MLLT1 and leukemia: However, patients with rearrangements, mainly the common ones—KMT2A::MLLT3, KMT2A::MLLT10, KMT2A::AFDN (KMT2A::Mixed-Lineage Leukemia; Translocated To 4) and KMT2A::MLLT1 (KMT2A::Mixed-Lineage Leukemia; Translocated To 1), tended to have premature deaths, demonstrating a significant effect of the discussed abnormalities on OS, independent of therapy.