Recessive mutations in muscle-specific isoforms of FXR1 cause congenital multi-minicore myopathy

Other authors

Institut Català de la Salut

[Estañ MC] Instituto de Investigaciones Biomédicas "Alberto Sols", Madrid, Spain. CIBER de Enfermedades Raras (CIBERER), Madrid, Spain. [Fernández-Núñez E] Instituto de Investigaciones Biomédicas "Alberto Sols", Madrid, Spain. [Zaki MS] Department of Clinical Genetics, Human Genetics and Genome Research Division, Centre of Excellence of Human Genetics, National Research Centre, Cairo, Egypt. [Esteban MI] Departamento de Anatomía Patológica, Hospital Universitario La Paz-IdiPaz-UAM, Madrid, Spain. [Donkervoort S] Neuromuscular and Neurogenetic Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA. [Hawkins C] Division of Pathology, Department of Paediatric Laboratory Medicine, The Hospital for Sick Children, University of Toronto, Toronto, Canada. [Tizzano EF] CIBER de Enfermedades Raras (CIBERER), Madrid, Spain. Hospital Universitari Vall d'Hebron, Barcelona, Spain.

Vall d'Hebron Barcelona Hospital Campus

Publication date

2019-03-22T12:57:11Z

2019-03-22T12:57:11Z

2019-02-15



Abstract

FXR1; Mutations; Myopathy


FXR1; Mutacions; Miopatia


FXR1; Mutaciones; Miopatía


FXR1 is an alternatively spliced gene that encodes RNA binding proteins (FXR1P) involved in muscle development. In contrast to other tissues, cardiac and skeletal muscle express two FXR1P isoforms that incorporate an additional exon-15. We report that recessive mutations in this particular exon of FXR1 cause congenital multi-minicore myopathy in humans and mice. Additionally, we show that while Myf5-dependent depletion of all FXR1P isoforms is neonatal lethal, mice carrying mutations in exon-15 display non-lethal myopathies which vary in severity depending on the specific effect of each mutation on the protein.

Document Type

Article


Published version

Language

English

Publisher

Nature Research

Related items

Nature Communications;10(1)

https://www.nature.com/articles/s41467-019-08548-9

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Rights

Attribution-NonCommercial-NoDerivatives 4.0 International

http://creativecommons.org/licenses/by-nc-nd/4.0/

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