18 mos study of 78 patients with ANCA Assoc Vasculitis showed baseline IL-6 levels correlate with PR3-ANCA (not MPO) titers; while assoc w/ certain Sxs (fever, pulm nodules/cavities), deafness, RBC casts; sIL6 levels did not predict responses at 6 mos https://t.co/jawVLOSQnZ