In recent publications, Sanchez et al demonstrated a higher engraftment rate (37% with ≥ 10% leukemia cells infiltrating marrow, plus 14% ≥ 1% infiltrating leukemia cells) after intravenous injection of samples from patients presenting with AML into a IL2R NOD/SCID mice model [15]. This evidence concerns the gene IL2RA and acute myeloid leukemia.