Clinical and imaging hallmarks of the MYH7-related myopathy with severe axial involvement

Ivana Dabaj, Robert Y Carlier, David Gómez-Andrés, Osório Abath Neto, Enrico Bertini, Adele D'amico, Fabiana Fattori, Yann PéRéon, Claudia Castiglioni, Eliana Rodillo, Michela Catteruccia, Júlio Brandão Guimarães, Acary Souza Bulle Oliveira, Umbertina Conti Reed, Lilia Mesrob, Doris Lechner, Anne Boland, Jean-François Deleuze, Edoardo Malfatti, Carsten BonnemannJocelyn Laporte, Norma Romero, Adrien Felter, Susana Quijano-Roy, Cristiane Araújo Martins Moreno, Edmar Zanoteli

Research output: Contribution to journalArticle

Abstract

INTRODUCTION: MYH7 gene mutations are related to a heterogeneous group of skeletal and cardiac myopathies.

METHODS: We evaluated clinical and muscle MRI changes in patients with mutations in the rod domain of MYH7, including 1 with mosaicism and 3 with novel missense mutations.

RESULTS: Patients presented in childhood with a distal and axial phenotype. Biopsy findings were variable. Half of the cases displaying some type of core pathology, including minicores and eccentric cores. Most patients demonstrated internal bands of infiltration ("inverted-collagen-VI sign") in multiple muscles, particularly the soleus, and prominent atrophy and fatty infiltration of the tongue and the paraspinal, gluteus minimus, sartorius, gracilis, tibialis anterior, and extensor digitorum longus muscles.

DISCUSSION: Muscle imaging findings in patients with axial involvement provide significant clues permitting the distinction between MYH7-related myopathies and other axial myopathies such as those related to SEPN1 and LMNA genes. Muscle Nerve 58: 224-234, 2018.

Original languageEnglish
Pages (from-to)224-234
Number of pages11
JournalMuscle and Nerve
Volume58
Issue number2
DOIs
Publication statusPublished - Aug 2018

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Dabaj, I., Carlier, R. Y., Gómez-Andrés, D., Neto, O. A., Bertini, E., D'amico, A., Fattori, F., PéRéon, Y., Castiglioni, C., Rodillo, E., Catteruccia, M., Guimarães, J. B., Oliveira, A. S. B., Reed, U. C., Mesrob, L., Lechner, D., Boland, A., Deleuze, J-F., Malfatti, E., ... Zanoteli, E. (2018). Clinical and imaging hallmarks of the MYH7-related myopathy with severe axial involvement. Muscle and Nerve, 58(2), 224-234. https://doi.org/10.1002/mus.26137