EDMD is characterized by myopathic changes in certain skeletal muscles and early contractures at the neck, elbows, and Achilles tendons, as well as cardiac conduction defects. 'Classic' Emery-Dreifuss muscular dystrophy (EDMD1; 310300) is an X-linked disorder caused by mutation in the emerin gene (EMD; 300384) on Xq28 (Emery, 1989).
For a discussion of genetic heterogeneity of EDMD, see 310300. [from
OMIM]