ERBB4 and cervical cancer: A TCGA study that performed hierarchical clustering in cervical cancer9 suggested the classification of cervical cancer cases into three groups: “keratin‐high,” characterized by high expression of KRT13, SERPINB5, SERPINB13, TP63, KRT6A‐C, FAT2, seven SPRRs, ZNF750, and APOBEC3A; “keratin‐low,” characterized by the expression of TGFB1, TGFB2, and EPHB2; and “adenocarcinoma,” characterized by the expression of EPCAM, CLDN3, ERBB4, RAB17, and KRT18.