The increase in specific types of cytochrome enzyme also appears to be unique to each type of leukemia as shown by others, such as specific induction of CYP1A1 in AML with t(8;21) [22] as well as CYP2E1 and NQO1 in AML with inv(16) [5,16]. This evidence concerns the gene CYP1A1 and acute myeloid leukemia.