CRP and vasculitis: Multivariate analyses demonstrated that, as independent factors associated with better vadadustat response, high baseline hemoglobin, low baseline eGFR, high week-20–24 ferritin, and CKD with causes other than autoimmune disease/glomerulonephritis/vasculitis in patients with NDD-CKD; and male sex, high baseline CRP, and low baseline ERI in those with HDD-CKD.