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CLINICAL AND IMAGING HALLMARKS OF THE MYH7-RELATED MYOPATHY WITH SEVERE AXIAL INVOLVEMENT
Journal article   Peer reviewed

CLINICAL AND IMAGING HALLMARKS OF THE MYH7-RELATED MYOPATHY WITH SEVERE AXIAL INVOLVEMENT

Ivana Dabaj, Robert Y. Carlier, David Gomez-Andres, Osorio Abath Neto, Enrico Bertini, Adele D'Amico, Fabiana Fattori, Yann Pereon, Claudia Castiglioni, Eliana Rodillo, …
Muscle & nerve, Vol.58(2), pp.224-234
08/01/2018
DOI: 10.1002/mus.26137
PMID: 29624713

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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.
Clinical Neurology Life Sciences & Biomedicine Neurosciences Neurosciences & Neurology Science & Technology

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