In the efficacy-evaluable set (n=23), the overall (OR) and complete response (CR) rates at day 28 were 74% and 52%, respectively. After a median follow-up of 15 months, the 12-month progression-free survival (PFS) and overall survival (OS) were 43% and 86%, respectively. In pts in CR at day 28, the 12-month PFS was 71% (Figure A). In responders with subsequent disease progression, CD19 expression was confirmed in 3 of 3 of pts with available data (100%)...JCAR021, a fully-human scFv CD19-targeted CAR T-cell product, was dose-escalated to the RP2D with manageable toxicities in pts with R/R LBCL.