Abstract:
IMPORTANCE:Posterior cortical atrophy (PCA) is characterized by progressive visuoperceptual and visuospatial deficits and commonly considered to be an atypical variant of Alzheimer disease. Mutations of the GRN gene are responsible for a large phenotypic spectrum, but, to our knowledge, the association of PCA with GRN mutations has never been described. OBSERVATIONS:We studied a patient presenting with insidious impairment of basic visuoperceptual skills and apperceptive visual agnosia with predominant posterior atrophy corresponding to a visual/ventral variant of PCA. A heterozygous p.Arg110* (c.328C>T) GRN mutation was identified in this patient. CONCLUSIONS AND RELEVANCE:This study extends the clinical spectrum of GRN mutations that may be responsible for a PCA phenotype. The GRN phenotypes overlap other degenerative dementias and highlight the limits of actual nosologic boundaries in dementias. The GRN gene should be analyzed in patients with PCA, particularly when the damage progresses to anterior cerebral regions and a family history of dementia is present.
journal_name
JAMA Neuroljournal_title
JAMA neurologyauthors
Caroppo P,Belin C,Grabli D,Maillet D,De Septenville A,Migliaccio R,Clot F,Lamari F,Camuzat A,Brice A,Dubois B,Le Ber Idoi
10.1001/jamaneurol.2014.3308subject
Has Abstractpub_date
2015-02-01 00:00:00pages
224-8issue
2eissn
2168-6149issn
2168-6157pii
2084838journal_volume
72pub_type
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