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Zou J, Wang F, Gong Z, Wang R, Chen S, Zhang H, Sun R, Gao C, Li W, Shang J, Zhang J. A Chinese SCA36 pedigree analysis of NOP56 expansion region based on long-read sequencing. Front Genet 2023; 14:1110307. [PMID: 37051597 PMCID: PMC10083286 DOI: 10.3389/fgene.2023.1110307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 03/15/2023] [Indexed: 03/28/2023] Open
Abstract
Introduction: Spinocerebellar ataxias 36 (SCA36) is the neurodegenerative disease caused by the GGCCTG Hexanucleotide repeat expansions in NOP56, which is too long to sequence using short-read sequencing. Single molecule real time (SMRT) sequencing can sequence across disease-causing repeat expansion. We report the first long-read sequencing data across the expansion region in SCA36.Methods: We collected and described the clinical manifestations and imaging features of Han Chinese pedigree with three generations of SCA36. Also, we focused on structural variation analysis for intron 1 of the NOP56 gene by SMRT sequencing in the assembled genome.Results: The main clinical features of this pedigree are late-onset ataxia symptoms, with a presymptomatic presence of affective and sleep disorders. In addition, the results of SMRT sequencing showed the specific repeat expansion region and demonstrated that the region was not composed of single GGCCTG hexanucleotides and there were random interruptions.Discussion: We extended the phenotypic spectrum of SCA36. We applied SMRT sequencing to reveal the correlation between genotype and phenotype of SCA36. Our findings indicated that long-read sequencing is well suited to characterize known repeat expansion.
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Affiliation(s)
- Jinlong Zou
- Department of Neurology, Henan University People’s Hospital, Henan Provincial People’s Hospital, Zhengzhou, China
| | - Fengyu Wang
- Department of Neurology, Henan Provincial People’s Hospital, Zhengzhou University People’s Hospital, Zhengzhou, China
| | - Zhenping Gong
- Department of Neurology, Xinxiang Medical University, Henan Provincial People’s Hospital, Zhengzhou, China
| | - Runrun Wang
- Department of Neurology, Henan Provincial People’s Hospital, Zhengzhou University People’s Hospital, Zhengzhou, China
| | - Shuai Chen
- Department of Neurology, Henan University People’s Hospital, Henan Provincial People’s Hospital, Zhengzhou, China
- Department of Neurology, Henan Provincial People’s Hospital, Zhengzhou University People’s Hospital, Zhengzhou, China
| | - Haohan Zhang
- Department of Neurology, Henan Provincial People’s Hospital, Zhengzhou University People’s Hospital, Zhengzhou, China
- Academy of Medical Sciences, Zhengzhou University, Zhengzhou, Henan, China
| | - Ruihua Sun
- Department of Neurology, Henan Provincial People’s Hospital, Zhengzhou University People’s Hospital, Zhengzhou, China
- Academy of Medical Sciences, Zhengzhou University, Zhengzhou, Henan, China
| | - Chenhao Gao
- Department of Neurology, Henan Provincial People’s Hospital, Zhengzhou University People’s Hospital, Zhengzhou, China
| | - Wei Li
- Department of Neurology, Henan Provincial People’s Hospital, Zhengzhou University People’s Hospital, Zhengzhou, China
| | - Junkui Shang
- Department of Neurology, Henan Provincial People’s Hospital, Zhengzhou University People’s Hospital, Zhengzhou, China
| | - Jiewen Zhang
- Department of Neurology, Henan University People’s Hospital, Henan Provincial People’s Hospital, Zhengzhou, China
- Department of Neurology, Henan Provincial People’s Hospital, Zhengzhou University People’s Hospital, Zhengzhou, China
- Department of Neurology, Xinxiang Medical University, Henan Provincial People’s Hospital, Zhengzhou, China
- Academy of Medical Sciences, Zhengzhou University, Zhengzhou, Henan, China
- *Correspondence: Jiewen Zhang,
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Rapid and comprehensive diagnostic method for repeat expansion diseases using nanopore sequencing. NPJ Genom Med 2022; 7:62. [PMID: 36289212 PMCID: PMC9606279 DOI: 10.1038/s41525-022-00331-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 09/30/2022] [Indexed: 11/23/2022] Open
Abstract
We developed a diagnostic method for repeat expansion diseases using a long-read sequencer to improve currently available, low throughput diagnostic methods. We employed the real-time target enrichment system of the nanopore GridION sequencer using the adaptive sampling option, in which software-based target assignment is available without prior sample enrichment, and built an analysis pipeline that prioritized the disease-causing loci. Twenty-two patients with various neurological and neuromuscular diseases, including 12 with genetically diagnosed repeat expansion diseases and 10 manifesting cerebellar ataxia, but without genetic diagnosis, were analyzed. We first sequenced the 12 molecularly diagnosed patients and accurately confirmed expanded repeats in all with uniform depth of coverage across the loci. Next, we applied our method and a conventional method to 10 molecularly undiagnosed patients. Our method corrected inaccurate diagnoses of two patients by the conventional method. Our method is superior to conventional diagnostic methods in terms of speed, accuracy, and comprehensiveness.
