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Reanalysis of Genomic Sequencing Results in a Clinical Laboratory: Advantages and Limitations

Authors
 Dongju Won  ;  Se Hee Kim  ;  Borahm Kim  ;  Seung-Tae Lee  ;  Hoon-Chul Kang  ;  Jong Rak Choi 
Citation
 FRONTIERS IN NEUROLOGY, Vol.11 : 612, 2020-06 
Journal Title
 FRONTIERS IN NEUROLOGY 
Issue Date
2020-06
Keywords
clinical laboratories ; epileptic encephalopathy ; neurodevelopmental disorder ; next-generation sequencing ; reanalysis
Abstract
Genetic diagnosis of patients with neurodevelopmental disorders is imperative and a standard clinical practice. Considering the continuous accumulation of data on disease-causing variants, reanalysis of previously established sequencing data is important. Periodic reanalysis of variants with uncertain significance has become mandatory in clinical laboratories. Therefore, to confirm the utility of the reanalysis of targeted gene panel data in clinical laboratories, we re-evaluated the data of two groups of patients who had undergone targeted gene panel testing for neurodevelopmental disorders (n = 116) and epileptic encephalopathy (n = 384). This reanalysis was based on a reannotation process reflecting updated databases. Six (5.2%) and seven (1.8%) new pathogenic or likely pathogenic variants were identified in these two groups, respectively, attributable to the updated guidelines and de novo reports from unrelated patients. Although relatively low, considerable increase in the diagnostic yield was confirmed. We suggest that reanalysis of genetic variants, mainly using changes in databases and updated interpretations, should be implemented as a routine practice in clinical laboratories.
Files in This Item:
T202002748.pdf Download
DOI
10.3389/fneur.2020.00612
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Laboratory Medicine (진단검사의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Pediatrics (소아청소년과학교실) > 1. Journal Papers
Yonsei Authors
Kang, Hoon Chul(강훈철) ORCID logo https://orcid.org/0000-0002-3659-8847
Kim, Borahm(김보람) ORCID logo https://orcid.org/0000-0003-0923-7744
Kim, Se Hee(김세희) ORCID logo https://orcid.org/0000-0001-7773-1942
Won, Dongju(원동주) ORCID logo https://orcid.org/0000-0002-0084-0216
Lee, Seung-Tae(이승태) ORCID logo https://orcid.org/0000-0003-1047-1415
Choi, Jong Rak(최종락) ORCID logo https://orcid.org/0000-0002-0608-2989
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/179351
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