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  1. Article ; Online: Heavy menstrual blood loss in patients with von Willebrand disease: an unsolved problem.

    Leebeek, Frank W G

    The Lancet. Haematology

    2023  Volume 10, Issue 8, Page(s) e561–e562

    MeSH term(s) Female ; Humans ; von Willebrand Diseases/complications ; von Willebrand Factor ; Menorrhagia/etiology ; Patients
    Chemical Substances von Willebrand Factor
    Language English
    Publishing date 2023-06-26
    Publishing country England
    Document type Journal Article ; Comment
    ISSN 2352-3026
    ISSN (online) 2352-3026
    DOI 10.1016/S2352-3026(23)00165-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: A novel VWF-associated thrombolytic agent.

    Leebeek, Frank W G

    Blood

    2022  Volume 140, Issue 26, Page(s) 2770–2771

    MeSH term(s) Humans ; Animals ; Mice ; Fibrinolytic Agents/therapeutic use ; von Willebrand Factor ; Ischemic Stroke ; Fibrinolysis ; Thrombolytic Therapy
    Chemical Substances Fibrinolytic Agents ; von Willebrand Factor
    Language English
    Publishing date 2022-12-29
    Publishing country United States
    Document type Editorial ; Comment
    ZDB-ID 80069-7
    ISSN 1528-0020 ; 0006-4971
    ISSN (online) 1528-0020
    ISSN 0006-4971
    DOI 10.1182/blood.2022018024
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Diagnosis and treatment of von Willebrand disease in 2024 and beyond.

    James, Paula / Leebeek, Frank / Casari, Caterina / Lillicrap, David

    Haemophilia : the official journal of the World Federation of Hemophilia

    2024  Volume 30 Suppl 3, Page(s) 103–111

    Abstract: Manuscript background and aim: The diagnosis and clinical care of patients with von Willebrand disease (VWD) has continued to evolve since the characterization of the von Willebrand factor (VWF) gene in 1985. This condition is almost certainly the most ... ...

    Abstract Manuscript background and aim: The diagnosis and clinical care of patients with von Willebrand disease (VWD) has continued to evolve since the characterization of the von Willebrand factor (VWF) gene in 1985. This condition is almost certainly the most common inherited bleeding disorder, and the major symptomatic burden of the disease is experienced by females during their reproductive years. Diagnosis relies on the identification of a personal and family history of excessive mucocutaneous bleeding, and laboratory features consistent with quantitative and/or qualitative abnormalities of VWF. This review focuses on three aspects of VWD management, with current updates and a look into the future.
    Manuscript themes: First, we will address the role of genetics in the diagnosis and possible therapies for VWD. With current technologies, VWD genetic diagnosis is usually confined to the confirmation of type 2 subtypes of the disease and type 3 VWD analysis for family planning. While type 3 VWD is a potential candidate for the application of gene therapy, no treatments are currently close to entering the clinic. Second, the peri-procedural management of patients with VWD remains an important element of care. The choice of product, its dose and schedule all require careful consideration depending upon the type and disruptive nature of the planned procedure. Lastly, in addition to gene therapy, several other novel therapeutic interventions are also being developed for bleeding and prophylaxis in VWD. These include a VWF aptamer interfering with VWF clearance and bioengineered forms of VWF.
    MeSH term(s) Female ; Humans ; von Willebrand Diseases/diagnosis ; von Willebrand Diseases/genetics ; von Willebrand Diseases/therapy ; von Willebrand Factor/genetics ; von Willebrand Factor/therapeutic use ; von Willebrand Disease, Type 3 ; Hemorrhage/diagnosis
    Chemical Substances von Willebrand Factor
    Language English
    Publishing date 2024-03-13
    Publishing country England
    Document type Review ; Journal Article
    ZDB-ID 1229713-6
    ISSN 1365-2516 ; 1351-8216 ; 1355-0691
    ISSN (online) 1365-2516
    ISSN 1351-8216 ; 1355-0691
    DOI 10.1111/hae.14970
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: New Developments in Diagnosis and Management of Acquired Hemophilia and Acquired von Willebrand Syndrome.

    Leebeek, Frank W G

    HemaSphere

    2021  Volume 5, Issue 6, Page(s) e586

    Abstract: Acquired hemophilia A and acquired von Willebrand syndrome are rare, but life-threatening bleeding disorders that require prompt diagnosis and treatment by hematologists. Acquired hemophilia A is defined as an acquired severe bleeding tendency caused by ... ...

