CD8A and head and neck squamous cell carcinoma: In HNSCC, mutated type (MT) Notch1 showed a significant positive correlation with CD8+ T cell (TIMER), CD8+ T cell (CIBERSORT), and CD8+ naïve T cell infiltration levels (Figure 6B), while wild‐type Notch1 (WT) showed a significant negative correlation with CD8+ T cell (TIMER) and CD8+ naïve T cell (XCELL).