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Choufani, S; Cytrynbaum, C; Chung, B H Y; Turinsky, A L; Grafodatskaya, D; Chen, Y A; Cohen, A S A; Dupuis, L; Butcher, D T; Siu, M T; Luk, H M; Lo, I F M; Lam, S T S; Caluseriu, O; Stavropoulos, D J; Reardon, W; Mendoza-Londono, R; Brudno, M; Gibson, W T; Chitayat, D; Weksberg, R
Nature communications, 12/2015, Letnik: 6, Številka: 1Journal Article
Sotos syndrome (SS) represents an important human model system for the study of epigenetic regulation; it is an overgrowth/intellectual disability syndrome caused by mutations in a histone methyltransferase, NSD1. As layered epigenetic modifications are often interdependent, we propose that pathogenic NSD1 mutations have a genome-wide impact on the most stable epigenetic mark, DNA methylation (DNAm). By interrogating DNAm in SS patients, we identify a genome-wide, highly significant NSD1(+/-)-specific signature that differentiates pathogenic NSD1 mutations from controls, benign NSD1 variants and the clinically overlapping Weaver syndrome. Validation studies of independent cohorts of SS and controls assigned 100% of these samples correctly. This highly specific and sensitive NSD1(+/-) signature encompasses genes that function in cellular morphogenesis and neuronal differentiation, reflecting cardinal features of the SS phenotype. The identification of SS-specific genome-wide DNAm alterations will facilitate both the elucidation of the molecular pathophysiology of SS and the development of improved diagnostic testing.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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