CD274 and Burkitt lymphoma: Except for Burkitt lymphoma [20] (0 of 20 samples), similar results were obtained from the analysis of publicly available transcriptome sequencing data of PTCL [23] (1 of 35), ALCL [21] (1 of 23), CTCL [22] (1 of 13), and PMBCL [24] (3 of 6), where an marked increase in PD-L1 or PD-L2 mRNA expression was observed in most cases with PD-L1- or PD-L2-involving aberrant transcripts (Supplemental Figure S4A–C and Supplemental Table S6).