Sample 53

Inclusion Criteria:Histologically documented non-keratinizing locally advanced recurrent or metastatic NPC.Must be resistant to platinum-based chemotherapy (defined as progression on or after platinum-based chemotherapy given in the recurrent/metastatic setting).May have received at least 1 prior therapy for recurrent or metastatic disease, up to 2 prior systemic therapies.An archival tumor specimen or newly obtained tumor sample may be submitted at screening/baseline (a fresh tumor sample is preferred), unless agreed differently between Novartis and the Investigator.At least 1 measurable lesion (as per RECIST v1.1) progressing or new since last anti-tumor therapy.Prior treated brain or meningeal metastases must be without MRI evidence of progression for at least 8 weeks and off systemic steroids for at least 2 weeks prior to screening/baseline.Patient must be willing to undergo testing for human immunodeficiency virus (HIV) if not tested within the past 6 months.

If HIV+ positive, patient will be eligible if: his/ her CD4+ count ≥ 300/μL; his/her viral load is undetectable; he/she is currently receiving highly active antiretroviral therapy (HAART).Exclusion Criteria:History of severe hypersensitivity reactions to other mAbsActive autoimmune disease or a documented history of autoimmune disease, except vitiligo or resolved asthma/atopy that is treated with broncho-dilators.Active HBV or HCV infections requiring therapy.Prior PD-1- or PD-L1-directed therapy or any therapeutic cancer vaccine.Patients receiving systemic treatment with any immunosuppressive medication.Use of any vaccines against infectious diseases (e.g.

varicella, pneumococcus) within 4 weeks of initiation of study treatment.