MC-19PD1 CAR-T in Relapsed or Refractory B Cell Lymphoma

Inclusion Criteria: （1）CD19 positive B-cell lymphoma; （2）Relapsed and refractory B-cell lymphoma: patients previously received at least first-line and second- line treatment and fail to achieve CR; （3）At least 1 measurable tumor foci according to the 2014 Lugano treatment response criteria; （4）18 to 70 Years Old, Male and female; （5）Expected to survive for more than 3 months; （6）Clinical performance status of ECOG score 0-1; （7）Important organ function is satisfied: cardiac ultrasound indicates cardiac ejection fraction ≥50%; serum Cr ≤ 1.25 times normal range or creatinine clearance calculated by Cockcroft-Gault formula ≥45ml/min; ALT and AST≤ 3 times normal range, total bilirubin ≤ 1.5times normal range; （8）hemoglobin ≥ 80 g / L, neutrophils ≥ 1.0 × 10 \^ 9 / L, platelets ≥ 50 × 10 \^ 9 / L. （9）INR≤ 1.5times normal range; APTT≤ 1.5times normal range; （10）Women in childbearing age must be not pregnant and do not plan pregnancy within 1 year of their cell transfusion; （11）Informed consent is signed by a subject or his lineal relation. Exclusion Criteria: 1. Recent or current use of glucocorticoid or other immunosuppressor or Drug that stimulates bone marrow hematopoiesis; 2. Uncontrolled systemic active infection: fungi, bacteria, viruses or other infections; 3. Active infection with HBV, HCV or HIV; 4. Patients with symptoms and disease history of central nervous system; 5. Pregnant or lactating female；The patient did not agree to use effective contraception during the treatment period and for the following 1 year； 6. Patients receiving allogeneic hematopoietic stem cell transplantation, or organ transplantation 7. A history of other malignant tumors; 8. Primary immunodeficiency disease, or autoimmune disease; 9. Patients treated with PD-1 inhibitors or PD-L1 inhibitors prior to enrollment; 10. Patients who participated in other clinical trials within 4 weeks before blood collection; 11. Patients who had used CD19 targeted therapy before enrollment; 12. The investigator believes that there are other factors that are not suitable for inclusion or influence the subject's participation or completion of the study.