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Title: Identification of Gene Mutations in Primary Pediatric Cardiomyopathy by Whole Exome Sequencing
Authors: Kitiwan Rojnueangnit
Boonchu Sirichongkolthong
Ratthapon Wongwandee
Thanitchet Khetkham
Saisuda Noojarern
Arthaporn Khongkraparn
Duangrurdee Wattanasirichaigoon
Thammasat University Hospital
Faculty of Medicine, Ramathibodi Hospital, Mahidol University
Faculty of Medicine, Thammasat University
Keywords: Medicine
Issue Date: 1-Jan-2019
Citation: Pediatric Cardiology. (2019)
Abstract: © 2019, Springer Science+Business Media, LLC, part of Springer Nature. Pediatric primary cardiomyopathy is rare but serious, having high mortality; hypertrophic and dilated types are the most common. Its etiology has been mainly considered idiopathic; however, next generation sequencing techniques have revealed nearly half of idiopathic pediatric cases arose from specific genetic mutations. Therefore, our study aimed to identify the genetic causes of primary idiopathic cardiomyopathy. Newborns to 15-year old patients with this condition were recruited between March 2016 and May 2017 at Thammasat University Hospital. Complete patient history and physical examination data were collected by a geneticist with cardiac examinations and echocardiograms by pediatric cardiologists. Whole exome sequencing was performed for all. Of the 12 patients enrolled, 5 cases were dilated type and 7 hypertrophic. Two with dilated type were excluded during follow-up as cause was determined (hypocalcemia and pacemaker induced). A list of 118 genes for cardiomyopathy was analyzed in the remaining 10 cases. Pathogenic and likely pathogenic mutations were identified in 5 patients: HRAS, PTPN11, SOS1, FLNC and TXNRD2; half our patients were not actually idiopathic. Despite its high cost, genetic testing is useful for determining familial risk as well as predicting patient cardiomyopathy progress.
ISSN: 14321971
Appears in Collections:Scopus 2019

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