Abstract:Objective To investigate the diagnostic value of P16/Ki-67 double staining combined with claudin 4 (CLDN4) detection in high grade cervical intraepithelial neoplasia (HSIL).Methods Retrospective analysis was made on 32 cervical tissue samples from patients with low grade intraepithelial neoplasia (LSIL), HSIL, and chronic cervicitis who were treated in our hospital from April 2020 to March 2021 and were pathologically diagnosed as low grade intraepithelial neoplasia (LSIL), HSIL, and chronic cervicitis. All patients underwent colposcopy biopsy under direct vision, and all cervical cut samples were detected by P16/Ki-67 double staining and CLDN4. The results of P16/Ki-67 double staining diagnosis and pathological examination were compared. The results of CLDN4 diagnosis and pathological examination were compared. The results of P16/Ki-67 double staining, CLDN4 combined diagnosis and pathological examination were compared. To analyze the diagnostic value of P16/Ki-67 double staining combined with CLDN4 in cervical HSIL.Results P16/Ki-67 double staining was used for the diagnosis of cervical HSIL. There were 27 positive patients and 52 negative patients who were consistent with the results of pathological biopsy. Through the consistency test, the two diagnostic methods were generally consistent (κ = 0.622, P = 0.000). CLDN4 is used for the diagnosis of cervical HSIL. There are 25 positive patients and 51 negative patients who are consistent with the results of pathological biopsy. Through the consistency test, the two diagnostic methods are generally consistent (κ = 0.552, P = 0.000). P16/Ki-67 double staining and CLDN4 combined to diagnose cervical HSIL, 30 positive patients were consistent with pathological biopsy results, and 62 negative patients were consistent with pathological biopsy results. Through consistency test, the two diagnostic methods were consistent (κ = 0.906, P = 0.000). The analysis of the receiver operating characteristic curve (ROC) of the subjects showed that the sensitivity of P16/Ki-67 double staining, CLDN4 and their combination to the diagnosis of cervical HSIL was 84.38% (95% CI: 0.665, 0.941), 78.13% (95% CI: 0.596, 0.901), 93.75% (95% CI: 0.778, 0.989), specificity was 81.25% (95% CI: 0.692, 0.895), 79.69% (95% CI: 0.674,0.883), 96.88% (95% CI: 0.882, 0.995), and the area under the curve (AUC) was 0.828 (95% CI: 0.738, 0.897), 0.789 (95% CI: 0.694, 0.866), 0.953 (95% CI: 0.890, 0.986), respectively.Conclusion P16/Ki-67 double staining combined with CLDN4 detection has a high diagnostic efficiency for cervical HSIL.