In two lupus mouse models (NZB/W and MRL-lpr strains), CD19 CAR-T cell transfer induced efficient and stable B cell depletion, elimination of circulating anti-DNA antibodies, and improvements in kidney function, spleen size, lymphocyte subset ratios, and skin inflammation, as well as a significant increase in lifespan (63). The gene discussed is CD19; the disease is systemic lupus erythematosus.