Multimodal Biocollection Linked to the French Register of Intracranial Aneurysms (bCAN)

Nantes University Hospital (NUH)

Status

Begins enrollment this month

Conditions

Aneurysm

Congenital Disease

Brain Aneurysm

Treatments

Other: blood or saliva sample

Study type

Interventional

Funder types

Other

Identifiers

NCT06689410

RC24_0512

Details and patient eligibility

About

The purpose of the bCAN study is to create a prospective collection of multimodal data and human samples, linked to the French Intracranial Aneurysm Registry (FRAN).

The aim of bCAN is to enable risk stratification of ruptured ICAs by redefining "intracranial aneurysm disease". The description of genotypically and phenotypically specific subgroups of cases will pave the way for improved patient management based on new diagnostic/prognostic strategies among AIC carriers, either in a familial context, or at the level of the general population.

Full description

The main objective of bCAN study is to build a predictive model of intracranial aneurysm phenotypes through the combination of information on genetic mutations, imaging findings and ICA rupture characteristics.

The secondary objectives of the bCAN study are (i) to study morphological characterization of ICA and vascular bifurcations, (ii) to deepen knowledge of genotype/clinical and biological phenotype relationships according to the genes identified in the different families, (iii) to research and validate the relationships between genotypes and phenotypes (including rupture) of ICA in a large population of sporadic ICA cases.

Enrollment

1,100 estimated patients

Sex

All

Ages

18+ years old

Volunteers

No Healthy Volunteers

Inclusion and exclusion criteria

Inclusion criteria for sporadic ICA cases:

Any adult patient consulting for a definite and typical bifurcation AIC authenticated on MRI and/or cerebral arteriography
Aneurysm discovered less than a year ago, with initial imaging (MRI and/or CTA and DSA) available
Written consent obtained for study participation
Patient covered by a social security plan

Inclusion criteria for index and related cases (familial forms) of intracranial aneurysms (ICA):

Index case: Any adult patient consulting for a definite and typical bifurcation ICA presenting at least one other case with ICA related to the 1st or 2nd degree (child, parent, brother, sister) detected by MRI with at least one Time of Flight (TOF) sequence.
Family relatives: All 1st- and 2nd-degree relatives (children, parents, brothers, sisters), of legal age, of patients with a family history of definite, typical bifurcation AIC (≥ 2 affected), Screening to be performed using MRI with at least a Time of Flight (TOF) sequence.
Written consent to participate in the study
Patient and relatives covered by a social security plan

Exclusion Criteria:

Syndromic diagnosis known to cause ICA: Marfan syndrome, OSA with SMAD 3, Elhers Danlos syndrome type II and IV, Autosomal Dominant Cystic Fibrosis, Moya-Moya syndrome
AIC with : Dissecting or fusiform, Associated with arteriovenous malformation, Blister-like, Mycotic
Cerebral white matter pathology detected on MRI evoking : Col4a1 mutation
Patient under guardianship or conservatorship
Person under court protection
Contraindication to an MRI scan