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OBJECTIVES: I. Evaluate the effect of a new von Willebrand factor concentrate on bleeding time, in vivo recovery, and circulating half-life of the infused factor in patients with von Willebrand's disease.
II. Assess the safety of von Willebrand factor in these patients.
PROTOCOL OUTLINE: Patients receive 1 dose of von Willebrand factor concentrate. Timed blood studies are performed for the next 96 hours.
Patients are followed every 2 weeks for 16 weeks, and at 24, 36, and 52 weeks.
Endpoint Classification: Safety/Efficacy Study, Primary Purpose: Treatment
Von Willebrand's Disease
von Willebrand factor
Office of Rare Diseases (ORD)
Published on BioPortfolio: 2014-08-27T03:58:13-0400
The purpose of this phase 3 study is to investigate the efficacy and safety, including immunogenicity and thrombogenicity of prophylactic treatment with recombinant von Willebrand factor (...
During treatments with extracorporeal circuits such as extracorporeal membrane oxygenation (ECMO) degradation of high molecular weight (HMW) of von Willebrand factor (vWF) multimers occur ...
The Low Von Willebrand in Ireland Cohort (LoVIC) study focuses on the bleeding phenotype and biological mechanisms underlying low Von Willebrand Factor (VWF) levels.
The objectives of this study are to evaluate the immediate tolerability and safety of rVWF:rFVIII in subjects with Type 3 Von Willebrand Disease after administration of various dosages of ...
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 menorrh...
von Willebrand Disease (VWD) is an inherited bleeding disorder caused by quantitative (type 1, 3) or qualitative (type 2) von Willebrand factor (VWF) defect. VWD diagnosis and classification require n...
Diagnosis of von Willebrand disease (VWD) is challenging, particularly for type 1. The current diagnostic guidelines emphasize simultaneous bleeding symptoms and von Willebrand factor (VWF) levels of
The von Willebrand factor (VWF) multimer test is required to correctly subtype qualitative type 2 von Willebrand disease (VWD). The current VWF multimer assays are difficult, nonstandardized, and time...
: Type III von Willebrand's disease (vWD) is an inherited bleeding disorder, which is frequently associated with menorrhagia in women. Treatment options include antifibrinolytics, desmopressin, von Wi...
Diagnosis of von Willebrand disease (VWD) is difficult due to the heterogenic phenotype of patients and to the complex tests that are required for an adequate investigation. The collagen binding assay...
A subtype of von Willebrand disease that results from a partial deficiency of VON WILLEBRAND FACTOR.
A subtype of von Willebrand disease that results from qualitative deficiencies of VON WILLEBRAND FACTOR. The subtype is divided into several variants with each variant having a distinctive pattern of PLATELET-interaction.
A subtype of von Willebrand disease that results from a total or near total deficiency of VON WILLEBRAND FACTOR.
A high-molecular-weight plasma protein, produced by endothelial cells and megakaryocytes, that is part of the factor VIII/von Willebrand factor complex. The von Willebrand factor has receptors for collagen, platelets, and ristocetin activity as well as the immunologically distinct antigenic determinants. It functions in adhesion of platelets to collagen and hemostatic plug formation. The prolonged bleeding time in VON WILLEBRAND DISEASES is due to the deficiency of this factor.
Group of hemorrhagic disorders in which the VON WILLEBRAND FACTOR is either quantitatively or qualitatively abnormal. They are usually inherited as an autosomal dominant trait though rare kindreds are autosomal recessive. Symptoms vary depending on severity and disease type but may include prolonged bleeding time, deficiency of factor VIII, and impaired platelet adhesion.