BCR and chronic myelogenous leukemia, BCR-ABL1 positive: In a correspondence published in Blood, no118, 2011, a group of Italian authors analysed the frequency of the concomitant, double mutated phenotype JAK2V617F and BCR/ABL positive on a large cohort of 314 patients diagnosed with typical CML and found 8 cases of chronic phase CML patients who harboured both JAK2V617F mutation and BCR/ABL translocation [3,4].