Article
Hypomethylation is restricted to the D4Z4 repeat array in phenotypic FSHD.
Neurology - 4 Sept 2007
de Greef J C, Wohlgemuth M, Chan O A, Hansson K B, Smeets D, Frants R R, Weemaes C M, Padberg G W, van der Maarel S M
Abstract excerpt
BACKGROUND: Patients with facioscapulohumeral muscular dystrophy (FSHD) show a contraction of the D4Z4 repeat array in the subtelomere of chromosome 4q. This D4Z4 contraction is associated with significant allele-specific hypomethylation of the repeat. Hypomethylation of D4Z4 is also observed in patients with phenotypic FSHD without contraction of D4Z4 and in patients with the immunodeficiency, centromeric...
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