Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6809190 | Neurobiology of Aging | 2012 | 7 Pages |
Abstract
Alzheimer's disease (AD) is a genetically complex disorder for which the definite diagnosis is only accomplished postmortem. Mutations in 3 genes (APP, PSEN1, and PSEN2) are known to cause AD, but a large number of familial cases do not harbor mutations in these genes and several unidentified genes that contain disease-causing mutations are thought to exist. We performed whole exome sequencing in a Turkish patient clinically diagnosed with Alzheimer's disease from a consanguineous family with a complex history of neurological and immunological disorders and identified a mutation in NOTCH3 (p.R1231C), previously described as causing cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL). Complete screening of NOTCH3 in a cohort of 95 early onset AD cases and 95 controls did not reveal any additional pathogenic mutations. Although the complex history of disease in this family precluded us to establish segregation of the mutation found with disease, our results show that exome sequencing is a rapid, cost-effective and comprehensive tool to detect genetic mutations, allowing for the identification of unexpected genetic causes of clinical phenotypes. As etiological based therapeutics become more common, this method will be key in diagnosing and treating disease.
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Authors
Rita João Guerreiro, Ebba Lohmann, Emma Kinsella, José Miguel Brás, Nga Luu, Nicole Gurunlian, Burcu Dursun, Basar Bilgic, Isabel Santana, Hasmet Hanagasi, Hakan Gurvit, Jesse Raphael Gibbs, Catarina Oliveira, Murat Emre, Andrew Singleton,