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

Phase 3RecruitingNCT06781944

Huashan Hospital144 enrolled

Overview

This is a randomized, parallel group, active-controlled, open-label, Phase III study comparing the efficacy and safety of obinutuzumab versus cyclophosphamide combined with glucocorticoids in patients with primary membranous nephropathy (pMN). Approximately 144 patients with pMN who have been diagnosed by biopsy or serum anti-PLA2R antibody will be enrolled. Intervention: Intravenous infusion of 1,000 mg obinutuzumab at weeks 0, 2, 24 and 26 Comparator: 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 40 mg/d) for 27 days. Oral cyclophosphamide will be given for 30 days in month 2, 4, 6.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

NONE

Enrollment

144

Conditions

Primary Membranous Nephropathy

Interventions

CTX combined with GlucocorticoidsDRUG

Drug: 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. Drug: CTX Oral cyclophosphamide will be given for 30 days in month 2, 4, 6.

Eligibility

Sex: ALLMin age: 18 YearsMax age: 75 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Aged 18～75 years (including 18 and 75)old at the time of signing Informed Consent Form * pMN patients diagnosed according to renal biopsy (original biopsy needs to include light, immunofluorescence, and electron microscopy) within 5 years or serum anti-PLA2R antibody (≥14 RU/ml ) * 24-hour UPCR ≥ 4 g/g and serum albumin (sALB) \< 30 g/L,despite being treated with ACEi and/or ARB for ≥ 6 months prior to screening, or 24-hour UPCR ≥ 5 g/g and sALB \< 30 g/L , despite being treated with ACEi and/or ARB for ≥ 3 months prior to screening; or 24-hour UPCR ≥ 8 g/g and sALB \< 25 g/L, despite being treated with ACEi and/or ARB for ≥ 1 month prior to screening,. * eGFR ≥40 mL/min/1.73m2 (CKD-EPI), a renal biopsy is required to exclude renal damage due to other co-morbidities if eGFR \<60mL/min/1.73 m2. * Ability to comply with the study protocol, in the investigator's judgment Exclusion Criteria: * Patients with a secondary cause of MN (e.g. hepatitis B, systemic lupus erythematosus, medications, malignancies) * Type 1 or 2 diabetes mellitus * eGFR \<40 mL/min/1.73m2 (CKD-EPI) or dialysis or kidney transplantation * Evidence of 50% reduction in proteinuria or serum anti-PLA2R antibody within 6 months prior to screening

Outcomes

Primary Outcomes

The proportion of patients who achieve overall remission (OR) (Complete remission [CR] or prtial remission[PR]) assessed by 24-hour urinary protein to creatinine ratio at Month 24

Collect 24-hour urine from patients in the 24th month and measure the 24-hour urinary protein to creatinine ratio (24-hour UPCR) to evaluate the proportion of patients achieving total response (OR) (complete response \[CR\] or partial response \[PR\]).

Time frame: Month 24

Secondary Outcomes

The proportion of patients who achieve overall remission (OR) (Complete remission [CR] or prtial remission[PR]) assessed by 24-hour urinary protein to creatinine ratio at Month 6

Collect 24-hour urine from patients in the 6th month and measure the 24-hour urinary protein to creatinine ratio (24-hour UPCR) to evaluate the proportion of patients achieving total response (OR) (complete response \[CR\] or partial response \[PR\]). * CR is defined as a urinary protein-to-creatinine ratio (UPCR) ≤0.3 g/g (24-hour urine). * PR is defined as reduction of urinary protein-to-creatinine ratio (UPCR) (24-hour urine) from baseline ≥ 50% ,plus ≤3.5 g/g but \>0.3 g/g.

Time frame: Month 6

The proportion of patients who achieve overall remission (OR) (Complete remission [CR] or prtial remission[PR]) assessed by 24-hour urinary protein to creatinine ratio at Month 12

Collect 24-hour urine from patients in the 12th month and perform 24-hour urinary protein to creatinine ratio (24-hour UPCR) testing to evaluate the proportion of patients who achieve OR(Complete remission \[CR\] or prtial remission\[PR\]) . * CR is defined as a urinary protein-to-creatinine ratio (UPCR) ≤0.3 g/g (24-hour urine) * PR is defined as reduction of urinary protein-to-creatinine ratio (UPCR) (24-hour urine) from baseline ≥ 50% ,plus ≤3.5 g/g but \>0.3 g/g

Time frame: Month 12

The proportion of patients who achieve CR assessed by 24-hour urinary protein to creatinine ratio at Month 12

Collect 24-hour urine from patients in the 12th month and measure the 24-hour urinary protein to creatinine ratio (24-hour UPCR) to evaluate the proportion of patients achieving CR. · CR is defined as a urinary protein-to-creatinine ratio (UPCR) ≤0.3 g/g (24-hour urine).

Time frame: Month 12

The proportion of patients who achieve PR assessed by 24-hour urinary protein to creatinine ratio at Month 12

Collect 24-hour urine from patients in the 12th month and measure the 24-hour urinary protein to creatinine ratio (24-hour UPCR) to evaluate the proportion of patients achieving PR. * PR is defined as reduction of urinary protein-to-creatinine ratio (UPCR) (24-hour urine) from baseline ≥ 50% ,plus ≤3.5 g/g but \>0.3 g/g.

Time frame: Month 12

The proportion of patients who achieve overall remission (OR) (Complete remission [CR] or artial remission[PR]) assessed by 24-hour urinary protein to creatinine ratio at Month 18

Collect 24-hour urine from patients in the 18th month and perform 24-hour urinary protein to creatinine ratio (24-hour UPCR) testing to evaluate the proportion of patients who achieve OR(Complete remission \[CR\] or artial remission\[PR\]) . * CR is defined as a urinary protein-to-creatinine ratio (UPCR) ≤0.3 g/g (24-hour urine). * PR is defined as reduction of urinary protein-to-creatinine ratio (UPCR) (24-hour urine) from baseline ≥ 50% ,plus ≤3.5 g/g but \>0.3 g/g.

Time frame: Month 18

The proportion of patients who achieve CR assessed by 24-hour urinary protein to creatinine ratio at Month 18

Time frame: Month 18

The proportion of patients who achieve PR assessed by 24-hour urinary protein to creatinine ratio at Month 18

Collect 24-hour urine from patients in the 18th month and measure the 24-hour urinary protein to creatinine ratio (24-hour UPCR) to evaluate the proportion of patients achieving PR. · PR is defined as reduction of urinary protein-to-creatinine ratio (UPCR) (24-hour urine) from baseline ≥ 50% ,plus ≤3.5 g/g but \>0.3 g/g.

Time frame: Month 18

The proportion of patients who achieve CR assessed by 24-hour urinary protein to creatinine ratio at Month 24

Collect 24-hour urine from patients in the 12th month and measure the 24-hour urinary protein to creatinine ratio (24-hour UPCR) to evaluate the proportion of patients achieving CR. * CR is defined as a urinary protein-to-creatinine ratio (UPCR) ≤0.3 g/g (24-hour urine).

Time frame: Month 24

Central Contacts

Chuanming Hao C Chuanming Hao

CONTACT

+86-13501639098 chuanminghao@fudan.edu.cn

Qionghong Xie Q Qionghong Xie

CONTACT

+86-18121186869 qionghongxie@fudan.edu.cn

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

Overview

Conditions

Interventions

Eligibility

Locations (1)

Outcomes

Primary Outcomes

Secondary Outcomes

Central Contacts