Clinical Trials

Inclusion Criteria:

• Relapsed or refractory DLBCL following at least 2 lines (and a maximum of 4 lines) of prior rituximab containing multi-agent chemotherapy which may include an autologous stem cell transplantation unless patients are not considered suitable for intensive second-line chemotherapy or autologous stem cell transplantation. Patients who are ineligible for intensive second line chemotherapy,must have received at least one prior rituximab-containing combination chemotherapy regimen. Patients who are ineligible for intensive second line chemotherapy, must have received at least one prior rituximab-containing combination chemotherapy regimen.
• Baseline measurable disease with at least 1 bi dimensional lesion >1.5cm on CT scan which is FDG avid on PET scan.
• A biopsy (archived or Screening/recent) will be collected at Screening.
• At least 18years of age (or ≥20 years in Japan).
• Eastern Cooperative Oncology Group (ECOG) Performance Status (PS) 0 or 1.

Exclusion Criteria:

• Transformed lymphoma or Burkitt's Lymphoma.
• Active/symptomatic central nervous system (CNS) lymphoma based on clinical evaluation.
• Prior organ transplantation including prior allogeneic SCT.
• Prior therapy with an anti PD 1, anti PD L1, anti PD L2, anti CD137, or anti cytotoxic T lymphocyte associated antigen 4 (CTLA 4) antibody (including ipilimumab, tremelimumab or any other antibody, or drug specifically targeting T cell co stimulatory or immune checkpoint pathways).