. Tables [0](#SFV000TB0){ref-type="table"} and [0](#SFV000TB0){ref-type="table"} and Figure [0](#SFV000F0){ref-type="fig"} show the comparison of clinical and histological data, response to therapy and prognosis among ANCA-positive IgAN, ANCA-negative IgAN and AASV patients with matched proportions of crescentic glomeruli. 