In both univariate and multivariable analyses, high NPM1 VAF had a particularly adverse prognostic effect in the subset of patients treated with stem-cell transplantation in first remission and in patients with mutated DNMT3A, indicating the prognostic effect of NPM1 mutation in de novo AML may be influenced by the relative abundance of the mutated allele [11]. This evidence concerns the gene NPM1 and acute myeloid leukemia.