    Abstract Acquired hemophilia A and acquired von Willebrand syndrome are rare, but life-threatening bleeding disorders that require prompt diagnosis and treatment by hematologists. Acquired hemophilia A is defined as an acquired severe bleeding tendency caused by autoantibody formation against coagulation factor VIII. Acquired von Willebrand syndrome is characterized by a new onset bleeding tendency caused by a reduced concentration and/or function of von Willebrand factor. These disorders are associated with a variety of underlying disorders, including various hematological malignancies, for example, plasma cell disorders, lymphoproliferative disorders, monoclonal gammopathy of undetermined significance, and myeloproliferative neoplasms. It is of utmost important to recognize these acquired bleeding disorders in these patients who are at risk for severe bleeding, and to perform additional diagnostic hemostasis laboratory evaluation. This will enable immediate diagnosis of the acquired bleeding disorder and management of both the bleeding episodes and the causative underlying disorder. In recent years, several new etiological factors for acquired hemophilia A, such as treatment with immune checkpoint inhibitors or DPP-4 inhibitors and SARS-CoV2 infection, and for acquired von Willebrand syndrome, for example, left ventricular assist devices, have been identified and also new treatment options have become available. In this concise review, the most recent data on etiology, diagnosis, and treatment of acquired bleeding disorders are presented and discussed.
    Language English
    Publishing date 2021-06-01
    Publishing country United States
    Document type Journal Article ; Review
    ISSN 2572-9241
    ISSN (online) 2572-9241
    DOI 10.1097/HS9.0000000000000586
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Gene therapy for hemophilia: a review on clinical benefit, limitations, and remaining issues.

    Leebeek, Frank W G / Miesbach, Wolfgang

    Blood

    2021  Volume 138, Issue 11, Page(s) 923–931

    Abstract: In the last decade, enormous progress has been made in the development of gene therapy for hemophilia A and B. After the first encouraging results of intravenously administered adeno-associated virus (AAV)-based liver-directed gene therapy in patients ... ...

    Abstract In the last decade, enormous progress has been made in the development of gene therapy for hemophilia A and B. After the first encouraging results of intravenously administered adeno-associated virus (AAV)-based liver-directed gene therapy in patients with severe hemophilia B were reported in 2011, many gene therapy studies have been initiated. Most of these studies, using AAV vectors with various gene constructs, showed sufficient factor VIII and IX expression in patients to significantly reduce the number of bleeds and the need for prophylaxis in most patients with severe hemophilia. This resulted in great clinical benefit for nearly all patients. In this review, we will summarize the most recent findings of reported and ongoing gene therapy trials. We will highlight the successful outcome of trials with focus on the results of recently reported phase 1 trials and preliminary results of phase 2b/3 trials for hemophilia A and B. These new reports also reveal the impact of side effects and drawbacks associated with gene therapy. We will therefore also discuss the limitations and remaining issues of the current gene therapy approaches. These issues must be resolved before gene therapy will be widely available for the hemophilia patient population.
    MeSH term(s) Animals ; Clinical Trials as Topic ; Dependovirus/genetics ; Factor IX/genetics ; Factor VIII/genetics ; Genetic Therapy/methods ; Genetic Vectors/genetics ; Genetic Vectors/therapeutic use ; Hemophilia A/genetics ; Hemophilia A/therapy ; Hemophilia B/genetics ; Hemophilia B/therapy ; Humans
    Chemical Substances Factor VIII (9001-27-8) ; Factor IX (9001-28-9)
    Language English
    Publishing date 2021-11-23
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 80069-7
    ISSN 1528-0020 ; 0006-4971
    ISSN (online) 1528-0020
    ISSN 0006-4971
    DOI 10.1182/blood.2019003777
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: A prothrombotic von Willebrand factor variant.

    Leebeek, Frank W G

    Blood

    2019  Volume 133, Issue 4, Page(s) 288–289

    MeSH term(s) Blood Platelets ; Factor VIII ; Humans ; Integrins ; von Willebrand Diseases ; von Willebrand Factor
    Chemical Substances Integrins ; von Willebrand Factor ; Factor VIII (9001-27-8)
    Language English
    Publishing date 2019-01-21
    Publishing country United States
    Document type Journal Article ; Comment
    ZDB-ID 80069-7
    ISSN 1528-0020 ; 0006-4971
    ISSN (online) 1528-0020
    ISSN 0006-4971
    DOI 10.1182/blood-2018-11-883488
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: The state of oral health in patients with haemophilia in the Netherlands.

    Mulders, Greta / van Verseveld, Hanneke / van der Geer, Joyce / Wolvius, Eppo / Leebeek, Frank

    Haemophilia : the official journal of the World Federation of Hemophilia

    2023  Volume 29, Issue 2, Page(s) 466–478

    Abstract: Introduction: Previous studies show contradictory outcomes regarding dental, gingival and periodontal status in persons with haemophilia (PWH) compared to healthy controls. PWH may experience disease-specific barriers to access dental care due to their ... ...

