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Identification of a novel DNMT1 mutation in a Chinese patient with hereditary sensory and autonomic neuropathy type IE

BACKGROUND: DNA methyltransferase 1 (EC 2.1.1.37), encoded by DNMT1 gene, is one of key enzymes in maintaining DNA methylation patterns of the human genome. It plays a crucial role in embryonic development, imprinting and genome stability, cell differentiation. The dysfunction of this group of enzym...

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Autores principales: Zheng, Wenxia, Yan, Zhenxing, He, Rongni, Huang, Yaowei, Lin, Aiqun, Huang, Wei, Su, Yuying, Li, Shaoyuan, Zhang, Victor Wei, Xie, Huifang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6195733/
https://www.ncbi.nlm.nih.gov/pubmed/30342480
http://dx.doi.org/10.1186/s12883-018-1177-2
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author Zheng, Wenxia
Yan, Zhenxing
He, Rongni
Huang, Yaowei
Lin, Aiqun
Huang, Wei
Su, Yuying
Li, Shaoyuan
Zhang, Victor Wei
Xie, Huifang
author_facet Zheng, Wenxia
Yan, Zhenxing
He, Rongni
Huang, Yaowei
Lin, Aiqun
Huang, Wei
Su, Yuying
Li, Shaoyuan
Zhang, Victor Wei
Xie, Huifang
author_sort Zheng, Wenxia
collection PubMed
description BACKGROUND: DNA methyltransferase 1 (EC 2.1.1.37), encoded by DNMT1 gene, is one of key enzymes in maintaining DNA methylation patterns of the human genome. It plays a crucial role in embryonic development, imprinting and genome stability, cell differentiation. The dysfunction of this group of enzymes can lead to a variety of human genetic disorders. Until now, mutations in DNMT1 have been found to be associated with two distinct phenotypes. Mutations in exon 20 of this gene leads to hereditary sensory and autonomic neuropathy type IE, and mutations in exon 21 cause autosomal dominant cerebellar ataxia, deafness and narcolepsy. CASE PRESENTATION: Here we report a novel DNMT1 mutation in a sporadic case of a Chinese patient with cerebellar ataxia, multiple motor and sensory neuropathy, hearing loss and psychiatric manifestations. Furthermore, we elucidated its pathogenic effect through molecular genetics studies and revealed that this defective DNMT1 function is responsible for the phenotypes in this individual. CONCLUSION: Our findings expand the spectrum of DNMT1-related disorders and provide a good example of precision medicine through the combination of exome sequencing and clinical testing. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1186/s12883-018-1177-2) contains supplementary material, which is available to authorized users.
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spelling pubmed-61957332018-10-30 Identification of a novel DNMT1 mutation in a Chinese patient with hereditary sensory and autonomic neuropathy type IE Zheng, Wenxia Yan, Zhenxing He, Rongni Huang, Yaowei Lin, Aiqun Huang, Wei Su, Yuying Li, Shaoyuan Zhang, Victor Wei Xie, Huifang BMC Neurol Case Report BACKGROUND: DNA methyltransferase 1 (EC 2.1.1.37), encoded by DNMT1 gene, is one of key enzymes in maintaining DNA methylation patterns of the human genome. It plays a crucial role in embryonic development, imprinting and genome stability, cell differentiation. The dysfunction of this group of enzymes can lead to a variety of human genetic disorders. Until now, mutations in DNMT1 have been found to be associated with two distinct phenotypes. Mutations in exon 20 of this gene leads to hereditary sensory and autonomic neuropathy type IE, and mutations in exon 21 cause autosomal dominant cerebellar ataxia, deafness and narcolepsy. CASE PRESENTATION: Here we report a novel DNMT1 mutation in a sporadic case of a Chinese patient with cerebellar ataxia, multiple motor and sensory neuropathy, hearing loss and psychiatric manifestations. Furthermore, we elucidated its pathogenic effect through molecular genetics studies and revealed that this defective DNMT1 function is responsible for the phenotypes in this individual. CONCLUSION: Our findings expand the spectrum of DNMT1-related disorders and provide a good example of precision medicine through the combination of exome sequencing and clinical testing. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1186/s12883-018-1177-2) contains supplementary material, which is available to authorized users. BioMed Central 2018-10-20 /pmc/articles/PMC6195733/ /pubmed/30342480 http://dx.doi.org/10.1186/s12883-018-1177-2 Text en © The Author(s). 2018 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
spellingShingle Case Report
Zheng, Wenxia
Yan, Zhenxing
He, Rongni
Huang, Yaowei
Lin, Aiqun
Huang, Wei
Su, Yuying
Li, Shaoyuan
Zhang, Victor Wei
Xie, Huifang
Identification of a novel DNMT1 mutation in a Chinese patient with hereditary sensory and autonomic neuropathy type IE
title Identification of a novel DNMT1 mutation in a Chinese patient with hereditary sensory and autonomic neuropathy type IE
title_full Identification of a novel DNMT1 mutation in a Chinese patient with hereditary sensory and autonomic neuropathy type IE
title_fullStr Identification of a novel DNMT1 mutation in a Chinese patient with hereditary sensory and autonomic neuropathy type IE
title_full_unstemmed Identification of a novel DNMT1 mutation in a Chinese patient with hereditary sensory and autonomic neuropathy type IE
title_short Identification of a novel DNMT1 mutation in a Chinese patient with hereditary sensory and autonomic neuropathy type IE
title_sort identification of a novel dnmt1 mutation in a chinese patient with hereditary sensory and autonomic neuropathy type ie
topic Case Report
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6195733/
https://www.ncbi.nlm.nih.gov/pubmed/30342480
http://dx.doi.org/10.1186/s12883-018-1177-2
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