Session Details

[P2-04]Poster Session 2-04 Mendelian Disorders

Fri. Dec 19, 2025 5:50 PM - 6:50 PM JST
Fri. Dec 19, 2025 8:50 AM - 9:50 AM UTC
Poster Room 1 (301+302, 3F, PACIFICO Yokohama)

[P2-04-1]A heterozygous germline deletion within USP8 causes severe neurodevelopmental delay with multiorgan abnormalities

Masamune Sakamoto1,2,3, Kenji Kurosawa4, Koji Tanoue5, Kazuhiro Iwama1,6, Fumihiko Ishida6, Yoshihiro Watanabe7, Saoko Takeshita8, Nobuhiko Okamoto9, Naomi Tsuchida1,3, Yuri Uchiyama1,3, Eriko Koshimizu1, Atsushi Fujita1, Satoko Miyatake1,10, Takeshi Mizuguchi1, Naomichi Matsumoto1 (1.Department of Human Genetics, Graduate School of Medicine, Yokohama City University, Yokohama, Japan, 2.Department of Pediatrics, Graduate School of Medicine, Yokohama City University, Yokohama, Japan, 3.Department of Rare Disease Genomics, Yokohama City University Hospital, Yokohama, Japan, 4.Division of Medical Genetics, Kanagawa Childrenʼs Medical Center, Yokohama, Japan, 5.Department of General Medicine, Kanagawa Childrenʼs Medical Center, Yokohama, Japan, 6.Perinatal Center for Maternity and Neonate, Yokohama City University Medical Center, Yokohama, Japan, 7.Childrenʼs Medical Center, Yokohama City University Medical Center, Yokohama, Japan, 8.Department of Child Neurology, Yokohama Medical and Welfare Center Konan, Yokohama, Japan, 9.Department of Medical Genetics, Osaka Womenʼs and Childrenʼs Hospital, Izumi, Japan, 10.Department of Clinical Genetics, Yokohama City University Hospital, Yokohama, Japan)

[P2-04-2]Pathology of mice carrying exon 21-skipping variant of Slc12a2, a responsible gene of hereditary hearing loss DFNA78

Hideki Mutai1,2, Yukiko Kuroda3, Shinobu Noji3, Saki Ichikawa4,5,8, Koichi Matsuo3, Satoshi Tanaka5, Naoyuki Kataoka5, Masato Fujioka1,6, Tatsuo Matsunaga2,7 (1.Molecular Genetics, Kitasato Univ. School of Medicine, Kanagawa, Japan, 2.National Institute of Sensory Organs, NHO Tokyo Medical Center, Tokyo, Japan, 3.Lab. Cell and Tissue Biology, Keio Univ. School of Medicine, Tokyo, Japan, 4.Dept. Biophysics and Biochemistry, Faculty of Science, Univ. Tokyo, Tokyo, Japan, 5.Lab. Cellular Biochemistry Dept. Animal Resource Sciences / Veterinary Medical Sciences, Graduate School of Agricultural and Life Sceinces, Univ. Tokyo, Tokyo, Japan, 6.Keio University Regenerative Medicine Research Center, Tokyo, Japan, 7.Medical Genetics Center, NHO Tokyo Medical Center, Tokyo, Japan, 8.Graduate School of Pharmaceutical Sciences, Univ. Tokyo, Tokyo, Japan)

[P2-04-3]Genotype-phenotype correlation in Usher syndrome and the related hearing loss

Haruka Murakami1, Satomi Inoue1, Kiyomitsu Nara2, Reiko Muramatsu2, Kayo Momozawa2, Natsumi Yoshida2, Yumika Fue2, Yoko Karino2, Hideki Mutai2,3, Syujiro Minami4, Kazuki Yamazawa1, Tatsuo Matsunaga1,2,4 (1.Department of Medical Genetics, NHO Tokyo Medical Center, Tokyo, Japan, 2.Division of Hearing and Balance Research, NHO Tokyo Medical Center, Tokyo, Japan, 3.Molecular Genetics, Kitasato University School of Medicine, Kanagawa, Japan, 4.Department of Otorhinolaryngology, NHO Tokyo Medical Center, Tokyo, Japan)

[P2-04-4]A Japanese Adult Female with Primary Ciliary Dyskinesia Due to a Homozygous DRC1 Exon 1 to 4 Deletion

Shusuke Yasuura1, Yuji Miyoshi1, Kengo Murata2, Mikio Takamori2 (1.Department of Genomic Medicine, Tokyo Metroporitan Tama Medical Center, Tokyo, Japan, 2.Department of Respiratory Medicine & Oncology, Tokyo Metroporitan Tama Medical Center, Tokyo, Japan)

[P2-04-5]A novel intronic variant in FRMPD4 associated with X-linked neurodevelopmental disorder

