RUNX1T1 and acute myeloid leukemia: RUNX1 is frequently involved in chromosomal translocations observed in acute leukaemias, such as ETV6‐RUNX1 in t(12;21) and RUNX1‐EVI1 in t(3;21),19 while the formation of the chimeric protein RUNX1‐CBF2T1 (AML1‐ETO) is associated with the M2 subtype of acute myeloid leukaemia (AML).20, 21