MPO indicates myeloperoxidase; MPN, myeloproliferative neoplasm; MDS, myelodysplastic syndrome; FLT3ITD, FLT3 internal tandem duplication; NPM1, nucleophosmin 1; BM, bone marrow; PB, peripheral blood; M, male; F, female; Prec, precursor; Gran, granulocyte; Eos, eosinophil; Eryth, erythrocyte; Monos, monocytes; Lymphs, lymphocytes; and Neg, negative.