ArticleThoracic cancer2023
Genetic dissection of intratumor heterogeneity of PD-L1 expression in EGFR-mutated lung adenocarcinoma.
Article in Thoracic cancer, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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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
4 citing papers in PubMed, 6 citations in OpenAlex.
- PD-L1 Expression and Histopathological Features in EGFR-Mutated Non-Small Cell Lung Cancer: Implications for Immune Checkpoint Inhibitors After EGFR-Tyrosine Kinase Inhibitors Resistance.Thoracic cancer · 2026Article
- A PD-L1-Targeted Probe Cy5.5-A11 forACS omega · 2024Article
- Heterogeneity in PD-L1 expression between primary and metastatic lymph nodes: a predictor of EGFR-TKI therapy response in non-small cell lung cancer.Respiratory research · 2024Article
- Genetic dissection of intratumor heterogeneity of PD-L1 expression in EGFR-mutated lung adenocarcinoma.Thoracic cancer · 2023Article
Corrections and comments
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Authors and funding
7 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In this study, we investigated the association between PD-L1 expression in tumor cells and underlying genetic mutations, which was analyzed in detail using laser microdissection and next-generation sequencing analysis. To investigate whether driver mutations are involved in the background of PD-L1 expression, the EGFR major activating mutation was selected as the most frequent driver mutation. Surgical resection specimens were used to extract sufficient amounts of nucleic acids for analysis, and the high tumor proportion score (TPS:100%) and low (TPS: 0%) PD-L1-expressing parts of the tumor were each laser microdissected to examine the association between PD-L1 expression heterogeneity and genetic mutations within the same tumor. The association between PD-L1 heterogeneity and gene mutations within the same tumor was investigated. Analysis showed no association between PD-L1 expression heterogeneity and genetic variants, which were found to be almost identical. However, PD-L1 expression was found to be associated with the number of tumor infiltrating lymphocytes (TILs) present in the tumor, which may be related to whether or not lymphocytes can infiltrate into the tumor depending on the tumor histological type (solid pattern, lepidic pattern, etc.) and other factors.
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Registered trials
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