RT Journal Article T1 A complementary study approach unravels novel players in the pathoetiology of Hirschsprung disease. A1 Mederer, Tanja A1 Schmitteckert, Stefanie A1 Volz, Julia A1 Martinez, Cristina A1 Röth, Ralph A1 Thumberger, Thomas A1 Eckstein, Volker A1 Scheuerer, Jutta A1 Thöni, Cornelia A1 Lasitschka, Felix A1 Carstensen, Leonie A1 Günther, Patrick A1 Holland-Cunz, Stefan A1 Hofstra, Robert A1 Brosens, Erwin A1 Rosenfeld, Jill A A1 Schaaf, Christian P A1 Schriemer, Duco A1 Ceccherini, Isabella A1 Rusmini, Marta A1 Tilghman, Joseph A1 Luzón-Toro, Berta A1 Torroglosa, Ana A1 Borrego, Salud A1 Sze-Man Tang, Clara A1 Garcia-Barcelo, Merce A1 Tam, Paul A1 Paramasivam, Nagarajan A1 Bewerunge-Hudler, Melanie A1 De-La-Torre, Carolina A1 Gretz, Norbert A1 Rappold, Gudrun A A1 Romero, Philipp A1 Niesler, Beate K1 Cell Differentiation K1 Cell Line K1 Computer Simulation K1 Disease Models, Animal K1 Gene Expression Profiling K1 Hirschsprung Disease K1 Infant K1 Mice K1 Exome Sequencing AB Hirschsprung disease (HSCR, OMIM 142623) involves congenital intestinal obstruction caused by dysfunction of neural crest cells and their progeny during enteric nervous system (ENS) development. HSCR is a multifactorial disorder; pathogenetic variants accounting for disease phenotype are identified only in a minority of cases, and the identification of novel disease-relevant genes remains challenging. In order to identify and to validate a potential disease-causing relevance of novel HSCR candidate genes, we established a complementary study approach, combining whole exome sequencing (WES) with transcriptome analysis of murine embryonic ENS-related tissues, literature and database searches, in silico network analyses, and functional readouts using candidate gene-specific genome-edited cell clones. WES datasets of two patients with HSCR and their non-affected parents were analysed, and four novel HSCR candidate genes could be identified: ATP7A, SREBF1, ABCD1 and PIAS2. Further rare variants in these genes were identified in additional HSCR patients, suggesting disease relevance. Transcriptomics revealed that these genes are expressed in embryonic and fetal gastrointestinal tissues. Knockout of these genes in neuronal cells demonstrated impaired cell differentiation, proliferation and/or survival. Our approach identified and validated candidate HSCR genes and provided further insight into the underlying pathomechanisms of HSCR. PB Public Library of Science YR 2020 FD 2020-11-05 LK http://hdl.handle.net/10668/16550 UL http://hdl.handle.net/10668/16550 LA en NO Mederer T, Schmitteckert S, Volz J, Martínez C, Röth R, Thumberger T, et al. A complementary study approach unravels novel players in the pathoetiology of Hirschsprung disease. PLoS Genet. 2020 Nov 5;16(11):e1009106. DS RISalud RD Oct 24, 2025