The combination of whole-exome sequencing and copy number variation sequencing enables the diagnosis of rare neurological disorders.
Clin Genet
; 96(2): 140-150, 2019 08.
Article
em En
| MEDLINE
| ID: mdl-30945278
ABSTRACT
This retrospective study aims to investigate the diagnostic yields of multiple strategies of next-generation sequencing (NGS) for children with rare neurological disorders (NDs). A total of 220 pediatric patients with NDs who visited our hospital between Jan 2017 and Dec 2018 and had undergone NGS were included. Most patients were 5 years old or younger, and the number of patients visiting the hospital decreased with age. Seizures were the most common symptom in this cohort. The positive rates for targeted NGS panels (Panel), whole-exome sequencing (WES), and copy number variation sequencing (CNVseq) were 26.5% (9/34), 36.6% (63/172), and 16.7% (22/132), respectively. The positive rate for patients undergoing a combination of WES and CNVseq (WES + CNVseq) was 47.8% (54/113), which was significantly better than the positive rate for patients who underwent WES alone (32.7%, 37/113). A total of 83 variants were found in 42 genes, and SCN1A was the most frequently mutanted gene. Twenty-four CNVs were identified in 22 patients two CNVs were inherited from the mother; 12 CNVs were de novo; and the CNV origins could not be determined in 10 patients. WES + CNVseq may potentially be the mostly effective NGS approach for diagnosis of rare NDs in pediatric patients.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Variações do Número de Cópias de DNA
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Sequenciamento do Exoma
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Doenças do Sistema Nervoso
Tipo de estudo:
Diagnostic_studies
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Observational_studies
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Prognostic_studies
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Risk_factors_studies
Limite:
Child, preschool
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Female
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Humans
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Infant
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Male
Idioma:
En
Ano de publicação:
2019
Tipo de documento:
Article