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Muscular dystrophies are caused by mutations in genes, usually those involved in making muscle proteins. [2] The muscle protein, dystrophin, is in most muscle cells and works to strengthen the muscle fibers and protect them from injury as muscles contract and relax. [3] It links the muscle membrane to the thin muscular filaments within the cell.
DM1 is the most common form of myotonic muscular dystrophy diagnosed in children, with a prevalence ranging from 1 per 100,000 in Japan to 3–15 per 100,000 in Europe. [13] The prevalence may be as high as 1 in 500 in regions such as Quebec, possibly due to the founder effect. The incidence of congenital myotonic dystrophy is thought to be ...
Congenital muscular dystrophies (CMDs) are autosomal recessively inherited, except in some cases of de novo gene mutation and Ullrich congenital muscular dystrophy. [8] [9] This means that in most cases, both parents must be carriers of a CMD gene in order for it to be inherited. CMDs are heterogenous and thus far there have been 35 genes ...
Limb girdle muscular dystrophies (LGMD) as defined by the European Neuromuscular Centre in 2018. [1] [2] They are named by the following system: LGMD, recessive or dominant inheritance (R or D), order of discovery (number), affected protein.
Emery–Dreifuss muscular dystrophy (EDMD) is a type of muscular dystrophy, a group of heritable diseases that cause progressive impairment of muscles. EDMD affects muscles used for movement (skeletal muscles), causing atrophy, weakness and contractures. It almost always affects the heart, causing abnormal rhythms, heart failure, or sudden ...
Muscular dystrophies, including Duchenne's and Becker's, are a large group of diseases, many of them hereditary or resulting from genetic mutations, where the muscle integrity is disrupted, they lead to progressive loss of strength and decreased life span. [17] Further causes of neuromuscular diseases are: Polymyositis. Inflammatory muscle ...
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.
Classic distal muscular dystrophies Type Eponym Inheritance OMIM Gene Locus Gene also implicated in: Late adult-onset type 1 [4] Welander AD [5] 604454: TIA1 [6] 2p13 [7] Late adult-onset type 2a [5] - Finnish (tibial) Udd AD [5] 600334: TTN [5] 2q31.2 Late adult-onset type 2b [5] Markesbery–Griggs AD [8] ZASP [5] 10q23.2 Early adult-onset ...