RT-PCR with all four primer combinations, MORF-1234F/KANSL1–2969R1, MORF-1234F/ KANSL1–2900R1, MORF-1261F/KANSL1–2969R1, and MORF-1261F/KANSL1–2900R1, amplified cDNA fragments strongly suggesting the presence of a KAT6B-KANSL1 fusion transcript in the examined tumor (Fig. 4A, lanes 1–4). The gene discussed is KAT6B; the disease is neoplasm.