A method of treating TNF-.alpha.-mediated disease in a human comprising administering to the human an effective TNF-inhibiting amount of an anti-TNF chimeric antibody, wherein said anti-TNF chimeric antibody competitively inhibits binding of TNF to monoclonal antibody cA2 and said disease is selected from the group consisting of systemic lupus erythematosus, thyroidosis, graft versus host disease, scleroderma, diabetes mellitus, Graves' disease, sarcoidosis, chronic inflammatory bowel disease, ulcerative colitis, disseminated intravascular coagulation, atherosclerosis and Kawasaki's pathology.