Clinical Focus ›› 2021, Vol. 36 ›› Issue (9): 820-823.doi: 10.3969/j.issn.1004-583X.2021.09.011

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Genetic diagnosis strategy in children with intellectual disability/global developmental delay

Zhou Youfeng1, Huang Yan1, Liu Guanghua2()   

  1. 1. Department of Pediatrics, Fujian Provincial Maternity and Children' Hospital, the Affiliated Hospital of Fujian Medical University, Fuzhou 350001, China
    2. Department of Clinical Medicine, Fujian Medical University, Department of Pediatrics, Fujian Provincial Maternity and Children' Hospital, Fuzhou 350001, China
  • Received:2021-05-07 Online:2021-09-20 Published:2021-10-05
  • Contact: Liu Guanghua E-mail:3477573@qq.com

Abstract:

Objective To explore the diagnostic strategy of genetics in children with unexplained intellectual disability/global developmental delay(ID/GDD). Methods The peripheral blood samples of 65 children with ID/GDD were collected and sequenced with CNV-seq. The negative samples were detected with trio-WES. The characteristics of clinical phenotype between CNVs positive group and SNV positive group were compared. The samples were divided into single detection group (CNV-seq) and combined detection group (CNV-seq combined with trio-WES), and the statistical significance of positive rate between two groups was compared. Results There was significant difference in positive rate between combined test group and single test group, 44.6%(29/65) vs 33.8%(22/65), respectively. Conclusion The combined detection of CNV-seq and trio-WES may increase the positive rate.

Key words: developmental disabilities, chromatin, polymorphism, single nucleotide, exomes

CLC Number: