Concomitant occurrence of BCR-ABL and JAK2V617F mutation

To the editor: In a recent issue of the journal, Makishima et al[1][1] reported on the occurrence of mutations typically associated with Philadelphia-chromosome (Ph1) negative myeloproliferative (MPN)/ myelodysplastic neoplasms in 54 patients with typical chronic myelogenous leukemia (CML) in