Journal
JOURNAL OF ALZHEIMERS DISEASE
Volume 17, Issue 2, Pages 383-389Publisher
IOS PRESS
DOI: 10.3233/JAD-2009-1061
Keywords
Alzheimer's disease; amyloid-beta; A beta PP A713T mutation; cerebrovascular lesions; vascular risk factors; white matter lesions
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Funding
- Italian Ministry of Health [4/2760-P/I.9.ab, RFPS-2006-7-334858]
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Mutations in the amyloid-beta protein precursor (A beta PP) gene can cause autosomal dominant early-onset Alzheimer's disease, or Alzheimer's disease (AD) associated with cerebral amyloid angiopathy (CAA), cerebral hemorrhage, or both. We have previously reported that the A beta PP A713T mutation is associated with AD and subcortical ischemic lesions at magnetic resonance imaging in a large family which neuropathology confirmed CAA, stroke, and AD lesions. The objective of this clinical and molecular study was to investigate A beta PP gene mutations in 59 patients affected by AD with cerebrovascular lesions (CVLs) and a family history of dementia. We identified three affected subjects with the A beta PP A713T mutation. Since the prevalence of this mutation worldwide is very low, a common founder could exist in southern Italy. The pathogenicity of this mutation was confirmed and the clinical AD phenotype with CVLs seems to be a distinctive feature in the southern Italian population. The identification of these patients suggests that genetic epidemiology in large cohorts of familial late onset AD with CVLs would increase the probability of identifying A beta PP mutations.
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