CD79A and primary membranoproliferative glomerulonephritis: Considering the presence of proliferative glomerulonephritis with IgA deposits, our differential diagnoses included IgA nephropathy, IgA-dominant postinfectious glomerulonephritis, IgA-dominant membranoproliferative glomerulonephritis (MPGN), and IgA-proliferative glomerulonephritis with monoclonal immunoglobulin deposits (PGNMID).