Alternative TitleNovel Pathogenic VPS13A Gene Mutations in Japanese Patients with Chorea-acanthocytosis
Degree Type博士(医学)
Doctor of Philosophy in Medical Science
Note (General)博士論文全文, 博士論文要旨, 最終試験結果の要旨, 論文審査の要旨
Objective
To identify mutations in vacuolar protein sorting 13A (VPS13A) for Japanese patients with suspected chorea-acanthocytosis (ChAc).
Methods
We performed a comprehensive mutation screen, including sequencing and copy number variation (CNV) analysis of the VPS13A gene, and chorein Western blotting of erythrocyte ghosts. As the results of the analysis, 17 patients were molecularly diagnosed with ChAc. In addition, we investigated the distribution of VPS13A gene mutations and clinical symptoms in a total of 39 molecularly diagnosed Japanese patients with ChAc, including 22 previously reported cases.
Results
We identified 11 novel pathogenic mutations, including 1 novel CNV. Excluding 5 patients with the unknown symptoms, 97.1% of patients displayed various neuropsychiatric symptoms or forms of cognitive dysfunction during the course of disease. The patients carrying the 2 major mutations representing over half of the mutations, exon 60–61 deletion and exon 37 c.4411C>T (R1471X), were localized in western Japan.
Conclusions
We identified 13 different mutations in VPS13A, including 11 novel mutations, and verified the clinical manifestations in 39 Japanese patients with ChAc.
Yoshiaki Nishida, Masayuki Nakamura, Yuka Urata, Kei Kasamo, Hanae Hiwatashi, Izumi Yokoyama, Masahiro Mizobuchi, Kotaro Sakurai, Yasushi Osaki, Yukari Morita, Masako Watanabe, Kenji Yoshida, Kiyomi Yamane, Natsuki Miyakoshi, Ryouichi Okiyama, Takehiro Ueda, Noritaka Wakasugi, Yuji Saitoh, Takashi Sakamoto, Yuji Takahashi, Ken Shibano, Hideki Tokuoka, Atsushi Hara, Kazunari Monma, Katsuhisa Ogata, Keita Kakuda, Hideki Mochizuki, Takeo Arai, Manabu Araki, Takeshi Fujii, Kazuto Tsukita, Haruhi Sakamaki-Tsukita and Akira Sano
Novel pathogenic VPS13A gene mutations in Japanese patients with chorea-acanthocytosis
Neurology Genetics 2019;5:e332.
https://doi.org/10.1212/NXG.0000000000000332
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