HDAC1 and chronic myelogenous leukemia, BCR-ABL1 positive: Here FC decreased histone deacetylase 1 (HDAC1) and HDAC2, and induced acetylation of H3K9, H3K18, and H4K8 in K562 and KBM5 cells, implying the critical role of HDAC inhibition in FC induced apoptosis in CML cells.