Phase 3 Trial of Mezagitamab Injections for Adults with Primary IgA Nephropathy Kidney Disease

What this Trial Is About

This research aims to evaluate mezagitamab for adults with primary Immunoglobulin A nephropathy IgAN, a kidney disease caused by immune protein buildup leading to inflammation and potential kidney damage. The study will compare how mezagitamab affects protein levels in urine proteinuria against a placebo, focusing on safety, tolerability, and maintenance of kidney function over time. Participants will be randomly assigned to either receive mezagitamab or a placebo injection subcutaneously over approximately 22 weeks in the main group, with a 21 ratio favoring mezagitamab. An open-label group includes participants with specific proteinuria or kidney filtration levels, including those from a prior related study, all receiving mezagitamab in the same manner. After treatment, participants will be observed for about 1.5 years with regular check-ups. During the study, participants will attend multiple clinic visits for treatment and monitoring. Researchers will measure changes in proteinuria at Week 36 as the primary outcome, as well as kidney filtration rates over one and two years. Safety and long-term kidney function will be closely monitored throughout the 2-year participation period.

A Study of Mezagitamab in Adults With Kidney Condition Called IgA Nephropathy