After rituximab use, patients with ANCA-associated vasculitis had increased rates of hypogammaglobulinemia, as compared to patients with RA or CTD. Prednisone>10mg/day may in part account for this association. Dr. Stefanie Wade #ACR19 @rheumnow #Abstr  #ACRBest https://t.co/CPWN2qSI9t