- No immunomodulatory therapy (e.g., gold, auranofin, hydroxychloroquine, sulfasalazine, penicillamine, levamisole, dapsone, azathioprine, intravenous immunoglobulin, leukotriene antagonists, cromoglycate, ketotifen, nedocromil, psoralin-ultraviolet-light, or plasmapheresis) within 30 prior to the first dose of study drug or 5 half-lives of the action of the agent, whichever is longer