We used SW982 cells, a human synovial sarcoma cell line characterized by the expression of inflammation enzymes such as cyclooxygenase-2 (COX-2), inducible nitric oxide synthetase (iNOS), matrix metalloproteases (MMPs), and other mediators such as IL-6, IL-8, and tumor necrosis factor-alpha (TNF-α), in response to IL-1β. Here, TNF is linked to synovial sarcoma.