<prompt> Type I Rapidly progressive glomerulonephritis is seen inSLEIgA nephropathyHenoch Schonlein purpuraGood pasture syndrome  <response>: Rapidly progressive glomerulonephritis RPGN is a syndrome of the kidney that is characterized by a rapid loss of kidney function, usually a 50 decline in the glomerular filtration rate GFR within 3 months with glomerular crescent formation seen in at least 50 or 75 of glomeruli seen on kidney biopsies. Refer robbins 9e 