Creation of a Biological Collection for Medical Research Purposes for Patients at the Reference Center for Rare Diseases of the Blood Vessels of the Brain and Eye at Lariboisière Hospital

Inclusion Criteria: * Confirmed diagnosis of a rare cerebral vascular disease of the brain, including: Familial intracranial aneurysms, cerebral amyloid angiopathy, CADASIL, familial cerebral cavernoma, familial cervical or intracranial artery dissection, vascular leukoencephalopathy (hereditary), familial hemiplegic migraine, cerebral arteriovenous malformation, moya-moya, cerebral venous thrombosis, hereditary retinal tortuosity, cerebro-retinal vasculopathies, other known rare diseases, or other rare diseases that are undetermined or not yet described. * Participation in the MVCR cohort * Adults \>18 years old * Affiliation with French social security or beneficiary - Signature of informed consent Exclusion Criteria: * Incompatibility with long-term follow-up at CERVCO * Patient under guardianship/conservatorship * Pregnant or breastfeeding women * Patient under AME