For example, M1 macrophages [53], CD4 cells, CD8 cells [54, 55], NK cells [56], and dendritic cells [57] in NSCLC promoted antitumor immune responses and improved prognosis; M2 macrophages [58], regulatory T cells [59, 60], and Th17 cells [61] were associated with immunosuppression and poor prognosis in NSCLC. The gene discussed is CD8A; the disease is non-small cell lung carcinoma.