“…This discordance in IL-2R alpha expression between normal cells, which we wish to retain that do not express the receptor, and abnormal cells in disease that express the receptor provided the scientific basis for the use of anti-Tac and its humanized form, daclizumab, for an array of clinical conditions including CD25-expressing leukemias and lymphomas, autoimmune diseases and to prevent allograft rejection. In 1997 daclizumab, the humanized form of this antibody was approved by the FDA for use in the prevention of renal allograft rejection (Vincenti et al, 1998;Wiseman and Faulds, 1999). In addition, we and our collaborators demonstrated that daclizumab is of value in the treatment of patients with non-infectious uveitis, multiple sclerosis and the neurological disease, human T-cell lymphotropic virus I (HTLV-I)-associated myelopathy (HAM)/TSP (Lehky et al, 1998;Nussenblatt et al, 1999;Bielekova et al, 2004).…”