U2AF2 and acute myeloid leukemia: The proteins frequently found in AML short loops include ATP-dependent RNA helicases (DDX3X, DDX17, DHX15, EIF4A1), splicing factors (U2AF2, PRPF8), heterogeneous nuclear ribonucleoproteins (HNRNPU, HNRNPK, HNRNPL, HNRNPF), paraspeckle protein (PSPC1) and ribosomal proteins (RPL6, RPS11, RPS16) (Supplementary Table S8).