Study on PD-1 inhibitor combined with recombinant human endostatin and chemotherapy followed by IMRT in the treatment of advanced NSCLC

Although chemotherapy, targeted therapy, and antiangiogenic drugs have become the cornerstones of treatment for advanced non-small-cell carcinoma (NSCLC) in clinical practice, the emergence of immune checkpoint inhibitors (such as PD-1 inhibitors) in recent years has also provided new options for the treatment of NSCLC. To explore whether PD-1 inhibitors combined with recombinant human endostatin and chemotherapy followed by IMRT have a certain curative effect in the treatment of advanced NSCLC. We retrospectively analyzed 47 patients with stage IIIB, IIIC, and IV NSCLC admitted to our hospital from August 2022 to June 2023. According to the treatment method, the patients were divided into an observation group (24 cases) and a control group (23 cases). The control group only received recombinant human endostatin 105 g and chemotherapy followed by IMRT; the observation group received domestic PD-1 inhibitors, 200 mg, and chemotherapy followed by IMRT on the basis of the treatment plan of the control group. After treatment, the objective response rate (ORR), disease control rate, overall survival, progression-free survival (PFS), duration of response, and incidence of adverse reactions were compared. After treatment, the ORR and disease control rate of the observation group were higher than those of the control group; compared with the control group, the PFS, overall survival, and duration of response period of the observation group were longer (P < .05); the incidence of adverse reactions in the observation group was significantly lower than that in the control group (P < .05). After chemotherapy, the CD3+ and CD4+ index of the observation group was significantly increased, the CD3+ CD8+ was slightly lower than that of the control group, without statistical significance, and the ratio of CD4/CD8 was higher than that of the control group, and the interleukin-2 index was significantly better than that of the routine group, P < .05. PD-1 inhibitor combined with recombinant human endostatin and chemotherapy followed by IMRT in the treatment of advanced NSCLC can significantly improve the ORR and prolong the PFS of patients, and the adverse reactions are controllable. The results of our study may provide help for the treatment strategies of patients with refractory advanced NSCLC, and are worthy of promotion and use.