In the described study, the protein expression of PD‐L1 was detected by IHC with the antibodies SP263 and SP142, the mRNA level was measured by RNAscope, and the PD‐L1 genetic locus alteration of 9p24.1 was analyzed by fluorescence in situ hybridization (FISH) in a cohort of DLBCL, including DLBCL‐NOS, PMBCL, and double‐hit lymphoma (DHL). This evidence concerns the gene CD274 and diffuse large B-cell lymphoma.