Improving the Outcome of High-risk Aggressive B-cell Lymphoma Patients With Nivolumab Maintenance Therapy

The rationale for prolonged nivolumab therapy in high-risk ABCL patients in CR following 1st line standard therapy is based on the hypothesis that the stimulation of immune system by Programmed cell death protein 1 (PD1) blockade will also facilitate the eradication of minimal residual disease (MRD), that is not apparent by positron emission tomography (PET) imaging, and eventually will prevent relapse and improve survival. The Study will include adult patients, age ≥18, with high risk (IPI≥3) ABCL, in CR according to PETCT, as defined by the Lugano Criteria, following first-line rituximab (R) and anthracycline-containing regimen.