Hemophilia Treatment Center, Vivantes Klinikum im Friedrichshain, Berlin, Germany
- Institute of Experimental Hematology and Transfusion Medicine, University Hospital Bonn, Medical Faculty, University of Bonn, Bonn, Germany
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Miesbach W. Which patients should be considered for gene therapy. J Viral Hepat 2024; 31 Suppl 1:9-13. [PMID: 38606942 DOI: 10.1111/jvh.13900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Accepted: 11/10/2023] [Indexed: 04/13/2024]
Abstract
Gene therapy for haemophilia, utilizing adeno-associated viral vectors (AAVs) and coagulation factor genes, have demonstrated promising results, leading to recent approvals and introduction of the first gene therapy products into clinical practice. For successful and safe use, there are predefined inclusion and exclusion criteria, and the treatment process and associated risks should be thoroughly understood and long-term safety and efficacy carefully evaluated during follow up. As gene therapy becomes more accessible outside of clinical study centers, continuous evaluation of patient eligibility for subsequent AAV-based treatments becomes essential. Thorough evaluation of factors such as liver condition, anti-AAV status, and medical history ensures that gene therapy maximizing benefits while minimizing risks. Apart from fulfilling the established inclusion and exclusion criteria, the success of gene therapy is greatly influenced by the motivation and willingness of patients to accept temporary constraints, such as regular laboratory monitoring, potential use of immunosuppressants, and thorough documentation. Furthermore, various patient-related factors play a significant role in the management and outcomes of gene therapy, making a comprehensive evaluation essential. With the accumulation of more data, there is potential for the expansion of certain inclusion criteria, which may allow for a larger number of eligible patients to benefit from gene therapy. Empowering patients through shared decision-making enables them to thoroughly consider the therapy's potential benefits and risks.
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15
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Srivastava A. Defining success in haemophilia care - Are we doing it right? Haemophilia 2024; 30 Suppl 3:52-59. [PMID: 38498584 DOI: 10.1111/hae.14958] [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: 01/29/2024] [Accepted: 01/30/2024] [Indexed: 03/20/2024]
Abstract
INTRODUCTION Transformational advances have occurred in the management of haemophilia in the last decade leading to much better outcomes. However, a detailed and critical examination of its assessment and reporting show gaps in many aspects. These are discussed in this review. METHODS The relevant literature related to different aspects of management of haemophilia was reviewed to identify gaps which need to be addressed. These include detection and diagnosis of haemophilia, documentation and reporting of joint bleeding, its management and methods of reporting in clinical trials and practice, aspects of personalizing care as well as access to therapeutic products and the need for and organization of comprehensive care. RESULTS Current diagnostic approaches have more than doubled the identified number of persons with haemophilia (PWH) over the last 25 years but still constitute only ∼30% of the expected number. Joint bleeding is the primary indicator of disease severity and treatment efficacy, but there is lack of consistency and standardization in the way it is recorded and reported. Its continued use as an efficacy measure of modern treatments which maintain steady state factor levels or equivalence of >5% will lack sensitivity. The treatment of acute haemarthrosis has focussed on haemostasis and pain control, ignoring the role of inflammation in joint damage. Phenotypic heterogeneity of severe haemophilia has recognized clinical and laboratory variations based on haemostasis but not differences in local response to blood in the joint. At the organizational level, IU/capita provides a relevant measure of access to therapeutic products when the detection rate is ∼100% but is fallaciously low when detection rates are very low. With highly effective modern therapies for haemophilia and nearly no bleeding, the concept of comprehensive care team will need modifications. CONCLUSION As haemophilia care advances, a deeper dive is needed into the details of various aspects its management to ensure consistency and contemporary relevance.
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Affiliation(s)
- Alok Srivastava
- Department of Haematology, Christian Medical College Vellore, Vellore, Tamil Nadu, India
- Centre for Stem Cell Research, a Unit of inStem, Bengaluru, CMC Campus, Vellore, Tamil Nadu, India
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16
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Kaczmarek R, Miesbach W, Ozelo MC, Chowdary P. Current and emerging gene therapies for haemophilia A and B. Haemophilia 2024; 30 Suppl 3:12-20. [PMID: 38528615 DOI: 10.1111/hae.14984] [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: 01/16/2024] [Revised: 02/19/2024] [Accepted: 02/26/2024] [Indexed: 03/27/2024]
Abstract
INTRODUCTION After decades of stumbling clinical development, the first gene therapies for haemophilia A and B have been commercialized and have normalized factor (F)VIII and factor (F)IX levels in some individuals in the long term. Several other clinical programs testing adeno-associated viral (AAV) vector gene therapy are at various stages of clinical testing. DISCUSSION Multiyear follow-up in phase 1/2 and 3 studies showed long-term and sometimes curative but widely variable and unpredictable efficacy. Liver toxicities, mostly low-grade, occur in the 1st year in at least some individuals in all haemophilia A and B trials and are poorly understood. Wide variability and unpredictability of outcome and slow decline of FVIII levels are a major disadvantage because immune responses to AAV vectors preclude repeat dosing, which otherwise could improve suboptimal or restore declining expression, while overexpression may predispose to thrombosis. Long-term safety outcomes will need lifelong monitoring because AAV vectors infused at high doses integrate into chromosomes at rates that raise questions about potential oncogenicity and necessitate vigilance. Alternative gene transfer systems employing gene editing and/or non-viral vectors are under development and promise to overcome some limitations of the current state of the art for both haemophilia A and B. CONCLUSIONS AAV gene therapies for haemophilia have now become new treatment options but not universal cures. AAV is a powerful but imperfect gene transfer platform. Biobetter FVIII transgenes may help solve some problems plaguing gene therapy for haemophilia A. Addressing variability and unpredictability of efficacy, and delivery of gene therapy to ineligible patient subgroups may require different gene transfer systems, most of which are not ready for clinical translation yet but bring innovations needed to overcome the current limitations of gene therapy.
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Affiliation(s)
- Radoslaw Kaczmarek
- Wells Centre for Paediatric Research, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Wolfgang Miesbach
- Department of Haemostasis/Haemophilia Centre, Laboratory for Coagulation Disorders, University Hospital Frankfurt, Frankfurt, Germany
| | - Margareth C Ozelo
- Hemocentro UNICAMP, Department of Internal Medicine, School of Medical Sciences, University of Campinas, Campinas, SP, Brazil
| | - Pratima Chowdary
- Katharine Dormandy Haemophilia and Thrombosis Centre, Royal Free Hospital, London, UK
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17
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Bakeer N, Saied W, Gavrilovski A, Bailey C. Haemophilic arthropathy: Diagnosis, management, and aging patient considerations. Haemophilia 2024; 30 Suppl 3:120-127. [PMID: 38578694 DOI: 10.1111/hae.15004] [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: 01/12/2024] [Revised: 03/13/2024] [Accepted: 03/14/2024] [Indexed: 04/07/2024]
Abstract
Gene therapy and universal use of safer, more effective, and personalised prophylactic regimens (factor, and nonfactor) are expected to prevent joint bleeding and promote joint health in persons with haemophilia (PwH). Growing evidence suggests that subclinical bleeding, with active and inactive synovial proliferation, continues and haemophilic arthropathy remains a major morbidity in PwH despite early institution of joint prophylaxis. Joint health assessment is evolving with physical examination scores complementing imaging scores. Point-of-care ultrasound is emerging as a safe, cost-effective, and readily available tool for acute determination of musculoskeletal abnormalities, serial evaluation of joints for sonographic markers of haemophilic arthropathy, and in providing objective insight into the efficacy of new therapies. In acute haemarthrosis, arthrocentesis expedites recovery and prevent the vicious cycle of bleed-synovitis-rebleed. When synovial proliferation develops, a multidisciplinary team approach is critical with haematology, orthopaedics, and physiotherapy involvement. Synovectomy is considered for patients with chronic synovitis that fail conservative management. Non-surgical and minimally invasive procedures should always be offered and considered first. Careful patient selection, screening and early intervention increase the success of these interventions in reducing bleeding, pain, and improving joint function and quality of life. Chemical synovectomy is practical in developing countries, but radioactive synovectomy appears to be more effective. When surgical synovectomy is considered, arthroscopic/minimally invasive approach should be attempted first. In advanced haemophilic arthropathy, joint replacement and arthrodesis can be considered. While excited about the future of haemophilia management, navigating musculoskeletal challenges in the aging haemophilia population is equally important.
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Affiliation(s)
- Nihal Bakeer
- Indiana Haemophilia and Thrombosis Centre, Indianapolis, Indiana, USA
- Children's Hospital of Philadelphia, Pennsylvania, USA
| | - Walid Saied
- Department of Paediatric Orthopaedic Surgery, Children's Hospital "Bechir HAMZA", Medical School of Tunis, University Tunis-El Manar, Tunis, Tunisia
| | - Antonio Gavrilovski
- University Clinic for Orthopaedic Surgery-TOARILUC, Clinical Centre Mother Theresa Skopje, Skopje, North Macedonia
| | - Cindy Bailey
- Orthopaedic Haemophilia Treatment Centre at Orthopaedic Institute for Children Los Angeles, Los Angeles, California, USA
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18
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Sidonio RF, Weisel JW, Stafford D. Unresolved hemostasis issues in haemophilia. Haemophilia 2024; 30 Suppl 3:70-77. [PMID: 38575518 DOI: 10.1111/hae.14999] [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: 01/10/2024] [Revised: 03/04/2024] [Accepted: 03/04/2024] [Indexed: 04/06/2024]
Abstract
Despite rapid technological advancement in factor and nonfactor products in the prevention and treatment of bleeding in haemophilia patients, it is imperative that we acknowledge gaps in our understanding of how hemostasis is achieved. The authors will briefly review three unresolved issues in persons with haemophilia (PwH) focusing on the forgotten function that red blood cells play in hemostasis, the critical role of extravascular (outside circulation) FIX in hemostasis in the context of unmodified and extended half-life FIX products and finally on the role that skeletal muscle myosin plays in prothrombinase assembly and subsequent thrombin generation that could mitigate breakthrough muscle hematomas.
