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Shimomura R, Yanagishita T, Ishiguro K, Shichiji M, Sato T, Shimojima Yamamoto K, Nagata M, Ishihara Y, Miyashita Y, Ishigaki K, Nagata S, Asano Y, Yamamoto T. Rare mosaic variant of GJA1 in a patient with a neurodevelopmental disorder. Hum Genome Var 2024; 11:2. [PMID: 38221519 PMCID: PMC10788341 DOI: 10.1038/s41439-023-00262-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 12/06/2023] [Accepted: 12/06/2023] [Indexed: 01/16/2024] Open
Abstract
GJA1 is the causative gene for oculodentodigital dysplasia (ODDD). A novel de novo GJA1 variant, NM 000165:c263C > T [p.P88L], was identified in a mosaic state in a patient with short stature, seizures, delayed myelination, mild hearing loss, and tooth enamel hypoplasia. Although the patient exhibited severe neurodevelopmental delay, other clinical features of ODDD, including limb anomalies, were mild. This may be due to differences in the mosaic ratios in different organs.
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Affiliation(s)
- Rina Shimomura
- Department of Pediatrics, Tokyo Women's Medical University, Tokyo, Japan
- Division of Gene Medicine, Graduate School of Medical Science, Tokyo Women's Medical University, Tokyo, Japan
| | - Tomoe Yanagishita
- Department of Pediatrics, Tokyo Women's Medical University, Tokyo, Japan
| | - Kumiko Ishiguro
- Department of Pediatrics, Tokyo Women's Medical University, Tokyo, Japan
| | - Minobu Shichiji
- Department of Pediatrics, Tokyo Women's Medical University, Tokyo, Japan
| | - Takatoshi Sato
- Department of Pediatrics, Tokyo Women's Medical University, Tokyo, Japan
| | - Keiko Shimojima Yamamoto
- Transfusion Medicine and Cell Processing, Tokyo Women's Medical University, Tokyo, Japan
- Institute of Medical Genetics, Tokyo Women's Medical University, Tokyo, Japan
| | - Miho Nagata
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Japan
| | - Yasuki Ishihara
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Japan
| | - Yohei Miyashita
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Japan
- Department of Genomic Medicine, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Keiko Ishigaki
- Department of Pediatrics, Tokyo Women's Medical University, Tokyo, Japan
| | - Satoru Nagata
- Department of Pediatrics, Tokyo Women's Medical University, Tokyo, Japan
| | - Yoshihiro Asano
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Japan
- Department of Genomic Medicine, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Toshiyuki Yamamoto
- Division of Gene Medicine, Graduate School of Medical Science, Tokyo Women's Medical University, Tokyo, Japan.
- Institute of Medical Genetics, Tokyo Women's Medical University, Tokyo, Japan.
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Miyake N, Tsurusaki Y, Fukai R, Kushima I, Okamoto N, Ohashi K, Nakamura K, Hashimoto R, Hiraki Y, Son S, Kato M, Sakai Y, Osaka H, Deguchi K, Matsuishi T, Takeshita S, Fattal-Valevski A, Ekhilevitch N, Tohyama J, Yap P, Keng WT, Kobayashi H, Takubo K, Okada T, Saitoh S, Yasuda Y, Murai T, Nakamura K, Ohga S, Matsumoto A, Inoue K, Saikusa T, Hershkovitz T, Kobayashi Y, Morikawa M, Ito A, Hara T, Uno Y, Seiwa C, Ishizuka K, Shirahata E, Fujita A, Koshimizu E, Miyatake S, Takata A, Mizuguchi T, Ozaki N, Matsumoto N. Molecular diagnosis of 405 individuals with autism spectrum disorder. Eur J Hum Genet 2023:10.1038/s41431-023-01335-7. [PMID: 36973392 DOI: 10.1038/s41431-023-01335-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 02/08/2023] [Accepted: 03/07/2023] [Indexed: 03/29/2023] Open
Abstract
Autism spectrum disorder (ASD) is caused by combined genetic and environmental factors. Genetic heritability in ASD is estimated as 60-90%, and genetic investigations have revealed many monogenic factors. We analyzed 405 patients with ASD using family-based exome sequencing to detect disease-causing single-nucleotide variants (SNVs), small insertions and deletions (indels), and copy number variations (CNVs) for molecular diagnoses. All candidate variants were validated by Sanger sequencing or quantitative polymerase chain reaction and were evaluated using the American College of Medical Genetics and Genomics/Association for Molecular Pathology guidelines for molecular diagnosis. We identified 55 disease-causing SNVs/indels in 53 affected individuals and 13 disease-causing CNVs in 13 affected individuals, achieving a molecular diagnosis in 66 of 405 affected individuals (16.3%). Among the 55 disease-causing SNVs/indels, 51 occurred de novo, 2 were compound heterozygous (in one patient), and 2 were X-linked hemizygous variants inherited from unaffected mothers. The molecular diagnosis rate in females was significantly higher than that in males. We analyzed affected sibling cases of 24 quads and 2 quintets, but only one pair of siblings shared an identical pathogenic variant. Notably, there was a higher molecular diagnostic rate in simplex cases than in multiplex families. Our simulation indicated that the diagnostic yield is increasing by 0.63% (range 0-2.5%) per year. Based on our simple simulation, diagnostic yield is improving over time. Thus, periodical reevaluation of ES data should be strongly encouraged in undiagnosed ASD patients.
