CD8A and neoplasm: CD8+T cells, which are important immune cells involved in tumorigenesis and development, are known to play a role in tumor cell immune escape.[28, 29] We found that the expression of PTBP3 was negatively correlated with CD8+T cell infiltration, whereas the IL‐18 PSI value was positively correlated with CD8+T cell infiltration (Figure 3B,C).