In particular, patient #11944 expressed CD2, CD7 and TdT in 94%, 82% and 26% of cells, respectively, while patient #11945 was also positive for CD3 cytoplasmatic expression, TdT and MPO, with a diagnosis of T/myeloid mixed phenotype acute leukemia (T/M MPAL). The gene discussed is DNTT; the disease is mixed phenotype acute leukemia.