Lower immune scores significantly associated with malignant progression of ACC Scatter plots revealed the distribution of immune scores in AJCC‐T (P = 0.1573) (A), AJCC‐N (P = 0.0787) (B), AJCC‐M (P = 0.8842) (C), tumor stage (P = 0.0664) (D) and event of malignant progression (P = 0.0204) (E). Lower immune scores were associated with DM and LR than other cases. K‐M survival curve shown that ACC patients with lower immune scores were associated with poor survival outcomes (P = 0.0495) (F). Results of K‐M analysis in stromal score (G) and ESTIMATE score (H) shown no statistical significance (P = 0.3064, P = 0.2210, respectively). DM, distant metastasis; K‐M, Kaplan‐Meier; LR, locoregional recurrence