ERBB4 exonic deletions on chromosome 2q34 in patients with intellectual disability or epilepsy

Hyder, Zerin, Van Paesschen, Wim, Sabir, Ataf, Sansbury, Francis H., Burke, Katherine B., Khan, Naz, Chandler, Kate E., Cooper, Nicola S., Wright, Ronnie, McHale, Edward, Van Esch, Hilde and Banka, Siddharth 2021. ERBB4 exonic deletions on chromosome 2q34 in patients with intellectual disability or epilepsy. European Journal of Human Genetics 29 , pp. 1377-1383. 10.1038/s41431-021-00815-y

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Abstract

ERBB4 encodes the tyrosine kinase receptor HER4, a critical regulator of normal cell function and neurodevelopmental processes in the brain. One of the key ligands of HER4 is neureglin-1 (NRG1), and the HER4-NRG1 signalling pathway is essential in neural crest cell migration, and neuronal differentiation. Pharmacological inactivation of HER4 has been shown to hasten the progression of epileptogenesis in rodent models, and heterozygous ERBB4 null mice are shown to have cognitive deficits and delayed motor development. Thus far there is only a single case report in the literature of a heterozygous ERBB4 deletion in a patient with intellectual disability (ID). We identified nine subjects from five unrelated families with chromosome 2q34 deletions, resulting in heterozygous intragenic loss of multiple exons of ERBB4, associated with either non-syndromic ID or generalised epilepsy. In one family, the deletion segregated with ID in five affected relatives. Overall, this case series further supports that haploinsufficiency of ERBB4 leads to non-syndromic intellectual disability or epilepsy.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Medicine
Additional Information:	This article is licensed under a Creative Commons Attribution 4.0 International License
Publisher:	Nature Publishing Group
ISSN:	1018-4813
Date of First Compliant Deposit:	5 March 2021
Date of Acceptance:	19 January 2021
Last Modified:	03 May 2023 22:52
URI:	https://orca.cardiff.ac.uk/id/eprint/139320

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