Twenty-one subjects with CD19+ rrALL received SCRI-CAR19v2...With a minimum of 1-year follow up (range 12-18 months), the 12-month event-free survival (EFS) and overall survival were 76% (95% CI 59-97) and 86% (95% CI 72-100), respectively... Of the 5 leukemic relapses, 1 lacked CD19 and 2 recurred as AML.