Rinsho Shinkeigaku (Clinical Neurology)

Case Report

A case of Emery-Dreifuss muscular dystrophy with slight joint contracture

Shintaro Fujii, M.D.1), Katsuki Eguchi, M.D.1), Chika Sato, M.D.1), Yoshihiko Saito, M.D.2), Luh Ari Indrawati, M.D.2), Shinichi Shirai, M.D., Ph.D.1), Ichizo Nishino, M.D., Ph.D.2) and Ichiro Yabe, M.D., Ph.D.1)

1) Department of Neurology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University
2) Department of Neurology, National Center of Neurology and Psychiatry

A 42-year-old man with a history of two previous coronary embolisms was referred to our hospital. He had been experiencing muscle weakness since he was around 40 years old. He had muscle atrophy of the scapula, upper arm, and lower extremities, and electromyography revealed myogenic changes in the limb muscles. Histopathological analysis of the muscle biopsy specimen revealed a complete deficiency of emerin protein, and genetic examination revealed a mutation in the emerin (EMD) gene, resulting in a diagnosis of Emery-Dreifuss muscular dystrophy (EDMD). EDMD is a muscular disorder with three symptoms: joint contracture at early onset, muscle weakness and atrophy, and cardiac dysfunction. Although this patient showed no obvious joint contracture, the course and clinical symptoms vary among patients. Therefore, in patients in whom clinical diagnosis is difficult, muscle biopsy and genetic testing should be performed for EDMD in order to prevent sudden death due to this disease.
Full Text of this Article in Japanese PDF (7617K)

(CLINICA NEUROL, 60: 554|559, 2020)
key words: Emery-Dreifuss muscular dystrophy, joint contracture, muscle weakness, cardiac dysfunction, genetic counseling

(Received: 11-Feb-20)