Research: Common variants increase risk for congenital diaphragmatic hernia within the context of de novo variants

Am J Hum Genet

. 2024 Sep 24:S0002-9297(24)00334-3.

 doi: 10.1016/j.ajhg.2024.08.024. Online ahead of print. https://pubmed.ncbi.nlm.nih.gov/39332409/

Common variants increase risk for congenital diaphragmatic hernia within the context of de novo variants

Lu Qiao 1Carrie L Welch 2Rebecca Hernan 3Julia Wynn 2Usha S Krishnan 2Jill M Zalieckas 4Terry Buchmiller 5Julie Khlevner 2Aliva De 2Christiana Farkouh-Karoleski 2Amy J Wagner 6Andreas Heydweiller 7Andreas C Mueller 8Annelies de Klein 9Brad W Warner 10Carlo Maj 11Dai Chung 12David J McCulley 13David Schindel 14Douglas Potoka 15Elizabeth Fialkowski 16Felicitas Schulz 17Florian Kipfmuller 8Foong-Yen Lim 18Frank Magielsen 9George B Mychaliska 19Gudrun Aspelund 2Heiko Martin Reutter 20Howard Needelman 21J Marco Schnater 22Jason C Fisher 23Kenneth Azarow 16Mahmoud Elfiky 24Markus M Nöthen 25Melissa E Danko 12Mindy Li 26Przemyslaw Kosiński 27Rene M H Wijnen 22Robert A Cusick 21Samuel Z Soffer 28Suzan C M Cochius-Den Otter 29Thomas Schaible 30Timothy Crombleholme 14Vincent P Duron 31Patricia K Donahoe 32Xin Sun 13Frances A High 33Charlotte Bendixen 7Erwin Brosens 9Yufeng Shen 34Wendy K Chung 35

Affiliations Expand

Abstract

Congenital diaphragmatic hernia (CDH) is a severe congenital anomaly often accompanied by other structural anomalies and/or neurobehavioral manifestations. Rare de novo protein-coding variants and copy-number variations contribute to CDH in the population. However, most individuals with CDH remain genetically undiagnosed. Here, we perform integrated de novo and common-variant analyses using 1,469 CDH individuals, including 1,064 child-parent trios and 6,133 ancestry-matched, unaffected controls for the genome-wide association study. We identify candidate CDH variants in 15 genes, including eight novel genes, through deleterious de novo variants. We further identify two genomic loci contributing to CDH risk through common variants with similar effect sizes among Europeans and Latinx. Both loci are in putative transcriptional regulatory regions of developmental patterning genes. Estimated heritability in common variants is ∼19%. Strikingly, there is no significant difference in estimated polygenic risk scores between isolated and complex CDH or between individuals harboring deleterious de novo variants and individuals without these variants. The data support a polygenic model as part of the CDH genetic architecture.

Keywords: WNT5A; common variants; congenital diaphragmatic hernia; de novo variants; genome-wide association study; single-nucleotide polymorphism.

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