1. FOSL2 truncating variants in the last exon cause a neurodevelopmental disorder with scalp and enamel defects
- Author
-
Auriane Cospain, Ana Rivera-Barahona, Erwan Dumontet, Blanca Gener, Isabelle Bailleul-Forestier, Isabelle Meyts, Guillaume Jouret, Bertrand Isidor, Carole Brewer, Wim Wuyts, Leen Moens, Selket Delafontaine, Wayne Wing Keung Lam, Kris Van Den Bogaert, Anneleen Boogaerts, Emmanuel Scalais, Thomas Besnard, Benjamin Cogne, Christophe Guissard, Paul Rollier, Wilfrid Carre, Regis Bouvet, Karin Tarte, Ricardo Gómez-Carmona, Pablo Lapunzina, Sylvie Odent, Marie Faoucher, Christele Dubourg, Víctor L. Ruiz-Pérez, Koen Devriendt, Laurent Pasquier, Luis A. Pérez-Jurado, Generalitat de Catalunya, CHU Pontchaillou [Rennes], Centre de référence Maladies Rares CLAD-Ouest [Rennes], Universidad Autónoma de Madrid (UAM), Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), Department of Microbiology, Immunology and Transplantation [Leuven], Catholic University of Leuven - Katholieke Universiteit Leuven (KU Leuven), University Hospitals Leuven [Leuven], Laboratoire National de Santé [Luxembourg] (LNS), Centre hospitalier universitaire de Nantes (CHU Nantes), Institut du Thorax [Nantes], Antwerp University Hospital [Edegem] (UZA), Centre Hospitalier de Luxembourg [Luxembourg] (CHL), Geroscience and rejuvenation research center (RESTORE), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-EFS-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Microenvironment and B-cells: Immunopathology,Cell Differentiation, and Cancer (MOBIDIC), Université de Rennes (UR)-Etablissement français du sang [Rennes] (EFS Bretagne)-Institut National de la Santé et de la Recherche Médicale (INSERM), Institut de Génétique et Développement de Rennes (IGDR), Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Universitat Pompeu Fabra [Barcelona] (UPF), and Research reported in this publication was supported by the CatalonianDepartment of Health (URDCAT: Grant SLT002/16/00174) and the ENoD Programme of CIBERER(ER16P08), Instituto de Salud Carlos III. Selket Delafontaine is supported by the personal FWO Grant11F4421N. Isabelle Meyts is a Senior Clinical Investigator at the Research Foundation – Flanders, andis supported by the CSL Behring Chair of Primary Immunodeficiencies, by the KU Leuven C1 GrantC16/18/007, by a VIB GC PID Grant, by the FWO Grants G0C8517N, G0B5120N and G0E8420N and bythe Jeffrey Modell Foundation. Part of this work was supported by a grant from the Spanish Ministryof Science and Innovation (PID2019-105620RB-I00/AEI/10.13039/501100011033). The project hasalso received funding from the European Research Council (ERC) under the European Union’s Horizon2020 research and innovation programme (grant agreement No. 948959). This work is supported byERN-RITA.LAPJ is founding partner and scientific advisor of qGenomics Laboratories. The remaining authorsdeclare no potential conflict of interest.
- Subjects
FOSL2 FRA-2 aplasia cutis congenita of scalp enamel hypoplasia AP-1 complex Adams-Oliver syndrome ,Autism Spectrum Disorder ,MESH: Fos-Related Antigen-2 ,FOSL2 ,Fos-Related Antigen-2 ,MESH: Scalp ,Adams-Oliver syndrome ,Ectodermal Dysplasia ,AP-1 complex ,Humans ,RNA, Messenger ,Genetics (clinical) ,FRA-2 ,MESH: Neurodevelopmental Disorders ,MESH: RNA, Messenger ,enamel hypoplasia ,MESH: Autism Spectrum Disorder ,MESH: Humans ,MESH: Ectodermal Dysplasia ,Scalp ,Exons ,MESH: Transcription Factor AP-1 ,Transcription Factor AP-1 ,aplasia cutis congenita of scalp ,HEK293 Cells ,[SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics ,Neurodevelopmental Disorders ,MESH: HEK293 Cells ,Human medicine ,MESH: Exons - Abstract
[Purpose]: We aimed to investigate the molecular basis of a novel recognizable neurodevelopmental syndrome with scalp and enamel anomalies caused by truncating variants in the last exon of the gene FOSL2, encoding a subunit of the AP-1 complex., [Methods]: Exome sequencing was used to identify genetic variants in all cases, recruited through Matchmaker exchange. Gene expression in blood was analyzed using reverse transcription polymerase chain reaction. In vitro coimmunoprecipitation and proteasome inhibition assays in transfected HEK293 cells were performed to explore protein and AP-1 complex stability., [Results]: We identified 11 individuals from 10 families with mostly de novo truncating FOSL2 variants sharing a strikingly similar phenotype characterized by prenatal growth retardation, localized cutis scalp aplasia with or without skull defects, neurodevelopmental delay with autism spectrum disorder, enamel hypoplasia, and congenital cataracts. Mutant FOSL2 messenger RNAs escaped nonsense-mediated messenger RNA decay. Truncated FOSL2 interacts with c-JUN, thus mutated AP-1 complexes could be formed., [Conclusion]: Truncating variants in the last exon of FOSL2 associate a distinct clinical phenotype by altering the regulatory degradation of the AP-1 complex. These findings reveal a new role for FOSL2 in human pathology., Research reported in this publication was supported by the Catalonian Department of Health (URDCAT).
- Published
- 2022
- Full Text
- View/download PDF