Like THP1 macrophages, normal peripheral blood monocytes restored the MMP and prevented activation of caspase 8 and cleavage of PARP in TRAIL-treated tumor cells (data not shown, Figure S2), which is consistent with the ability of colon cancer cells to induce IL-1β release from peripheral blood monocytes [7]. The gene discussed is IL1B; the disease is malignant colon neoplasm.