Clinical Study Comparing the New Immunosuppressive Drug Gusperimus With the Conventional Treatment in Wegener's Granulomatosis

Both severity subgroups will be treated with gusperimus + glucocorticoids up to 12 months.

"Severe subgroup: will receive intravenous cyclophosphamide pulses for at least 13 weeks and 22 weeks at maximum, followed by methotrexate + glucocorticoids after achieving a response with BVAS ≤ 2. Patients intolerant to methotrexate and patients with impaired renal function will receive azathioprine + glucocorticoids .~Non-severe subgroup: will receive methotrexate + glucocorticoids (or azathioprine + glucocorticoids for those previously intolerant to methotrexate or with impaired renal function)."