Kazuyuki Nakamura¹, Mitsuhiro Kato^{1, 2}, Takahiro Abiko¹, Takashi Kanbayashi³, Mitsuko Nakashima^{4, 5}, Hirotomo Saitsu^{4, 5}, Naomichi Matsumoto⁵ (Department of Pediatrics, Yamagata University Faculty of Medicine, Yamagata, Japan¹, Department of Pediatrics, Showa University School of Medicine, Tokyo, Japan², Department of Psychiatry, Akita University Graduate School of Medicine, Akita, Japan³, Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan⁴, Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan⁵)

Hirofumi Kashii^{1, 2}, Itaru Hayakawa², Hiroshi Terashima², Rika Kosaki³, Kenjiro Kosaki⁴, Hiroshi Watanabe¹, Masaya Kubota² (Department of Pediatrics, Teikyo University Hospital, Mizonokuchi, Kawasaki, Japan¹, Division of Neurology, National Center for Child Health and Development, Tokyo, Japan², Division of Medical Genetics, National Center for Child Health and Development, Tokyo, Japan³, Center for Medical Genetics, Keio University School of Medicine, Tokyo, Japan⁴)

Yuji Nakamura¹, Ayako Hattori¹, Masataka Fukuoka², Mitsuko Nakashima³, Atsushi Ishii⁴, Daisuke Ieda¹, Ikumi Hori¹, Yutaka Negishi¹, Naoki Ando^{1, 5}, Ichiro Kuki², Naomichi Matsumoto³, Shinichi Hirose⁴, Shinji Saitoh¹ (Department of Pediatrics and Neonatology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan¹, Department of Pediatric Neurology, Osaka City General Hospital, Osaka, Japan², Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan³, Department of Pediatrics, School of Medicine, Fukuoka University, Fukuoka, Japan⁴, Josai Kids Clinic, Nagoya, Japan⁵)

Takeshi Kouga¹, Hitoshi Osaka¹, Chihiro Ohba², Eriko Jimbo¹, Takanori Yamagata¹, Hirotomo Saitsu³, Naomichi Matsumoto² (Department of Pediatrics, Jichi Medical University, Tochigi, Japan¹, Department of Human Genetics, Graduate School of Medicine, Yokohama City University, Yokohama, Japan², Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan³)

Naoko Ishihara¹, Misa Miyake¹, Yoshiki Kawamura¹, Hidehito Inagaki², Takema Kato², Makiko Tsutsumi², Tadayoshi Hata³, Tetsushi Yoshikawa¹, Hiroki Kurahashi² (Department of Pediatrics, Fujita Health University School of Medicine, Toyoake, Japan¹, Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan², Faculty of Medical Technology, Fujita Health University School of Health Sciences, Toyoake, Japan³)

Ayaka Hirasawa¹, Akihiko Ishiyama¹, Eri Takeshita¹, Yuko Shimizu—motohashi¹, Takashi Saito¹, Hirofumi Komaki¹, Eiji Nakagawa¹, Kenji Sugai¹, Shota Yuasa², Kohei Hamanaka³, Satoko Miyatake³, Naomichi Matsumoto³, Masayuki Sasaki¹ (Department of Child Neurology, National Center Hospital, National Center of Neurology and Psychiatry（NCNP）, Tokyo, Japan¹, Department of Pediatrics, Kameda Medical Center, Chiba, Japan², Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan³)