HOXC4 and cancer: In the meantime, the combined TCGA and GTEx databases revealed abnormal overexpression of HOXC4 in 21 types of cancer, including ACC, BLCA, BRCA, CESC, CHOL, ESCA, GBM, HNSC, KICH, KIRP, LGG, LIHC, LUAD, LUSC, OV, PAAD, PRAD, STAD, TGCT and UCS, which suggests that HOXC4 may function in carcinogenesis as an oncogene.