CD8+ T cells are the principal component of the TME and participate in anti-tumour immunity through cytotoxic T cell actions, and thus, increased CD8+ T cells were determined to be a favourable prognostic factor (HR: 0.73, 95% CI: 0.54–0.99, p = 0.048; Figure 5C). The gene discussed is CD8A; the disease is neoplasm.