... [20]. In the current study, no NPM1 mutations were detected in cases with secondary AML followingMDS, which is in line with previous s tudies associatingabsence or low rates of NPM1 mutations in ... assess the incidence andprognostic relevance of NPM1 mutations in childhood AML. NPM1 mutations w ere found in patients with denovo AML M1 and M2 subtypes. No mutations wereobserved in patients ... F: Frequency of FLT3 mutations in childhood acute lymphoblastic leukemia. Med Oncol 2009, 26:460-462.16. Thiede C, Creutzig E, Reinhardt D, Ehninger G, Creutzig U: Different types of NPM1 mutations...