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3
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Chintalaphani SR, Pineda SS, Deveson IW, Kumar KR. An update on the neurological short tandem repeat expansion disorders and the emergence of long-read sequencing diagnostics. Acta Neuropathol Commun 2021; 9:98. [PMID: 34034831 PMCID: PMC8145836 DOI: 10.1186/s40478-021-01201-x] [Citation(s) in RCA: 77] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 05/17/2021] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Short tandem repeat (STR) expansion disorders are an important cause of human neurological disease. They have an established role in more than 40 different phenotypes including the myotonic dystrophies, Fragile X syndrome, Huntington's disease, the hereditary cerebellar ataxias, amyotrophic lateral sclerosis and frontotemporal dementia. MAIN BODY STR expansions are difficult to detect and may explain unsolved diseases, as highlighted by recent findings including: the discovery of a biallelic intronic 'AAGGG' repeat in RFC1 as the cause of cerebellar ataxia, neuropathy, and vestibular areflexia syndrome (CANVAS); and the finding of 'CGG' repeat expansions in NOTCH2NLC as the cause of neuronal intranuclear inclusion disease and a range of clinical phenotypes. However, established laboratory techniques for diagnosis of repeat expansions (repeat-primed PCR and Southern blot) are cumbersome, low-throughput and poorly suited to parallel analysis of multiple gene regions. While next generation sequencing (NGS) has been increasingly used, established short-read NGS platforms (e.g., Illumina) are unable to genotype large and/or complex repeat expansions. Long-read sequencing platforms recently developed by Oxford Nanopore Technology and Pacific Biosciences promise to overcome these limitations to deliver enhanced diagnosis of repeat expansion disorders in a rapid and cost-effective fashion. CONCLUSION We anticipate that long-read sequencing will rapidly transform the detection of short tandem repeat expansion disorders for both clinical diagnosis and gene discovery.
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Affiliation(s)
- Sanjog R. Chintalaphani
- School of Medicine, University of New South Wales, Sydney, 2052 Australia
- Kinghorn Centre for Clinical Genomics, Garvan Institute of Medical Research, Darlinghurst, NSW 2010 Australia
| | - Sandy S. Pineda
- Garvan-Weizmann Centre for Cellular Genomics, Garvan Institute of Medical Research, Darlinghurst, NSW 2010 Australia
- Brain and Mind Centre, University of Sydney, Camperdown, NSW 2050 Australia
| | - Ira W. Deveson
- Kinghorn Centre for Clinical Genomics, Garvan Institute of Medical Research, Darlinghurst, NSW 2010 Australia
- Faculty of Medicine, St Vincent’s Clinical School, University of New South Wales, Sydney, NSW 2010 Australia
| | - Kishore R. Kumar
- Kinghorn Centre for Clinical Genomics, Garvan Institute of Medical Research, Darlinghurst, NSW 2010 Australia
- Molecular Medicine Laboratory and Neurology Department, Central Clinical School, Concord Repatriation General Hospital, University of Sydney, Concord, NSW 2137 Australia
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4
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Kakinuma S, Beppu M, Sawai S, Nakayama A, Hirano S, Yamanaka Y, Yamamoto T, Masafumi C, Aisihaer X, Aersilan A, Gao Y, Sato K, Sakae I, Ishige T, Nishimura M, Matsushita K, Satoh M, Nomura F, Kuwabara S, Tanaka T. Monoamine oxidase B rs1799836 G allele polymorphism is a risk factor for early development of levodopa-induced dyskinesia in Parkinson's disease. eNeurologicalSci 2020; 19:100239. [PMID: 32346620 PMCID: PMC7183157 DOI: 10.1016/j.ensci.2020.100239] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 03/31/2020] [Accepted: 04/02/2020] [Indexed: 12/25/2022] Open
Abstract
Background Dopamine replacement therapy is an established treatment for motor symptoms of Parkinson's disease, but its long-term use is often limited by the eventual development of motor complications, including levodopa-induced dyskinesia. Genetic background, particularly polymorphisms of dopamine metabolism genes, may affect the occurrence of dyskinesia in Parkinson's disease patients. Methods We investigated polymorphisms of dopamine metabolism genes, including catechol-O-methyltransferase, monoamine oxidase B, dopamine beta-hydroxylasedopamine, dopamine receptors D1, D2, and D3, and dopamine transporter, in 110 patients with Parkinson's disease. Cox proportional hazards regression was used to detect associations between genotypes and levodopa-induced dyskinesia. Results Monoamine oxidase B rs1799836 was the only