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Membranous-like glomerulopathy with masked monotypic IgG deposits: A single center case series
Background:
Membranous-like glomerulopathy with masked monoclonal IgG deposits (MGMID) is a newly recognized condition predominantly observed in young females, and its understanding in the pediatric population remains limited.
Materials And Methods:
Four cases of MGMID are reported, including three pediatric patients.
Results:
All patients were female, with ages ranging from 12 to 26 years. None of the patients had malignancies. They presented with kidney dysfunction, proteinuria, or hematuria. Kidney biopsies of all cases exhibited a membranous pattern of injury with monoclonal IgG-κ restriction, "unmasked" by pronase digestion. Pediatric cases were treated conservatively, while the adult case underwent immunosuppressive treatment. All patients had favorable outcomes, and none reached end stage kidney disease (ESKD).
Conclusion:
MGMID can affect both adult and pediatric patients. Further studies are needed to fully characterize its risk factors, optimal therapy, and outcomes.
