CNV profiles of Chinese pediatric patients with developmental disorders.
Genet Med
; 23(4): 669-678, 2021 04.
Article
em En
| MEDLINE
| ID: mdl-33402738
ABSTRACT
PURPOSE:
To examine the overall genomic copy-number variant (CNV) landscape of Chinese pediatric patients with developmental disorders.METHODS:
De-identified chromosomal microarray (CMA) data from 10,026 pediatric patients with developmental disorders were collected for re-evaluating the pathogenic CNV (pCNV) yields of different medical conditions and for comparing the frequency and phenotypic variability of genomic disorders between the Chinese and Western patient populations.RESULTS:
The overall yield of pCNVs in the Chinese pediatric patient cohort was 21.37%, with variable yields for different disorders. Yields of pCNVs were positively associated with phenotypic complexity and intellectual disability/developmental delay (ID/DD) comorbidity for most disorders. The genomic burden and pCNV yield in neurodevelopmental disorders supported a female protective effect. However, the stratification analysis revealed that it was seen only in nonsyndromic ID/DD, not in nonsyndromic autism spectrum disorders or seizure. Furthermore, 15 known genomic disorders showed significantly different frequencies in Chinese and Western patient cohorts, and profiles of referred clinical features for 15 known genomic disorders were also significantly different in the two cohorts.CONCLUSION:
We defined the pCNV yields and profiles of the Chinese pediatric patients with different medical conditions and uncovered differences in the frequency and phenotypic diversity of genomic disorders between Chinese and Western patients.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Deficiências do Desenvolvimento
/
Deficiência Intelectual
Tipo de estudo:
Prognostic_studies
Limite:
Child
/
Female
/
Humans
País/Região como assunto:
Asia
Idioma:
En
Revista:
Genet Med
Assunto da revista:
GENETICA MEDICA
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
China