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Affiliation(s)
- Robert F Sidonio
- Hemophilia of Georgia Center for Bleeding and Clotting Disorders of CHOA, Atlanta, Georgia, USA
| | - John W Weisel
- University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | - Darrel Stafford
- University of North Carolina, Chapel Hill, North Carolina, USA
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19
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Makris M, Lassila R, Kennedy M. Challenges in ageing persons with haemophilia. Haemophilia 2024; 30 Suppl 3:5-11. [PMID: 38539058 DOI: 10.1111/hae.14994] [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: 01/11/2024] [Revised: 03/05/2024] [Accepted: 03/05/2024] [Indexed: 04/22/2024]
Abstract
As treatments for individuals with inherited bleeding disorders improve, life expectancy increases and is approaching that of the normal population. Concomitant with this we are now seeing the problems of ageing in the bleeding disorder population. Although the clear-cut association between low clotting factor levels and risk of bleeding is well recognised, a relationship between high levels, some non-factor therapies and thrombotic risk also exists. The management of thrombosis in persons with inherited bleeding disorders is complex but manageable with modern treatments and collaboration in decision making between health care professionals and patients. Despite the improvements in treatment and reduction in bleeding, mostly musculoskeletal pain continues to be a major issue with advancing age. The management of pain amongst older people with haemophilia who may have multiple comorbidities should involve a person-centred, holistic, multi-disciplinary approach to support and optimise long-term physical functioning and overall quality of life.
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Affiliation(s)
- Michael Makris
- School of Medicine and Population Health, University of Sheffield, Sheffield, UK
| | - Riitta Lassila
- Helsinki University Hospital, Department of Haematology, Coagulation Disorders Unit, Comprehensive Cancer Centre, Faculty of Medicine, Research Program Unit in Systems Oncology, University of Helsinki, Helsinki, Finland
| | - Megan Kennedy
- Discipline of Physiotherapy, School of Medicine, University of Dublin, Trinity College Dublin, Dublin, Ireland
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20
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Carcao M, Schiavulli M, Kulkarni R, Rendo P, Foster M, Santagostino E, Casiano S, Königs C. A post hoc analysis of previously untreated patients with severe hemophilia A who developed inhibitors in the PUPs A-LONG trial. Blood Adv 2024; 8:1494-1503. [PMID: 38266154 PMCID: PMC10951906 DOI: 10.1182/bloodadvances.2023011475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 01/10/2024] [Accepted: 01/14/2024] [Indexed: 01/26/2024] Open
Abstract
ABSTRACT Inhibitor development is a major therapeutic complication for people with hemophilia. The phase 3 PUPs A-LONG study evaluated the safety and efficacy of efmoroctocog alfa (a recombinant factor VIII Fc fusion protein, herein referred to as rFVIIIFc) in previously untreated patients (PUPs) with severe hemophilia A. Male PUPs <6 years old were enrolled and received rFVIIIFc; inhibitor development was the primary end point. Post hoc analyses, including patient treatment regimen patterns and timing of inhibitor development, descriptive and Kaplan-Meier analyses of time to first inhibitor-positive test by treatment regimen and by titer, and consumption, were performed to describe patients who developed inhibitors during PUPs A-LONG. We investigated patient characteristics (eg, demographics and genotype) and nongenetic risk factors (eg, intense factor exposure and central venous access device [CVAD] placement) that may predict inhibitor development and characteristics of inhibitor development (low-titer vs high-titer inhibitor). Baseline characteristics were similarly distributed for age, race, and ethnicity across both patients who were inhibitor-positive and those who were inhibitor-negative (all P > .05). High-risk F8 variants were associated with development of high-titer inhibitors (P = .028). High-titer inhibitor development was often preceded by the presence of a low-titer inhibitor. Patients whose low-titer inhibitor progressed to a high-titer inhibitor received a higher mean dose per infusion (98.4 IU/kg, n = 5) compared with those whose low-titer inhibitor resolved spontaneously (59.2 IU/kg, n = 7; P = .033) or persisted (45.0 IU/kg, n = 5; P = .047). There was no association between CVAD placement surgery and inhibitor development. Post hoc analyses suggest that F8 genotype and dose of factor are as important as inhibitor risk factors and require further investigation. This study was registered at ClinicalTrials.gov as #NCT02234323.
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Affiliation(s)
- Manuel Carcao
- Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
| | | | | | | | | | | | | | - Christoph Königs
- University Hospital Frankfurt, Goethe University, Frankfurt, Germany
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21
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Xiao R, Chen Y, Hu Z, Tang Q, Wang P, Zhou M, Wu L, Liang D. Identification of the Efficient Enhancer Elements in FVIII-Padua for Gene Therapy Study of Hemophilia A. Int J Mol Sci 2024; 25:3635. [PMID: 38612447 PMCID: PMC11011560 DOI: 10.3390/ijms25073635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 03/13/2024] [Accepted: 03/21/2024] [Indexed: 04/14/2024] Open
Abstract
Hemophilia A (HA) is a common X-linked recessive hereditary bleeding disorder. Coagulation factor VIII (FVIII) is insufficient in patients with HA due to the mutations in the F8 gene. The restoration of plasma levels of FVIII via both recombinant B-domain-deleted FVIII (BDD-FVIII) and B-domain-deleted F8 (BDDF8) transgenes was proven to be helpful. FVIII-Padua is a 23.4 kb tandem repeat mutation in the F8 associated with a high F8 gene expression and thrombogenesis. Here we screened a core enhancer element in FVIII-Padua for improving the F8 expression. In detail, we identified a 400 bp efficient enhancer element, C400, in FVIII-Padua for the first time. The core enhancer C400 extensively improved the transcription of BDDF8 driven by human elongation factor-1 alpha in HepG2, HeLa, HEK-293T and induced pluripotent stem cells (iPSCs) with different genetic backgrounds, as well as iPSCs-derived endothelial progenitor cells (iEPCs) and iPSCs-derived mesenchymal stem cells (iMSCs). The expression of FVIII protein was increased by C400, especially in iEPCs. Our research provides a novel molecular target to enhance expression of FVIII protein, which has scientific value and application prospects in both viral and nonviral HA gene therapy strategies.
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Affiliation(s)
| | | | | | | | | | | | | | - Desheng Liang
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha 410078, China; (R.X.); (Y.C.); (Z.H.); (M.Z.)
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22
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Kempton CL, Fedewa SA. Defining the impact of immune tolerance induction on clinically relevant outcomes in a US cohort of severe hemophilia A. Blood Adv 2024; 8:1190-1199. [PMID: 38163316 PMCID: PMC10910121 DOI: 10.1182/bloodadvances.2023011974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 11/21/2023] [Accepted: 11/21/2023] [Indexed: 01/03/2024] Open
Abstract
ABSTRACT Although the near-term benefit of immune tolerance induction (ITI) for the treatment of people with severe hemophilia A with inhibitor is apparent, the magnitude of the longer-term impact of ITI on clinical outcomes remains undefined. We examined the association between receiving ITI and the success of ITI on clinical outcomes including (1) clinical events, (2) health care use, (3) quality of life/function, (4) socioeconomic status, and (5) death, using the Community Counts (CC) registry of US Hemophilia Treatment Centers between 2013 and 2017. Multivariate logistic regression, negative binomial, and Poisson models were used. Included in this study were 3659 people with severe hemophilia A with median age of 21 years when entering the CC registry. Among 576 participants with inhibitors, 485 had received ITI (84%). ITI was successful in 299 (61.7%) and partially successful or failed in 95 (19.5%) or 91 (18.7%), respectively. Those that received ITI had fewer treated bleeds, less chronic pain, better function, and higher educational attainment than those not receiving ITI. Successful vs partially successful and failed ITI was associated with fewer treated bleeds, less health care use, less chronic pain, better function, and fewer missed days of school or work. Mortality was not associated with ITI, regardless of its success. Those with successful ITI had similar rates of treated bleeds, chronic pain, and health care use as those with no inhibitors. Undergoing ITI, particularly if successful, improved clinical outcomes but not mortality. These findings support decision making regarding initiation of ITI and inform future clinical trials.
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Affiliation(s)
- Christine L. Kempton
- Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta, GA
- Hemophilia of Georgia Center for Bleeding & Clotting Disorders of Emory, Emory University School of Medicine, Atlanta, GA
| | - Stacey A. Fedewa
- Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta, GA
- Hemophilia of Georgia Center for Bleeding & Clotting Disorders of Emory, Emory University School of Medicine, Atlanta, GA
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23
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Lee KT, Tan SK, Goh AS. Clinical characteristic and management of haemophilia patients in Malaysia: A single centre experience. Med J Malaysia 2024; 79:170-175. [PMID: 38553922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/02/2024]
Abstract
INTRODUCTION Haemophilia is one of the commonest inherited bleeding disorders which may lead to long term disabilities if not treated properly. Our aim of study is to understand the clinical characteristic, treatment and complications of adult haemophilia patients in our centre. MATERIALS AND METHODS A retrospective cross-sectional review of all adult haemophilia A (HA) or haemophilia B (HB) patients who received treatment in Hospital Pulau Pinang from January 2021 to December 2022 was conducted. Data was retrieved from patients' medical records. RESULTS A total of 75 haemophilia patients (64 HA and 11 HB) were included in this study with median age of 37 years (range 19 70). 42 of them had severe haemophilia (50% of HA, 91% of HB). All HB and 93.8% of severe HA patients were on prophylaxis. Six severe and one mild HA patients developed inhibitor with four of them currently on non-factor prophylaxis. 24 patients (32%) had prior hepatitis C infection and all of them have been successfully treated. The mean annual bleeding rate for severe haemophilia patients were 1.77 (SD ±3.6). Target joints were observed in 9.3% of patients with ankle joint (71.4%) being the most affected joint. More than one quarter (26.7%) of our patients have comorbidities with majority of them having hypertension (17/20), followed by diabetes mellitus (5/20) and ischemic heart disease (5/20). CONCLUSION Our study showed that a significant number of adult patients with haemophilia have comorbidities. Apart from optimising factor replacement therapy, future planning should include improvement in screening, risk modification and prevention of cardiovascular disease.
