At the same time, the analysis of immune characteristics between C3 and C4 showed (Figures 7C–E) that the level of immune cell infiltration and immune function activation of C3 tumor with better prognosis was higher than that of C4, and the expression level of C3 immune checkpoint related gene lymphocyte-activation gene 3 (LAG3) was higher, suggesting that C3 tumor was more suitable for immunotherapy. This evidence concerns the gene C4A and neoplasm.