A longitudinal study of 506 ANCA-associated vasculitis (AAV) pts showed pts w/ negative ANCA serologies within 180 days of induction had signif lower risk of relapse (HR 0.55; 0.38 to 0.81) but not for ESRD or death within 5 years. https://t.co/Dn8GGXnSDi https://t.co/C73hG9T7Au