glomerulonephritis AE IgM nephropathy AE An adverse event with the IgM nephropathy, a form of glomerulonephritis (an inflammation of the glomeruli of the kidney), primarily characterized by deposition of the IgM antibody in the glomerulus. https://nephcure.org/livingwithkidneydisease/understanding-glomerular-disease/other-glomerular-diseases/igm-nephropathy/ YH