Due to increasing of life expectancy, patients with von Willebrand disease are exposed to age-related pathologies such as cancer or cardiovascular diseases. Management of thrombotic events is challenging given the inherent bleeding risk in von Willebrand disease. Few data are currently available in the literature.

The aim of the study is to describe the frequency and nature of arterial and venous thromboembolic events and atrial fibrillation in patients with von Willebrand disease in the West of France.

The investigators will perform a retrospective multicenter study conducted in the von Willebrand population of the French West. Von Willebrand adult patients followed in one of the French West medical centers participating in the study, who presented deep vein thrombosis, pulmonary embolism, ischemic stroke, transient ischemic attack, acute coronary syndrome, acute limb ischemia, atrial fibrillation, arteriopathy of the lower limbs, angina will be eligible.

Von Willebrand disease is the most common hereditary bleeding disorder. Due to the development of therapies, life expectancy and life quality are increasing in affected patients. However, certain treatments and/or certain comorbidities associated with venous and arterial thrombotic risks may be present in these patients. In the general population, venous thromboembolic disease, arterial thrombosis and atrial fibrillation are frequent. Their management requires the use of antiaggregants and anticoagulant molecules, themselves associated with a bleeding risk. Few data are currently available in the literature concerning the occurrence of venous and arterial thromboembolic events in patients with von Willebrand disease and their management, in the face of a hemorrhagic risk inherent to their pathology and its increase by anti-aggregant treatments and anticoagulants.

The aim of the study is to describe the frequency and nature of arterial and venous thromboembolic events and atrial fibrillation in patients with von Willebrand disease in the West of France.

The investigators will perform a retrospective multicenter study on data conducted in the French West. The study population is composed of patients with von Willebrand disease followed in a reference center in the French West, have consented to be included in the BERHLINGO database (Base d'Etude et de Recherche pour Les INvestigateurs en Hémostase du Grand-Ouest), and who presented deep vein thrombosis, pulmonary embolism, ischemic stroke, transient ischemic attack, acute coronary syndrome, acute limb ischemia, atrial fibrillation, arteriopathy of the lower limbs, angina. Data about von Willebrand disease, risk factors, event, treatment such as antiaggregants and anticoagulants and complications such as hemorrhage or recurrence, will be collected.

Inclusion Criteria:

• Von Willebrand disease
• Adult
• Followed-up in a reference center of West of France (Caen, Brest, Nantes, Rennes, Le Mans, Angers)
• Consented to be included in BERHLINGO database
• Have presented a thrombotic and/or embolic event or cardiovascular disease including deep vein thrombosis, pulmonary embolism, ischemic stroke, transient ischemic attack, acute coronary syndrome, acute limb ischemia or angina or obliterating arteriopathy of the lower limbs, atrial fibrillation.
• Have not expressed their opposition

Exclusion Criteria:

• - Expression of opposition
• Acquired von Willebrand syndrome
• Patients under legal protection
• Minor

Patients with von Willebrand disease followed in a reference center in the French West and who have consented to be included in the BERHLINGO database (Base d'Etude et de Recherche pour Les INvestigateurs en Hémostase du Grand-Ouest) with a medical history of deep vein thrombosis, pulmonary embolism, ischemic stroke, transient ischemic attack, acute coronary syndrome, acute limb ischemia, angina, obliterating arteriopathy of the lower limbs or atrial fibrillation.

All collected data that underlie results in a publication

Data will be available beginning three month and ending five years following the publication

Data access requests will be reviewed by the internal committee of Brest UH. Requestors will be required to sign and complete a data access agreement.