CD34 and chronic myelogenous leukemia, BCR-ABL1 positive: In summary, we found GAS2DN inhibited the CFC production of CML progenitor cells significantly (38±9 versus 21±5 colonies/1,000 input YFP+ cells, n = 7, p = 0.02; 250±50 versus 106±14 colonies/1,000 input CD34+YFP+ cells, n = 3, p = 0.05, Figure 5B).