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Real-world evidence for pembrolizumab in non-small cell lung cancer: a nationwide cohort study. | LitMetric
Background : Based on favourable results from clinical trials, immune checkpoint inhibitors (ICI) have become the standard first line (1 L) systemic anticancer treatment (SACT) for advanced stage non-small cell lung cancer (NSCLC) without targetable mutations. We evaluate whether these results are generalizable to everyday clinical practice and compare overall survival (OS) of patients treated with ICI to a historical cohort of patients treated with chemotherapy and results from clinical trials.Methods : Our study comprised all advanced NSCLC patients initiating SACT in 2012-21 in Norway. Clinical characteristics and treatment information was retrieved from Norwegian Health Registries.Results : Survival for all 8416 advanced NSCLC patients treated with SACT increased concurrently with the gradual implementation of ICIs. Median OS of patients treated with 1 L pembrolizumab after 2017 was better (mono-/combination therapy: 13.8/12.8 months) than for patients treated with chemotherapy before 2017 (8.0 months). Although median OS for patients treated with pembrolizumab was lower in clinical practice than clinical trials (Keynote-024/189: 26.3/22.0 months), the survival benefit relative to chemotherapy was similar.Conclusion : Our nationwide study demonstrated a survival benefit over conventional chemotherapy of a similar magnitude as observed in clinical trials and confirms the effectiveness of pembrolizumab in routine clinical practice.
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