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Novel Frameshift Heterozygous Mutation in UBAP1 Gene Causing Spastic Paraplegia-80: Case Report With Literature Review

Hereditary spastic paraplegia (HSP) represents a group of rare inherited neurodegenerative conditions and is characterized by progressive lower limb spasticity. Ubiquitin-associated protein 1 (UBAP1)-related HSP is classified as spastic paraplegia-80 (SPG80), which is an autosomal-dominant (AD) juve...

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Autores principales: Zhang, Chao, Zhu, Xiaowei, Zhu, Zeyu, Ni, Ruilong, Liu, Taotao, Zheng, Haoran, Liu, Shihua, Cao, Li, Zhong, Ping, Tian, Wotu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8936171/
https://www.ncbi.nlm.nih.gov/pubmed/35321509
http://dx.doi.org/10.3389/fneur.2022.820202
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author Zhang, Chao
Zhu, Xiaowei
Zhu, Zeyu
Ni, Ruilong
Liu, Taotao
Zheng, Haoran
Liu, Shihua
Cao, Li
Zhong, Ping
Tian, Wotu
author_facet Zhang, Chao
Zhu, Xiaowei
Zhu, Zeyu
Ni, Ruilong
Liu, Taotao
Zheng, Haoran
Liu, Shihua
Cao, Li
Zhong, Ping
Tian, Wotu
author_sort Zhang, Chao
collection PubMed
description Hereditary spastic paraplegia (HSP) represents a group of rare inherited neurodegenerative conditions and is characterized by progressive lower limb spasticity. Ubiquitin-associated protein 1 (UBAP1)-related HSP is classified as spastic paraplegia-80 (SPG80), which is an autosomal-dominant (AD) juvenile-onset neurologic disorder and mainly affects the lower limbs. We described the clinical and genetic features of two patients in the same family caused by heterozygous mutation of the UBAP1 gene. The proband was a 34-year-old woman with progressive spasticity and hyperreflexia in the lower limbs for 26 years. Her mother also had similar symptoms since the age of 6. The proband and her mother only had motor dysfunctions, such as unsteady gait, hypertonia, and hyperreflexia of lower limbs. Other system functions (sensory, urinary, visual, and cognitive impairments) were not involved. WES disclosed a frameshift mutation (c.371dupT) in the UBAP1 gene, which was predicted to be “likely pathogenic” and was co-segregated in the pedigree. c.371dupT, encoding the truncated UBAP1 protein with 72.6% missing of the normal amino acid sequence, is responsible for the spastic paraplegia (SPG) in this family. In combination with clinical characteristics, genetic testing results, and co-segregation analysis, the diagnosis is considered to be pure spastic paraplegia-80 (SPG80), which is an AD disease. By retrospectively analyzing the documented cases, we comprehensively review the phenotypic features and summarize the genotype spectrum of SPG80 to enhance earlier recognition and therapeutic strategies.
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spelling pubmed-89361712022-03-22 Novel Frameshift Heterozygous Mutation in UBAP1 Gene Causing Spastic Paraplegia-80: Case Report With Literature Review Zhang, Chao Zhu, Xiaowei Zhu, Zeyu Ni, Ruilong Liu, Taotao Zheng, Haoran Liu, Shihua Cao, Li Zhong, Ping Tian, Wotu Front Neurol Neurology Hereditary spastic paraplegia (HSP) represents a group of rare inherited neurodegenerative conditions and is characterized by progressive lower limb spasticity. Ubiquitin-associated protein 1 (UBAP1)-related HSP is classified as spastic paraplegia-80 (SPG80), which is an autosomal-dominant (AD) juvenile-onset neurologic disorder and mainly affects the lower limbs. We described the clinical and genetic features of two patients in the same family caused by heterozygous mutation of the UBAP1 gene. The proband was a 34-year-old woman with progressive spasticity and hyperreflexia in the lower limbs for 26 years. Her mother also had similar symptoms since the age of 6. The proband and her mother only had motor dysfunctions, such as unsteady gait, hypertonia, and hyperreflexia of lower limbs. Other system functions (sensory, urinary, visual, and cognitive impairments) were not involved. WES disclosed a frameshift mutation (c.371dupT) in the UBAP1 gene, which was predicted to be “likely pathogenic” and was co-segregated in the pedigree. c.371dupT, encoding the truncated UBAP1 protein with 72.6% missing of the normal amino acid sequence, is responsible for the spastic paraplegia (SPG) in this family. In combination with clinical characteristics, genetic testing results, and co-segregation analysis, the diagnosis is considered to be pure spastic paraplegia-80 (SPG80), which is an AD disease. By retrospectively analyzing the documented cases, we comprehensively review the phenotypic features and summarize the genotype spectrum of SPG80 to enhance earlier recognition and therapeutic strategies. Frontiers Media S.A. 2022-03-07 /pmc/articles/PMC8936171/ /pubmed/35321509 http://dx.doi.org/10.3389/fneur.2022.820202 Text en Copyright © 2022 Zhang, Zhu, Zhu, Ni, Liu, Zheng, Liu, Cao, Zhong and Tian. https://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 Neurology
Zhang, Chao
Zhu, Xiaowei
Zhu, Zeyu
Ni, Ruilong
Liu, Taotao
Zheng, Haoran
Liu, Shihua
Cao, Li
Zhong, Ping
Tian, Wotu
Novel Frameshift Heterozygous Mutation in UBAP1 Gene Causing Spastic Paraplegia-80: Case Report With Literature Review
title Novel Frameshift Heterozygous Mutation in UBAP1 Gene Causing Spastic Paraplegia-80: Case Report With Literature Review
title_full Novel Frameshift Heterozygous Mutation in UBAP1 Gene Causing Spastic Paraplegia-80: Case Report With Literature Review
title_fullStr Novel Frameshift Heterozygous Mutation in UBAP1 Gene Causing Spastic Paraplegia-80: Case Report With Literature Review
title_full_unstemmed Novel Frameshift Heterozygous Mutation in UBAP1 Gene Causing Spastic Paraplegia-80: Case Report With Literature Review
title_short Novel Frameshift Heterozygous Mutation in UBAP1 Gene Causing Spastic Paraplegia-80: Case Report With Literature Review
title_sort novel frameshift heterozygous mutation in ubap1 gene causing spastic paraplegia-80: case report with literature review
topic Neurology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8936171/
https://www.ncbi.nlm.nih.gov/pubmed/35321509
http://dx.doi.org/10.3389/fneur.2022.820202
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