Among the 24 patients with SET-NUP214 fusion gene, 15 cases of acute lymphoblastic leukemia(ALL)(13 cases of T-ALL and 2 cases of B-ALL), 7 cases of acute myeloid leukemia(AML), and 2 cases of T/myeloid mixed acute leukemia have been identified. This evidence concerns the gene SET and acute lymphoblastic leukemia.