A male patient was diagnosed with BL-PTLD...Next-generation sequencing (NGS) was performed on formalin-fixed paraffin-embedded tumor tissue, revealing one mutation in exon 5, TP53: p.A159 V...We administered 9.0 × 106/kg autologous anti-CD19 CAR T-cells, after conditioning with cyclophosphamide and fludarabine....Finally, he went into complete remission (CR), and has achieved 16-month event-free survival to date.