Journal article

Genetic variation affecting DNA methylation and the human imprinting disorder, Beckwith-Wiedemann syndrome

Vinod Dagar, Wendy Hutchison, Andrea Muscat, Anita Krishnan, David Hoke, Ashley Buckle, Priscillia Siswara, David J Amor, Jeffrey Mann, Jason Pinner, Alison Colley, Meredith Wilson, Rani Sachdev, George McGillivray, Matthew Edwards, Edwin Kirk, Felicity Collins, Kristi Jones, Juliet Taylor, Ian Hayes Show all

CLINICAL EPIGENETICS | BMC | Published : 2018

Abstract

BACKGROUND: Beckwith-Wiedemann syndrome (BWS) is an imprinting disorder with a population frequency of approximately 1 in 10,000. The most common epigenetic defect in BWS is a loss of methylation (LOM) at the 11p15.5 imprinting centre, KCNQ1OT1 TSS-DMR, and affects 50% of cases. We hypothesised that genetic factors linked to folate metabolism may play a role in BWS predisposition via effects on methylation maintenance at KCNQ1OT1 TSS-DMR. RESULTS: Single nucleotide variants (SNVs) in the folate pathway affecting methylenetetrahydrofolate reductase (MTHFR), methionine synthase reductase (MTRR), 5-methyltetrahydrofolate-homocysteine S-methyltransferase (MTR), cystathionine beta-synthase (CBS) ..

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