Tomoko Satake1, Yasuhiro Kawai2, Koki Nagai2, Takuya Naruto1, Yukiko Kuroda2 (1.Clinical Research Institute, Kanagawa Childrenʼs Medical Center, Yokohama, Japan, 2.Division of Medical Genetics, Kanagawa Childrenʼs Medical Center, Yokohama, Japan)

[P2-04-6]Hemizygous SMARCA1 variants cause X-linked intellectual disability

Naoto Nishimura1, Takeshi Mizuguchi1, Keisuke Hamada2, Kotaro Yuge3, Masamune Sakamoto1,4, Naomi Tsuchida1,4, Yuri Uchiyama1,4, Atsushi Fujita1, Eriko Koshimizu1, Kazuharu Misawa5,6, Satoko Miyatake1,7, Yoriko Watanabe3,8, Hitoshi Osaka9, Koh-Ichiro Yoshiura10, Kazuhiro Ogata2,11, Naomichi Matsumoto1,4,7 (1.Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan, 2.Department of Biochemistry, Yokohama City University Graduate School of Medicine, Yokohama, Japan, 3.Department of Pediatrics and Child Health, Kurume University School of Medicine, Kurume, Japan, 4.Department of Rare Disease Genomics, Yokohama City University Hospital, Yokohama, Japan, 5.Yokohama City University Graduate School of Data Science, Yokohama, Japan, 6.RIKEN Center for Advanced Intelligence Project, Tokyo, Japan, 7.Department of Clinical Genetics, Yokohama City University Hospital, Yokohama, Japan, 8.Research Institute of Medical Mass Spectrometry, Kurume University School of Medicine, Kurume, Japan, 9.Department of Pediatrics, Jichi Medical University, Tochigi, Japan, 10.Department of Human Genetics and Leading Medical Research Core Unit, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan, 11.Graduate School, International University of Health and Welfare, Tokyo, Japan)

[P2-04-7]A familial case of neurodevelopmental disorders caused by a maternally inherited variant in the KMT5B gene

Kyoko Takano1,2, Kumiko Yanagi3,4, Yuji Inaba5, Tomomi Yamaguchi1,2,6, Keiko Wakui1,2, Tomoki Kosho1,2,6,7,8 (1.Center for Medical Genetics, Shinshu University Hospital, Matsumoto, Japan, 2.Department of Medical Genetics, Shinshu University School of Medicine, Matsumoto, Japan, 3.Department of Genome Medicine, National Center for Child Health and Development, Tokyo, Japan, 4.Initiative on Rare and Undiagnosed Diseases in Pediatrics, Tokyo, Japan, 5.Division of Neuropediatrics, Nagano Childrenʼs Hospital, Azumino, Japan, 6.Division of Clinical Sequencing, Shinshu University School of Medicine, Matsumoto, Japan, 7.Research Center for Supports to Advanced Science, Shinshu University, Matsumoto, Japan, 8.BioBank Shinshu, Shinshu University Hospital, Matsumoto, Japan)

[P2-04-8]Long-read RNA-Seq reveals widespread transcript isoform changes in an IFAP syndrome patient with an MBTPS2 variant

Toshihiko Iwaki1,2, Yosuke Nishio2,3, Masanori Fujimoto2, Emi Sato2,6, Yuji Nakamura2,4, Daisuke Ieda2, Sachiyo Takagi5,7, Yutaka Negishi2, Ayako Hattori2,8, Tomoo Ogi3, Shinji Saitoh2 (1.Department of Pediatrics, Gamagori City Hospital, Gamagori, Japan, 2.Department of Pediatrics and Neonatology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan, 3.Department of Genetics, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Japan, 4.Department of Neurosciences, School of Medicine, University of California, San Diego, La Jolla, CA, USA, 5.Department of Geriatric and Environmental Dermatology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan, 6.Department of Pediatrics, Aichi Prefectural Welfare Federation of Agricultural Cooperatives Kainan Hospital, Yatomi, Japan, 7.Department of Dermatology, Nagoya City University Mirai Kousei Hospital, Nagoya, Japan, 8.Department of Pediatrics, Nagoya City University East Medical Center, Nagoya, Japan)

[P2-04-9]Genomic alteration in a case of synchronous extranodal marginal zone lymphoma with ovarian endometrioid carcinoma

Rose Maria Mathew1, Tsutomu Kouno2, Keiichi Iwaya3, Haruhiko Sugimura4, Hirofumi Nakaoka5 (1.Department of Cancer Genome Research, Sasaki Institute, Sasaki Foundation, Tokyo, Japan, 2.Department of Medical Oncology, Kyoundo Hospital, Sasaki Foundation, Tokyo, Japan, 3.Department of Pathology, Kyoundo Hospital, Sasaki Foundation, Tokyo, Japan, 4.Kyoundo Hospital, Sasaki Foundation, Tokyo, Japan, 5.Department of Biomedical Data Science, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan)