qPCR methods can be used to monitor other molecular markers, such as FLT3-ITD and the overexpression of WT1, which are relatively common genetic abnormalities in AML: FLT3-ITD is present in 25% of adult AML cases [66], and nearly 75% of AML cases overexpress WT1 [67]. Here, FLT3 is linked to acute myeloid leukemia.