CD4 and diffuse large B-cell lymphoma: PDL1 CPS scores were found to be significantly positively correlated with lower blood CD4+T-cell count (p = 0.000), lower CSF sugar (p = 0.040), ABC-like DLBCL (p = 0.007), necrosis area (p = 0.000), higher expression of Ki-67 (p = 0.033), positive expression of EBER (p = 0.000), and lower PD1 CPS (p = 0.021).