CD79A and IgA glomerulonephritis: With an incidence of 3–16% in healthy individuals, IgA nephropathy (or Berger's disease) is the most common type of glomerulonephritis across the world.1, 2, 3, 4, 5 It can be seen more frequently in the second and third decades of life, and the name originates from predominant IgA immune complex deposition in the glomerular mesangium on biopsy.6