In AML, RGA, APL with PML-RARA positive cases were 10 out of 20 cases, AML with (8;21) RUNX1-RUNX1T1 were 7/20 cases; there were two cases of AML with mutated NPM1 gene and one case of AML with biallelic mutation of CEBPA. This evidence concerns the gene RARA and acute promyelocytic leukemia.