- Patients with active disease despite steroid therapy (prednisone at a dose 2 mg/kg/die, maximum 60mg/day, or equivalent) for 8 weeks and/or an immunosuppressive of proven efficacy (azathioprine o 6-mercaptopurine for 4 months; methotrexate for 3 months; Infliximab at the dose of 5 mg/kg at week 0,2,6 weeks; cyclosporine at the dose of 2mg/kg/day for 4 weeks or 1 week at 1m/kg/day EV) or patients exhibiting intolerance to these drugs which prevent them from continuing treatment.