ArticleTranslational lung cancer research2025
Assessing the clinical impact of severe lung cancer on non-small cell lung cancer: a single-center retrospective study.
Article in Translational lung cancer research, 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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Abstract
Background: Severe lung cancer (SLC) refers to patients with performance status (PS) ranging from 2 to 4, who may show improvement through the resolution of life-threatening but treatable factors, including comorbidities, tumor-related complications, and treatment-related advanced events. This concept has gained international expert consensus but remains underexplored, especially in the context of non-small cell lung cancer (NSCLC). This study specifically aims to clarify the association between critical status (CS), SLC and survival outcomes, providing insight into the clinical significance of SLC in NSCLC management. Methods: The retrospective study enrolled 254 NSCLC patients from the First Affiliated Hospital of Guangzhou Medical University. These patients were divided into three groups: stable population group, SLC, and non-SLC. Kaplan-Meier method and log-rank test were used to estimate overall survival (OS, primary endpoint). Cox regression analyses were performed to identify variables associated with OS. Additionally, correlation analysis was conducted to explore relationships between various variables and the progression of CS. Results: Sixty-one (24.0%) out of 254 patients met initial CS during their clinical course. Forty-one (67.2%) out of 61 patients recovered after definite therapy, identified as SLC. Median follow-up was 19.4 months. No significant difference was observed in baseline characteristics between stable population and those who met CS. Developing CS was independent risk factor related to OS after cox regression analyses [hazard ratio (HR), 21.9; 95% confidence interval (CI): 6.6-73.8; P<0.001]. Both SLC (HR, 5.4; 95% CI: 1.2-24.3; P=0.03) and non-SLC (HR, 101.2; 95% CI: 23.2-441.6; P<0.001) were also independently associated with worse OS. The median OS of CS population (44.3 months; 95% CI: 20.2-68.5) was significantly worse than that of the stable population (P<0.001). Among patients who developed CS, SLC had a significantly longer median OS compared with non-SLC (P<0.001). Survival was significantly worse in the SLC population compared to the stable population (P=0.01). Correlation analysis showed a significant negative correlation between supportive therapy and CS progression. Significant differences were observed between the SLC and non-SLC groups regarding gender distribution (P=0.03) and the use of first-line ICI-based therapy (P=0.02). Conclusions: The occurrence of initial CS significantly impairs OS in NSCLC patients. However, therapeutic interventions targeting the underlying causes of SLC can improve OS. These findings underscore the importance of early identification and management of CS in NSCLC patients. Further well-designed studies are warranted to validate these results and explore optimal treatment strategies for this patient population.
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