To check this hypothesis, we launched the truncating mutation in a GFI1B expression vector and performed transcriptional repression assays using the Gfi1 promoter as a validated Gfi1B target.25 Good lack of an intact DNA-binding zinc finger, we observed that GFI1BTr didn’t repress the Gfi1 promoter, whereas the nonmutant GFI1 and GFI1B did . When coexpressed, GFI1BTr inhibited repression mediated by non-mutant GFI1B, indicating that the mutant inhibits non-mutant GFI1B in a dominant-negative fashion . To validate that GFI1BTr adversely affects normal GFI1B, we expressed GFI1BTr in mouse bone marrow cells and induced megakaryocytic differentiation. GFI1BTr-positive megakaryocytes had several dysplastic features, including hypolobulation of the nuclei, irregular contours, and multiple separated nuclei; these features weren’t observed in control cells .Awareness of these ponatinib-associated events is critical in the treatment of patients who are getting ponatinib. In this study, arterial thrombotic events were observed predominantly in sufferers with either a documented ischemic condition or a number of risk elements at baseline. Patients with these clinical features should be carefully monitored. More data are needed to determine the cardiovascular risk due to ponatinib and the mechanism of actions underlying these events.It is necessary to research whether interventions also, such as the use of aspirin or other medicines that inhibit platelet aggregation, may decrease the threat of these events.