Diagnostic yield and treatment impact of whole-genome sequencing in paediatric neurological disorders.

Abstract:

AIM:To investigate the diagnostic yield and treatment impact of whole-genome sequencing (WGS) in patients with paediatric neurological disorders. METHOD:From January 2016 to December 2019, paediatric patients who had suspected genetic neurological disorders were assessed using WGS. The phenotypes of eligible patients were divided into four groups: patients with neurodevelopmental disorders; patients with epilepsy; patients with neuromuscular disorders; and patients with movement disorders. RESULTS:A total of 214 consecutive patients (128 males, 86 females) underwent WGS. The mean (SD) age of disease onset was 13.8 (27.6) months (range 1d-15y 5mo). The mean (SD) age at which WGS was performed was 71.7 (58.9) months (range 8d-18y). A molecular diagnosis was reported in 43.9% of patients. The highest diagnostic rate was achieved in 62.5% of patients with neuromuscular disorders, 47.5% of patients with epilepsy, 41.1% of patients with neurodevelopment disorders, and 15.4% of patients with movement disorders. All 94 patients with a WGS diagnosis were given access to genetic counselling and 23.4% of patients had immediate changes in treatment strategies after undergoing WGS. INTERPRETATION:WGS allows paediatric neurologists to integrate genomic data into their diagnosis and adjust management strategies for a range of clinical and genetically heterogeneous disease entities to improve the clinical outcomes of patients. In our cohort, the diagnosis of a significant proportion of patients was reached through WGS (43.9%). Clinicians could use these results to directly guide the management of their patients and improve their clinical outcomes (23.4%).

journal_name

Dev Med Child Neurol

authors

Lee HF,Chi CS,Tsai CR

doi

10.1111/dmcn.14722

subject

Has Abstract

pub_date

2020-11-26 00:00:00

eissn

0012-1622

issn

1469-8749

pub_type

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