8 research outputs found
Combination of Anti-CD123 and Anti-CD19 Chimeric Antigen Receptor T Cells for the Treatment and Prevention of Antigen-Loss Relapses Occurring after CD19-Targeted Immunotherapies
Induction of resistance to chimeric antigen receptor T cell therapy by transduction of a single leukemic B cell
We report a patient relapsing 9 months after CD19-targeted CAR T cell (CTL019) infusion with CD19– leukemia that aberrantly expressed the anti-CD19 CAR. The CAR gene was unintentionally introduced into a single leukemic B cell during T cell manufacturing, and its product bound in cis to the CD19 epitope on the surface of leukemic cells, masking it from recognition by and conferring resistance to CTL019