Skeletal myopathies due to MYH7 mutations were initially classified in two main subgroups according to clinical and pathological findings: myosin storage myopathy (MSM, MIM 608358) and Laing distal myopathy (LDM, MIM 160500). Here, MYH7 is linked to congenital myopathy 7A, myosin storage, autosomal dominant.