Glomerulonephritis related to staphylococcal infection is also defined as an IgA-dominant PIGN or Staphylococcus infection-associated glomerulonephritis mimicking IgA nephropathy.4 Diabetes is a major risk factor for glomerulonephritis related to staphylococcal infection, and is associated with the increased skin and mucosal colonization.5 The pathogenesis involves staphylococcal neutral phosphatase,6 a 70-kDa protein (p70)7 that has affinities for both human IgG and rat glomerular basement membrane. The gene discussed is CD79A; the disease is glomerulonephritis.