miRNAs are important regulators of erythroid and megakaryocytic cells production.1,18 CFU-G, colony-forming unit-granulocyte; CFU-GM, colony-forming unit-granulocyte-macrophage; CFU-Eo, colony-forming unit-eosinophil; CFU-M, colony-forming unit-macrophage; CFU-Meg, colony-forming unit-megakaryocyte; MCP, mast cell progenitor. Up arrows represent upregulation of miRNAs or protein-coding genes. Down arrows represent the upregulation of miRNAs or protein-coding genes.