Hidehiro Shibayama¹, Shun Akaike¹, Kadsue Tajima¹, Ryoko Takeuchi¹, Fumiaki Katada¹, Susumu Sato¹, Toshio Fukutake¹, Takashi Matsukawa², Hiroyuki Ishiura³, Shoji Tsuji² (1.Department of Neurology, Kameda Medical Center, Japan, 2.Department of Molecular Neurology, Graduate School of Medicine, The University of Tokyo, 3.Department of Neurology, The University of Tokyo)

Akira Matsushima¹, Kunihiro Yoshida² (1.JA Nagano Koseiren Kakeyu-Misayama Rehabilitation Center Kakeyu Hospital, Japan, 2.Department of Brain Disease Research, Shinshu University School of Medicine)

Katsuya Nakamura^1,2, Masahiro Biyajima², Hideo Makishita³, Minori Kodaira², Kunihiro Yoshida⁴, Tomomi Yamaguchi^1,5, Tomoki Kosho^1,5, Yoshiki Sekijima² (1.Center for Medical Genetics, Shinshu University Hospital, Japan, 2.Shinshu University School of Medicine, Japan, 3.Department of Neurology, Hokushin General Hospital, Japan, 4.Division of Neurogenetics, Department of Brain Disease Research, Shinshu University School of Medicine, Japan, 5.Department of Medical Genetics, Shinshu University School of Medicine, Japan)

Shinji Oda, Yuji Saitoh, Yuji Takahashi, Hidehiro Mizusawa, Japan Consortium of Ataxias (Department of Neurology, National Center Hospital, National Center of Neurology and Psychiatry, Japan)

Cheng-tsung Hsiao^1,2, Fu Ssu-ju², Tang Chih-yung^2,3, Soong Bing-wen³, Jeng Chung-jiuan⁴ (1.Department of Internal Medicine, Taipei Veterans General Hospital Taoyuan Branch, Taiwan, 2.Graduate Institute of Physiology, National Taiwan University, Taiwan, 3.Department of Neurology, Shuang Ho Hospital, and Taipei Neuroscience Institute, Taipei Medical University, Taiwan, 4.Institute of Anatomy and Cell Biology, School of Medicine, National Yang-Ming University, Taiwan)