As shown in Fig. 1, PIK3CD was significantly elevated in 11 tumor types, including ESCA, HNSC, KIRC, KIRP, LAML, PAAD, SKCM, STAD, CHOL, STES, and TGCT, and significantly downregulated in 11 tumor types, including BLCA, BRCA, COAD, KICH, LIHC, LUAD, LUSC, OV, PRAD, THCA and UCEC. Here, PIK3CD is linked to neoplasm.