The oncogenic events occurred from 1.3 to 14.8 years after GT and were associated predominantly with insertional activation of the proto-oncogenes LIM domain only 2 (LMO2) for T-cell acute lymphoid leukemia or MECOM for myelodysplasia/myeloid leukemia7–14. This evidence concerns the gene LMO2 and Myelodysplasia.