Primary immune-complex membranoproliferative glomerulonephritis

Primary immune-complex membranoproliferative glomerulonephritis (primary IC-MPGN) is a rare, progressive glomerular disease of the renal system occurring in the absence of an identifiable secondary etiology such as chronic infection, autoimmune disease, or monoclonal gammopathy

Primary immune-complex membranoproliferative glomerulonephritis (primary IC-MPGN) is a rare, progressive glomerular disease of the renal system occurring in the absence of an identifiable secondary etiology such as chronic infection, autoimmune disease, or monoclonal gammopathy

Primary immune-complex membranoproliferative glomerulonephritis (primary IC-MPGN) is a rare, progressive glomerular disease of the renal system occurring in the absence of an identifiable secondary etiology such as chronic infection, autoimmune disease, or monoclonal gammopathy It predominantly affects children and young adults and is pathophysiologically driven by the persistent deposition of circulating or in situ–formed antigen-antibody immune complexes and complement factors within the glome...

It predominantly affects children and young adults and is pathophysiologically driven by the persistent deposition of circulating or in situ–formed antigen-antibody immune complexes and complement factors within the glomerular subendothelial space and mesangium Clinically, affected individuals present with variable manifestations of nephritic or nephrotic syndrome, including hematuria, proteinuria, hypertension, and progressive renal insufficiency

It predominantly affects children and young adults and is pathophysiologically driven by the persistent deposition of circulating or in situ–formed antigen-antibody immune complexes and complement factors within the glomerular subendothelial space and mesangium

This deposition triggers classical or lectin complement pathway activation and local inflammation, yielding characteristic histologic features of mesangial hypercellularity, endocapillary proliferation, and glomerular basement membrane thickening with "tram-track" double contouring

This deposition triggers classical or lectin complement pathway activation and local inflammation, yielding characteristic histologic features of mesangial hypercellularity, endocapillary proliferation, and glomerular basement membrane thickening with "tram-track" double contouring

Clinically, affected individuals present with variable manifestations of nephritic or nephrotic syndrome, including hematuria, proteinuria, hypertension, and progressive renal insufficiency