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Affiliation(s)
- K T Lee
- Hospital Pulau Pinang, Department of Medicine, Haematology Unit, Pulau Pinang, Malaysia.
| | - S K Tan
- Hospital Pulau Pinang, Department of Medicine, Haematology Unit, Pulau Pinang, Malaysia
| | - A S Goh
- Hospital Pulau Pinang, Department of Medicine, Haematology Unit, Pulau Pinang, Malaysia
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Leavitt AD, Konkle BA, Stine KC, Visweshwar N, Harrington TJ, Giermasz A, Arkin S, Fang A, Plonski F, Yver A, Ganne F, Agathon D, Resa MDLA, Tseng LJ, Di Russo G, Cockroft BM, Cao L, Rupon J. Giroctocogene fitelparvovec gene therapy for severe hemophilia A: 104-week analysis of the phase 1/2 Alta study. Blood 2024; 143:796-806. [PMID: 37871576 PMCID: PMC10933705 DOI: 10.1182/blood.2022018971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 09/20/2023] [Accepted: 09/25/2023] [Indexed: 10/25/2023] Open
Abstract
ABSTRACT Patients with hemophilia A require exogenous factor VIII (FVIII) or nonfactor hemostatic agents to prevent spontaneous bleeding events. Adeno-associated virus (AAV) vector-based gene therapy is under clinical investigation to enable endogenous FVIII production. Giroctocogene fitelparvovec is a recombinant AAV serotype 6 vector containing the coding sequence for the B-domain-deleted human F8 gene. In the ongoing phase 1/2, dose-ranging Alta study, 4 sequential cohorts of male participants with severe hemophilia A received a single IV dose of giroctocogene fitelparvovec. The primary end points are safety and changes in circulating FVIII activity. Interim results up to 214 weeks after treatment for all participants are presented. Eleven participants were dosed. Increases in alanine and aspartate aminotransferases were the most common treatment-related adverse events (AEs), which resolved with corticosteroid administration. Two treatment-related serious AEs (hypotension and pyrexia) were reported in 1 participant within 6 hours of infusion and resolved within 24 hours after infusion. At the highest dose level (3 × 1013 vg/kg; n = 5), the mean circulating FVIII activity level at week 52 was 42.6% (range, 7.8%-122.3%), and at week 104 it was 25.4% (range, 0.9%-71.6%) based on a chromogenic assay. No liver masses, thrombotic events, or confirmed inhibitors were detected in any participant. These interim 104-week data suggest that giroctocogene fitelparvovec is generally well tolerated with appropriate clinical management and has the potential to provide clinically meaningful FVIII activity levels, as indicated by the low rate of bleeding events in the highest dose cohort. This trial was registered at www.clinicaltrials.gov as #NCT03061201.
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Affiliation(s)
| | - Barbara A. Konkle
- Washington Center for Bleeding Disorders and the University of Washington, Seattle, WA
| | - Kimo C. Stine
- UAMS at Arkansas Children’s Hospital, Little Rock, AR
| | | | | | - Adam Giermasz
- Hemophilia Treatment Center, University of California Davis, Sacramento, CA
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25
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Zhao L, Fang S, Ma Y, Ren J, Hao L, Wang L, Yang J, Lu X, Yang L, Wang G. Targeted genome engineering based on CRISPR/Cas9 system to enhance FVIII expression in vitro. Gene 2024; 896:148038. [PMID: 38036077 DOI: 10.1016/j.gene.2023.148038] [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: 08/30/2023] [Revised: 11/13/2023] [Accepted: 11/27/2023] [Indexed: 12/02/2023]
Abstract
BACKGROUND Hemophilia A is caused by a deficiency of coagulation factor VIII in the body due to a defect in the F8 gene. The emergence of CRISPR/Cas9 gene editing technology will make it possible to alter the expression of the F8 gene in hemophiliacs, while achieving a potential cure for the disease. METHODS Initially, we identified high-activity variants of FVIII and constructed donor plasmids using enzymatic digestion and ligation techniques. Subsequently, the donor plasmids were co-transfected with sgRNA-Cas9 protein into mouse Neuro-2a cells, followed by flow cytometry-based cell sorting and puromycin selection. Finally, BDD-hF8 targeted to knock-in the mROSA26 genomic locus was identified and validated for FVIII expression. RESULTS We identified the p18T-BDD-F8-V3 variant with high FVIII activity and detected the strongest pX458-mROSA26-int1-sgRNA1 targeted cleavage ability and no cleavage events were found at potential off-target sites. Targeted knock-in of BDD-hF8 cDNA at the mROSA26 locus was achieved based on both HDR/NHEJ gene repair approaches, and high level and stable FVIII expression was obtained, successfully realizing gene editing in vitro. CONCLUSIONS Knock-in of exogenous genes based on the CRISPR/Cas9 system targeting genomic loci is promising for the research and treatment of a variety of single-gene diseases.
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Affiliation(s)
- Lidong Zhao
- Department of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan, China; Department of Hematology, Linfen Central Hospital, Linfen, Shanxi, China
| | - Shuai Fang
- Department of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan, China; The Shanxi Provincial Center for Disease Control and Prevention, Taiyuan, Shanxi, China
| | - Yanchun Ma
- Department of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Juan Ren
- Department of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Lixia Hao
- Department of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Lei Wang
- Department of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Jia Yang
- Department of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Xiaomei Lu
- Department of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Linhua Yang
- Department of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan, China.
| | - Gang Wang
- Department of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan, China.
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26
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Zhao JJ, Sun XY, Tian SN, Zhao ZZ, Yin MD, Zhao M, Zhang F, Li SA, Yang ZX, Wen W, Cheng T, Gong A, Zhang JP, Zhang XB. Decoding the complexity of on-target integration: characterizing DNA insertions at the CRISPR-Cas9 targeted locus using nanopore sequencing. BMC Genomics 2024; 25:189. [PMID: 38368357 PMCID: PMC10874558 DOI: 10.1186/s12864-024-10050-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 01/24/2024] [Indexed: 02/19/2024] Open
Abstract
BACKGROUND CRISPR-Cas9 technology has advanced in vivo gene therapy for disorders like hemophilia A, notably through the successful targeted incorporation of the F8 gene into the Alb locus in hepatocytes, effectively curing this disorder in mice. However, thoroughly evaluating the safety and specificity of this therapy is essential. Our study introduces a novel methodology to analyze complex insertion sequences at the on-target edited locus, utilizing barcoded long-range PCR, CRISPR RNP-mediated deletion of unedited alleles, magnetic bead-based long amplicon enrichment, and nanopore sequencing. RESULTS We identified the expected F8 insertions and various fragment combinations resulting from the in vivo linearization of the double-cut plasmid donor. Notably, our research is the first to document insertions exceeding ten kbp. We also found that a small proportion of these insertions were derived from sources other than donor plasmids, including Cas9-sgRNA plasmids, genomic DNA fragments, and LINE-1 elements. CONCLUSIONS Our study presents a robust method for analyzing the complexity of on-target editing, particularly for in vivo long insertions, where donor template integration can be challenging. This work offers a new tool for quality control in gene editing outcomes and underscores the importance of detailed characterization of edited genomic sequences. Our findings have significant implications for enhancing the safety and effectiveness of CRISPR-Cas9 gene therapy in treating various disorders, including hemophilia A.
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Affiliation(s)
- Juan-Juan Zhao
- State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, National Clinical Research Center for Blood Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300020, China
- Tianjin Institutes of Health Science, Tianjin, 301600, China
| | - Xin-Yu Sun
- State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, National Clinical Research Center for Blood Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300020, China
- Tianjin Institutes of Health Science, Tianjin, 301600, China
| | | | - Zong-Ze Zhao
- College of Computer Science and Technology, China University of Petroleum (East China), Qingdao, 266000, China
| | - Meng-Di Yin
- State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, National Clinical Research Center for Blood Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300020, China
- Tianjin Institutes of Health Science, Tianjin, 301600, China
| | - Mei Zhao
- State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, National Clinical Research Center for Blood Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300020, China
- Tianjin Institutes of Health Science, Tianjin, 301600, China
| | - Feng Zhang
- State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, National Clinical Research Center for Blood Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300020, China
- Tianjin Institutes of Health Science, Tianjin, 301600, China
| | - Si-Ang Li
- State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, National Clinical Research Center for Blood Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300020, China
- Tianjin Institutes of Health Science, Tianjin, 301600, China
| | - Zhi-Xue Yang
- State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, National Clinical Research Center for Blood Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300020, China
- Tianjin Institutes of Health Science, Tianjin, 301600, China
| | - Wei Wen
- State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, National Clinical Research Center for Blood Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300020, China
- Tianjin Institutes of Health Science, Tianjin, 301600, China
| | - Tao Cheng
- State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, National Clinical Research Center for Blood Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300020, China
- Tianjin Institutes of Health Science, Tianjin, 301600, China
| | - An Gong
- College of Computer Science and Technology, China University of Petroleum (East China), Qingdao, 266000, China.
| | - Jian-Ping Zhang
- State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, National Clinical Research Center for Blood Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300020, China.
- Tianjin Institutes of Health Science, Tianjin, 301600, China.
| | - Xiao-Bing Zhang
- State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, National Clinical Research Center for Blood Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300020, China.
- Tianjin Institutes of Health Science, Tianjin, 301600, China.
- Tianjin Medical University, Tianjin, China.
