Cargando…
Identification of a Novel CCM1 Frameshift Mutation in a Chinese Han Family With Multiple Cerebral Cavernous Malformations
Cerebral cavernous malformations (CCMs) are vascular lesions that predominantly occur in the brain. CCMs can be sporadic or hereditary in an autosomal dominant manner. The genes harboring variants of familial CCMs (FCCMs) include CCM1/KRIT1, CCM2/MGC4607, and CCM3/PDCD10. In this study, we identifie...
Autores principales: | , , , , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2020
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7538688/ https://www.ncbi.nlm.nih.gov/pubmed/33071727 http://dx.doi.org/10.3389/fnins.2020.525986 |
_version_ | 1783590918105858048 |
---|---|
author | Zhang, Fan Xue, Yiteng Zhang, Feng Wei, Xiaoming Zhou, Zhisong Ma, Zhaoru Wang, Xiaosong Shen, Hong Li, Yujun Cui, Xiaoying Liu, Li |
author_facet | Zhang, Fan Xue, Yiteng Zhang, Feng Wei, Xiaoming Zhou, Zhisong Ma, Zhaoru Wang, Xiaosong Shen, Hong Li, Yujun Cui, Xiaoying Liu, Li |
author_sort | Zhang, Fan |
collection | PubMed |
description | Cerebral cavernous malformations (CCMs) are vascular lesions that predominantly occur in the brain. CCMs can be sporadic or hereditary in an autosomal dominant manner. The genes harboring variants of familial CCMs (FCCMs) include CCM1/KRIT1, CCM2/MGC4607, and CCM3/PDCD10. In this study, we identified a novel CCM1/KRIT1 mutation in a Chinese family with FCCMs. This family consists of 20 members, and 6 of them had been diagnosed with CCMs. The proband patient is a 17-year-old female who has suffered from CCM-related intracranial hemorrhage four times. Magnetic resonance imaging (MRI) revealed four lesions in the different brain regions and one lesion has progressively enlarged. The pathological histology confirmed CCMs. Whole exome sequencing revealed a novel deletion mutation (c.1635delA) within exon 15 of CCM1/KRIT1 gene in the proband patient, her mother, and her uncle who had CCMs. This frameshift mutation led to a premature termination codon (PTC) at nucleotides 1652–1654. We also detected that the CCM1 mRNA levels in the blood lymphocytes of the family members with CCMs were reduced by 46.4% compared to that in healthy controls. Collectively, our results suggested that the CCM1 mutation could potentially be a causative factor for FCCMs in the Chinese family and the reduction of CCM1 mRNA expression in the blood lymphocytes of the patients might be a potential biomarker for the diagnosis and prognosis of CCMs. Our findings expanded the spectrum of CCM mutations and helped to guide genetic counseling and early genetic diagnosis for at-risk family members. |
format | Online Article Text |
id | pubmed-7538688 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-75386882020-10-15 Identification of a Novel CCM1 Frameshift Mutation in a Chinese Han Family With Multiple Cerebral Cavernous Malformations Zhang, Fan Xue, Yiteng Zhang, Feng Wei, Xiaoming Zhou, Zhisong Ma, Zhaoru Wang, Xiaosong Shen, Hong Li, Yujun Cui, Xiaoying Liu, Li Front Neurosci Neuroscience Cerebral cavernous malformations (CCMs) are vascular lesions that predominantly occur in the brain. CCMs can be sporadic or hereditary in an autosomal dominant manner. The genes harboring variants of familial CCMs (FCCMs) include CCM1/KRIT1, CCM2/MGC4607, and CCM3/PDCD10. In this study, we identified a novel CCM1/KRIT1 mutation in a Chinese family with FCCMs. This family consists of 20 members, and 6 of them had been diagnosed with CCMs. The proband patient is a 17-year-old female who has suffered from CCM-related intracranial hemorrhage four times. Magnetic resonance imaging (MRI) revealed four lesions in the different brain regions and one lesion has progressively enlarged. The