CLL/SLL IV stage, ATM (11q22) deletion, D13S25 (13q14. 3) positive, CD19 positive….Relapse of CLL/SLL occurred again after four months and at this stage the patient was considered for therapy in a clinical trial of CD19-specific chimeric antigen receptor (CAR-) T cell therapy....After treatment with CAR T 19 cell therapy for 53 months, the patient remained disease-free, the patient's lymph nodes, lymphocytes and Immunoglobulins were normal.