Notable proportions of PIK3CA:p.E453Q and ARID1A:p.Q487SfsTer132 mutations, previously described in colorectal or endometrial carcinomas, were detected in ca. planoepitheliale tumors here but are not canonically linked to cervical cancer pathogenesis (CIViC, OncoKB). This evidence concerns the gene ARID1A and endometrial carcinoma.