Impact of Von Willebrand Factor and Its Multimers on Angiogenesis

Inclusion Criteria

• •For patients:
• •Patient with von Willebrand disease proven by genetic analysis of the VWF gene.
• •Lack of treatment that could interfere with angiogenesis.
• •Patient informed by an information note sent to his home, with the possibility of objecting to the use of his blood samples in the context of research.
• •For the control:
• •Patient with a normal coagulation report
• •Absence of abnormal hemorrhagic symptoms
• •Lack of notion of angiodysplasia.
• •Lack of treatment that could interfere with angiogenesis.
• •Patient informed by an information note sent to his home, with the possibility of objecting to the use of his blood samples in the context of research.