Chromosomal translocations involving PDGFRA/B have been associated with myeloid neoplasms characterized by prominent eosinophilia and responsiveness to imatinib.12, 13 At times, PDGFR-rearranged myeloid neoplasms can be associated with monocytosis and BM dysplasia, but given their unique responsiveness to imatinib, these are no longer classified as CMML. This evidence concerns the gene PDGFRA and myeloid neoplasm.