As expected, VER155008 also repressed the expression of CD45, CD19, and CD20 more strongly than bortezomib (Fig. 7b), thus indicating that the transcriptional regulatory activity and oncorepressor activity of mutant Blimp-1 proteins were much better restored by the HSP70 inhibitor than the proteasome inhibitor in lymphoma cells growing in vivo. This evidence concerns the gene PRDM1 and lymphoma.