Inspired by the computational analyses indicating the presence of an IFN regulatory factor binding site, we evaluated the IFNγ-responsiveness of the novel promoter in the murine fibroblastic cell line NIH 3T3, the murine myeloma cells line MPC11, and the murine osteoblastic cell line MC3T3, respectively (Figure 6A). This evidence concerns the gene IFNA1 and plasma cell myeloma.