FGF2 and acute myeloid leukemia: In unstimulated conditions, AML blasts exhibited the highest median concentrations of G-CSF, GM-CSF, b-FGF, and VEGF, which reached 454.9 pg/mL, 2.7 pg/mL, 40.0 pg/mL, and 240.1 pg/mL, respectively (Table 1, Figure 2).