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Wang X, Li Z, Li L. The hemophilia quality of life scale: a systematic review. Front Public Health 2024; 12:1294188. [PMID: 38379674 PMCID: PMC10876851 DOI: 10.3389/fpubh.2024.1294188] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 01/22/2024] [Indexed: 02/22/2024] Open
Abstract
Purpose Quality of life refers to the degree of well-being a person feels. The development of a hemophilia-targeting quality of life scale is important for hemophiliacs and their treating physicians. Methods Textual analysis. First, a review of studies on quality of life, hemophilia and related quality of life scales was conducted; Subsequently, two rounds of systematic searches of the Springer database were conducted to filter the literature on universal quality of life scale studies and hemophilia-targeting quality of life scale studies by title and abstract, and then textual analysis was performed. Results The former included 77,456 articles, 26,117 chapters and 7,086 related bibliographies, while the latter initially retrieved 211 entries articles, 118 chapters and 43 related bibliographies. Through filtering, the former contains 22 documents, yielding 1,431 valid word stems, and the latter contains 9 documents, yielding 1,541 valid word stems. Conclusion While universal quality of life scales mostly fit into the broad framework of WHOQOL- BREF, the development of hemophilia-targeting quality of life scales inclines towards pains that patients suffer and technology advances in pharmaceutical. The current hemophilia QOL scales are mainly based on the HR-QoL, others mainly based on the HR-QoL as the master version. At the same time, the popularization of existing hemophilia quality of life scales in developing countries like China is not high, and the development of hemophilia quality of life scales is insufficient.
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Affiliation(s)
- Xin Wang
- School of Maritime Economics and Management, Dalian Maritime University, Dalian, China
| | - Zhixiao Li
- School of Labor and Human Resources, Renmin University of China, Beijing, China
| | - Lele Li
- School of Labor and Human Resources, Renmin University of China, Beijing, China
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Han Z, Yi X, Li J, Liao D, Gao G, Ai J. Efficacy and Safety of Adeno-Associated Virus-Based Clinical Gene Therapy for Hemophilia: A Systematic Review and Meta-Analysis. Hum Gene Ther 2024; 35:93-103. [PMID: 38185849 DOI: 10.1089/hum.2023.208] [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] [Indexed: 01/09/2024] Open
Abstract
Clinical trials of adeno-associated virus (AAV)-based gene therapy have made remarkable progress in recent years. We aimed to perform a systematic review and meta-analysis of the literature to assess the efficacy and safety of AAV-based gene therapy for hemophilia. We systematically searched the Web of Science, Embase, PubMed, and the Cochrane Database of Systematic Reviews databases, for clinical trials involving patients diagnosed with hemophilia and treated with AAV-mediated gene therapy. Data on the annualized bleeding rate (ABR), annualized infusion rate (AIR), the incidence of treatment-related adverse events (TRAEs), severe adverse events (SAEs), and alanine aminotransferase (ALT) elevation were extracted as our outcomes. A total of 12 articles from 11 clinical trials were selected from 868 articles for meta-analysis. Pooled analyses showed that AAV-based gene therapy in hemophilia patients reduced the number of bleeding events and the number of factor infusion events by an approximate average of 7 per year and 103 per year, respectively. Eighty percent, 18%, and 63% of hemophilia patients had elevated TRAE, SAE, and ALT levels, respectively. Moreover, subgroup analysis found a significant reduction in ABR and AIR 2-3 years after the therapy. Additional findings that were not pooled including coagulation factor activity are presented in the accompanying tables. Our analysis supported the efficacy and safety of AAV-mediated gene therapy for hemophilia, providing evidence for its application as a therapeutic option for widespread clinical use in hemophilia patients in the future.
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Affiliation(s)
- Zeyu Han
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, China
| | - Xianyanling Yi
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, China
| | - Jin Li
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, China
| | - Dazhou Liao
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, China
| | - Guangping Gao
- Horae Gene Therapy Center, University of Massachusetts Chan Medical School, Worcester, Massachusetts, USA
| | - Jianzhong Ai
- Department of Urology, Institute of Urology, West China Hospital, Sichuan University, Chengdu, China
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Borel-Derlon A. [Living with… hemophilia]. Rev Prat 2024; 74:176-178. [PMID: 38415423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/29/2024]
Affiliation(s)
- Annie Borel-Derlon
- Hématologue, présidente du conseil scientifique de l'Association française des hémophiles (AFH)
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30
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Li Y, Liu G, Wu R, Yu G. Oral health status and oral habits of children and adolescents with hemophilia: a report from the children's hemophilia comprehensive care center of China. Eur J Pediatr 2024; 183:897-902. [PMID: 37934283 PMCID: PMC10912247 DOI: 10.1007/s00431-023-05270-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Revised: 09/22/2023] [Accepted: 10/07/2023] [Indexed: 11/08/2023]
Abstract
In recent years, the diagnosis and treatment of hemophilic children in China has significantly improved. However, oral health conditions, which affect quality of life, haven't received attention in this population. To explore the oral health status and oral hygiene of children and adolescents with hemophilia in the Children's Hemophilia Comprehensive Care Center of China. Dental and oral hygiene examinations were performed in children and adolescents with hemophilia who visited Beijing Children's Hospital. DMFT/dmft (decayed, missing, filled teeth in permanent and primary teeth) was assessed according to World Health Organization (WHO) criteria. The simplified oral hygiene index (OHI-S) was used to evaluate the oral hygiene condition of the subjects. Questionnaires were completed by their parents. SPSS 21.0 was used for statistical analysis. A total of 114 children and adolescents were enrolled. The caries prevalence was 57.4%, 72.2% and 41.2% in primary, mixed and permanent dentitions respectively. The filling rates were 14.4%, 13.9%, and 11.4%, respectively, and the OHI-S scores of the three dentition groups were 1.49 ± 0.46, 1.57 ± 0.43, and 1.76 ± 0.46, respectively. A total of 103 valid questionnaires were collected. Sixty-nine children (67%) didn't brushed their teeth 2 times a day. Nearly half of the parents knew little about fluoride toothpaste. Multiple linear regression analysis revealed that brushing teeth with the help of parents had a significant positive impact on OHI-S. Conclusion: Dental health was unsatisfactory among hemophilic children and adolescents. The caries filling rates were low. Patients and their parents did not give much attention to oral health. What is Known: • Caries and gingivitis are the two main oral diseases that affect children with hemophilia. • However, the oral health conditions of children and adolescents with hemophilia have not received much attention in China. What is New: • This is the first study concentrating on the dental health of children with hemophilia in China. • Dental health was unsatisfactory among children and adolescents with hemophilia in China.
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Affiliation(s)
- Yue Li
- Department of Stomatology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Nanlishi Road 56, Xicheng District, Beijing, 100045, China
| | - Guoqing Liu
- Department of Hematology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, 100045, China
| | - Runhui Wu
- Department of Hematology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, 100045, China
| | - Guoxia Yu
- Department of Stomatology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Nanlishi Road 56, Xicheng District, Beijing, 100045, China.
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Weyand AC, Malec L, Pipe SW. Advancements in haemophilia A and health equity: is it time to redefine severity? Lancet Haematol 2024; 11:e90-e92. [PMID: 38302228 DOI: 10.1016/s2352-3026(23)00270-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 08/07/2023] [Accepted: 08/27/2023] [Indexed: 02/03/2024]
Affiliation(s)
- Angela C Weyand
- Department of Pediatrics, University of Michigan Medical School, Ann Arbor, MI 48109-5718, USA.
| | - Lynn Malec
- Blood Research Institute, Versiti, Milwaukee, Wisconsin, USA
| | - Steven W Pipe
- Department of Pediatrics, University of Michigan Medical School, Ann Arbor, MI 48109-5718, USA
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Kumar S, Schroeder JA, Shi Q. Platelet-targeted gene therapy induces immune tolerance in hemophilia and beyond. J Thromb Haemost 2024; 22:23-34. [PMID: 37558132 DOI: 10.1016/j.jtha.2023.07.025] [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: 04/10/2023] [Revised: 06/30/2023] [Accepted: 07/10/2023] [Indexed: 08/11/2023]
Abstract
Blood platelets have unique storage and delivery capabilities. Platelets play fundamental roles in hemostasis, inflammatory reactions, and immune responses. Beyond their functions, platelets have been used as a target for gene therapy. Platelet-targeted gene therapy aims to deliver a sustained expression of neo-protein in vivo by genetically modifying the target cells, resulting in a cure for the disease. Even though there has been substantial progress in the field of gene therapy, the potential development of immune responses to transgene products or vectors remains a significant concern. Of note, multiple preclinical studies using platelet-specific lentiviral gene delivery to hematopoietic stem cells in hemophilia have demonstrated promising results with therapeutic levels of neo-protein that rescue the hemorrhagic bleeding phenotype and induce antigen-specific immune tolerance. Further studies using ovalbumin as a surrogate protein for platelet gene therapy have shown robust antigen-specific immune tolerance induced via peripheral clonal deletions of antigen-specific CD4- and CD8-T effector cells and induction of antigen-specific regulatory T (Treg) cells. This review discusses platelet-targeted gene therapy, focusing on immune tolerance induction.
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Affiliation(s)
- Saurabh Kumar
- Blood Research Institute, Versiti Wisconsin, Milwaukee, Wisconsin, USA
| | - Jocelyn A Schroeder
- Blood Research Institute, Versiti Wisconsin, Milwaukee, Wisconsin, USA; Department of Pediatrics, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Qizhen Shi
- Blood Research Institute, Versiti Wisconsin, Milwaukee, Wisconsin, USA; Department of Pediatrics, Medical College of Wisconsin, Milwaukee, Wisconsin, USA; Children's Research Institute, Children's Wisconsin, Milwaukee, Wisconsin, USA; Midwest Athletes Against Childhood Cancer (MACC) Fund Research Center Milwaukee, Wisconsin, USA.
