CD79A and glomerulonephritis: Since its first description, les dépôts intercapillaires d’IgA-IgG (intercapillary deposits of IgA-IgG), by Berger and Hinglais in 1968 [1], IgA nephropathy (IgAN) continues to be recognized as the most common form of glomerulonephritis in many parts of the world [2–6].