GYPA and anti-neutrophil cytoplasmic antibody-associated vasculitis: The first cohort study [23] examined 80 patients with AAV, including 20, 28, and 32 patients with RLV, MPA, and GPA, respectively, and reported lower incidences of ESRD and mortality in patients with RLV; however, the patients with RLV in this study had higher eGFR levels at baseline than those with MPA and GPA.