We compared the expression of CTLA4 and PDCD1 among molecular subtype and normal sample and found that the expressions of CTLA4 and PDCD1 in the normal sample were lower than those in the tumor sample, while in the C1 subtype, the expressions of these two genes were higher than those in the C2 subtype in the tumor sample (Figures 9(b) and 9(c)). The gene discussed is CTLA4; the disease is neoplasm.