CD274 and nasopharyngeal carcinoma: As shown in Figure 4C, PTGS2 (a.k.a. COX-2), CD274 (a.k.a. PD-L1), CYP1B1, IFRD1, and AC135983.2 (a.k.a. WHAMMP1) were significantly upregulated in UPF1-KD and Emetine-treated NPC cells and downregulated in UPF1-overexpressing NPC cells, and their fold change in each group have been listed in Supplementary Table 2.