PRTN3 and ganglioneuroma: The prevalence of stronger IF findings in our study was higher than previously reported, which may be ascribed to recruiting only MPO-ANCA GN patients rather than all the ANCA-GN patients including PR3-ANCA-GN, and there were no comparative data in detail about IC deposition between MPO-ANCA GN and PR3-ANCA-GN.