polymorphism correlated with risk of dyskinesia. Patients with an AG or GG genotype were more likely to have dyskinesia than those with an AA genotype (adjusted hazard ratio, 3.41; 95% confidence interval, 1.28-9.10). Also, Kaplan-Meier curves demonstrated that patients with an AG or GG genotype developed dyskinesia earlier than those with an AA genotype (log-rank test, p = .004). Conclusions In Parkinson's disease patients, the monoamine oxidase B rs1799836 G allele is associated with a greater likelihood of developing dyskinesia than the A allele, possibly due to its association with lower monoamine oxidase B activity in the brain. Thus, detection of monoamine oxidase B polymorphisms may be useful for determining the optimal dosing of antiparkinson medications.
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Affiliation(s)
- Shoko Kakinuma
- Department of Molecular Diagnosis, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba 260-8670, Japan
| | - Minako Beppu
- Department of Molecular Diagnosis, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba 260-8670, Japan
| | - Setsu Sawai
- Department of Neurology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba 260-8670, Japan
| | - Akitoshi Nakayama
- Department of Molecular Diagnosis, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba 260-8670, Japan
| | - Shigeki Hirano
- Department of Neurology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba 260-8670, Japan
| | - Yoshitaka Yamanaka
- Department of Neurology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba 260-8670, Japan
| | - Tatsuya Yamamoto
- Department of Neurology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba 260-8670, Japan
| | - Chigusa Masafumi
- Department of Neurology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba 260-8670, Japan
| | - Xiamuxiya Aisihaer
- Department of Molecular Diagnosis, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba 260-8670, Japan
| | - Alimasi Aersilan
- Department of Molecular Diagnosis, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba 260-8670, Japan
| | - Yue Gao
- Department of Molecular Diagnosis, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba 260-8670, Japan
| | - Kenichi Sato
- Department of Medical Technology and Sciences, International University of Health and Welfare, 2-4-16 Momochihama Sawara-ku, Fukuoka City, Fukuoka 814-0001, Japan
| | - Itoga Sakae
- Division of Laboratory Medicine, Chiba University Hospital, 1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba 260-8670, Japan
| | - Takayuki Ishige
- Division of Laboratory Medicine, Chiba University Hospital, 1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba 260-8670, Japan
| | - Motoi Nishimura
- Division of Laboratory Medicine, Chiba University Hospital, 1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba 260-8670, Japan
| | - Kazuyuki Matsushita
- Division of Laboratory Medicine, Chiba University Hospital, 1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba 260-8670, Japan
| | - Mamoru Satoh
- Clinical Proteomics Research Center, Chiba University Hospital, 1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba 260-8670, Japan
| | - Fumio Nomura
- Clinical Proteomics Research Center, Chiba University Hospital, 1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba 260-8670, Japan
| | - Satoshi Kuwabara
- Department of Neurology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba 260-8670, Japan
| | - Tomoaki Tanaka
- Department of Molecular Diagnosis, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba 260-8670, Japan
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Saito N, Ishihara T, Kasuga K, Nishida M, Ishiguro T, Nozaki H, Shimohata T, Onodera O, Nishizawa M. Case Report: A patient with spinocerebellar ataxia type 31 and sporadic Creutzfeldt-Jakob disease. Prion 2018; 12:147-149. [PMID: 29411683 DOI: 10.1080/19336896.2018.1436926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Abstract
We report a Japanese patient with spinocerebellar ataxia type 31 (SCA31) and sporadic Creutzfeldt-Jakob disease (sCJD). A 52-year-old man developed progressive cognitive impairment after the appearance of cerebellar symptoms. Brain MR diffusion-weighted imaging (DWI) demonstrated a slowly expanding hyperintense lesion in the cerebral cortex. The patient was finally diagnosed as having both SCA31 and sCJD by identification of genetic mutations and by real-time quaking-induced conversion (RT-QUIC) analysis of the cerebrospinal fluid (CSF), respectively. Here, we report the clinical details of this rare combined case, with particular reference to the association between prion protein and the early onset of SCA31.
