506 ANCA-Assoc vasculitis pt study - 72% were MPO-ANCA+ & 68% w/ renal Dz, & Rx w/ RTX (59%) or CTX (33%) - 16% died, 10% ESRD & 13% relapsed. ANCA negativity had less relapse (HR 0.55; 0.38, 0.81) but not less ESRD or death @ 5 yrs https://t.co/iCrxH9UArl https://t.co/6s3TmQqxVQ