For the sarcomas, the expression level of SMC4 was related to the infiltration levels of B cells (r = 0.182, P = 4.65e-03) and CD8+T cells (r = 0.186, P = 3.91e-03), negatively related to the infiltration levels of CD4+ T cell (r = −0.218, P = 7.00e-04) and macrophage (r = −0.14, P = 3.18e-02) (Figure 4A). The gene discussed is CD4; the disease is sarcoma.