CD274 and lymphoma: Recently, the use of immune checkpoint inhibitors has largely expanded to include hematological malignancies, specifically relapsed/refractory chemoresistant Hodgkin’s Lymphoma (r/r-cHL) and primary mediastinal large B-cell lymphoma [2, 3].The rationale relies on the fact that genetic alterations occurring in the microenvironment of lymphomas specifically in the programmed death ligand receptor (PD-L1/PD-L2) loci can lead to overexpression of PD-L1/2 on malignant cells, which helps tumor cells to evade the effective antitumor immune response [4].