SynthesisFrontiers in medicine2025
Incidence of pneumonitis with CTLA-4 inhibitors in non-small cell lung cancer: a systematic review and meta-analysis.
Synthesis in Frontiers in medicine, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
6 authors.
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Abstract
Background: CTLA-4 inhibitors, such as tremelimumab and ipilimumab, are increasingly used in the treatment of non-small cell lung cancer (NSCLC). This meta-analysis aims to evaluate the incidence of pneumonitis associated with these inhibitors and explore potential differences between individual agents. Methods: A systematic search across three online databases identified 911 records. After screening for duplicates and irrelevant articles, nine studies with a total of 4,164 patients were included. Risk of bias was assessed using the Cochrane "Risk of Bias" tool. Pneumonitis incidence was analyzed using a random-effects model. Results: The overall incidence of any-grade pneumonitis was 4.0% [95% CI (2.2%, 5.8%)]. High-grade pneumonitis occurred in 1.6% [95% CI (0.5%, 2.6%)]. Subgroup analysis revealed that tremelimumab was associated with a higher incidence of both any-grade (8.0% vs. 2.0%) and high-grade (3.0% vs. 1.0%) pneumonitis compared to ipilimumab. In a comparison with a control group, patients receiving CTLA-4 inhibitors had a significantly higher incidence of any-grade pneumonitis [OR = 3.00, 95% CI (1.60, 5.64), Conclusion: This meta-analysis indicates that CTLA-4 inhibitors are associated with a higher incidence of pneumonitis in NSCLC patients, particularly with tremelimumab. These findings underline the importance of close monitoring for pneumonitis in patients receiving CTLA-4 inhibitors, especially tremelimumab, and suggest the need for further research into prevention and management strategies.
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