View clinical trials related to Von Willebrand Diseases.
Filter by:The investigators are going to study von Willebrand antigen and activity levels in patients with inflammatory bowel disease. The study will be on 46 patients who were diagnosed with inflammatory bowel disease mainly ulcerative colitis and Crohn's disease divided into two arms; group A will include 23 cases with active IBD(cases)status and group B will include 23 cases with inactive IBD status(control) to compare the vWF antigen and activity ( expected to be higher in active disease group. The investigators will follow all of the patients for any arterial or venous thrombosis to evaluate IBD as a risk factor of thrombosis, on the other hand, they are looking to detect cases of acquired von Willebrand syndrome in some cases with bleeding that not explained by the inflammatory bowel disease status. The aim of the work: 1. Assessment of VWF antigen in patients with inflammatory bowel disease and correlate it to disease activity. 2. Evaluation of VWF antigen as a risk factor for thrombosis in inflammatory bowel disease patients. 3. Detection of acquired von Willebrand disease in inflammatory bowel disease.
Early Check provides voluntary screening of newborns for a selected panel of conditions. The study has three main objectives: 1) develop and implement an approach to identify affected infants, 2) address the impact on infants and families who screen positive, and 3) evaluate the Early Check program. The Early Check screening will lead to earlier identification of newborns with rare health conditions in addition to providing important data on the implementation of this model program. Early diagnosis may result in health and development benefits for the newborns. Infants who have newborn screening in North Carolina will be eligible to participate, equating to over 120,000 eligible infants a year. Over 95% of participants are expected to screen negative. Newborns who screen positive and their parents are invited to additional research activities and services. Parents can enroll eligible newborns on the Early Check electronic Research Portal. Screening tests are conducted on residual blood from existing newborn screening dried blood spots. Confirmatory testing is provided free-of-charge for infants who screen positive, and carrier testing is provided to mothers of infants with fragile X. Affected newborns have a physical and developmental evaluation. Their parents have genetic counseling and are invited to participate in surveys and interviews. Ongoing evaluation of the program includes additional parent interviews.
This study will measure primary hemostatic ability using the T-TAS 01 System with PL chip, with a comparison to clinical truth.
During treatments with extracorporeal circuits such as extracorporeal membrane oxygenation (ECMO) degradation of high molecular weight (HMW) of von Willebrand factor (vWF) multimers occur leading to an acquired von Willebrand disease. This disease is associated with increased bleeding and requirement for the transfusion with allogenic blood products especially packed red blood cells (PRBCs). A continuous treatment with von Willebrand factor concentrate (vWFC) may restore the multimers and bleeding can be avoided. Therefore a randomized, double-blind, prospective, controlled, two-arm clinical trial was designed, comparing patients receiving vWFC versus placebo.
The primary aim of this study is to prospectively investigate the current bleeding tendency of children and adults with VWD.
The WBDR is an international observational disease registry of patients with hemophilia. It will provide a platform for a network of hemophilia treatment centres (HTCs) around the world to collect uniform and standardized patient data and guide clinical practice. With informed consent from the patient, the WBDR stores anonymous data about the person's disease, such as hemophilia type and severity, symptoms, and treatment.
The Low Von Willebrand in Ireland Cohort (LoVIC) study focuses on the bleeding phenotype and biological mechanisms underlying low Von Willebrand Factor (VWF) levels.
Von Willebrand disease (VWD) is the most common inherent bleeding disorder resulting in prolonged bleeding time. Gingival bleeding is a frequently reported symptom of VWD. However, gingival bleeding is also known as a leading symptom of plaque-induced gingivitis and untreated periodontal disease. Gingival bleeding in VWD patients may be triggered by gingival inflammation and not a genuine symptom. Thus, this study evaluates whether type 2 and 3 VWD determines an increased susceptibility to gingival bleeding in response to the oral biofilm.
ECMO has improved the outcome of heart or respiratory failure and carcinogenic shock and are increasingly used. However bleeding complications occurring in up to 50% of patients are poorly understood and worsen the overall results. The aim is to investigate the occurence of bleeding and its frequency according to the type of ECMO either veno-arterial or veno-venous. The investigators also want to assess the relation of bleeding with von Willebrand Factor defects.
The purpose of this phase 3 study is to investigate the efficacy and safety, including immunogenicity, thrombogenicity and hypersensitivity reactions, as well as pharmacokinetics (PK), health related quality of life (HRQoL) and pharmacoeconomics of prophylactic treatment with recombinant von Willebrand factor (rVWF) (vonicog alfa) in adult participants with severe von Willebrand disease (VWD).