Background: The synergistic effects of immunotherapy and antiangiogenic therapy in advanced non-small cell lung cancer (NSCLC) have been reported in both preclinical and clinical trials. Herein, we evaluated the preliminary efficacy and safety of combined immunotherapy and antiangiogenic therapy in patients with previously treated advanced NSCLC in a real-world setting.
Methods: We conducted a 2-center, retrospective study of previously treated advanced NSCLC patients who received any anti-programmed death-1 antibody combined with antiangiogenic agent between May 2018 and March 2020.
Results: In total, 57 patients were included in this study, and the objective response rate and disease control rate were 19.3% and 63.2%, respectively. The median progression-free survival (PFS) was 4.2 months (95% confidence interval [CI]: 3.2-5.2 months). Bone metastases (odds ratio [OR] not available; P < .01) and ≥ 3 treatment lines (OR 6.8; 95% CI: 1.6-29.6; P < .05) were independent negative predictors of objective response. Additionally, liver metastases (hazard ratio [HR] 3.7; 95% CI: 1.6-8.5; P < 0.01), poor performance status score (PS) (HR 3.4; 95% CI: 1.6-7.5; P < 0.01) and ≥ 3 treatment lines (HR 3.5; 95% CI: 1.7-7.4; P < 0.01) were found to be negative predictors of PFS. Eighty-nine percent of the patients experienced an adverse event.
Conclusions: Metastatic sites (bone and liver), ≥3 treatment lines and poor PS were potential negative predictors of the efficacy of immunotherapy combined with antiangiogenic therapy for treating NSCLC. Further investigations and randomized controlled trials are needed.
Keywords: Antiangiogenic therapy; Immunotherapy; Non–small cell lung cancer (NSCLC); Retrospective study.
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