A case of rapidly progressive glomerulonephritis in a 17-year-old patient associated with antibodies against the cytoplasm of neutrophils (ANCA) vasculitis - ANCA-associated vasculitis is associated with antibodies to proteinase-3 and morphological picture extracapillar glomerulonephritis with sclerotic lesion of up to 80% of the glomeruli. The peculiarity of the case is the presence of morphologically confirmed when alloimmune rapidly progressive glomerulonephritis type III a pronounced glow-focal granular nature of immunoglobulin classes G and M on the basement membrane of capillaries. The appointment of immunosuppressive therapy led to a decrease in systemic manifestations of vasculitis, but there was a rapid increase in terminal renal failure, which required substitution therapy with hemodialysis. The possible mechanisms of the rapid-training course of the disease in the observed patient, prospects for kidney transplantation are discussed.