In addition, 10 genes, i.e., AQP1, P1, C4A, AQP3, BSG, CD44, CD151, LU, FUT2, and SEMA7A, were associated with the poor prognosis in three types of cancers, i.e., KIRC, LGG and UVM, in the TCGA dataset (Figure 3A). This evidence concerns the gene C4A and cancer.