POLE and cervical squamous intraepithelial neoplasia: Using the method we developed previously for TEI detection [5], we confirmed that MSI tumors had significantly more somatic TEIs than other tumors (P = 0.050 for MSI vs. POLE-mutant and CIN tumors combined, Wilcoxon rank sum test), whereas POLE-mutant and CIN tumors were not significantly different (P = 0.117, Wilcoxon rank sum test).