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Ragni MV, Callis J, Daoud N, Hu B, Manuel M, Santos J, Schwartz J, Friedman KD, Kouides P, Kuriakose P, Leavitt AD, Lim MY, Machin N, Recht M, Chrisentery-Singleton T. Observational cohort study of long-term outcomes of liver transplantation in haemophilia. Haemophilia 2024; 30:87-97. [PMID: 38111071 DOI: 10.1111/hae.14910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 10/23/2023] [Accepted: 11/27/2023] [Indexed: 12/20/2023]
Abstract
INTRODUCTION Gene therapy is now a reality for individuals with haemophilia, yet little is known regarding the quality-of-life impact of factor correction. As few data exist, and recognizing the analogy to liver transplantation (OLTX), we identified OLTX+ and OLTX- men in the ATHNdataset to compare post-OLTX factor VIII and IX on quality of life (QoL) by Haem-A-QoL and PROMIS-29. METHODS OLTX- were matched to OLTX+ by age, race, and haemophilia type and severity. Deidentified demographic data, including post-transplant factor levels, genotype and target joint disease were analysed by descriptive statistics. Haem-A-Qol and PROMIS-29 were compared in OLTX+ and OLTX- by student's t-test and univariate regression models. RESULTS Of 86 people with haemophilia A (HA) or haemophilia B (HB) cared for at 10 haemophilia treatment centers (HTCs), 21 (24.4%) OLTX+ and 65 (75.6%) OLTX- were identified. OLTX+ and OLTX- had a similar frequency of target joint disease (p = .806), HA genotypes, null versus non-null (p = .696), and HIV infection (p = .316). At a median 9.2 years post-OLTX, median FVIII, .63 IU/mL [IQR 0.52-0.97] and FIX, .91 IU/mL [IQR .63-1.32], Haem-A-QoL, PROMIS-29, and HOT scores were comparable. Severe HA/HB had lower post-OLTX 'dealing with haemophilia' scores (p = .022) and higher 'sports and leisure' (p = .010) and 'view of yourself' scores (p = .024) than OLTX+ non-severe participants. Non-caucasian OLTX+ had significantly lower scores in sports and leisure (p = .042), future expectations (p = .021) and total score (p = .010). CONCLUSION Nine years after OLTX, QoL is comparable to OLTX-, but significantly better in OLTX+ with severe than non-severe disease and in caucasians than non-caucasians.
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Affiliation(s)
- Margaret V Ragni
- Department of Medicine, Division of Hematology/Oncology, University of Pittsburgh Medical Center, and Hemophilia Center of Western PA, Pittsburgh, Pennsylvania, USA
| | - Jessica Callis
- American Thrombosis Hemostasis Network, Rochester, New York, USA
| | - Nabil Daoud
- American Thrombosis Hemostasis Network, Rochester, New York, USA
| | - Brian Hu
- American Thrombosis Hemostasis Network, Rochester, New York, USA
| | - Matthew Manuel
- American Thrombosis Hemostasis Network, Rochester, New York, USA
| | - Jarren Santos
- American Thrombosis Hemostasis Network, Rochester, New York, USA
| | | | | | - Peter Kouides
- Mary M. Gooley Hemophilia Center, Rochester, New York, USA
| | - Philip Kuriakose
- Henry Ford Health System Bleeding and Thrombosis Center, Detroit, Michigan, USA
| | - Andrew D Leavitt
- San Francisco Hemophilia Treatment Center, University of California, San Francisco, California, USA
| | - Ming Y Lim
- Utah Center for Bleeding and Clotting Disorders, Salt Lake City, Utah, USA
| | - Nicoletta Machin
- Department of Medicine, Division of Hematology/Oncology, University of Pittsburgh Medical Center, and Hemophilia Center of Western PA, Pittsburgh, Pennsylvania, USA
| | - Michael Recht
- American Thrombosis Hemostasis Network, Rochester, New York, USA
- Yale University Medical Center, New Haven, Connecticut, USA
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Yared G, Tachdjian A, El Kazwini MEJ, Azzi J, El Hajjar C, Ghazal K. A case study on using an intrauterine foley catheter to reduce postpartum bleeding in a patient with hemophilia. Int J Gynaecol Obstet 2024; 164:347-348. [PMID: 37753875 DOI: 10.1002/ijgo.15123] [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: 06/15/2023] [Revised: 08/17/2023] [Accepted: 08/27/2023] [Indexed: 09/28/2023]
Abstract
SynopsisCase of a pregnant patient suffering from severe hemophilia A who had effective uterine foley tamponade to treat postpartum hemorrhage.
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Affiliation(s)
| | - Annie Tachdjian
- Obstetrics and Gynecology Department, Faculty of Public Health, Lebanese University, Beirut, Lebanon
| | | | - Joelle Azzi
- Pharmacist Department, Faculty of Public Health, Lebanese University, Beirut, Lebanon
| | - Charlotte El Hajjar
- Obstetrics and Gynecology Department, Rafik Hariri Hospital University Medical Center, Beirut, Lebanon
- Obstetrics and Gynecology Department, Al Zahraa Hospital University Medical Centre, Beirut, Lebanon
| | - Kariman Ghazal
- Obstetrics and Gynecology Department, Al Zahraa Hospital University Medical Centre, Beirut, Lebanon
- Obstetrics and Gynecology Department, Faculty of Medical Sciences, Lebanese University, Beirut, Lebanon
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Ay C, Frenzel L, Pinachyan K, Le Quellec S. Gene therapy for haemophilia A and B, from basic principles to clinical implementation: An illustrated review. Haemophilia 2024; 30:5-15. [PMID: 38111029 DOI: 10.1111/hae.14907] [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: 07/17/2023] [Revised: 11/21/2023] [Accepted: 11/28/2023] [Indexed: 12/20/2023]
Abstract
INTRODUCTION With recent approval of the first two gene therapies for haemophilia A and B, educational materials about AAV-based gene therapy are needed by the haemophilia community for a better understanding of this novel therapeutic approach and helping healthcare providers and patients making personalized choices amongst an increasing array of therapeutic options. AIM To provide a comprehensive summary of the whole process of AAV-based gene therapy from basic principles to clinical implementation through an illustrated review. METHODS The authors, with expertise in and knowledge about gene therapy for haemophilia A and B, reviewed relevant articles from PubMed database and translated them into illustrations. RESULTS The review is divided into eight illustrated sections providing an overview of gene therapy for haemophilia A and B from haemophilia basics and current treatment landscape, principles of the AAV-based liver-directed gene therapy, through exploring the efficacy and safety results of published phase III clinical trials, current and future challenges, to implementation in clinical practice, including the hub and spoke models and the patient journey. CONCLUSION This illustrated review educates healthcare professionals on AAV-based gene therapy for haemophilia A and B enabling them to further educate their peers and their patients.
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Affiliation(s)
- Cihan Ay
- Department of Medicine I, Clinical Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - Laurent Frenzel
- Laboratory of Cellular and Molecular Mechanisms of Hematological Disorders and Therapeutical Implications, Labex GR-Ex, Imagine Institute, Inserm, Paris Descartes - Sorbonne Paris Cité University, Paris, France
- Hematology unit care, Hemophilia Center, Necker Hospital, Paris, France
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Pietu G, Giraud N, Chamouard V, Duport G, Lienhart A, Dargaud Y. Perspectives and perception of haemophilia gene therapy by French patients. Haemophilia 2024; 30:68-74. [PMID: 38058235 DOI: 10.1111/hae.14908] [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: 07/26/2023] [Revised: 11/20/2023] [Accepted: 11/27/2023] [Indexed: 12/08/2023]
Abstract
INTRODUCTION AND AIM A national survey was initiated by representatives of French patients with haemophilia (AFH) and the French reference centre for haemophilia, in order to appreciate the awareness and knowledge of these patients regarding haemophilia gene therapy (HGT) and understand better their position about this innovative treatment that will soon become available. RESULTS Of 143 answers received, 137 could be analysed, representing about 3.5% of patients with severe or moderate haemophilia over 16year-old. They were 80.3% with haemophilia A and 19.7 % with haemophilia B, with a severe form of the disease for 80.3 % of them. Curiosity for HGT was formulated by 64.2% of the participants, 33.6 % being interested by this approach as soon as it will be available and 38.7 % preferring to wait until more patients have been treated. Only 3.6 % of the participants would never consider receiving HGT. The level of awareness and knowledge was estimated to be limited by 39.5 % of the patients. More than 60 % of them declared having never or almost never discussed HGT with the team of their haemophilia centre. Before deciding to get HGT, 54.4 % of the participants considered that it will be very important to compare it with their current treatment and 53.7 % would like to be better informed by their care providers. CONCLUSIONS These results highlight the need for training and education for patients, but also for professionals at haemophilia centres, about HGT and the shared decision-making process. Objective, unbiased and transparent information must be available for patients about this very promising therapy which nonetheless carries more uncertainty and unknowns compared to other haemophilia treatments.