pathological histology confirmed CCMs. Whole exome sequencing revealed a novel deletion mutation (c.1635delA) within exon 15 of CCM1/KRIT1 gene in the proband patient, her mother, and her uncle who had CCMs. This frameshift mutation led to a premature termination codon (PTC) at nucleotides 1652–1654. We also detected that the CCM1 mRNA levels in the blood lymphocytes of the family members with CCMs were reduced by 46.4% compared to that in healthy controls. Collectively, our results suggested that the CCM1 mutation could potentially be a causative factor for FCCMs in the Chinese family and the reduction of CCM1 mRNA expression in the blood lymphocytes of the patients might be a potential biomarker for the diagnosis and prognosis of CCMs. Our findings expanded the spectrum of CCM mutations and helped to guide genetic counseling and early genetic diagnosis for at-risk family members. Frontiers Media S.A. 2020-09-23 /pmc/articles/PMC7538688/ /pubmed/33071727 http://dx.doi.org/10.3389/fnins.2020.525986 Text en Copyright © 2020 Zhang, Xue, Zhang, Wei, Zhou, Ma, Wang, Shen, Li, Cui and Liu. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Neuroscience Zhang, Fan Xue, Yiteng Zhang, Feng Wei, Xiaoming Zhou, Zhisong Ma, Zhaoru Wang, Xiaosong Shen, Hong Li, Yujun Cui, Xiaoying Liu, Li Identification of a Novel CCM1 Frameshift Mutation in a Chinese Han Family With Multiple Cerebral Cavernous Malformations |
title | Identification of a Novel CCM1 Frameshift Mutation in a Chinese Han Family With Multiple Cerebral Cavernous Malformations |
title_full | Identification of a Novel CCM1 Frameshift Mutation in a Chinese Han Family With Multiple Cerebral Cavernous Malformations |
title_fullStr | Identification of a Novel CCM1 Frameshift Mutation in a Chinese Han Family With Multiple Cerebral Cavernous Malformations |
title_full_unstemmed | Identification of a Novel CCM1 Frameshift Mutation in a Chinese Han Family With Multiple Cerebral Cavernous Malformations |
title_short | Identification of a Novel CCM1 Frameshift Mutation in a Chinese Han Family With Multiple Cerebral Cavernous Malformations |
title_sort | identification of a novel ccm1 frameshift mutation in a chinese han family with multiple cerebral cavernous malformations |
topic | Neuroscience |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7538688/ https://www.ncbi.nlm.nih.gov/pubmed/33071727 http://dx.doi.org/10.3389/fnins.2020.525986 |
work_keys_str_mv | AT zhangfan identificationofanovelccm1frameshiftmutationinachinesehanfamilywithmultiplecerebralcavernousmalformations AT xueyiteng identificationofanovelccm1frameshiftmutationinachinesehanfamilywithmultiplecerebralcavernousmalformations AT zhangfeng identificationofanovelccm1frameshiftmutationinachinesehanfamilywithmultiplecerebralcavernousmalformations AT weixiaoming identificationofanovelccm1frameshiftmutationinachinesehanfamilywithmultiplecerebralcavernousmalformations AT zhouzhisong identificationofanovelccm1frameshiftmutationinachinesehanfamilywithmultiplecerebralcavernousmalformations AT mazhaoru identificationofanovelccm1frameshiftmutationinachinesehanfamilywithmultiplecerebralcavernousmalformations AT wangxiaosong identificationofanovelccm1frameshiftmutationinachinesehanfamilywithmultiplecerebralcavernousmalformations AT shenhong identificationofanovelccm1frameshiftmutationinachinesehanfamilywithmultiplecerebralcavernousmalformations AT liyujun identificationofanovelccm1frameshiftmutationinachinesehanfamilywithmultiplecerebralcavernousmalformations AT cuixiaoying identificationofanovelccm1frameshiftmutationinachinesehanfamilywithmultiplecerebralcavernousmalformations AT liuli identificationofanovelccm1frameshiftmutationinachinesehanfamilywithmultiplecerebralcavernousmalformations |