SAN DIEGO – Almost exactly 10 years ago, on May 28, 2009, Steven Rosenberg was the first person to treat a patient with CAR T cells. That patient, a 48-year-old construction worker with metastatic non-Hodgkin lymphoma, is now 58 and remains in remission, as well as working full time. Two CAR T-cell therapies have been approved, and more than 1,000 patients have been treated with them.