NPM1 and acute myeloid leukemia: For NPM1, Ovcharenko et al. [28] report 13 out of 15 EM AML patients to harbor mutated NPM1 in a cohort of 89 patients with AML, Falini et al. [29] reported mutated NPM1 in 14% of 181 EM AML samples, and Döhner et al. [30] reported a correlation of mutated NPM1 and gingival hyperplasia.