About this trial
The goal of this clinical trial is to learn whether adding Zuberitamab to standard corticosteroid therapy can help prevent relapse in children and adolescents aged 1 to 18 years with newly diagnosed steroid-sensitive nephrotic syndrome (SSNS). It will also learn about the safety of Zuberitamab.
The main questions it aims to answer are:
* Does Zuberitamab plus standard corticosteroid therapy prolong the time to first relapse compared with standard corticosteroid therapy alone? * What medical problems do participants experience during treatment?
Researchers will compare Zuberitamab plus standard corticosteroid therapy to standard corticosteroid therapy alone to see whether adding Zuberitamab improves disease control.
Participants will:
* Receive standard corticosteroid treatment for approximately 12 weeks, with or without a single intravenous infusion of Zuberitamab after achieving remission * Take preventive antibiotics if they are in the Zuberitamab group * Test their urine daily at home using dipsticks and record results in a diary * Visit the clinic for regular checkups and blood and urine tests during follow-up for up to 12 months
Eligibility criteria
Qualifiers
Newly diagnosed steroid-sensitive nephrotic syndrome (SSNS) according to the 2023 IPNA criteria, who achieved complete remission after steroid induction therapy prior to study entry, defined as UPCR (based on first morning void or 24 h urine sample) <= 20 mg/mmol (0.2 mg/mg), or negative or trace dipstick on three or more consecutive days.
An estimated glomerular filtration rate >= 90 mL/min/ 1.73 m2 at study entry.
Peripheral blood CD20+ (detected as CD19+) cells >= 1% of total lymphocytes.
No use of other immunosuppressants within 3 months prior to study entry, other than steroids for nephrotic syndrome.
Disqualifiers
Known etiology including congenital nephrotic syndrome, IgA nephropathy, Henoch-Schönlein purpura nephritis, lupus nephritis, or other secondary nephrotic syndromes.
Patients exhibiting any of the following abnormal clinical laboratory values: leukopenia (white blood cells <= 3.0 × 10^9/L), absolute neutrophil count < 1.5 × 10^9/L; moderate to severe anemia (hemoglobin < 9.0 g/dL); thrombocytopenia (platelet count < 100 × 10^12/L); alanine aminotransferase (ALT) or aspartate aminotransferase (AST) > 2.5 times the upper limit of normal; positive for any autoimmune markers (ANA, ENA, ANCA, etc.) or decreased complement C3 levels.
Evidence of the following infections: severe or opportunistic infection within the previous 6 months (active tuberculosis or history of tuberculosis or suspected tuberculosis; chronic active infections such as EBV, CMV; active hepatitis B presentation or history, or hepatitis C or hepatitis B virus carrier; HIV infection; or other active viral infections).
Receipt of live vaccine within one month prior to study entry.
Trial design
Treatments tested in this trial
- Zuberitamab
- standard corticosteroid treatment
Treatment groups
Sponsors and collaborators
Children's Hospital of Fudan University
Lead sponsor
Guiyang Maternal and Child Health Care Hospital
Collaborator
Wuhan Children's Hospital
Collaborator
Shanghai Children's Medical Center
Collaborator
Xinhua Hospital, Shanghai Jiao Tong University School of Medicine
Collaborator
Shanghai Children's Hospital
Collaborator
Wuxi Women's & Children's Hospital
Collaborator
Xiamen Maternity & Child Care Hospital
Collaborator
Second Xiangya Hospital of Central South University
Collaborator