Based on the importance of tumor-infiltrating immune cells to patient survival, the database Tumor Immunoassay Resource (TIMER) conducts a comprehensive analysis of tumor immunology and clinical and genomics data, which is used to estimate the abundance of six tumor-infiltrating immune cell (TIIC) subsets (B cells, CD4 T cells, CD8 T cells, macrophages, neutrophils, and DCs) to comprehensively study the molecular characterization of tumor-immune interactions. Here, CD8A is linked to neoplasm.