    Abstract Introduction: Previous studies show contradictory outcomes regarding dental, gingival and periodontal status in persons with haemophilia (PWH) compared to healthy controls. PWH may experience disease-specific barriers to access dental care due to their bleeding tendency, which may lead to delays in oral care and severe dental problems.
    Aim: To determine the current subjective and objective oral health status in adult PWH.
    Methods: Randomly selected PWH of the Erasmus MC Haemophilia Treatment Center (HTC), Rotterdam, the Netherlands, were invited to participate. Data was collected using the Oral Health Impact Profile (OHIP-14NL) and personal interviews. A dentist used the DMFT index, the Dutch Periodontal Screening index (DPSI), plaque and bleeding index to score the dental status.
    Results: Forty-eight adult PWH were included in this study, 20 mild, 15 moderate-severe and 13 severe haemophilia with a mean age of 44.7. PWH scored low on the OHIP-14 questionnaire (median total score 1.0; IQR .0-3.0), indicating a high self-rating oral health status. The number of bleeding events, bleeding- and plaque index score was not statistically significant between patients with mild, moderate or severe haemophilia. The mean number of decayed, missing, and filled teeth (DMFT-score) was significantly lower in the group of patients with severe haemophilia (median 2.0) compared to mild haemophilia (median 16.0) (p = .04). Twenty-five patients (52.1%) reported to have encountered bleeding problems during or after dental interventions during their lifetime.
    Conclusion: Dutch adult PWH A/B have good dental status and oral health status.
    MeSH term(s) Adult ; Humans ; Hemophilia A/complications ; Oral Health ; Netherlands/epidemiology ; Hemophilia B ; Surveys and Questionnaires
    Language English
    Publishing date 2023-01-10
    Publishing country England
    Document type Journal Article
    ZDB-ID 1229713-6
    ISSN 1365-2516 ; 1351-8216 ; 1355-0691
    ISSN (online) 1365-2516
    ISSN 1351-8216 ; 1355-0691
    DOI 10.1111/hae.14719
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: How I manage severe von Willebrand disease.

    Leebeek, Frank W G / Atiq, Ferdows

    British journal of haematology

    2019  Volume 187, Issue 4, Page(s) 418–430

    Abstract: Von Willebrand disease (VWD) is the most common inherited bleeding disorder. Most patients with mild and moderate VWD can be treated effectively with desmopressin. The management of severe VWD patients, mostly affected by type 2 and type 3 disease, can ... ...

    Abstract Von Willebrand disease (VWD) is the most common inherited bleeding disorder. Most patients with mild and moderate VWD can be treated effectively with desmopressin. The management of severe VWD patients, mostly affected by type 2 and type 3 disease, can be challenging. In this article we review the current diagnosis and treatment of severe VWD patients. We will also discuss the management of severe VWD patients in specific situations, such as pregnancy, delivery, patients developing alloantibodies against von Willebrand factor and VWD patients with recurrent gastrointestinal bleeding. Moreover, we review emerging treatments that may be applied in future management of patients with severe VWD.
    MeSH term(s) Disease Management ; Female ; Forecasting ; Humans ; Male ; Pregnancy ; von Willebrand Disease, Type 2/therapy ; von Willebrand Disease, Type 3/surgery ; von Willebrand Diseases/therapy
    Language English
    Publishing date 2019-09-09
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 80077-6
    ISSN 1365-2141 ; 0007-1048
    ISSN (online) 1365-2141
    ISSN 0007-1048
    DOI 10.1111/bjh.16186
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  9. Article ; Online: Effect of etranacogene dezaparvovec on quality of life for severe and moderately severe haemophilia B participants: Results from the phase III HOPE-B trial 2 years after gene therapy.

    Itzler, Robbin / Buckner, Tyler W / Leebeek, Frank W G / Miller, Joel / Recht, Michael / Drelich, Douglass / Monahan, Paul E / Pipe, Steven W

    Haemophilia : the official journal of the World Federation of Hemophilia

    2024  

    Abstract: Introduction: For people with haemophilia B (PwHB), bleeding may occur despite prophylaxis, negatively affecting health-related quality of life (HRQoL). The pivotal phase 3 HOPE-B trial investigating the adeno-associated virus gene transfer product, ... ...

