TET2 and chronic myelomonocytic leukemia: In CMML patients, dysplastic signs of one or more BM myeloid cells were observed, along with the presence of clonal genetic abnormalities (the most frequent mutations were ASXL1: n = 6/13 patients, SRSF2: n = 7/13 patients, and TET2: n = 9/13 patients) (Table 3).