Scapuloperoneal syndrome encompasses a heterogeneous group of neuromuscular disorders all characterized by slowly progressive weakness in the shoulder-girdle and peroneal muscles. Both neurogenic and myopathic scapuloperoneal syndromes exist, the latter being referred to as scapuloperoneal myopathy (SPM). Distinct subtypes of SPM are caused by mutations in the sarcomeric muscle proteins desmin and myosin heavy chain 7. The X-linked dominant form of SPM (XSPM) is caused by mutations in the FHL1 gene.
Four and a half LIM protein 1 gene mutations cause four distinct human myopathies: a comprehensive review of the clinical, histological and pathological features.
