These results are in line with recent studies in human biological context reporting that MafB expression is considerably up-regulated in tumor-associated macrophages (TAM) that exhibit a M2-like functional profile8 and that MafB is required for efficient induction of M2 marker genes, including MRC1 and CD163, in human monocytes in response to IL-10 stimulation9. Here, CD163 is linked to neoplasm.