Abstract:Objective To investigate the clinical efficacy of combination of three-dimensional brachytherapy, platinum-based monochemotherapy, and tislelizumab in managing locally advanced cervical cancer.Methods A total of 102 patients with locally advanced cervical cancer, treated at our hospital from January 2021 to January 2022, were enrolled in this study. They were randomly assigned into the control group (n = 51) and the observation group (n = 51) using a random number table method. The control group received three-dimensional brachytherapy combined with platinum-based monochemotherapy, while the observation group additionally received tislelizumab alongside the treatment in the control group. Both groups were treated for 6 weeks. The clinical efficacy and tumor volume, immune function (CD3+, CD4+, CD8+), and tumor marker levels [CA125 (carbohydrate antigen 125), SCCA (squamous cell carcinoma antigen), AFP (alpha-fetoprotein) ] before and after treatment were compared between the two groups. The adverse reactions were also recorded. All patients were followed up for 2 years to compare the overall survival (OS) and survival rates between the two groups.Results The overall effective rate in the observation group was higher than that in the control group (P < 0.05). The differences in CD3+, CD4+, and CD8+ levels before and after treatment were all smaller in the observation group than in the control group (P < 0.05), while the differences in CA125, SCCA, and AFP levels were all greater in the observation group than in the control group (P < 0.05). There was no statistically significant difference in the overall incidence of adverse reactions between the observation group and the control group (P > 0.05). After a 2-year follow-up, the OS of the observation group and that of the control group were 22.35 (21.34, 23.36) and 19.57 (18.02, 21.11) months, respectively. The survival rates of the observation group and the control group were 76.47% (39/51) and 54.90% (28/51), respectively. The survival curve of the observation group was better than that of the control group (P < 0.05).Conclusion The combination of three-dimensional brachytherapy, platinum-based monochemotherapy, and tislelizumab can improve clinical efficacy and extend survival in patients with locally advanced cervical cancer.