Relation between GATA2 expression and other residual disease markers. Consecutive GATA2, WT1, EVI1, and fusion gene expression at diagnosis and at different time points during treatment in pediatric AML patients with t(8;21) (A; n = 3) or high EVI1 expression (B; n = 3) determined by real-time quantitative PCR. Expression of GATA2 and WT1 relative to GAPDH is plotted. Expression of EVI1 and AML1-ETO relative to PBGD is plotted. For all of the different markers, expression at different time points during treatment was normalized to expression at diagnosis. CCR1 indicates continuous first CR.