CD8A and nasopharyngeal carcinoma: Analysis by QUANTISEQ and XCELL algorithms further confirmed that NPC tumours with higher PJA1 expression were infiltrated with fewer DCs and CD8+ T cells than those with lower PJA1 expression (Supplementary Fig. 5b, c), while the infiltration of M1 macrophages and neutrophils did not differ significantly between these tumours (Supplementary Fig. 5d).