LIMS2-related limb-girdle muscular dystrophy

A subtype of autosomal recessive limb girdle muscular dystrophy characterized by childhood onset of severe, progressive, proximal skeletal muscle weakness and atrophy of the upper and lower limbs with later involvement of distal muscles and development of severe quadraparesis, calf hypertrophy, triangular tongue, and dilated cardiomyopathy. Skeletal muscles undergo diffuse, bilateral, symmetric and severe atrophy with fat infiltration.