Chimeric antigen receptor (CAR) T cell therapies have advanced rapidly in recent years, with a number of targets in clinical research and several US Food and Drug Administration (FDA)-approved products already on the market. There has been tremendous effort to make CAR T cells more effective, safe, and persistent when treating patients. On the manufacturing side, however, errors, lot-to-lot variation, and contamination can be associated with open processes and manual handling of CAR T cells. Cell isolation, gene editing, expansion,…