SAN DIEGO — CD19-directed chimeric antigen receptor (CAR) T-cell therapy, which has transformed the treatment landscape for B-cell malignancies, is now showing great promise in at least three distinct autoantibody-dependent autoimmune diseases. A single infusion of autologous CD19-directed CAR T-cell therapy led to persistent, drug-free remission in 15 patients with life-threatening systemic lupus erythematosus, idiopathic...