KMT2A and acute leukemia: Recently, novel rearrangements in acute leukemias such as KMT2A::BTK with (X;11)(q22.1;q23.3), KMT2A::NUTM2A with t(10;11)(q22;q23.3), and also KMT2A::PRPF19 with inv(11)(q12.2;q23.3) were detected.