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Research: Exome sequencing of fetuses with congenital diaphragmatic hernia supports a causal role for NR2F2, PTPN11, and WT1 variants

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Research: Exome sequencing of fetuses with congenital diaphragmatic hernia supports a causal role for NR2F2, PTPN11, and WT1 variants

Am J Surg

. 2021 Jul 20;S0002-9610(21)00396-2. doi: 10.1016/j.amjsurg.2021.07.016. Online ahead of print. https://pubmed.ncbi.nlm.nih.gov/34315577/

Exome sequencing of fetuses with congenital diaphragmatic hernia supports a causal role for NR2F2, PTPN11, and WT1 variants

Marisa E Schwab 1Shan Dong 2Billie R Lianoglou 3Alessandra F Aguilar Lucero 2Grace B Schwartz 2Mary E Norton 4Tippi C MacKenzie 1Stephan J Sanders 5Affiliations expand

Abstract

Background: To identify genes associated with congenital diaphragmatic hernia (CDH) to help understand the etiology and inform prognosis.

Methods: We performed exome sequencing on fetuses with CDH and their parents to identify rare genetic variants likely to mediate risk. We reviewed prenatal characteristics and neonatal outcomes.

Results: Data were generated for 22 parent-offspring trios. Six Likely Damaging (LD) variants were identified in five families (23 %). Three LD variants were in genes that contain variants in other CDH cohorts (NR2F2, PTPN11, WT1), while three were in genes that do not (CTR9, HDAC6, TP53). Integrating these data bolsters the evidence of association of NR2F2, PTPN11, and WT1 with CDH in humans. Of the five fetuses with a genetic diagnosis, one was terminated, two underwent perinatal demise, while two survived until repair.

Conclusions: Exome sequencing expands the diagnostic yield of genetic testing in CDH. Correlating CDH patients’ exomes with clinical outcomes may enable personalized counseling and therapies.

Keywords: Congenital diaphragmatic hernia; Exome sequencing; HDAC6; NR2F2; PTPN11; WT1.

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