Clinical and aspartoacylase gene mutation analysis of Canavan disease in a child / 中华神经科杂志
Chinese Journal of Neurology
; (12): 493-497, 2019.
Article
in Zh
| WPRIM
| ID: wpr-756025
Responsible library:
WPRO
ABSTRACT
Objective To investigate the clinical and aspartoacylase (ASPA) gene mutation characteristics of Canavan disease.Methods The clinical data of a child with Canavan disease diagnosed by gene detection who visited Children's Hospital Affiliated to Zhengzhou University in June 2018 were reviewed and analyzed.Results A one year and five months old girl presented with psychomotor retrogression,hypermyotonia,and tendon hyperreflexia.The urinary N-acetylaspartic acid levels were significantly higher (66.832 7,more than 60 times that of normal individuals).Magnetic resonance imaging of the brain showed a multiple and symmetrical hyperintense signal changes in the cerebral white matter.Two heterozygous mutations c.79_80del (p.Gly27Arg) and c.554G>T (p.Gly185Val) were screened by targeted next generation sequencing.The results of Sanger sequencing showed the two mutations were compound heterozygous mutation derived from her father and mother,and the mutation c.554G>T has never been reported.Conclusions The next generation sequencing can accurately detect ASPA gene mutation as the first choice for the diagnosis of Canavan disease.The mutation c.554G>T enriches the gene mutation spectrum of Canavan disease.
Full text:
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Database:
WPRIM
Language:
Zh
Journal:
Chinese Journal of Neurology
Year:
2019
Document type:
Article