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Affiliation(s)
- Natsumi Saito
- a Department of Neurology , Brain Research Institute, Niigata University , Niigata , Japan
| | - Tomohiko Ishihara
- a Department of Neurology , Brain Research Institute, Niigata University , Niigata , Japan.,b Department of Molecular Neuroscience , Brain Research Institute, Niigata University , Niigata , Japan
| | - Kensaku Kasuga
- a Department of Neurology , Brain Research Institute, Niigata University , Niigata , Japan.,c Department of Molecular Genetics , Brain Research Institute, Niigata University , Niigata , Japan
| | - Mana Nishida
- a Department of Neurology , Brain Research Institute, Niigata University , Niigata , Japan
| | - Takanobu Ishiguro
- a Department of Neurology , Brain Research Institute, Niigata University , Niigata , Japan
| | - Hiroaki Nozaki
- a Department of Neurology , Brain Research Institute, Niigata University , Niigata , Japan.,d Graduate School of Health Sciences , Niigata University , Niigata , Japan
| | - Takayoshi Shimohata
- a Department of Neurology , Brain Research Institute, Niigata University , Niigata , Japan
| | - Osamu Onodera
- a Department of Neurology , Brain Research Institute, Niigata University , Niigata , Japan
| | - Masatoyo Nishizawa
- a Department of Neurology , Brain Research Institute, Niigata University , Niigata , Japan
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6
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Sakakibara R, Tateno F, Kishi M, Tsuyusaki Y, Aiba Y, Terada H, Inaoka T, Sawai S, Kuwabara S, Nomura F. Genetic Screening for Spinocerebellar Ataxia Genes in a Japanese Single-Hospital Cohort. J Mov Disord 2017; 10:116-122. [PMID: 28782341 PMCID: PMC5615168 DOI: 10.14802/jmd.17011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 05/07/2017] [Accepted: 06/15/2017] [Indexed: 11/30/2022] Open
Abstract
Objective
Diagnosis of sporadic cerebellar ataxia is a challenge for neurologists. A wide range of potential causes exist, including chronic alcohol use, multiple system atrophy of cerebellar type (MSA-C), and sporadic late cortical cerebellar atrophy. Recently, an autosomal-dominant spinocerebellar ataxia (SCA) mutation was identified in a cohort of patients with non-MSA-C sporadic cerebellar ataxia. The aim of this study is to genetically screen genes involved in SCA in a Japanese single-hospital cohort.
Methods
Over an 8-year period, 140 patients with cerebellar ataxia were observed. There were 109 patients with sporadic cerebellar ataxia (no family history for at least four generations, 73 patients with MSA-C, and 36 patients with non-MSA-C sporadic cerebellar ataxia) and 31 patients with familial cerebellar ataxia. We performed gene analysis comprising SCA1, 2, 3, 6, 7, 8, 12, 17, 31, and dentatorubro-pallidoluysian atrophy (DRPLA) in 28 of 31 non-MSA-C sporadic patients who requested the test. Familial patients served as a control. Results
Gene abnormalities were found in 57% of non-MSA-C sporadic cerebellar ataxia cases. Among patients with sporadic cerebellar ataxia, abnormalities in SCA6 were the most common (36%), followed by abnormalities in SCA1 (7.1%), SCA2 (3.6%), SCA3 (3.6%), SCA8 (3.6%), and DRPLA (3.6%). In contrast, gene abnormalities were found in 75% of familial cerebellar ataxia cases, with abnormalities in SCA6 being the most common (29%). For sporadic versus familial cases for those with SCA6 abnormalities, the age of onset was older (69 years vs. 59 years, respectively), and CAG repeat length was shorter (23 vs. 25, respectively) in the former than in the latter (not statistically significant). Conclusion
Autosomal-dominant mutations in SCA genes, particularly in SCA6, are not rare in sporadic cerebellar ataxia. The reason for the frequency of mutations in SCA6 remains unclear; however, the reason may reflect a higher age at onset and variable penetrance of SCA6 mutations.
