DDX53 and carcinoma: As a first pass here, we observed that the transduced and cloned mouse carcinoma cell lines developed, CT26-BARF1 and MC38-BARF1, expressed similar levels of BARF1 compared with human NPC and EBVaGC cell lines, C666-1 and SUN719, which have been previously obtained from EBV+ cancer patients (Figures S1D and S1E).