Abstract:Type I myotonic dystrophy or Steinert's disease (DM1, OMIM 160900), is an autosomal dominant mulsystem disease of variable expresión caused by a (CTG) n , expansion mutation in the gene encoding for the myotonic dystrophy protein kinase (DMPK) in 19q13. The disease is characterized by a phenomenon of anticipation, resulting in a more severe expression of the disease in successive generations, in correlation with the size of the triplet expansion. The congenital form of the disease, ussually of maternal transmi… Show more
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