Pie chart depicting the molecular heterogeneity of CN-AML. The analysis is based on mutations in the NPM1, CEBPA, MLL, and FLT3 (ITD and tyrosine kinase domain [TKD] mutations at codons D835 and I836), NRAS, and WT1 genes. Data are derived from mutational analysis of 485 younger adult patients with CN-AML from the German AML Study Group.90