P760: “Double-hit” RUNX1 involving a novel t(6;21)(q25;q22) chromosome translocation with RUNX1::ARID1B gene rearrangement and RUNX1 p.Trp279* truncation in acute myeloid leukemia - Rolando Garcia; Jing Xu; Lan Yu; Carter Wright; Franklin Fuda; Sharon Germans; Olga Weinberg; Weina Chen; Prasad Koduru (Genetics in Medicine Open)