Abstract
Beckwith-Wiedemann syndrome (BWS) is an overgrowth syndrome, which, in 50-60% of sporadic cases, is caused by hypomethylation of KCNQ1OT1 differentially methylated region (DMR) at chromosome 11p15.5. The underlying defect of this hypomethylation is largely unknown. Recently, recessive mutations of the ZFP57 gene were reported in patients with transient neonatal diabetes mellitus type 1, showing hypomethylation at multiple imprinted loci, including KCNQ1OT1 DMR in some. The aim of our study was to determine whether ZFP57 alterations were a genetic cause of the hypomethylation at KCNQ1OT1 DMR in patients with BWS. We sequenced ZFP57 in 27 BWS probands and in 23 available mothers to test for a maternal effect. We identified three novel, presumably benign sequence variants in ZFP57; thus, we found no evidence for ZFP57 alterations as a major cause in sporadic BWS cases.
| Original language | English |
|---|---|
| Journal | European Journal of Human Genetics |
| Volume | 20 |
| Issue number | 1 |
| Pages (from-to) | 119-21 |
| Number of pages | 3 |
| ISSN | 1018-4813 |
| DOIs | |
| Publication status | Published - Jan 2012 |
Keywords
- Beckwith-Wiedemann Syndrome
- Chromosomes, Human, Pair 11
- DNA Methylation
- DNA Mutational Analysis
- DNA-Binding Proteins
- Female
- Genetic Testing
- Humans
- Inheritance Patterns
- Male
- Mutation
- Transcription Factors
