Identification of rare variants in novel candidate genes in pulmonary atresia patients by next generation sequencing

Computational and Structural Biotechnology Journal
Xin ShiKun Sun

Abstract

Pulmonary atresia (PA) is a rare congenital heart defect (CHD) with complex manifestations and a high mortality rate. Since the genetic determinants in the pathogenesis of PA remain elusive, a thorough identification of the genetic factors through whole exome sequencing (WES) will provide novel insights into underlying mechanisms of PA. We performed WES data from PA/VSD (n = 60), PA/IVS (n = 20), TOF/PA (n = 20) and 100 healthy controls. Rare variants and novel genes were identified using variant-based association and gene-based burden analysis. Then we explored the expression pattern of our candidate genes in endothelium cell lines, pulmonary artery tissues, and embryonic hearts. 56 rare damage variants of 7 novel candidate genes (DNAH10, DST, FAT1, HMCN1, HNRNPC, TEP1, and TYK2) were certified to have function in PA pathogenesis for the first time. In our research, the genetic pattern among PA/VSD, PA/IVS and TOF/PA were different to some degree. Taken together, our findings contribute new insights into the molecular basis of this rare congenital birth defect.

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Citations

Aug 2, 2020·Biochimica Et Biophysica Acta. Molecular Basis of Disease·Shuzhang LiangRuilin Zhang

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Datasets Mentioned

BETA
GSE30428

Methods Mentioned

BETA
exome sequencing
exome
PCR
electrophoresis
transgenic

Software Mentioned

Search Tool for the Retrieval
samtools
SIFT
PolyPhen
1000G
gnomAD
mem
Genome Analysis Toolkit ( GATK )
ANNOVAR
MutationTaster

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