Journal
JOURNAL OF THE NEUROLOGICAL SCIENCES
Volume 260, Issue 1-2, Pages 78-82Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jns.2007.04.013
Keywords
presenilin 1; early onset; familial Alzheimer's disease; spastic paraparesis
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Early onset familial Alzheimer's disease (EOFAD) has been associated with mutations in three genes, of which presenilin 1(PSEN1) mutations are the most frequent. Several families with an association of progressive dementia and spastic paraplegia caused by PSEN1 mutations have been described. Here we described a novel PSEN1 mutation that was associated with dementia and spastic paraplegia in a family with 5 affected individuals in three generations. The proband was a 44-year-old woman who presented with 5 years history of progressive difficulties in walking, cognition and visuospatial impairment. Her maternal grandmother, mother and two maternal aunts also had similar neurological presentation. Molecular genetic analysis showed a missense mutation predicted to substitute an arginine residue for a serine residue at position 278 in the PSEN1 polypeptide (Arg278Ser). The novel PSEN1 mutation identified in this patient adds to the diverse list of existing mutations causing EOFAD associated with spastic paraparesis. (C) 2007 Elsevier B.V. All rights reserved.
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