- Subjects who are taking concomitant immunomodulatory agents including, but not limited to, interferons, interleukins, systemic steroids, cyclosporine, tacrolimus, calcineurin inhibitors, chronic low-dose methotrexate, or azathioprine. (The use of inhaled or intranasal steroids or oral steroids at a dose of ≤10 mg/day prednisone or its equivalent are permitted.)