    Abstract Introduction: For people with haemophilia B (PwHB), bleeding may occur despite prophylaxis, negatively affecting health-related quality of life (HRQoL). The pivotal phase 3 HOPE-B trial investigating the adeno-associated virus gene transfer product, etranacogene dezaparvovec (EDZ), demonstrated sustained factor IX (FIX) activity and bleed protection in PwHB with baseline FIX levels ≤2%.
    Aim: Assess how EDZ affects HRQoL in HOPE-B trial participants.
    Methods: HRQoL was evaluated using generic and disease-specific patient reported outcomes (PROs) including the EQ-5D-5L and the Hem-A-QoL questionnaires. Mean domain and total scores were compared 6 months pre- and the first 2 years post-EDZ administration using repeated measures linear mixed models. The percentage of participants with minimal clinically important improvements in HRQoL was also evaluated.
    Results: Two years post-EDZ, there were nominally significant increases in the least squares (LS) mean score for the EQ-5D-5L Index Value (.04; p = .0129), reflecting better HRQoL. Nominally significant decreases in the LS mean scores, reflecting better HRQoL, were also found for the Hem-A-QoL total score (-6.0; p < .0001) and the Treatment (-13.94; p < .0001), Feelings (-9.01; p < .0001), Future (-6.45; p = .0004) and Work/School (-5.21; p = .0098) domains. The percentage of participants with ≥15-point improvement ranged from 45.83% (95% CI: 31.37%, 60.83%) for Treatment to 13.89% (95% CI: 4.67%, 29.50%) for Family Planning. Results were similar for Year 1.
    Conclusion: In conclusion, gene therapy with EDZ improved HRQoL in the first and second years in several Hem-A-QoL domains, including Treatment, Feelings, Work/School and Future domains, whereas improvement in other aspects of HRQoL were not demonstrated.
    Language English
    Publishing date 2024-03-10
    Publishing country England
    Document type Journal Article
    ZDB-ID 1229713-6
    ISSN 1365-2516 ; 1351-8216 ; 1355-0691
    ISSN (online) 1365-2516
    ISSN 1351-8216 ; 1355-0691
    DOI 10.1111/hae.14977
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  10. Article ; Online: Update of thrombosis in multiple myeloma.

    Leebeek, Frank W G

    Thrombosis research

    2016  Volume 140 Suppl 1, Page(s) S76–80

    Abstract: With the introduction of thalidomide and multi-agent chemotherapy in the treatment of multiple myeloma around 15years ago a strongly increased risk of venous thrombosis was observed. The occurrence of venous thrombosis in multiple myeloma is not only ... ...

    Abstract With the introduction of thalidomide and multi-agent chemotherapy in the treatment of multiple myeloma around 15years ago a strongly increased risk of venous thrombosis was observed. The occurrence of venous thrombosis in multiple myeloma is not only determined by the kind of treatment, but also by several other factors, including disease specific factors, patient-specific factors, changes in pro-and anticoagulant factors and fibrinolysis. Studies showed a prevalence of up to 25% in patients with newly diagnosed multiple myeloma. Therefore these patients nowadays receive prophylaxis with aspirin, low molecular weight heparin or warfarin in order to reduce the risk of venous thrombosis. It is however still debatable which patients should receive prophylaxis and what the best kind of prophylaxis is, considering both the risk of thrombosis and the risk of bleeding. In recent years several new anti-myeloma agents have been developed and investigated in large clinical studies. The risk of thrombosis using these new drugs seems less than with thalidomide and lenalidomide-based regimens. In this article an update on prevention and management of thrombotic events in patients with multiple myeloma is given.
    MeSH term(s) Anticoagulants/therapeutic use ; Antineoplastic Agents/adverse effects ; Antineoplastic Agents/therapeutic use ; Aspirin/therapeutic use ; Heparin, Low-Molecular-Weight/therapeutic use ; Humans ; Multiple Myeloma/complications ; Multiple Myeloma/drug therapy ; Thalidomide/adverse effects ; Thalidomide/analogs & derivatives ; Thalidomide/therapeutic use ; Thrombosis/chemically induced ; Thrombosis/complications ; Thrombosis/drug therapy ; Thrombosis/prevention & control ; Warfarin/therapeutic use
    Chemical Substances Anticoagulants ; Antineoplastic Agents ; Heparin, Low-Molecular-Weight ; Thalidomide (4Z8R6ORS6L) ; Warfarin (5Q7ZVV76EI) ; lenalidomide (F0P408N6V4) ; Aspirin (R16CO5Y76E)
    Language English
    Publishing date 2016-04
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 121852-9
    ISSN 1879-2472 ; 0049-3848
    ISSN (online) 1879-2472
    ISSN 0049-3848
    DOI 10.1016/S0049-3848(16)30103-7
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