While the four tumors harbored integrations in Gfi1 and ecotropic viral-integration Site 5 (Evi5) (the Gfi1/Evi5 locus), tumor 359 contained six integrations at this locus, four of which were positioned in sense in the 3′-UTR of Gfi1 (Figure 1E). This evidence concerns the gene GFI1 and neoplasm.