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Affiliation(s)
- Ryuji Sakakibara
- Deparment of Neurology and Internal Medicine, Sakura Medical Center, Toho University, Sakura, Japan
| | - Fuyuki Tateno
- Deparment of Neurology and Internal Medicine, Sakura Medical Center, Toho University, Sakura, Japan
| | - Masahiko Kishi
- Deparment of Neurology and Internal Medicine, Sakura Medical Center, Toho University, Sakura, Japan
| | - Yohei Tsuyusaki
- Deparment of Neurology and Internal Medicine, Sakura Medical Center, Toho University, Sakura, Japan
| | - Yosuke Aiba
- Deparment of Neurology and Internal Medicine, Sakura Medical Center, Toho University, Sakura, Japan
| | - Hitoshi Terada
- Deparment of Radiology, Sakura Medical Center, Toho University, Sakura, Japan
| | - Tsutomu Inaoka
- Deparment of Radiology, Sakura Medical Center, Toho University, Sakura, Japan
| | - Setsu Sawai
- Deparment of Gene Analysis, Chiba University, Chiba, Japan.,Deparment of Neurology, Chiba University, Chiba, Japan
| | | | - Fumio Nomura
- Deparment of Gene Analysis, Chiba University, Chiba, Japan
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Nishimura M, Ueda M, Ebata R, Utsuno E, Ishii T, Matsushita K, Ohara O, Shimojo N, Kobayashi Y, Nomura F. A novel KCNQ1 nonsense variant in the isoform-specific first exon causes both jervell and Lange-Nielsen syndrome 1 and long QT syndrome 1: a case report. BMC MEDICAL GENETICS 2017; 18:66. [PMID: 28595573 PMCID: PMC5465588 DOI: 10.1186/s12881-017-0430-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2016] [Accepted: 05/30/2017] [Indexed: 01/08/2023]
Abstract
Background According to previous KCNQ1 (potassium channel, voltage gated, KQT-like subfamily, member 1) gene screening studies, missense variants, but not nonsense or frame-shift variants, cause the majority of long QT syndrome (LQTS; Romano-Ward syndrome [RWS]) 1 cases. Several missense variants are reported to cause RWS by a dominant-negative mechanism, and some KCNQ1 variants can cause both Jervell and Lange-Nielsen Syndrome (JLNS; in an autosomal recessive manner) and LQTS1 (in an autosomal dominant manner), while other KCNQ1 variants cause only JLNS. The human KCNQ1 gene is known to have two transcript isoforms (kidney isoform and pancreas isoform), and both isoforms can form a functional cardiac potassium channel. Case presentation Here, we report a novel nonsense KCNQ1 variant causing not only JLNS, but also significant QTc prolongation identical to RWS in an autosomal dominant manner. Our case study supports that haploinsufficiency in the KCNQ1 gene is causative of significant QTc prolongation identical to RWS. Interestingly, the nonsense variant (NM_000218.2:c.115G > T [p.Glu39X]) locates in exon 1a of KCNQ1, which is a kidney-isoform specific exon. The variant is located closer to the N-terminus than previously identified nonsense or frame-shift variants. Conclusion To the best of our knowledge, this is the first report showing that a nonsense variant in exon 1a of KCNQ1, which is the kidney-isoform specific exon, causes JLNS. Our findings may be informative to the genetic pathogenesis of RWS and JLNS caused by KCNQ1 variants. Electronic supplementary material The online version of this article (doi:10.1186/s12881-017-0430-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Motoi Nishimura
- Division of Clinical Genetics, Chiba University Hospital, 1-8-1 Inohana, Chuo-ku, Chiba City, Chiba Prefecture, 260-8670, Japan. .,Division of Laboratory Medicine, Chiba University Hospital, 1-8-1 Inohana, Chuo-ku, Chiba City, Chiba Prefecture, 260-8670, Japan.
