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Recently published randomized controlled trials (RCTs) showed improved overall survival (OS) and progression-free survival (PFS) with the combination of immunotherapy and chemotherapy as compared to chemotherapy alone in advanced non-small cell lung cancer (NSCLC). We aimed to provide a systematic review and meta-analysis of RCTs regarding the efficacy and safety of immunotherapy and chemotherapy combinations for advanced NSCLC. On December 23 rd , 2021, we searched databases for RCTs that reported PFS and OS as primary outcomes. We included 11 RCTs with 6,386 patients (3,850 in the combination therapy group and 2,536 in the chemotherapy group). Combination therapy was associated with an improvement in PFS (HR: 0.60; 95% CI: 0.54, 0.66; P &lt; 0.00001) andOS (HR: 0.77; 95% CI: 0.68, 0.87; P ≤ 0.0001), compared to chemotherapy. There were no significant differences between both groups in terms of treatment-related adverse events (TRAEs) (RR: 1.07; 95% CI: 0.99, 1.16; P = 0.09). The combination of immunotherapy and chemotherapy as first-line treatment for advanced NSCLC significantly improved PFS and OS compared to chemotherapy alone without a significant increase in the overall TRAEs.

expert review of anticancer therapy

The role of immunotherapy plus chemotherapy versus chemotherapy alone as first-line treatment for advanced non-small cell lung cancer: an updated systematic review and meta-analysis of randomized controlled trials