CD79A and rapidly progressive glomerulonephritis: The same study found that cGN was detected in 7.5% (61/808) renal biopsies performed in children at their center.6 In children most RPGN is seen in the setting of immune complex (IC) mediated GN (PSGN, SLE, IgA, HSP).7,8 An Indian study showed a higher prevalence of pauci immune (PI) mediated RPGN compared to IC (71.7% vs 28.3%)9 raising the concern that PI is also an important cause of RPGN in children.10