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Affiliation(s)
| | | | - Valérie Chamouard
- Centre de Référence de l'Haémophilie, Unité d'Hémostase Clinique, Hôpital Louis Pradel, Hospices Civils de Lyon, Lyon, France
| | | | - Anne Lienhart
- Centre de Référence de l'Haémophilie, Unité d'Hémostase Clinique, Hôpital Louis Pradel, Hospices Civils de Lyon, Lyon, France
| | - Yesim Dargaud
- Centre de Référence de l'Haémophilie, Unité d'Hémostase Clinique, Hôpital Louis Pradel, Hospices Civils de Lyon, Lyon, France
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Volland L, Nichols C, Santaella ME, Lambing A, Nammacher K, Frick N. A pilot study of US HTC physical therapists' concordance of PT MASAC recommendations and educational needs. Haemophilia 2024; 30:169-179. [PMID: 38044083 DOI: 10.1111/hae.14900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Accepted: 11/07/2023] [Indexed: 12/05/2023]
Abstract
INTRODUCTION Physical therapists (PTs) are essential providers within the Hemophilia Treatment Centers (HTCs) team caring for persons with inherited blood disorders (PWBD). OBJECTIVE Little is known regarding PTs understanding and concordance of MASAC PT Recommendations (MASAC#238), educational resources used to maintain competency and support for a mentorship programme. METHODS PTs at federally funded HTCs were eligible to participate in a descriptive non-validated study exploring: (i) demographics, (ii) educational background, (iii) experience in evaluation and treatment of PWBD, (iv) practice patterns indicative of concordance with MASAC#238 and (v) opinion regarding PT mentorship. RESULTS Respondents experience caring for PWBD ranged 1-36 years, treating both adults and children. Although most acknowledged awareness of MASAC#238, dropout (14/44, 31.8%) was noted; 28/30 (93.3%) who continued were aware of the recommendations. Level of concordance with MASAC#238 varied (range 64.3%-96.2%) regarding: signs/symptoms, treatment of muscle/joint bleeding and pre/post synovectomy and knee replacement treatment. Many PTs identified patients as individual and unique, thus not all recommendations may apply. PTs utilised available educational programmes. No relationships were noted regarding years of practice, education and years caring for PWBD. All respondents favoured a mentorship programme citing benefits, but also outlined barriers. CONCLUSIONS Provision of necessary financial support for optimal function of a full-time PT within the HTC can enhance standards of care for PWBD. Supporting educational opportunities may enhance concordance with current MASAC PT Recommendations. Respondents valued development of a structured, hands-on mentorship programme. MASAC#23 has recently been updated in May 2023 to MASAC#275.
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Affiliation(s)
- Lena Volland
- National Bleeding Disorders Foundation (NBDF), New York, New York, USA
| | - Cindy Nichols
- National Bleeding Disorders Foundation (NBDF), New York, New York, USA
- Munson Medical Center, Traverse City, Michigan, USA
| | - Maria E Santaella
- National Bleeding Disorders Foundation (NBDF), New York, New York, USA
| | | | - Kate Nammacher
- National Bleeding Disorders Foundation (NBDF), New York, New York, USA
| | - Neil Frick
- National Bleeding Disorders Foundation (NBDF), New York, New York, USA
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Chuansumrit A, Youttananukorn W, Sirachainan N, Natesirinilkul R, Ruchutrakool T. Direct data transfer of people with hereditary bleeding disorders from the Thai haemophilia treatment centre registry to the Annual Global Survey of the World Federation of Hemophilia. Haemophilia 2024; 30:245-248. [PMID: 37932878 DOI: 10.1111/hae.14897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 10/24/2023] [Accepted: 10/27/2023] [Indexed: 11/08/2023]
Affiliation(s)
- Ampaiwan Chuansumrit
- Department of Pediatrics, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | | | - Nongnuch Sirachainan
- Department of Pediatrics, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | | | - Theera Ruchutrakool
- Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
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Hou PX, Yang RC. [Recent advances in the replacement therapy for Hemophilia]. Zhonghua Xue Ye Xue Za Zhi 2023; 44:1052-1056. [PMID: 38503535 PMCID: PMC10834880 DOI: 10.3760/cma.j.issn.0253-2727.2023.12.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Indexed: 03/21/2024]
Affiliation(s)
- P X Hou
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin Key Laboratory of Gene Therapy for Blood Diseases, CAMS Key Laboratory of Gene Therapy for Blood Diseases, Tianjin 300020, China Tianjin Institutes of Health Science, Tianjin 301600, China
| | - R C Yang
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin Key Laboratory of Gene Therapy for Blood Diseases, CAMS Key Laboratory of Gene Therapy for Blood Diseases, Tianjin 300020, China Tianjin Institutes of Health Science, Tianjin 301600, China
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Platton S. Diagnosis and laboratory monitoring of hemophilia A. Hematology Am Soc Hematol Educ Program 2023; 2023:11-18. [PMID: 38066923 PMCID: PMC10727114 DOI: 10.1182/hematology.2023000460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2023]
Abstract
Acquired hemophilia A (AHA) is a rare disorder in which autoantibodies against factor VIII (FVIII) lead to a bleeding phenotype that varies from life-threatening to no bleeding at all. Prolonged activated partial thromboplastin times (APTT) in patients with a bleeding phenotype should be investigated to rule out AHA and should never be ignored in a preprocedure patient. Most inhibitors in AHA are heat and time dependent, so mixing studies performed only on an immediate mix are not useful: both lupus anticoagulants and treatment with direct oral anticoagulants can coexist with AHA and confound the diagnosis. Assays for intrinsic coagulation factors and von Willebrand factor should always be performed, regardless of the results of mixing studies. A Bethesda or modified Bethesda assay should be performed to quantify any inhibitor, and if susoctocog alfa (rpFVIII) is available, then an assay for cross-reacting antibodies should also be performed. At diagnosis and until complete remission, if the FVIII in the patient sample is >5 IU/dL, heat inactivation should be performed before the inhibitor assays are performed. While there are no conventional tests available to measure the effects of FVIII bypassing therapies, newer therapies may require monitoring, or their effects may need to be considered when choosing appropriate assays. Measurement of rpFVIII requires a 1-stage clotting assay, and measurement of patient FVIII while on emicizumab requires a chromogenic assay that does not contain human FX. Close communication is required between the treating clinicians and the laboratory to ensure that the correct tests are performed while patients are receiving treatments.
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Affiliation(s)
- Sean Platton
- The Royal London Hospital Haemophilia Centre, Bart Health NHS Trust, London, UK
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41
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James AH. Management of pregnant women who have bleeding disorders. Hematology Am Soc Hematol Educ Program 2023; 2023:229-236. [PMID: 38066866 PMCID: PMC10727034 DOI: 10.1182/hematology.2023000475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2023]
Abstract
Bleeding disorders, including von Willebrand disease (VWD), hemophilia, other coagulation factor deficiencies, platelet disorders, defects of fibrinolysis, and connective tissue disorders, have both maternal and fetal implications. Successful management of bleeding disorders in pregnant women requires not only an understanding of bleeding disorders but also an understanding of when and how bleeding occurs in pregnancy. Bleeding does not occur during a normal pregnancy with a healthy placenta. Bleeding occurs during pregnancy when there is an interruption of the normal utero-placental interface, during miscarriage, during an ectopic pregnancy, or at the time of placental separation at the conclusion of pregnancy. Although mild platelet defects may be more prevalent, the most commonly diagnosed bleeding disorder among women is VWD. Other bleeding disorders are less common, but hemophilia carriers are unique in that they are at risk of bleeding themselves and of giving birth to an affected male infant. General guidance for maternal management of a woman who is moderately or severely affected includes obtaining coagulation factor levels at a minimum in the third trimester; planning for delivery at a center with hemostasis expertise; and anticipating the need for hemostatic agents. General guidance for fetal management includes pre-pregnancy counseling; the option of preimplantation genetic testing for hemophilia; delivery at a tertiary care center with pediatric hematology and newborn intensive care; consideration of cesarean delivery of a potentially severely affected infant; and avoidance of invasive procedures such as scalp electrodes and operative vaginal delivery in any potentially affected infant.
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Affiliation(s)
- Andra H. James
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology; and Division of Hematology, Department of Medicine, Duke University Medical Center, Durham, NC
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Chen Z, Herzog RW, Kaufman RJ. Cellular stress and coagulation factor production: when more is not necessarily better. J Thromb Haemost 2023; 21:3329-3341. [PMID: 37839613 PMCID: PMC10760459 DOI: 10.1016/j.jtha.2023.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 10/11/2023] [Indexed: 10/17/2023]
Abstract
Remarkably, it has been 40 years since the isolation of the 2 genes involved in hemophilia A (HA) and hemophilia B (HB), encoding clotting factor (F) VIII (FVIII) and FIX, respectively. Over the years, these advances led to the development of purified recombinant protein factors that are free of contaminating viruses from human pooled plasma for hemophilia treatments, reducing the morbidity and mortality previously associated with human plasma-derived clotting factors. These discoveries also paved the way for modified factors that have increased plasma half-lives. Importantly, more recent advances have led to the development and Food and Drug Administration approval of a hepatocyte-targeted, adeno-associated viral vector-mediated gene transfer approach for HA and HB. However, major concerns regarding the durability and safety of HA gene therapy remain to be resolved. Compared with FIX, FVIII is a much larger protein that is prone to misfolding and aggregation in the endoplasmic reticulum and is poorly secreted by the mammalian cells. Due to the constraint of the packaging capacity of adeno-associated viral vector, B-domain deleted FVIII rather than the full-length protein is used for HA gene therapy. Like full-length FVIII, B-domain deleted FVIII misfolds and is inefficiently secreted. Its expression in hepatocytes activates the cellular unfolded protein response, which is deleterious for hepatocyte function and survival and has the potential to drive hepatocellular carcinoma. This review is focused on our current understanding of factors limiting FVIII secretion and the potential pathophysiological consequences upon expression in hepatocytes.
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Affiliation(s)
- Zhouji Chen
- Degenerative Diseases Program, Center for Genetic Diseases and Aging Research, SBP Medical Discovery Institute, California, USA
| | - Roland W Herzog
- Department of Pediatrics, Herman B Wells Center for Pediatric Research, Indiana University, Indianapolis, Indiana, USA
| | - Randal J Kaufman
- Degenerative Diseases Program, Center for Genetic Diseases and Aging Research, SBP Medical Discovery Institute, California, USA.
