Journal article

A homozygous UBA5 pathogenic variant causes a fatal congenital neuropathy

Macarena Cabrera-Serrano, David Joseph Coote, Dimitar Azmanov, Hayley Goullee, Erik Andersen, Catriona McLean, Mark Davis, Ryosuke Ishimura, Zornitza Stark, Jean-Michel Vallat, Masaaki Komatsu, Andrew Kornberg, Monique Ryan, Nigel G Laing, Gina Ravenscroft

Journal of Medical Genetics | BMJ PUBLISHING GROUP | Published : 2020

Abstract

BACKGROUND: UBA5 is the activating enzyme of UFM1 in the ufmylation post-translational modification system. Different neurological phenotypes have been associated with UBA5 pathogenic variants including epilepsy, intellectual disability, movement disorders and ataxia. METHODS AND RESULTS: We describe a large multigenerational consanguineous family presenting with a severe congenital neuropathy causing early death in infancy. Whole exome sequencing and linkage analysis identified a novel homozygous UBA5 NM_024818.3 c.31C>T (p.Arg11Trp) mutation. Protein expression assays in mouse tissue showed similar levels of UBA5 in peripheral nerves to the central nervous system. CRISPR-Cas9 edited HEK (h..

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Grants

Awarded by ISCIII


Awarded by Junta de Andalucia-Consejeria de Salud


Awarded by NHMRC


Awarded by Japan Society for the Promotion of Science



Funding Acknowledgements

MC-S was supported by ISCIII (JR15/00042) and Junta de Andalucia-Consejeria de Salud (B-0005-2017). This work was supported by the NHMRC, grants to NGL and GR (APP1002147, APP1035955, APP1080587). MK is supported by a Grant-in-A id for Scientific Research on Innovative Areas (19H0506), a Grant-in-Aid for Scientific Research (B) (18H02611), the Japan Society for the Promotion of Science (an A3 foresight program) and the Takeda Science Foundation (to MK). RI is supported by a Grant-in-A id for Young Scientists (B) (18K15061).