Su et al. (107) found that ropivacaine (10 μM), when combined with tumor necrosis factor α (TNFα), caused the inhibition of adhesion of three cancer cell lines, human hepatoma HepG2 cells, human colon cancer HT-29 cells and human leukemic monocyte THP-1 cells. This evidence concerns the gene TNF and malignant colon neoplasm.