A core outcome set for prophylaxis and perioperative treatment of von Willebrand disease: The coreVWD initiative.

Introduction: Treatment options are expanding for von Willebrand disease (VWD). A core outcome set (COS)-a minimum set of agreed-upon outcomes to be used in every clinical trial for a given condition-provides guidance on which outcomes are most important to measure to ensure necessary data is collected for a variety of stakeholders and enable comparison across products and trials.

Aim: coreVWD aimed to develop a COS for trials for prophylaxis and perioperative treatments for VWD.

Reduced prevalence of arterial thrombosis in von Willebrand disease.

Background: High von Willebrand factor (VWF) levels are an established risk factor for arterial thrombosis, including coronary heart disease and ischemic stroke. It has been hypothesized that von Willebrand disease (VWD) patients are protected against arterial thrombosis; however, this has never been confirmed in clinical studies.

Objectives: To investigate the prevalence of arterial thrombosis in VWD patients relative to the general population.

Determinants of bleeding phenotype in adult patients with moderate or severe von Willebrand disease.

We performed a nation-wide cross-sectional study to evaluate determinants of bleeding symptoms in a large unselected cohort of adults with von Willebrand disease (VWD). VWD patients were included (n=664), based on lowest historically measured VWF:Ag and VWF:Act levels ≤30 U/dl. Menorrhagia (85%), cutaneous bleeding (77%), bleeding from minor wounds (77%) and oral-cavity bleeding (62%) occurred most frequently.

Health-related quality of life among adult patients with moderate and severe von Willebrand disease.

Summary Background: von Willebrand Disease (VWD) is the most frequent inherited bleeding disorder. It is unknown how this disorder affects quality of life.

Objectives: This nationwide multicenter cross-sectional study determined health-related quality of life (HR-QoL) in adult patients with moderate or severe VWD, and assessed whether bleeding severity and type of VWD are associated with HR-QoL.