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Affiliation(s)
- Noriko Miyake
- Department of Human Genetics, National Center for Global Health and Medicine, Tokyo, Japan.
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan.
| | - Yoshinori Tsurusaki
- Faculty of Nutritional Science, Sagami Women's University, Sagamihara, Japan
| | - Ryoko Fukai
- Department of Neurology and Stroke Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Itaru Kushima
- Department of Psychiatry, Nagoya University Graduate School of Medicine, Nagoya, Japan
- Medical Genomics Center, Nagoya University Hospital, Nagoya, Japan
| | - Nobuhiko Okamoto
- Department of Medical Genetics, Osaka Women's and Children's Hospital, Osaka, Japan
| | - Kei Ohashi
- Department of Pediatrics and Neonatology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Kazuhiko Nakamura
- Department of Neuropsychiatry, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
- Department of Psychiatry, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Ryota Hashimoto
- Department of Pathology of Mental Diseases, National Institute of Mental Health, National Center of Neurology and Psychiatry, Kodaira, Japan
| | - Yoko Hiraki
- Hiroshima Municipal Center for Child Health and Development, Hiroshima, Japan
| | - Shuraku Son
- Department of Psychiatry, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Mitsuhiro Kato
- Department of Pediatrics, Showa University School of Medicine, Tokyo, Japan
| | - Yasunari Sakai
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Hitoshi Osaka
- Department of Pediatrics, Jichi Medical University, Shimotsuke, Japan
| | | | - Toyojiro Matsuishi
- Departments of Pediatrics and Child Health, Kurume University School of Medicine, Kurume, Japan
- Department of Pediatrics, St. Mary's Hospital, Kurume, Japan
| | - Saoko Takeshita
- Department of Pediatrics, Yokohama City University Medical Center, Yokohama, Japan
| | - Aviva Fattal-Valevski
- Pediatric Neurology Institute, Dana-Dwek Children's Hospital, Tel Aviv Medical Center & Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Nina Ekhilevitch
- The Genetics Institute, Rambam Health Care Campus, Haifa, Israel
| | - Jun Tohyama
- Department of Child Neurology, National Hospital Organization Nishiniigata Chuo Hospital, Niigata, Japan
| | - Patrick Yap
- Genetic Health Service New Zealand, Auckland, New Zealand
- Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
| | - Wee Teik Keng
- Genetic Department, Hospital Kuala Lumpur, Kuala Lumpur, Malaysia
| | - Hiroshi Kobayashi
- Department of Stem Cell Biology, Research Institute, National Center for Global Health and Medicine, Tokyo, Japan
| | - Keiyo Takubo
- Department of Stem Cell Biology, Research Institute, National Center for Global Health and Medicine, Tokyo, Japan
| | - Takashi Okada
- Department of Psychiatry, Nagoya University Graduate School of Medicine, Nagoya, Japan
- Department of Developmental Disorders, National Institute of Mental Health, National Center of Neurology and Psychiatry, Kodaira, Japan
| | - Shinji Saitoh
- Department of Pediatrics and Neonatology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Yuka Yasuda
- Department of Pathology of Mental Diseases, National Institute of Mental Health, National Center of Neurology and Psychiatry, Kodaira, Japan
| | - Toshiya Murai
- Department of Psychiatry, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Kazuyuki Nakamura
- Department of Pediatrics, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - Shouichi Ohga
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Ayumi Matsumoto
- Department of Pediatrics, Jichi Medical University, Shimotsuke, Japan
| | - Ken Inoue
- Deguchi Pediatric Clinic, Omura, Japan
- Department of Mental Retardation and Birth Defect Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Japan
| | - Tomoko Saikusa
- Departments of Pediatrics and Child Health, Kurume University School of Medicine, Kurume, Japan
- Department of Pediatrics, St. Mary's Hospital, Kurume, Japan
| | - Tova Hershkovitz
