In patients with MDS carrying SF3B1 mutations, the risk of AML transformation is less compared to those with WT SF3B1. In this study, Nr4a1 was found to be over-expressed in Sf3b1+/− mice compared to Sf3b1+/+ mice (FC = 2.29, P = 0.038) but Nr4a3 was not detected. This evidence concerns the gene NR4A1 and acute myeloid leukemia.