Glomerular Immunodeposits of Patients with IgA Nephropathy Are Enriched for IgG Autoantibodies Specific for Galactose-Deficient IgA1

Abstract

These results reveal for the first time that IgAN kidney biopsies, with or without IgG by routine immunofluorescence, contain Gd-IgA1-specific IgG autoantibodies. These findings support the importance of these autoantibodies in the pathogenesis of IgAN.