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Vestibular Dysfunction in Replication Factor C Subunit 1 (RFC1) Spectrum Disorder Mitsuhiro Aoki 1 , Kyoko Maruta 2 , Muhamad Asem Almansour 3 1Center for Dizziness and Deafness, Department of Otolaryngology, Ogaki Tokushukai Hospital 2Department of Neurology, National Hospital Organization Minamikyushu National Hospital 3Department of Neurology, The University of Tokyo Keyword: CANVAS , 両側前庭機能障害 , 温度刺激検査 , vHIT , VEMP , cerebellar ataxia with neuropathy and vestibular areflexia syndrome , bilateral vestibular dysfunction , caloric test , video Head Impulse Test , vestibular evoked myogenic potential pp.1261-1266
Published Date 2022/11/1
DOI https://doi.org/10.11477/mf.1416202225
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Abstract

More than 90% of replication factor c subunit 1 (RFC1) gene-related spectrum disorders such as cerebellar ataxia with neuropathy and vestibular areflexia syndrome (CANVAS) have bilateral vestibular dysfunction. A case with CANVAS presented in this paper showed repeat extension of AAGGG in the intron region of the RFC1 gene, and showed bilateral vestibular dysfunction in caloric test, vestibular evoked myogenic potential, video Head Impulse Test and rotary chair test. Visual enhanced vestibulo-ocular reflex tests also revealed abnormalities, suggesting the presence of combined lesions of the cerebellum and brainstem including vestibular nuclei.


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

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