Pilot Study of Anti-CD20-CAR-engineered T Cells in Patients With Chemotherapy Resistant or Refractory CD20+ Lymphoma

Inclusion Criteria: 1. Relapsed or refractory CD20+ B-cell lymphoma. 2. Measurable disease. 3. Performance status ECOG 0-2. 4. Age:18-65. 5. Fertile females/males must consent to use contraceptives during participation of the trial. 6. Signed informed consent Exclusion Criteria: 1. Any significant medical or psychiatric illness that would prevent the patient from giving informed consent or from following the study procedures. 2. Patients with primary CNS lymphoma. 3. Known human immunodeficiency virus (HIV) infection. 4. Active and/or severe infection (e.g. tuberculosis, sepsis and opportunistic infections, active hepatitis B virus (HBV) or active hepatitis C virus (HCV) infection). 5. Other serious underlying medical conditions, which, in the Investigator's judgment, could impair the ability of the patient. 6. Treatment with an investigational product within 30 days prior to enrollment, or at least 5 half lives of that drug, which is longest. 7. Patients that do not consent to that tissue and blood samples are stored in a biobank. 8. Pregnancy. \-