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Article Abstract
Objective: This meta-analysis aimed to evaluate the efficacy and safety of combining pemetrexed and platinum with or without pembrolizumab for the treatment of advanced non-small-cell lung cancer (NSCLC).
Methods: A systematic search of PubMed, Embase, Cochrane Library, and Web Of Science databases was conducted to identify studies comparing pemetrexed and platinum with or without pembrolizumab in advanced NSCLC. Raw data were extracted from eligible studies to calculate Hazard Ratios (HR) for Progression-Free Survival (PFS) and Overall Survival (OS), as well as rates of adverse events of all grades and those of Grade 3 or higher.
Results: Eight studies with 1639 patients occurred advanced NSCLC included. The group receiving pembrolizumab in combination with pemetrexed and platinum showed significant benefits in terms of OS (HR 0.63; 95% CI 0.54-0.73; p < 0.00001) and PFS (HR:0.64; 95% CI 0.48-0.85; p = 0.002) compared to the group receiving pemetrexed and platinum alone. However, this benefit was accompanied by a higher incidence of Grade 3 or higher adverse events (OR: 1.55; 95% CI 1.24-1.95; p = 0.0001).
Conclusion: The combination of pemetrexed and platinum with pembrolizumab is recommended as a first-line treatment option for advanced NSCLC due to its significant efficacy benefits. However, the increased risk of Grade 3 or higher adverse events suggests the need for careful consideration and assessment when considering this regimen for second-line or subsequent therapy.
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