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Neuromuscul Disord. 1999 May;9(3):166-70.

Severe clinical expression in X-linked Emery-Dreifuss muscular dystrophy.

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  • 1Institute of Human Genetics, Ernst Moritz Arndt University of Greifswald, Germany.


X-linked Emery-Dreifuss muscular dystrophy (EDMD) is a relatively rare benign neuromuscular disorder which can vary remarkably in onset, course and severity. In the present study, a TCTAC deletion spanning the nucleotides 631-635 of the emerin gene caused an unusually severe disease phenotype including loss of ambulation and severe muscle wasting in two affected brothers. The same mutation has been reported previously in an unrelated family showing a significantly milder phenotype. The interfamilial heterogeneity in distribution and in severity of the features in the two families point to environmental or genetic modification as the cause of clinical variability in Emery-Dreifuss muscular dystrophy.

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