View clinical trials related to Von Willebrand Diseases.
Filter by:This is a research study for patients diagnosed with heavy menstrual bleeding (HMB) and low Von Willebrand Factor (VWF). Menstruation, also known as a period, is the regular discharge of blood and tissues from the uterus. HMB is having a heavier amount of discharge during menstrual period. Low Von Willebrand Factor means that the participant has lower level of a blood protein that is important for clotting of blood and so, the participant is at a higher risk for bleeding. The purpose of this project is to study the genetic differences of adolescent females with HMB and low VWF activity and compare the genetic differences with their bleeding manifestations, response to medications and outcome.
The main aim of the study is to check effectiveness, side effects, and tolerability of recombinant von Willebrand Factor (rVWF), with or without ADVATE, in the treatment and control of nonsurgical bleeding events in pediatric participants (less than (<)18 years of age) with severe hereditary von Willebrand disease (VWD). The participants will be treated with rVWF for 12-18 months. Their von Willebrand Disease will be treated by their doctor according to their doctor's usual clinical practice. During the study, participants will be followed up at clinics or over telephone calls.
The present Project is a third phase of the previous PCM-EVW-ES Project (Batlle et al. Thromb & Haemost 2015) with the aim of its extension, further analysis with an innovation development in the field of von Willebrand disease (VWD) based in the newer recently available methodologies. The aim of this project is to help the physician in a more uniform characterization and therapy of VWD in clinical practice, at an international level. A reduction of the expenses in the diagnosis process by using the new methodologies is pursued.
Von Willebrand Disease (VWD) is defined as an inherited bleeding disorder that is caused by deficiency or dysfunction of von Willebrand factor (VWF), a plasma protein that mediates the initial adhesion of platelets at sites of vascular injury and also binds and stabilizes blood clotting factor VIII (FVIII) in the circulation. The most severe forms of VWD are usually easy to diagnose (obvious hemorrhagic symptoms and major VWF deficiency), whereas the mild forms of the disease are still difficult to confirm. It is indeed reported that about 1% of the population carry mild biological VWF deficiency without any bleeding tendency and any "actual disease". On the contrary, some patients with severe bleeding history can carry a true VWF abnormality, well-confirmed by genetic studies, without any VWF deficiency when evaluated with standard biological methods, such as Ristocetin Cofactor activity (VWF:RCo). However, in these patients, the use of alternative methods, such as PFA-100 (Platelet Fonction Analyzer-100), the study of Factor VIII (FVIII:C) to VWF (FVIII:C/VWF) ratio or the evaluation of VWF activity using more specialized methods such as VWF:CB (VWF-Collagen Binding) assay can detect the VWF deficiency and possible hemorrhagic predisposition. In this project, the investigators plan to assess the performance of VWF:CB in the diagnosis of VWF deficiency in patients with unexplained bleeding history.
This is an outpatient, 24-week Phase III prospective, randomized, crossover trial comparing recombinant von Willebrand factor (rVWF) and tranexamic acid (TA, Lysteda®) to minimize menorrhagia in women with von Willebrand disease (VWD). The purpose of this Phase III multicenter prospective, randomized, crossover arm trial is to compare recombinant von Willebrand factor (rVWF) to tranexamic acid (TA) in reducing the severity of menorrhagia in women with von Willebrand disease.
This is a multi-centre, open-label, single-arm, phase 4, post-marketing study to further investigate the efficacy and safety of Voncento in subjects with Von Willebrand Disease (VWD) in whom treatment with a Von Willebrand Factor (VWF) product is required as on-demand therapy, for prophylactic therapy, or during surgery. Subjects will be treated with Voncento either as an on-demand regimen (eg, to treat a non-surgical spontaneous or traumatic bleeding event) or prevention regimen (eg, to prevent an anticipated bleeding event) at a dose prescribed by the Investigator in accordance with the Voncento Summary of Product Characteristics (SmPC), or with a prophylaxis regimen (regular treatment with Voncento at a frequency of 1-3 times per week). Voncento will also be given to prevent and treat any surgical bleeding events.
Multicenter, prospective, non-controlled study in a pediatric cohort (<6 years-old) with severe (type 2 or 3) hereditary Von Willebrand Disease (VWD).
The purpose of this study is to improve the investigators ability to diagnose von Willebrand Disease (VWD), a common inherited bleeding disorder. This study will look at a new screening blood test used to determine if a person has VWD. This new screening blood test can determine a diagnosis more rapidly than current blood tests. Also this test could be available at local hospital labs rather than require samples to be sent to bigger more specialized labs.
International Registries and Prospective Study on Type 3 Von Willebrand's Disease (VWD3), aimed to assess number, types and risk factors for bleeding and the efficacy and safety of plasma-derived and/or recombinant Von Willebrand Factor (VWF) concentrates used to treat VWD patients.
The purpose of the study is to assess the efficacy and safety of recombinant von Willebrand factor (rVWF) with or without ADVATE in major and minor elective surgical procedures in adult patients with hereditary severe von Willebrand disease (VWD).