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Facioscapulohumeral muscular dystrophy (FSHD) is a type of muscular dystrophy, a group of heritable diseases that cause degeneration of muscle and progressive weakness. Per the name, FSHD tends to sequentially weaken the muscles of the face, those that position the scapula, and those overlying the humerus bone of the upper arm.
Other relatively common muscular dystrophies include Becker muscular dystrophy, facioscapulohumeral muscular dystrophy, and myotonic dystrophy, [1] whereas limb–girdle muscular dystrophy and congenital muscular dystrophy are themselves groups of several – usually extremely rare – genetic disorders.
Calpainopathy is the most common type of autosomal recessive limb-girdle muscular dystrophy (LGMD). [2] It preferentially affects the muscles of the hip girdle and shoulder girdle. No disease modifying pharmaceuticals have been developed as of 2019, although physical therapy, lifestyle modification, and orthopedic surgery can address symptoms.
Losmapimod (GW856553X) is an investigational drug that reached stage III clinical trials for multiple medical conditions, but did not prove efficacy. It was most recently in development by Fulcrum Therapeutics for the treatment of facioscapulohumeral muscular dystrophy (FSHD).
Dystrophinopathy refers to a spectrum of diseases due to mutations in the DMD gene, which encodes for the dystrophin protein found in muscle. [1] [2] [3] The severe end of the spectrum includes Duchenne muscular dystrophy (DMD), Becker muscular dystrophy (BMD), and DMD-associated dilated cardiomyopathy.
Distal myopathy is a group of rare genetic disorders that cause muscle damage and weakness, predominantly in the hands and/or feet. Mutation of many different genes can be causative. Mutation of many different genes can be causative.
Familial a – Familial i. Familial ALS; Familial ALS with dementia; Familial adenomatous polyposis; Familial amyloid polyneuropathy; Familial aortic dissection
Symptomatic treatment, which aims to relieve symptoms and improve quality of life is the main treatment method of Bethlem myopathy. It is believed that physical therapy, stretching exercises, orthoses such as braces and splints, and mobility aids like a walker or wheelchair are beneficial to patient's condition. [7]