CD79A and kidney disorder: IgA-associated renal diseases are characterized by predominant or co-dominant IgA deposition—either as monomers, polymers, or immune complexes—in various glomerular compartments, most commonly the mesangium but also within capillary loops and along subepithelial, intramembranous, and subendothelial regions [[7], [8], [9], [10], [11]].