Cervical cancer is the fourth most common cancer among women worldwide. At present, patients with cervical cancer are treated with radical hysterectomy and pelvic lymphadenectomy or chemoradiation. To improve the prognosis of cervical cancer patients, novel immunotherapeutic strategies need to be developed. Now there are some clinical phase I/II trials ongoing to assess the effects of ipilimumab, pembrolizumab and nivolumab in advanced cervical cancer,but information on the clinical significance of PD-L1 expression in cervical cancer is largely lacking.In this study, the investigator's primary objective:~To analyse if the change of specific immune response will correlate with clinical effect of advanced cervix cancer after radio-chemotherapy.~To evaluate the specific immune response throughout monitor the change of PD-1 in CD8 T cell and CD4 T cell and Treg cell in blood at baseline, before first brachytherapy and before the last brachytherapy in the advanced Cervix Cancer patients.~To use IHC technique to monitor the change of PD-L1, CD68,CD8,CD4,PD1 and Treg expression in biopsy at baseline, before first brachytherapy and before the last brachytherapy in the advanced Cervix Cancer patients.~To detect the change of TCR repertoire and TMB at baseline, before first brachytherapy and before the last brachytherapy in the advanced Cervix Cancer patients.
Perspectives:~To analyse if the change of specific immune response will correlate with clinical effect of advanced cervix cancer after radio-chemotherapy.~To evaluate the specific immune response throughout monitor the change of the programmed death-1(PD-1) in CD8 T cell and CD4 T cell and Treg cell in blood at baseline, before first brachytherapy and before the last brachytherapy in the advanced Cervix Cancer patients.~To use immunohistochemistry (IHC) technique to monitor the change of programmed death-ligand 1 (PD-L1),CD68,CD8,CD4,PD1 and Treg expression in biopsy at baseline, before first brachytherapy and before the last brachytherapy in the advanced Cervix Cancer patients.~To detect the change of T cell receptor(TCR) repertoire and Tumor mutation burden (TMB) at baseline, before first brachytherapy and before the last brachytherapy in the advanced Cervix Cancer patients.