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Several families with an early-onset form of familial Alzheimer's disease have been found to harbour mutations at a specific codon (717) of the gene for the beta-amyloid precursor protein (APP) on chromosome 21. We now report, a novel base mutation in the same exon of the APP gene which co-segregates in one family with presenile dementia and cerebral haemorrhage due to cerebral amyloid angiopathy. The mutation results in the substitution of alanine into glycine at codon 692. These results suggest that the clinically distinct entities, presenile dementia and cerebral amyloid angiopathy, can be caused by the same mutation in the APP gene.

Original publication

DOI

10.1038/ng0692-218

Type

Journal article

Journal

Nature genetics

Publication Date

06/1992

Volume

1

Pages

218 - 221

Addresses

Department of Biochemistry, Born Bunge Foundation, University of Antwerp (UIA), Belgium.

Keywords

Humans, Cerebral Amyloid Angiopathy, Cerebral Hemorrhage, Dementia, Alzheimer Disease, Amyloid beta-Protein Precursor, Codon, Pedigree, DNA Mutational Analysis, Point Mutation, Adult, Middle Aged, Female, Male, Genetic Linkage