Figure 9A exhibits a panoramic view of immune cell infiltration in the tumor microenvironment of NPC. As seen in the violin plot (Figure 9B), the infiltration of macrophages M2, neutrophils, and dendritic cells resting were relatively more in the AURKA high-expression group. In contrast, T-cell CD4+ naïve and T-cell γδ infiltration were less. Correlation analysis showed a positive correlation of AURKA expression with neutrophils, macrophages M2, and dendritic cells resting and negative correlation with T cell CD4+ naïve and T cell γδ cells (Figure 9C). This evidence concerns the gene CD4 and nasopharyngeal carcinoma.