CADASIL Clinical Trial
Official title:
Obtention d'un modèle Cellulaire de la Maladie CADASIL à Partir de Fibroblastes cutanés de Patients
Cerebral Autosomal Dominant Arteriopathy with Subcortical Infarcts and Leucoencephalopathy
(CADASIL) is an archetypal small vessel disease of the brain caused by dominant mutations in
the NOTCH3 receptor. Cardinal vascular lesions include deposition of granular osmiophilic
material (GOM) within the basal lamina of smooth muscle cells, progressive smooth muscle
cell loss, and fibrosis of the media. Pathogenic mutations alter the number of cysteine
residues in the extracellular domain of NOTCH3 (Notch3 ECD), leading to its abnormal
accumulation in the GOM deposits. Vascular smooth muscle cell has been identified as the
primary target cell in this disease. Pathophysiological processes leading from NOTCH3
mutations to smooth muscle cell loss remain poorly understood.
The investigators propose to study these mechanisms by reprogramming skin cells to become
stem cells and then differentiating them to vascular smooth muscle cells.
The hypothesis of this study is that the differentiated smooth muscle cells will display the
characteristic features of CADASIL, ie, Notch3 ECD accumulation and GOM deposits.
Status | Enrolling by invitation |
Enrollment | 10 |
Est. completion date | August 2018 |
Est. primary completion date | August 2018 |
Accepts healthy volunteers | No |
Gender | Both |
Age group | 30 Years to 60 Years |
Eligibility |
Inclusion Criteria : - Between 30 and 60 years; - Having a social security scheme or, CMU ; - Diagnosis of CADASIL confirmed by molecular analysis performed previously (missense mutation in the Notch3 gene affecting the number of cysteine in one of the 34 EGFR of NOTCH3 ) ; - No countra-indication for a skin biopsy (ongoing treatment with anti-coagulant, history of bleeding disorder or deficiency of blood clotting factors) ; - Written consent given. Exclusion Criteria : - Patients without social security scheme or, CMU ; - Patients aged under 30 or over 60 years at the time of the first visit ; - Pregnant women beyond the 5th month of pregnancy - Patients who are not able to give informed consent ; - Countra-indication to the achievement of the skin biopsy ( ongoing treatment with anti- coagulant, history of bleeding disorder or deficiency of coagulation factors ) . |
Observational Model: Case-Only, Time Perspective: Prospective
Country | Name | City | State |
---|---|---|---|
France | INSERM | Paris |
Lead Sponsor | Collaborator |
---|---|
Institut National de la Santé Et de la Recherche Médicale, France |
France,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Derivation of iPS cells from skin biopsies of patients with CADASIL | 30 months | No | |
Secondary | Differentiation of iPS cells to vascular smooth muscle cells, phenotypic and mechanistic analyses | Differentiation of iPS cells to vascular smooth muscle cells and phenotypic analysis (12 mois) Mechanistic analyses (12 mois) | 24 mois | No |
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