Abstract:Objective To explore the value of survivin combined with CXC chemokine ligand 13 (CXCL13) in evaluating the grade of cervical intraepithelial neoplasia (CIN).Methods The 101 paraffin samples of CIN tissues surgically removed in our hospital from January 2020 to January 2023 were collected and included as the study group, among which 38 paraffin samples were of CIN3 (high-grade cervical lesions), 42 CIN2 (high-grade cervical lesions), and 21 CIN1 (low-grade cervical lesions). Another 101 paraffin specimens of normal cervical tissues from patients undergoing hysterectomy due to uterine fibroids were selected as the control group. The protein expressions of survivin and CXCL13 in different cervical tissue samples were determined by immunohistochemistry. The factors affecting the grade of CIN lesions and the value of survivin and CXCL13 in evaluating the grade of CIN lesions were analyzed.Results The positive expression rate of survivin in CIN3 tissues was higher than that in CIN1/2 and normal cervical tissues (P < 0.05), and the positive expression rate of CXCL13 in CIN3 tissues was lower than that in CIN1/2 and normal cervical tissues (P < 0.05). The positive expression rate of survivin in CIN2 tissues was higher than that in CIN1 and normal cervical tissues (P < 0.05), and the positive expression rate of CXCL13 in CIN2 tissues was lower than that in CIN1 and normal cervical tissues (P < 0.05). The positive expression rate of survivin in CIN1 tissues was higher than that in normal cervical tissues (P < 0.05), and the positive expression rate of CXCL13 in CIN1 tissues was lower than that in normal cervical tissues (P < 0.05). There was no difference in age, body mass index, year of education, proportion of patients with more than one sex partner, gravidity, parity, number of abortions, age at first pregnancy, proportion of patients with a history of pelvic inflammation, proportion of patients with a history of vaginitis, SBP, DBP, levels of TG, TC, serum creatinine and uric acid, WBC count and PLT count among patients with different grades of CIN lesions (P > 0.05). The age at first sexual intercourse in the high-grade lesion group was lower than that in the low-grade lesion group (P < 0.05), and the percentages of oral contraceptive use, high-risk HPV infection, P16 positivity, and Ki-67 positivity in the high-grade lesion group were higher than those in the low-grade lesion group (P < 0.05). Multivariable stepwise Logistic regression analysis showed that oral contraceptive use [O^R = 3.114, (95% CI: 1.281, 7.569) ], high-risk HPV infection [O^R = 5.613, (95% CI: 2.309, 13.640) ], survivin positivity [O^R = 3.435, 95% CI: 1.413, 8.348) ] and CXCL13 positivity [O^R = 3.347, (95% CI: 1.377, 8.134) ] were the factors affecting the grade of CIN lesions (P < 0.05). The receiver operating characteristic (ROC) curve analysis demonstrated that the sensitivities of survivin, CXCL13 and their combination for evaluating the grade of CIN lesions were 72.50% (95% CI: 61.20%, 81.61%), 67.50% (95% CI: 56.00%, 77.30%), and 81.25% (95% CI: 70.65%, 88.79%), with the specificities being 71.43% (95% CI: 47.69%, 87.81%), 76.19% (95% CI: 52.45%, 90.88%), and 90.48% (95% CI: 68.17%, 98.33%), and the AUCs being 0.726 (95% CI: 0.629, 0.822), 0.712 (95% CI: 0.604, 0.819) and 0.898 (95% CI: 0.834, 0.963).Conclusions Survivin and CXCL13 are related to the grade of CIN lesions, and the positive expression rate of survivin increases while that of CXCL13 decreases with the progression of CIN lesions. The combination of survivin and CXCL13 is effective in evaluating the grade of CIN lesions and holds certain clinical value.