NOTCH3 mutations in a cohort of Portuguese patients within CADASIL spectrum phenotype.
Neurogenetics
; 23(1): 1-9, 2022 01.
Article
en En
| MEDLINE
| ID: mdl-34851492
ABSTRACT
Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) is the most common inherited cerebral small vessel disease. It is caused by mutations in the NOTCH3 gene, which encodes a membranebound receptor protein with three main distinct functional domains. Thus far, several different NOTCH3 mutations, most of them cysteine altering variants, have been described and although they tend to cluster in certain exons, their distribution varies in different geographically populations. Therefore, in this study, we describe the mutation analysis of NOTCH3 gene in 24 Portuguese families with small vessel disease suspected to have CADASIL from the central region of Portugal. The genetic analysis revealed 15 different heterozygous variants, eight pathogenic cysteine altering variants, six cysteine sparing variants and one nonsense variant, located mainly in the exons 4, 8 and 11. Thus, in our population, the genetic testing should initially be focused on these exons. In addition, the genetic findings broaden the mutational and clinical spectrum of CADASIL related phenotype and provide additional evidences for genetic counseling and clinical management.
Palabras clave
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
CADASIL
/
Receptor Notch3
Límite:
Humans
País/Región como asunto:
Europa
Idioma:
En
Revista:
Neurogenetics
Asunto de la revista:
GENETICA
/
NEUROLOGIA
Año:
2022
Tipo del documento:
Article
País de afiliación:
Portugal