Myotonic dystrophy (DM) is the most common adult muscular dystrophy, characterized by autosomal dominant progressive myopathy, myotonia, and multiorgan involvement. To date, two distinct forms caused by similar mutations in two different genes have been identified: myotonic dystrophy type 1 (DM1) and myotonic dystrophy type 2 (DM2). Aberrant transcription and mRNA processing of multiple genes due to RNA-mediated toxic gain-of function has been suggested to cause the complex phenotype in DM1 and DM2. However, despite clinical and genetic similarities, DM1 and DM2 may be considered as distinct disorders. This review is an update on the latest findings specific to DM2, including explanations for the differences in clinical manifestations and pathophysiology between the two forms of myotonic dystrophies.

Myotonic dystrophy type 2 and modifier genes : an update on clinical and pathomolecular aspects / G. Meola, R. Cardani. - In: NEUROLOGICAL SCIENCES. - ISSN 1590-1874. - 38:4(2017 Apr), pp. 535-546.

Myotonic dystrophy type 2 and modifier genes : an update on clinical and pathomolecular aspects

G. Meola
Primo
;
R. Cardani
Ultimo
2017

Abstract

Myotonic dystrophy (DM) is the most common adult muscular dystrophy, characterized by autosomal dominant progressive myopathy, myotonia, and multiorgan involvement. To date, two distinct forms caused by similar mutations in two different genes have been identified: myotonic dystrophy type 1 (DM1) and myotonic dystrophy type 2 (DM2). Aberrant transcription and mRNA processing of multiple genes due to RNA-mediated toxic gain-of function has been suggested to cause the complex phenotype in DM1 and DM2. However, despite clinical and genetic similarities, DM1 and DM2 may be considered as distinct disorders. This review is an update on the latest findings specific to DM2, including explanations for the differences in clinical manifestations and pathophysiology between the two forms of myotonic dystrophies.
Microsatellite expansion; Modifier genes; Myotonic dystrophy type 2; Spliceopathy; 2708; Neurology (clinical); Psychiatry and Mental Health
Settore MED/26 - Neurologia
apr-2017
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/474098
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