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Related Experiment Videos

A new de novo Notch3 mutation causing CADASIL.

E Coto1, M Menéndez, R Navarro

  • 1Genetica Molecular, Hospital Central de Asturias, Servicio de Salud del Principado de Asturias, Spain. eliecer.coto@sespa.princast.es

European Journal of Neurology
|June 27, 2006
PubMed
Summary
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Cerebral autosomal dominant arteriopathy with subcortical infarcts and leucoencephalopathy (CADASIL) can occur without a family history. A novel Notch3 mutation was identified in a patient presenting with CADASIL symptoms, highlighting the importance of genetic testing.

Area of Science:

  • Neurogenetics
  • Vascular Neurology

Background:

  • Cerebral autosomal dominant arteriopathy with subcortical infarcts and leucoencephalopathy (CADASIL) is a common hereditary stroke disorder.
  • Clinical manifestations include stroke, migraine with aura, mood disorders, and dementia.
  • Pathogenic mutations in the Notch3 gene, particularly those affecting cysteine residues, are implicated in most familial cases.

Observation:

  • A 44-year-old patient presented with clinical features consistent with CADASIL.
  • Genetic analysis revealed a novel Notch3 mutation (cys128-->gly).
  • The patient's parents were healthy and did not carry the identified mutation.

Findings:

  • Identification of a new Notch3 mutation (cys128-->gly) in a patient with CADASIL.
  • This mutation was *de novo*, as it was not present in the unaffected parents.

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Implications:

  • Genetic analysis of the Notch3 gene is crucial for diagnosing CADASIL, even in sporadic cases.
  • This finding expands the mutational spectrum of Notch3 in CADASIL.
  • Highlights the potential for *de novo* mutations in hereditary neurological disorders.