Microscopic Polyangiitis Clinical Trial
Official title:
CHUSPAN PAN BP Treatment of Polyarteritis Nodosa and Microscopic Polyangiitis Without Poor-Prognosis Factors a Prospective Randomized Study in 125 Patients
To assess the efficacy of systemic corticosteroids alone as first-line treatment of polyarteritis nodosa and microscopic polyangiitis without poor-prognosis factors as defined by the five-factor score (FFS=0), and to compare the efficacy and safety of azathioprine vs pulse cyclophosphamide as adjunctive immunosuppressive therapy to treat failure or relapse.
All patients initially treated with systemic corticosteroids alone: optional IV
methylprednisolone pulse (15 mg/kg) at treatment start followed by oral prednisone (1
mg/kg/day) according to a tapering schedule. Treating physicians allowed to treat minor
relapses with corticosteroids without referring the patient for randomization, as long as
the prednisone dose did not exceed 0.5 mg/kg for 1 month.
Patients in whom prednisone doses could not be tapered below 20 mg, those who failed to
enter remission and those who relapsed were randomized to receive either 6 months of oral
azathioprine (2mg/kg/day) or 6 cyclophosphamide pulses (0.6g/m2 D1, D15, D30 then every
month)
;
Allocation: Randomized, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment
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