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43
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Wang C, Liu G, Ding Y, Li Z, Zhen Y, Cui J, Yao W, Di A, Huang K, Feng P, Wu R. Application of peripherally inserted central catheter in immune tolerance induction treatment of children with hemophilia A and accompanying inhibitors in China. Hematology 2023; 28:2250601. [PMID: 37675982 DOI: 10.1080/16078454.2023.2250601] [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: 10/19/2022] [Accepted: 01/04/2023] [Indexed: 09/08/2023] Open
Abstract
OBJECTIVE To explore the feasibility, safety and cost effectiveness of the use of peripherally inserted central catheter (PICC) in children with hemophilia A and inhibitors who underwent ITI treatment. METHOD This retrospective cohort study evaluated the effect of PICC placement and ITI on bleeding rates, costs, and parents' satisfaction before and within 6 months after PICC placement in children with hemophilia A and inhibitors. RESULTS A total of 20 children with hemophilia A and high-titer inhibitors were included, with a success rate for PICC placement of 100%, at a cost of ¥6730.50. Parents' satisfaction with PICC was 100%, and the total length of catheter indwelling was 6055 days. In terms of curative effect, the success rate of ITI treatment was 75%, and the annualized bleeding rate was decreased from 10.90 ± 12.16 times before placement to 2.10 ± 3.32 times (p < 0.05). The transportation expense for children and their parents to the clinic decreased from ¥20,920 ± 32,274.57 before catheter placement to ¥2915 ± 2195.99 (p < 0.05). Time of children missed school and their parents missed work decreased from 10.85 ± 22.36 days to 1.90 ± 3.58 (p < 0.05) days and 40.33 ± 46.11 days to 3.83 ± 7.11 days (p < 0.05), respectively. CONCLUSION The use of PICC for ITI treatment in children with hemophilia A and accompanying inhibitors in developing countries (e.g. China) can ensure the effect of ITI, reducing expense and improving the quality of life without obvious side effects.
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Affiliation(s)
- Chunli Wang
- Nursing Department, Beijing Children's Hospital, Capital Medical University, Beijing, People's Republic of China
- National Center for Children's Health, Beijing, People's Republic of China
| | - Guoqing Liu
- National Center for Children's Health, Beijing, People's Republic of China
- Beijing Key Laboratory of Pediatric Hematology Oncology, Hematology Center, Beijing, People's Republic of China
- National Key Discipline of Pediatrics, Capital Medical University, Beijing, People's Republic of China
- Ministry of Education, Key Laboratory of Major Diseases in Children, Beijing, People's Republic of China
- Department II of Hematology Center, Haemophilia Comprehensive Care Center, Beijing Children's HospitalCapital Medical University, Beijing, People's Republic of China
| | - Yaguang Ding
- Nursing Department, Beijing Children's Hospital, Capital Medical University, Beijing, People's Republic of China
- National Center for Children's Health, Beijing, People's Republic of China
| | - Zekun Li
- National Center for Children's Health, Beijing, People's Republic of China
- Beijing Key Laboratory of Pediatric Hematology Oncology, Hematology Center, Beijing, People's Republic of China
- National Key Discipline of Pediatrics, Capital Medical University, Beijing, People's Republic of China
- Ministry of Education, Key Laboratory of Major Diseases in Children, Beijing, People's Republic of China
- Department II of Hematology Center, Haemophilia Comprehensive Care Center, Beijing Children's HospitalCapital Medical University, Beijing, People's Republic of China
| | - Yingzi Zhen
- Nursing Department, Beijing Children's Hospital, Capital Medical University, Beijing, People's Republic of China
- National Center for Children's Health, Beijing, People's Republic of China
| | - Jie Cui
- Nursing Department, Beijing Children's Hospital, Capital Medical University, Beijing, People's Republic of China
- National Center for Children's Health, Beijing, People's Republic of China
| | - Wanru Yao
- National Center for Children's Health, Beijing, People's Republic of China
- Beijing Key Laboratory of Pediatric Hematology Oncology, Hematology Center, Beijing, People's Republic of China
- National Key Discipline of Pediatrics, Capital Medical University, Beijing, People's Republic of China
- Ministry of Education, Key Laboratory of Major Diseases in Children, Beijing, People's Republic of China
- Department II of Hematology Center, Haemophilia Comprehensive Care Center, Beijing Children's HospitalCapital Medical University, Beijing, People's Republic of China
| | - Ai Di
- National Center for Children's Health, Beijing, People's Republic of China
- Beijing Key Laboratory of Pediatric Hematology Oncology, Hematology Center, Beijing, People's Republic of China
- National Key Discipline of Pediatrics, Capital Medical University, Beijing, People's Republic of China
- Ministry of Education, Key Laboratory of Major Diseases in Children, Beijing, People's Republic of China
- Department II of Hematology Center, Haemophilia Comprehensive Care Center, Beijing Children's HospitalCapital Medical University, Beijing, People's Republic of China
| | - Kun Huang
- National Center for Children's Health, Beijing, People's Republic of China
- Beijing Key Laboratory of Pediatric Hematology Oncology, Hematology Center, Beijing, People's Republic of China
- National Key Discipline of Pediatrics, Capital Medical University, Beijing, People's Republic of China
- Ministry of Education, Key Laboratory of Major Diseases in Children, Beijing, People's Republic of China
- Department II of Hematology Center, Haemophilia Comprehensive Care Center, Beijing Children's HospitalCapital Medical University, Beijing, People's Republic of China
| | - Ping Feng
- Nursing Department, Beijing Children's Hospital, Capital Medical University, Beijing, People's Republic of China
- National Center for Children's Health, Beijing, People's Republic of China
| | - Runhui Wu
- National Center for Children's Health, Beijing, People's Republic of China
- Beijing Key Laboratory of Pediatric Hematology Oncology, Hematology Center, Beijing, People's Republic of China
- National Key Discipline of Pediatrics, Capital Medical University, Beijing, People's Republic of China
- Ministry of Education, Key Laboratory of Major Diseases in Children, Beijing, People's Republic of China
- Department II of Hematology Center, Haemophilia Comprehensive Care Center, Beijing Children's HospitalCapital Medical University, Beijing, People's Republic of China
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Minskaia E, Galieva A, Egorov AD, Ivanov R, Karabelsky A. Viral Vectors in Gene Replacement Therapy. Biochemistry (Mosc) 2023; 88:2157-2178. [PMID: 38462459 DOI: 10.1134/s0006297923120179] [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] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 09/29/2023] [Accepted: 10/17/2023] [Indexed: 03/12/2024]
Abstract
Throughout the years, several hundred million people with rare genetic disorders have been receiving only symptom management therapy. However, research and development efforts worldwide have led to the development of long-lasting, highly efficient, and safe gene therapy for a wide range of hereditary diseases. Improved viral vectors are now able to evade the preexisting immunity and more efficiently target and transduce therapeutically relevant cells, ensuring genome maintenance and expression of transgenes at the relevant levels. Hematological, ophthalmological, neurodegenerative, and metabolic therapeutic areas have witnessed successful treatment of hemophilia and muscular dystrophy, restoration of immune system in children with immunodeficiencies, and restoration of vision. This review focuses on three leading vector platforms of the past two decades: adeno-associated viruses (AAVs), adenoviruses (AdVs), and lentiviruses (LVs). Special attention is given to successful preclinical and clinical studies that have led to the approval of gene therapies: six AAV-based (Glybera® for lipoprotein lipase deficiency, Luxturna® for retinal dystrophy, Zolgensma® for spinal muscular atrophy, Upstaza® for AADC, Roctavian® for hemophilia A, and Hemgenix® for hemophilia B) and three LV-based (Libmeldy® for infantile metachromatic leukodystrophy, Zynteglo® for β-thalassemia, and Skysona® for ALD). The review also discusses the problems that arise in the development of gene therapy treatments, which, nevertheless, do not overshadow the successes of already developed gene therapies and the hope these treatments give to long-suffering patients and their families.
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Affiliation(s)
- Ekaterina Minskaia
- Scientific Center of Translational Medicine, Department of Gene Therapy, Sirius University of Science and Technology, Sochi, 354530, Russia.
| | - Alima Galieva
- Scientific Center of Translational Medicine, Department of Gene Therapy, Sirius University of Science and Technology, Sochi, 354530, Russia
| | - Alexander D Egorov
- Scientific Center of Translational Medicine, Department of Gene Therapy, Sirius University of Science and Technology, Sochi, 354530, Russia
| | - Roman Ivanov
- Scientific Center of Translational Medicine, Department of Gene Therapy, Sirius University of Science and Technology, Sochi, 354530, Russia
| | - Alexander Karabelsky
- Scientific Center of Translational Medicine, Department of Gene Therapy, Sirius University of Science and Technology, Sochi, 354530, Russia
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Wheeler AP, Lim MY, Huguelet PS, Jaffray J, Staber JM, Funkhouser K, Carpenter SL, Weyand AC. Trends in dedicated care for females with bleeding disorders within U.S. hemophilia treatment centers. Am J Hematol 2023; 98:E399-E402. [PMID: 37800397 DOI: 10.1002/ajh.27115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 09/08/2023] [Accepted: 09/19/2023] [Indexed: 10/07/2023]
Abstract
Graphical representation of increasing percentage of female patients seen at HTCs, percentage of females by diagnosis, number of clinics in existence, and absolute number of female patients seen over a 10-year period (top left then clockwise).
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Affiliation(s)
- Allison P Wheeler
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Ming Y Lim
- Division of Hematology and Hematologic Malignancies, Department of Internal Medicine, University of Utah, Salt Lake City, Utah, USA
| | - Patricia S Huguelet
- Department of Obstetrics and Gynecology, Section of Pediatric and Adolescent Gynecology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Julie Jaffray
- Division of Hematology/Oncology, Rady Children's Hospital, San Diego, California, USA
| | - Janice M Staber
- Department of Pediatrics, The University of Iowa Stead Family Children's Hospital, Iowa City, Iowa, USA
| | - Kerry Funkhouser
- Foundation for Women & Girls with Blood Disorders, Montclair, New Jersey, USA
| | - Shannon L Carpenter
- Division of Pediatric Hematology/Oncology/BMT, Children's Mercy Hospital, Kansas City, Missouri, USA
| | - Angela C Weyand
- Department of Pediatrics, University of Michigan Medical School, Ann Arbor, Michigan, USA
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Fang S, Wang G, Yang LH. [Advances in AAV-CRISPR/Cas9-Mediated Hemophilia A Gene Therapy --Review]. Zhongguo Shi Yan Xue Ye Xue Za Zhi 2023; 31:1890-1893. [PMID: 38071078 DOI: 10.19746/j.cnki.issn.1009-2137.2023.06.045] [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] [Subscribe] [Scholar Register] [Indexed: 12/18/2023]
Abstract
Hemophilia A(HA) is an X-linked recessive bleeding disorder caused by mutations in coagulation factor VIII. Nowadays, exogenous coagulation factor replacement therapy is the main treatment. With the continuous development of gene therapy, new research directions have been provided for the treatment of hemophilia A. CRISPR-Cas9 technology was applied to select suitable target sites, and mediate the targeted knock-in and efficient expression of exogenous B-domain-deleted FⅧ variant gene through corresponding vectors for the treatment of hemophilia A.CRISPR-Cas9 technology is an emerging gene editing tool with great efficiency, safety and effectiveness, and has been widely used in hemophilia gene therapy research. This paper reviews the vector selection, construction of therapeutic genes, gene editing technology and selection of expression target sites for hemophilia A gene therapy at this stage.
