Originally developed for aggressive blood cancers, CAR-T cell therapy is now being explored as a possible breakthrough treatment for autoimmune diseases such as lupus, multiple sclerosis and rheumatoid arthritis, offering the possibility of long-term remission instead of lifelong immune suppression Originally developed for aggressive blood cancers, CAR-T cell therapy is now being explored as a possible breakthrough treatment for autoimmune diseases such as lupus, multiple sclerosis and rheumatoid arthritis, offering the possibility of long-term remission instead of lifelong immune suppression