GFI1 and myeloproliferative disorder: Recently it has been shown that reduced expression of GFI1 in blast cells of myeloproliferative neoplasm (MPN), chronic myeloid leukemia (CML) and acute myeloid leukemia (AML) patients are associated with an inferior prognosis and event-free survival (Hock et al., 2004; Khandanpour et al., 2012; Fraszczak et al., 2019).