IDH1 and acute myeloid leukemia: In addition, we observed a trend for higher STAB1 mRNA expression in Fms Related Receptor Tyrosine Kinase 3 (FLT3) and/or Nucleophosmin 1 (NPM1) mutated AML compared to the other most frequent mutations (Isocitrate Dehyrogenase 1/2 (IDH1/2), RUNX1, Serine/arginine rich splicing factor 2 (SRSF2)) in the tested samples (Fig. 2C).