TAP2 (P < 0.001; Cor = 0.60), PSME2 (P < 0.001; Cor = 0.52), HLA - E (P < 0.001; Cor = 0.69), and LCK (P < 0.001; Cor = 0.69) (Figure 7A) positively related to CD8+ T cell and negatively correlated with tumor purity (Figure 7B). The gene discussed is PSME2; the disease is neoplasm.