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NovelPRNP sequence variant associated with familial encephalopathy

✍ Scribed by Cerven�kov�, Larisa; Buetefisch, Cathrin; Lee, Hee-Suk; Taller, Inna; Stone, Gary; Gibbs, Clarence J.; Brown, Paul; Hallett, Mark; Goldfarb, Lev G.

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 18 KB
Volume: 88
Category: Article
ISSN: 0148-7299
DOI: 10.1002/(sici)1096-8628(19991215)88:6<653::aid-ajmg14>3.0.co;2-e

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✦ Synopsis

Human transmissible spongiform encephalopathies (TSEs) are a group of chronic progressive neurodegenerative disorders that may be hereditary, infectious, or sporadic. Hereditary TSEs are associated with mutations in the PRNP gene on chromosome 20p12-pter. We report on a family in which seven patients developed limb and truncal ataxia, dysarthria, myoclonic jerks, and cognitive decline. The age of onset in the 30s, 40s, or 50s, prolonged disease duration, cerebellar atrophy on imaging, and the presence of synchronic periodic discharges on electroencephalogram suggested a familial encephalopathy resembling Gerstmann-Stra ¨ussler-Scheinker disease. A novel H187R mutation has been identified in affected, but not in unaffected, family members or unrelated controls suggesting a pathogenic role for this mutation. Am. J. Med. Genet. (Neuropsychiatr. Genet.

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