Observational studyThoracic cancer2024
Efficacy of immune checkpoint inhibitors according to programmed cell death-ligand 1 expression in patients with non-small cell lung cancer and brain metastasis: A real-world prospective observational study.
Observational study in Thoracic cancer, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
What it found
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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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Who cites it
5 citing papers in PubMed.
- The brain-lung immunotherapy prognostic (BLIP) Score: a novel robust tool for prognostication in non-small cell lung cancer patients with brain metastases.British journal of cancer · 2026Article
- Impact of baseline brain metastases on survival and CNS progression in NSCLC patients treated with immune checkpoint inhibitors in real-world studies: a systematic review and meta-analysis.Translational lung cancer research · 2026Article
- Article
- Study on the efficacy of IFN-γ- and sPD-1-overexpressing BMSCs in enhancing immune effects for the treatment of lung adenocarcinoma.Frontiers in immunology · 2025Article
- Observational
Corrections and comments
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Authors and funding
20 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
introductionStudies have shown the antitumor efficacy of immune checkpoint inhibitors (ICI) in patients with non-small cell lung cancer (NSCLC) and brain metastases (BM). However, it is unclear whether the efficacy of ICI is similar between patients with and without BM. It is yet unclear whether the efficacy of ICI in patients with BM increases with higher levels of programmed cell death-ligand 1 (PD-L1) expression, as observed in patients without BM.
methodsWe compared the outcomes of ICI treatment between patients with and without BM using a cohort containing 1741 prospectively enrolled patients with lung cancer. We investigated whether there were differences in the outcomes of ICI based on PD-L1 expression levels between these patients.
resultsWe enrolled 240 patients with NSCLC with or without BM who were treated with ICI or both chemotherapy and ICI. There were no significant differences in overall survival (OS) between all patients with or without BM (p = 0.489). However, OS was significantly shorter in patients with BM than in those without in the PD-L1 ≥ 50% group (16.5 M vs. 30.6 M, p = 0.003) but not in the PD-L1 ≥ 1% or negative group. BM was an independent poor prognostic factor for OS (hazard ratio: [95% confidence interval], 2.045; [1.058-3.953], p = 0.033) in the PD-L1 ≥ 50% group.
conclusionOur study indicated that the outcomes of patients with or without BM treated with ICI were not significantly different. The efficacy of ICI in patients with PD-L1 expression ≥50% would be lower in patients with BM than in those without.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.