| umls-concept:C1512554 | skos:definition | NCI: Hypermethylation appears to be a controlled, epigenetic, heritable, and aberrant DNA methylation reaction on gene promoter regions and CpG islands associated with loss of (e.g., tumor-suppressor) gene function in diverse cellular pathways through transcriptional silencing by the formation of transcriptionally repressive chromatin. | lld:umls |
