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Impact of C9orf72 on Japanese Patients with Amytrophic Lateral Sclerosis (ALS)/Frontotemporal Dementia (FTD) Hiroyuki Tomiyama 1 1Department of Neurology, Ohkawara Neurosurgical Hospital Keyword: C9orf72 , 筋萎縮性側索硬化症 , ALS , 前頭側頭型認知症 , FTD , 原発性進行性失語 , PPA , 遺伝子 , 家族歴 , amyotrophic lateral sclerosis , frontotemporal dementia , primary progressive aphasia , gene , family history pp.1190-1208
Published Date 2019/11/1
DOI https://doi.org/10.11477/mf.1416201429
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Abstract

In 2011, C9orf72 hexanucleotide (GGGGCC) repeat expansion (HRE) in intron 1 was reported as the most common cause of sporadic and familial amyotrophic lateral sclerosis (ALS)/frontotemporal dementia (FTD) in the Caucasian population. In the Japanese population, the C9orf72 repeat expansion was found to account for 0.2% cases of sporadic ALS and 2.6% of familial ALS. Notably, among individuals in the Kii peninsula which has recorded high incidence of ALS or ALS/PDC (parkinsonism-dementia complex), the frequency of C9orf72 repeat expansion was 20% (3/15) indicating high prevalence. It is important to obtain detailed family history of ALS and FTD to understand the cause of the diseases including the C9orf72 mutation.


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電子版ISSN 1344-8129 印刷版ISSN 1881-6096 医学書院

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