[Molecular mechanisms of myeloid malignancies].

Almost all genetic abnormalities involved in the occurrence and progression of myelodysplastic syndromes (MDS) and acute myeloid leukemia have been reported within the last decade. The molecular mechanisms of these genetic changes involved in causing dysfunctions in hematopoietic cells have also been clarified in recent years. For MDS, gene mutations of RNA splicing factors and cohesin complex have been shown to trigger not only aberrant RNA splicing or decreased chromatin insulation but also DNA damage response and transcriptional dysregulation through inefficient interaction between promoters and enhancers. Consequently, these newly identified disease-causing mechanisms may be considered potential therapeutic targets.