98%
921
2 minutes
20
Beckwith-Wiedemann spectrum (BWSp) is a genomic imprinting disorder characterized by a wide range of clinical features. Here we report an infant with BWSp and atypical features, for whom long-read sequencing confirmed a de novo CDKN1C variant that occurred on the maternally inherited allele and excluded other genetic etiologies. These findings not only expand the BWSp concept but also highlight the potential value of allelic origin analysis in cases with atypical presentations.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC12120123 | PMC |
http://dx.doi.org/10.1038/s41439-025-00316-0 | DOI Listing |
Hum Genome Var
May 2025
Department of Genetics, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Japan.
Beckwith-Wiedemann spectrum (BWSp) is a genomic imprinting disorder characterized by a wide range of clinical features. Here we report an infant with BWSp and atypical features, for whom long-read sequencing confirmed a de novo CDKN1C variant that occurred on the maternally inherited allele and excluded other genetic etiologies. These findings not only expand the BWSp concept but also highlight the potential value of allelic origin analysis in cases with atypical presentations.
View Article and Find Full Text PDFJ Med Ultrasound
February 2024
Prenatal Diagnostic Center, Guangzhou Women and Children's Medical Centre, Guangzhou Medical University, Guangzhou, Guangdong, China.
Beckwith-Wiedemann syndrome (BWS) is an imprinting disorder caused by various genetic or epigenetic alterations involving growth regulatory genes located on chromosome 11p15.5 region. Conventionally, most cases of BWS are diagnosed during the neonatal period or early childhood.
View Article and Find Full Text PDFGenes (Basel)
October 2022
Department of Environmental Biological and Pharmaceutical Sciences and Technologies (DiSTABiF), Università degli Studi della Campania "Luigi Vanvitelli", 81100 Caserta, Italy.
Silver-Russell syndrome is an imprinting disorder characterised by pre- and post-natal growth retardation and several heterogeneous molecular defects affecting different human genomic loci. In the majority of cases, the molecular defect is the loss of methylation (LOM) of the differentially methylated region (DMR, also known as IC1) at the telomeric domain of the 11p15.5 imprinted genes cluster, which causes the altered expression of the growth controlling genes, and .
View Article and Find Full Text PDFJ Med Genet
December 2022
Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
Background: Two imprinting control centres, :IG-differentialy methylated region (DMR) and :TSS-DMR, reside on chromosome 11p15.5. Paternal deletions involving the :TSS-DMR result in variable phenotypes, namely, normal phenotype, Silver-Russel syndrome (SRS) and fetal demise.
View Article and Find Full Text PDF