Intrafamilial variability of myoclonic dystonia in a large French family carrying a novel SGCE variant.

Abstract excerpt

Myoclonus-dystonia syndrome (MDS) is an autosomal dominant movement disorder most caused by pathogenic variants in SGCE, an imprinted gene subject to maternal silencing. While numerous pathogenic variants have been reported, the extent and determinants of intrafamilial variability remain incompletely understood. We investigated a large French family in which ten individuals across three generations presented with...

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