NPM1 and Myelodysplasia: Conversely, UBTF-TD was mutually exclusive with NPM1 mutations, CEBPA in-frame bZIP mutations, TP53 mutations, adverse cytogenetics and recurrent fusion transcripts and less frequently associated with myelodysplasia-related mutations [20] than UBTF-wt (9% vs. 29%, q-value = 0.003).