Monarch Disease Ontology entry MONDO_0013892 (C3 glomerulonephritis) is glomerulonephritis characterized by C3 accumulation with little or absent deposition of immunoglobulin, in the absence of ultrastructural electron-dense transformation seen in dense deposit disease. Also known as: complement-mediated membranoproliferative glomerulonephritis, nephropathy due to CFHR5 deficiency.