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Definition

A form of myofibrillar myopathy, a group of chronic neuromuscular disorders characterized at ultrastructural level by disintegration of the sarcomeric Z disc and myofibrils, and replacement of the normal myofibrillar markings by small dense granules, or larger hyaline masses, or amorphous material. MFM7 is an autosomal recessive form, clinically characterized by early childhood onset of slowly progressive muscle weakness and mild atrophy primarily affecting the lower limbs, associated with joint contractures.

Acronym

MFM7

Keywords

Myofibrillar myopathy