- Use of specific immunosuppressants or immunomodulatory agents including but not limited to tacrolimus, sirolimus, rapamycin, mycophenolate, cyclosporine, tumor necrosis factor (TNF)-alpha blockers or antagonists, azathioprine, interferon, growth factors, or intravenous immunoglobulin (IVIG) in the 30 days prior to study entry. NOTE: Use of oral prednisone less than or equal to 10 mg/day is allowed.