- The Genetics Institute, Rambam Health Care Campus, Haifa, Israel
| | - Yu Kobayashi
- Department of Child Neurology, National Hospital Organization Nishiniigata Chuo Hospital, Niigata, Japan
| | - Mako Morikawa
- Department of Psychiatry, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Aiko Ito
- Department of Pediatrics, Yamagata Prefectural Rehabilitation Center for Children with Disabilities, Yamagata, Japan
| | | | - Yota Uno
- Department of Psychiatry, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Chizuru Seiwa
- Department of Pediatrics, Yamagata Prefectural Rehabilitation Center for Children with Disabilities, Yamagata, Japan
| | - Kanako Ishizuka
- Department of Psychiatry, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Emi Shirahata
- Department of Pediatrics, Yamagata Prefectural Rehabilitation Center for Children with Disabilities, Yamagata, Japan
| | - Atsushi Fujita
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Eriko Koshimizu
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Satoko Miyatake
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
- Department of Clinical Genetics, Yokohama City University Hospital, Yokohama, Japan
| | - Atsushi Takata
- Laboratory for Molecular Pathology of Psychiatric Disorders, RIKEN Center for Brain Science, Wako, Japan
| | - Takeshi Mizuguchi
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Norio Ozaki
- Department of Psychiatry, Nagoya University Graduate School of Medicine, Nagoya, Japan
- Institute for Glyco-core Research (iGCORE), Nagoya University, Nagoya, Japan
| | - Naomichi Matsumoto
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan.
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Huang YC, Chao YC, Lee IC. Syndromic and non-syndromic etiologies causing neonatal hypocalcemic seizures. Front Endocrinol (Lausanne) 2022; 13:998675. [PMID: 36440223 PMCID: PMC9685421 DOI: 10.3389/fendo.2022.998675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 10/26/2022] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND The diagnosis of neonatal hypocalcemic seizures (HS) in newborns is made based on clinical signs and serum calcium level. Their etiology is broad and diverse, and timely detection and initiation of treatment is essential. METHODS We retrospectively reviewed 1029 patients admitted to the neonatal intensive care unit. Neonatal HS were diagnosed in 16 patients, and we compared etiologies and clinical outcomes, including clinical seizures and neurodevelopment at least over 1 year old. RESULTS The etiologies can be broadly categorized into 5 syndromic and 11 non-syndromic neonatal HS. Syndromic neonatal HS included 3 Digeorge syndrome, 1 Kleefstra syndrome and 1 Alström syndrome. Non-syndromic neonatal HS included 8 vitamin D deficiency, 1 hypoparathyroidism, and 2 hypoxic-ischemic encephalopathy. Patients with syndromic neonatal HS were found to have worse clinical outcomes than those with nonsyndromic HS. In eight patients with vitamin D deficiency, neurodevelopment was normal. Five of five patients (100%) with syndromic HS used two or more antiseizure drugs. However, among patients with non-syndromic neonatal HS, only one of 11 (9.1%) used more than one drug (p = 0.001). CONCLUSION This finding highlighted that syndromic hypocalcemic seizures in newborns have worse neurodevelopmental outcomes and are more often difficult to manage, and would benefit from a genetic diagnostic approach.
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Affiliation(s)
- Yi-Chieh Huang
- Division of Pediatric Neurology, Department of Pediatrics, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Yin-Chi Chao
- Division of Pediatric Neurology, Department of Pediatrics, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Inn-Chi Lee
- Division of Pediatric Neurology, Department of Pediatrics, Chung Shan Medical University Hospital, Taichung, Taiwan
- Institute of Medicine, School of Medicine, Chung Shan Medical University, Taichung, Taiwan
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