Neurodegenerative Diseases
Clinical and CLB1 gene mutations analysis of GM1 gangliosidosis in a patient
Yang Zhigang, Wang Yuan, Chen Guohong, Mei Daoqi, Li Chunge, Wang Xiaona
Published 2019-10-08
Cite as Chin J Neurol, 2019, 52(10): 812-816. DOI: 10.3760/cma.j.issn.1006-7876.2019.10.004
Abstract
ObjectiveTo investigate the clinical and CLB1 gene mutation characteristics of GM1 gangliosidosis patient.
MethodsThe clinical data of one GM1 gangliosidosis patient from Children′s Hospital Affiliated to Zhengzhou University in March 2018 were reviewed and analyzed. The patient was diagnosed by gene detection and enzymatic activity.
ResultsThe patient is a 4 years and 1 month old boy, mainly presented psychomotor retrogression. His β-galactosidase activity was low (8.0 nmol·g -1·min-1). Two splice site mutations (c.458-2A(IVS4)>G and c.1068+5G(IVS10)>A) of patient′s CLB1 gene were screened by targeted next generation sequencing. The results of Sanger sequencing showed that the mutations are compound heterozygous and both are first reported. The mutation c.1068+5G(IVS10)>A was derived from patient′s mother, and the other one is de nove.
ConclusionGM1 gangliosidosis is a rare neurodegenerative disease, which could be accurately diagnosed by the next generation sequencing and enzyme assay.
Key words:
Gangliosidoses; G(M1) Ganglioside; beta-Galactosidase; Genes; Mutation
Contributor Information
Yang Zhigang
Department of Neurology, Children′s Hospital Affiliated to Zhengzhou University, Zhengzhou 450000, China
Wang Yuan
Chen Guohong
Mei Daoqi
Li Chunge
Wang Xiaona