A Phase 2, Single-arm, Multi-center Trial to Determine the Efficacy and Safety of JCAR017 in Subjects With Relapsed or Refractory Diffuse Large B-Cell Lymphoma or With Other Aggressive B-Cell Malignancies

This open-label Phase 2 study will evaluate the safety and efficacy of modified T cells (JCAR017) administered to adult patients with aggressive B-cell non-Hodgkin lymphoma (NHL). The study will also help determine how long the modified T cells stay in the patient's body. Furthermore, changes in the patient's quality of life will be described. Phase 2 (autologous T cells expressing anti-CD19 chimeric antigen receptor) (DLBCL NOS [de novo or tFL], follicular lymphoma Grade 3B [FL3B], high grade B-cell Lymphoma [HGBL] and primary central nervous system lymphoma [PCNSL]).