View clinical trials related to Von Willebrand Diseases.
Filter by:MOdalities of use, effectiveNEss and TOlerability of Eqwilate® a balanced combInatiON of VWF and FVIII in von WillEbrand patients in real-life conditions: the ONE-TO-ONE study
Hemophilia A and B are bleeding disorders caused by deficiency of factor VIII and IX, respectively. The deficiency of one of these coagulation factors is due to a mutation on the X chromosome. Accordingly replacement of the deficient factor is currently the main treatment for these disorders. The most disappointing complication of replacement therapy in hemophilia is the development of inhibitors. Unlike haemophilia , inhibitor development in patients with V Willebrand's Disease (VWD) is a rare complication of treatment. Studies on inhibitors whether on hemophilia or VWD are limited in our region. This study aims to 1. To estimate the frequency of factor inhibitors in hemophilia and VWD patients in our region. 2. To investigate modifiable risk factors associated with development of inhibitors in both diseases. 3. To correlate the level of inhibitor with the clinical presentation of the patients. 4. To assess influence of factor inhibitors on quality of life in patients who developed factor inhibitors in both diseases.
The purpose of this study is to prospectively obtain reliable data on the bleeding and treatment pattern of patients with VWD undergoing on-demand treatment with a VWF-containing product over a period of 6 months. The data obtained will be used as a basis for historical comparisons with the bleeding and treatment pattern obtained from a clinical study on the efficacy of prophylactic treatment with a VWF/FVIII concentrate.
This is a prospective, non-controlled, international, multi-center phase 3 study investigating the efficacy and safety of Wilate in previously treated adult patients with VWD, to obtain additional data on the safety and efficacy of Wilate in previously treated patients with VWD undergoing regular prophylaxis.
Applying the ISTH-BAT questionnaire on Egyptian patients with type I VWD aiming to correlate the BS with the laboratory findings
The present study will focus on the investigation of the global contribution and limitations of the multimeric analysis and mutation analysis in the VWD diagnostic process. 1. To quantify the bleeding symptoms using bleeding assessment tools (BAT) which has developed by The International Society on Thrombosis and Haemostasis (ISTH) and correlate it to the diagnosis of different subtypes of VWD in Egyptian population. 2. To assess the utility of (gain of function mutant GpIbα binding) as a recent functional assay that measures VWF activity in VWD patients. 3. Clarify how the recent laboratory diagnostic modalities are required to streamline diagnosis , classification and improve treatment of VWD patients. 4. Explore how the molecular analysis can resolve many of the drawbacks and limitations of phenotyping diagnosis (in Egyptian population which not studied before).
The main aim of the study is to check effectiveness of rVWF (vonicog alfa) prophylaxis based on the annualized bleeding rate (ABR) of spontaneous (not related to trauma) bleeding episodes in pediatric and adult participants during the first 12 months on study treatment. The participants will be treated with rVWF for a maximum of 3 years. Their von Willebrand Disease will be treated according to Investigational product (IP) dosing directions.
Von Willebrand disease (VWD) is the most common constitutional bleeding disorder in the world, caused by missing or defective von Willebrand factor (VWF). In France, VWD affects approximatively 7,000 patients. There are many types of VWD. The severest forms are characterized by the occurrence of extremely serious bleedings, requiring in-stays with clotting factors (CF) treatments in specialized hospital units and/or an ambulatory substitutive therapy; both of them are highly expensive. In France, Hemostasis Treatment Centers (HTC) have the opportunity to record these kinds of data in a database called NHEMO (Net-Hemostasis = care database for constitutional bleeding disorders). Further ahead, the data can be coded, dumped into and extracted from the research database BERHLINGO and analyzed. The HOPSCOTcH-WILL study will be a retrospective, non-interventional, multicenter (national) cohort study & will provide an overview of the real-life management of patients with VWD in western France requiring a substitutive treatment with VWF, as well as a description of the characteristics of their hemorrhagic events. Model : Observationnal, real world evidence study. Time Horizon : 2015-2018. HTC (France): Western University Hospitals (BERHLINGO network) = Nantes University Hospital (promotion), Angers University Hospital, Brest University Hospital, Le Mans Regional Hospital & Rennes University Hospital
ATHN 9 is a natural history study to assess the safety of various Von Willebrand Factor (VWF) regimens for different indications (on-demand, surgery and prophylaxis) in adult and pediatric participants with clinically severe congenital VWD.
Currently, the exploration of primary hemostasis (a physiological phenomenon used to stop bleeding) is imperfect because it is based on targeted tests for platelets or von Willebrand factor, without taking into account blood flow and other blood cells (red and white blood cells). Tests for whole blood and flow conditions exist, but there is currently no test that comes close to actual physiological conditions. An exploration of whole blood haemostasis in a device that is similar to a blood vessel and at different flow conditions (venous and arterial) could help to better identify the risk of bleeding in predisposed patients (von Willebrand factor deficiency, antiplatelet therapy). The objective of the study is to evaluate the performance of this new hemostasis test in whole blood and under flow conditions. Participation in the study is ad hoc and is limited to adding a maximum of 4 citrated tubes (20 mL or the equivalent of 4 teaspoons) and 1 EDTA tube (5mL) to a routine blood sample (for patients) or during blood donation (for controls).