<h4>Rationale</h4>Here we report a rare case of a patient with serum immunoglobulin G (IgG) κ and glomerular immunoglobulin A (IgA) λ chain types in proliferative glomerulonephritis with monoclonal immunoglobulin deposits (PGNMID). Here, CD79A is linked to proliferative glomerulonephritis.