SCA17 homozygote showing Huntington's disease-like phenotype.

Toyoshima, Yasuko; Yamada, Mitsunori; Onodera, Osamu; Shimohata, Mitsuteru; Inenaga, Chikanori; Fujita, Nobuya; Morita, Masahiro; Tsuji, Shoji et al. · Ann Neurol · 2004

case_report · Level V

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Abstract

We report a homozygous case of spinocerebellar ataxia type 17 with 48 glutamines. The age of the patient at disease onset was not lower than those of heterozygotes with the same CAG-repeat sizes, but the clinical manifestations were rapidly progressive dementia and chorea. Neuronal loss was relatively restricted and most prominent in the Purkinje cell layer and striatum; however, intranuclear neuronal polyglutamine accumulation was widespread, with a high frequency in the cerebral cortex and striatum.

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