When leukemia relapses after chemotherapy, many patients and families fear their options have run out. The reality is more hopeful: advanced treatments including CAR-T cell therapy, stem cell transplants, and immunotherapies can deliver remission even after standard regimens fail. Key Takeaways Treatment options remain available when leukemia relapses after chemotherapy, CAR-T cell therapy is FDA-approved for B-cell ALL and CLL, while allogeneic stem cell transplant addresses