BCP‐ALL subtypes include high‐hyperdiploidy (HeH), t(12;21)ETV6::RUNX1, t(1;19)E2A::PBX1, t(9;22)BCR::ABL1, dic(9::20), iAMP21, hypodiploidy (<45 chr), and KMT2A (also known as MLL1) rearrangements, amongst others.24 Here, KMT2A is linked to acute lymphoblastic leukemia.