OBINOTUZUMAB Versus Cyclophosphamide + Glucocorticoids in Primary Membranous Nephropathy(Blossom Study)

"Participants in the control arm will receive cyclical cyclophosphamide and glucocorticoids.~Oral cyclophosphamide will be given for 30 days in month 2, 4, 6.~The dosage is adjusted based on the age and renal function (rounded down to the nearest 25 mg, max 100 mg/day, Cyclophosphamide tablets should not be split; if necessary, alternating doses of 50 mg/day and 100 mg/day can be used):~* 2.0 mg/kg/d in patients \< 65 years with eGFR ≥60ml/min~* 1.5 mg/kg/d in patients \< 65 years with eGFR\<60ml/min~* 1.5 mg/kg/d in patients ≥ 65 years with eGFR ≥60ml/min~* 1.0 mg/kg/d in patients ≥ 65 years with eGFR\<60ml/min"

"Participants in the control arm will receive cyclical cyclophosphamide and glucocorticoids.~Methylprednisolone 500 mg iv will be given for 3 consecutive days at the start of month 1,3,5 and followed by prednisone 0.5mg/kg/d (max 40mg/d) for 27 days."