| | - Marehiko Ueda
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba City, Chiba Prefecture, 260-8670, Japan
| | - Ryota Ebata
- Department of Pediatrics, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba City, Chiba Prefecture, 260-8670, Japan
| | - Emi Utsuno
- Division of Clinical Genetics, Chiba University Hospital, 1-8-1 Inohana, Chuo-ku, Chiba City, Chiba Prefecture, 260-8670, Japan
| | - Takuma Ishii
- Kawaguchi Kogyo General Hospital, 1-18-10, Sakae-cho, Kawaguchi, Saitama, 332-0017, Japan
| | - Kazuyuki Matsushita
- Division of Clinical Genetics, Chiba University Hospital, 1-8-1 Inohana, Chuo-ku, Chiba City, Chiba Prefecture, 260-8670, Japan.,Division of Laboratory Medicine, Chiba University Hospital, 1-8-1 Inohana, Chuo-ku, Chiba City, Chiba Prefecture, 260-8670, Japan
| | - Osamu Ohara
- Kazusa DNA Reaearch Institute, 2-6-7 Kazusa-kamatari, Kisarazu, Chiba, 292-0818, Japan
| | - Naoki Shimojo
- Department of Pediatrics, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba City, Chiba Prefecture, 260-8670, Japan
| | - Yoshio Kobayashi
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba City, Chiba Prefecture, 260-8670, Japan
| | - Fumio Nomura
- Division of Clinical Genetics, Chiba University Hospital, 1-8-1 Inohana, Chuo-ku, Chiba City, Chiba Prefecture, 260-8670, Japan.,Divisions of Clinical Mass Spectrometry and Clinical Genetics, Chiba University Hospital, 1-8-1 Inohana, Chuo-ku, Chiba City, Chiba Prefecture, 260-8670, Japan
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8
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Zeng J, Wang J, Zeng S, He M, Zeng X, Zhou Y, Liu Z, Jiang H, Tang B. Friedreich's Ataxia (FRDA) is an extremely rare cause of autosomal recessive ataxia in Chinese Han population. J Neurol Sci 2015; 351:124-126. [PMID: 25765228 DOI: 10.1016/j.jns.2015.03.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Accepted: 03/01/2015] [Indexed: 10/23/2022]
Abstract
Friedreich's Ataxia (FRDA) is a very common cause of hereditary autosomal recessive ataxia among western Europeans. We aim to define the frequency of FRDA in Chinese Han population due to the lack of reports of FRDA in China. The GAA trinucleotide repeats in the FXN gene were analyzed by triplet repeat-primed PCR (TP-PCR) in 122 unrelated hereditary ataxia (HA) and 114 unrelated hereditary spastic paraplegia (HSP) patients. The GAA copy numbers in the FXN gene of all the subjects ranged from 5 to 16. There were no FRDA patients that could be diagnosed base on the results of TP-PCR. It suggests that FRDA is a very rare cause of inheritance ataxia and FRDA genetic analysis should not be used as a routine genetic diagnosis test in China.
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Affiliation(s)
- Junsheng Zeng
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, PR China
| | - Junling Wang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, PR China; Key Laboratory of Hunan Province in Neurodegenerative Disorders, Changsha, Hunan, PR China; State Key Laboratory of Medical Genetics, Changsha, Hunan, PR China
| | - Sheng Zeng
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, PR China
| | - Miao He
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, PR China
| | - Xianfeng Zeng
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, PR China
| | - Yao Zhou
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, PR China
| | - Zhen Liu
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, PR China
| | - Hong Jiang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, PR China; Key Laboratory of Hunan Province in Neurodegenerative Disorders, Changsha, Hunan, PR China; State Key Laboratory of Medical Genetics, Changsha, Hunan, PR China
| | - Beisha Tang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, PR China; Key Laboratory of Hunan Province in Neurodegenerative Disorders, Changsha, Hunan, PR China; State Key Laboratory of Medical Genetics, Changsha, Hunan, PR China.
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9
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Jahanshahi-Anbuhi S, Pennings K, Leung V, Liu M, Carrasquilla C, Kannan B, Li Y, Pelton R, Brennan JD, Filipe CDM. Pullulan Encapsulation of Labile Biomolecules to Give Stable Bioassay Tablets. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201403222] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Jahanshahi-Anbuhi S, Pennings K, Leung V, Liu M, Carrasquilla C, Kannan B, Li Y, Pelton R, Brennan JD, Filipe CDM. Pullulan Encapsulation of Labile Biomolecules to Give Stable Bioassay Tablets. Angew Chem Int Ed Engl 2014; 53:6155-8. [PMID: 24764260 DOI: 10.1002/anie.201403222] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Indexed: 11/11/2022]
Affiliation(s)
- Sana Jahanshahi-Anbuhi
- Departments of Chemical Engineering, Chemistry & Chemical Biology, and Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, ON, L8S 4M1 (Canada)
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