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De Novo Mutations in EBF3 Cause a Neurodevelopmental Syndrome

Lookup NU author(s): Professor Rita HorvathORCiD

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Abstract

Early B cell factor 3 (EBF3) is an atypical transcription factor that is thought to influence the laminar formation of the cerebral cortex. Here, we report that de novo mutations in EBF3 cause a complex neurodevelopmental syndrome. The mutations were identified in two large-scale sequencing projects: the UK Deciphering Developmental Disorders (DDD) study and the Canadian Clinical Assessment of the Utility of Sequencing and Evaluation as a Service (CAUSES) study. The core phenotype includes moderate to severe intellectual disability, and many individuals exhibit cerebellar ataxia, subtle facial dysmorphism, strabismus, and vesicoureteric reflux, suggesting that EBF3 has a widespread developmental role. Pathogenic de novo variants identified in EBF3 include multiple loss-of-function and missense mutations. Structural modeling suggested that the missense mutations affect DNA binding. Functional analysis of mutant proteins with missense substitutions revealed reduced transcriptional activities and abilities to form heterodimers with wild-type EBF3. We conclude that EBF3, a transcription factor previously unknown to be associated with human disease, is important for brain and other organ development and warrants further investigation.


Publication metadata

Author(s): Sleven H, Welsh SJ, Yu J, Churchill MEA, Wright CF, Henderson A, Horvath R, Rankin J, Vogt J, Magee A, McConnell V, Green A, King MD, Cox H, Armstrong L, Lehman A, Nelson TN, Deciphering Development Disorders Study, CAUSES Study, Williams J, Clouston P, Hagman J, Nemeth AH

Publication type: Article

Publication status: Published

Journal: American Journal of Human Genetics

Year: 2017

Volume: 100

Issue: 1

Pages: 138-150

Print publication date: 05/01/2017

Online publication date: 23/12/2016

Acceptance date: 22/11/2016

ISSN (print): 0002-9297

ISSN (electronic): 1537-6605

Publisher: Cell Press

URL: http://dx.doi.org/10.1016/j.ajhg.2016.11.020

DOI: 10.1016/j.ajhg.2016.11.020


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Funding

Funder referenceFunder name
Department of Health
Genome British Columbia
National Jewish Health Flow Cytometry Core
RP Fighting Blindness
Action Medical Research
British Columbia Children's Hospital Foundation
Fight for Sight
Henry Smith Charity
Mining for Miracles
National Institute for Health Research through the Comprehensive Clinical Research Network
Victor W. Bolie and Earleen D. Bolie Graduate Scholarship Fund
Wellcome Trust
Wendy Siegel Fund for Leukemia and Cancer Research
HICF-1009-003Health Innovation Challenge Fund
WT098051Wellcome Trust Sanger Institute

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