CD274 and diffuse large B-cell lymphoma: PDL1 TPS scores were found to be significantly associated with blood CD4+T-cell count (p = 0.000), lactate dehydrogenase (LDH) (p = 0.020), cerebrospinal fluid (CSF) chloride (p = 0.000), location in the lateral ventricles and basal ganglia (p = 0.019), activated B-cell (ABC)-like diffuse large B-cell lymphoma (DLBCL) (p = 0.004), necrosis area (p = 0.000), CD10 (p = 0.000), BCL6 (p = 0.003), BCL2 (p = 0.005), c-MYC (p = 0.003), Epstein–Barr encoding region (EBER) (p = 0.000), and PD1 TPS (p = 0.039).