The correlation between RASAL3 expression and CD8+ tumour‐associated T lymphocyte infiltration was further validated by TMA‐based IHC (Figure 6 E‐H), confirming that RASAL3 expression was strongly positively correlated with CD8+ tumour‐associated T lymphocyte infiltration in line with the CIBERSORT algorithm, TIMER database and TCGA cohort results. The gene discussed is CD8A; the disease is neoplasm.