P22 | Granulomatosis with polyangiitis: plasmapheresis as a method to reduce permanent renal failure and incidence of side effects of rituxibab: V. Bosco1, F. Mauceri1, V. Nicotra2, P. Gargano1, M. Carbone1, M. Romano1, S. Urso3 | 1Department of Clinical and Experimental Medicine, University of Catania, Garibaldi Hospital, Catania, 2Geriatric Department, Garibaldi-Nesima Hospital, Catania, 3UOSD Nephrology, Garibaldi-Nesima Hospital, Catania, Italy. Italian Journal of Medicine, v. 19, n. s1, 25 Aug.2025.