Study of Tisagenlecleucel in Combination With Pembrolizumab in r/r Diffuse Large B-cell Lymphoma Patients

Inclusion Criteria:

* Confirmed DLBCL per local histopathology assessment.
* Relapsed or refractory disease after having recieved 2 or more lines of systemic therapy, including anti-CD20 and anthracycline based chemotherapy, and either having progressed after (or relapsed after) ASCT, or being not candidates for or not consenting to ASCT.
* Measurable disease at time of enrollment
* ECOG performance status that is either 0 or 1 at screening.

Exclusion Criteria:

* Patients with Richter's transformation, and Burkitt lymphoma, and primary DLBCL of CNS.
* Prior treatment with any prior anti-CD19/anti-CD3 therapy, or any other anti-CD19 therapy.
* Patients with active CNS involvement are excluded, except if the CNS involvement has been effectively treated and provided that local treatment was \>4 weeks before enrollment.
* Prior allogeneic HSCT.
* Unstable angina and/or myocardial infarction and/or coronary artery bypass graft (CABG), or stroke within 6 months prior to screening, and/or impaired cardiac function or clinically significant cardiac disease
* Patients with a history of prior treatment with anti-PD-1, anti-PD-L1, anti-PD-L2, anti-CTLA-4 antibodies, other immune checkpoint inhibitors.
* History of interstitial lung disease or (non-infectious) pneumonitis that required oral or intravenous steroids (other than COPD exacerbation) or current pneumonitis.

Other protocol-defined inclusion/exclusion criteria may apply.