ArticleJTO clinical and research reports2025
A Prospective Exploratory Study of Functional Immunity Assessed by Pretreatment Interferon Gamma Release Assay in Relation to Different Systemic Therapies in Patients With Advanced-Stage NSCLC.
Article in JTO clinical and research reports, 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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8 authors.
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Abstract
Introduction: Predictive markers for chemotherapy and immunotherapy response in advanced NSCLC are limited, and no objective tool exists to assess immune function, which is critical for treatment outcomes. This study prospectively evaluated the interferon gamma (IFN-γ) release assay (IGRA) as a potential predictor of treatment response and a tool for assessing immune function. Methods: We enrolled patients with stage IV NSCLC undergoing first-line chemotherapy, EGFR tyrosine kinase inhibitor (TKI) therapy, or any line of single-agent immunotherapy, alongside stage I controls. Peripheral blood samples were collected pre- and post-treatment for IGRA testing using the QuantiFERON-TB Gold In-Tube (QFT-GIT) kit. Phytohemagglutinin-stimulated IFN-γ (PSIG) responses were measured by both QFT-GIT and in-house enzyme-linked immunosorbent assay, with stage IV patients categorized into high- and low-PSIG response groups based on median pretreatment values. Results: A total of 117 patients were analyzed (32 surgery, 30 EGFR TKI, 25 chemotherapy, 30 immunotherapy). The median PSIG response was significantly higher in stage I patients than stage IV (1420 pg/mL versus 960 pg/mL; Conclusions: Patients with advanced-stage NSCLC exhibited reduced lymphocyte function, and patients with driver mutations correlated to less exhausted lymphocyte. IGRA demonstrates potential as a clinical tool for assessing immune function in these patients.
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