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Affiliation(s)
- Shuai Fang
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Shanxi Medical University
- Department of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan 030001, Shanxi Province, China
| | - Gang Wang
- Department of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan 030001, Shanxi Province, China
| | - Lin-Hua Yang
- Department of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan 030001, Shanxi Province, China. E-mail:
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Hiramoto T, Inaba H, Baatartsogt N, Kashiwakura Y, Hayakawa M, Kamoshita N, Nishimasu H, Nureki O, Kinai E, Ohmori T. Genome editing of patient-derived iPSCs identifies a deep intronic variant causing aberrant splicing in hemophilia A. Blood Adv 2023; 7:7017-7027. [PMID: 37792826 PMCID: PMC10690555 DOI: 10.1182/bloodadvances.2023010838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 08/25/2023] [Accepted: 09/08/2023] [Indexed: 10/06/2023] Open
Abstract
The importance of genetic diagnosis for patients with hemophilia has been recently demonstrated. However, the pathological variant cannot be identified in some patients. Here, we aimed to identify the pathogenic intronic variant causing hemophilia A using induced pluripotent stem cells (iPSCs) from patients and genome editing. We analyzed siblings with moderate hemophilia A and without abnormalities in the F8 exon. Next-generation sequencing of the entire F8 revealed 23 common intron variants. Variant effect predictor software indicated that the deep intronic variant at c.5220-8563A>G (intron 14) might act as a splicing acceptor. We developed iPSCs from patients and used genome editing to insert the elongation factor 1α promoter to express F8 messenger RNA (mRNA). Then, we confirmed the existence of abnormal F8 mRNA derived from aberrant splicing, resulting in a premature terminal codon as well as a significant reduction in F8 mRNA in iPSCs due to nonsense-mediated RNA decay. Gene repair by genome editing recovered whole F8 mRNA expression. Introduction of the intron variant into human B-domain-deleted F8 complementary DNA suppressed factor VIII (FVIII) activity and produced abnormal FVIII lacking the light chain in HEK293 cells. Furthermore, genome editing of the intron variant restored FVIII production. In summary, we have directly proven that the deep intronic variant in F8 results in aberrant splicing, leading to abnormal mRNA and nonsense-mediated RNA decay. Additionally, genome editing targeting the variant restored F8 mRNA and FVIII production. Our approach could be useful not only for identifying causal variants but also for verifying the therapeutic effect of personalized genome editing.
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Affiliation(s)
- Takafumi Hiramoto
- Department of Biochemistry, Jichi Medical University School of Medicine, Shimotsuke, Tochigi, Japan
| | - Hiroshi Inaba
- Department of Laboratory Medicine, Tokyo Medical University, Tokyo, Japan
| | - Nemekhbayar Baatartsogt
- Department of Biochemistry, Jichi Medical University School of Medicine, Shimotsuke, Tochigi, Japan
| | - Yuji Kashiwakura
- Department of Biochemistry, Jichi Medical University School of Medicine, Shimotsuke, Tochigi, Japan
| | - Morisada Hayakawa
- Department of Biochemistry, Jichi Medical University School of Medicine, Shimotsuke, Tochigi, Japan
- Center for Gene Therapy Research, Jichi Medical University, Shimotsuke, Tochigi, Japan
| | - Nobuhiko Kamoshita
- Department of Biochemistry, Jichi Medical University School of Medicine, Shimotsuke, Tochigi, Japan
- Center for Gene Therapy Research, Jichi Medical University, Shimotsuke, Tochigi, Japan
| | - Hiroshi Nishimasu
- Structural Biology Division, Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan
| | - Osamu Nureki
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan
| | - Ei Kinai
- Department of Laboratory Medicine, Tokyo Medical University, Tokyo, Japan
| | - Tsukasa Ohmori
- Department of Biochemistry, Jichi Medical University School of Medicine, Shimotsuke, Tochigi, Japan
- Center for Gene Therapy Research, Jichi Medical University, Shimotsuke, Tochigi, Japan
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48
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Shafaati Lambert M, Bruzelius M, Mahmoud Hourani Soutari N, Ranta S, Antovic JP. Laboratory response to paradigm change in hemophilia treatment. Clin Chem Lab Med 2023; 61:e248-e250. [PMID: 37319338 DOI: 10.1515/cclm-2023-0443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 05/24/2023] [Indexed: 06/17/2023]
Affiliation(s)
- Marjan Shafaati Lambert
- Coagulation & Clinical Chemistry, Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
- Coagulation, Clinical Chemistry, Karolinska University Laboratory, Medical Diagnostics Karolinska, Karolinska University Hospital, Stockholm, Sweden
| | - Maria Bruzelius
- Department of Medicine, Karolinska Institutet, Stockholm, Sweden
- Department of Hematology, Karolinska University Hospital, Stockholm, Sweden
| | - Nida Mahmoud Hourani Soutari
- Coagulation & Clinical Chemistry, Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
- Coagulation, Clinical Chemistry, Karolinska University Laboratory, Medical Diagnostics Karolinska, Karolinska University Hospital, Stockholm, Sweden
| | - Susanna Ranta
- Astrid Lindgren's Children's Hospital, Karolinska Univeristy Hospital, Stockholm, Sweden
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
| | - Jovan P Antovic
- Coagulation & Clinical Chemistry, Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
- Coagulation, Clinical Chemistry, Karolinska University Laboratory, Medical Diagnostics Karolinska, Karolinska University Hospital, Stockholm, Sweden
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49
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Gao ZZ, Yang H, Liu WB, Xu C, Xiang SC, Wang LC, Mao YJ. Physical therapy for end-stage hemophilic arthropathy: a case report. BMC Musculoskelet Disord 2023; 24:916. [PMID: 38012586 PMCID: PMC10680260 DOI: 10.1186/s12891-023-07056-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 11/22/2023] [Indexed: 11/29/2023] Open
Abstract
This report introduces a young adult who has been in bed for more than ten years with end-stage hemophilic arthropathy. He didn't have access to factor VIII (FVIII) in the early stage of hemophilia due to the high costs of clotting replacement therapy. As a result, he is experiencing some difficulties, such as joint contracture, muscular atrophy, severe pain, and poor function of cardiopulmonary. He came to visit us for a comprehensive rehabilitation program, and, finally, he achieved the basic goal of self-care in daily life.
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Affiliation(s)
- Zhen-Zhen Gao
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, Zhejiang, 310006, China
| | - Hang Yang
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, Zhejiang, 310006, China
| | - Wen-Bin Liu
- Department of Hematology, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, Zhejiang, 310006, China
| | - Cui Xu
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, Zhejiang, 310006, China
| | - Shou-Chang Xiang
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, Zhejiang, 310006, China
| | - Ling-Cong Wang
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, Zhejiang, 310006, China
| | - Ya-Jun Mao
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, Zhejiang, 310006, China.
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50
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Boyce S, Fletcher S, Jones A, Kohli R, Mangles S, Ong M, Pollard D, Sivasubramaniyam S, Stephensen D, Stoner N, Kazmi R. Educational needs of patients, families, and healthcare professionals to support the patient journey in haemophilia gene therapy in the UK. Orphanet J Rare Dis 2023; 18:366. [PMID: 38007560 PMCID: PMC10676600 DOI: 10.1186/s13023-023-02977-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 11/18/2023] [Indexed: 11/27/2023] Open
Abstract
With the first gene therapies for haemophilia approved by the European Commission, the US Food and Drug Administration, and the Medicines and Healthcare products Regulatory Agency, it is important to consider the remaining unmet needs and challenges that may arise throughout patients' treatment journeys. We discuss existing unmet needs and important considerations prior to, during, and following haemophilia gene therapy treatment in the UK, and propose potential next steps. Key areas for attention are education, psychological support, and guidance on implementation. Strategies are urgently required to fulfil these needs. An immediate priority for information providers should be comprehensive education for people with haemophilia (PWH) and healthcare professionals (HCPs). Greater access to resources and training in psychological services will be required throughout the treatment pathway. More specific guidance is required to define the implementation model, criteria for accreditation, and responsibilities of care centres. Furthermore, PWH may revisit discussions with HCPs multiple times pre-infusion, thus the patient journey is unlikely to be linear. Consideration of these challenges, and of potential strategies to address them, will be integral to optimising the future success of this promising therapy.
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Affiliation(s)
- Sara Boyce
- University Hospital Southampton, Southampton, UK.
| | - Simon Fletcher
- Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - April Jones
- The Royal Victoria Infirmary, Newcastle upon Tyne, UK
| | | | - Sarah Mangles
- Haemophilia, Haemostasis and Thrombosis Centre, Hampshire Hospitals NHS Foundation Trust, Basingstoke, UK
| | - Min Ong
- Sheffield Children's NHS Foundation Trust, Sheffield, UK
| | - Debra Pollard
- Haemophilia and Thrombosis Centre, Royal Free Hospital, London, UK
| | | | | | - Nicola Stoner
- Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Rashid Kazmi
- University Hospital Southampton, Southampton, UK
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