Cited by 111Cancer Immunotherapy and BiomarkersLung Cancer Treatments and MutationsLung Cancer Research Studies

PD-L1 expression in non-small cell lung cancer: correlations with genetic alterations

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Scheel, Andreas H., Ansén, Sascha, Schultheis, Anne M., Scheffler, Matthias, Fischer, Rieke N., Michels, Sebastian, Hellmich, Martin, George, Julie +9 more·2016·OncoImmunology

Abstract

Inhibition of the PD-1/PD-L1 pathway may induce anticancer immune responses in non-small cell lung cancer (NSCLC). Two PD-L1 immunohistochemistry (IHC) assays have been approved as companion diagnostic tests for therapeutic anti-PD-1 antibodies. However, many aspects of PD-L1 prevalence and association with genetically defined subtypes have not been addressed systematically. Here, we analyzed PD-L1 expression in 436 genetically annotated NSCLC specimens enriched for early stages using PD-L1 antibody 5H1. Expression of PD-L1 was detected in the tumor cells (TC) (34% of cases) and in associated immune cells (IC) (49%) across all stages of NSCLC, either alone or in combination. PD-L1 IHC-positive TC, but not IC showed significantly higher PD-L1 RNA expression levels. Expression in TC was associated with TP53, KRAS and STK11 mutational status in adenocarcinomas (AD) and with NFE2L2 mutations in squamous cell carcinomas (SQ). No correlations with histological subtype, clinical characteristics and overall survival were found. The presence of PD-L1-positive IC was significantly associated with patients' smoking status in AD. The findings are in agreement with the emerging concept that tumors with high mutational burden are more likely to benefit from immunotherapy, since TP53 and KRAS mutations are linked to smoking, increased numbers of somatic mutations and expression of neoantigens. Current clinical studies focus on stage IIIB and IV NSCLC; however, PD-L1 expression occurs in earlier stages and might be a predictive biomarker in clinical trials testing (neo-) adjuvant strategies.

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Authors
Scheel, A. H., Ansén, S., Schultheis, A. M., Scheffler, M., Fischer, R. N., Michels, S., Hellmich, M., George, J., Zander, T., Brockmann, M., Stoelben, E., Groen, H., Timens, W., Perner, S., von Bergwelt-Baildon, M., Büttner, R., & Wolf, J.
Affiliations
  • University Hospital Cologne (DE)
  • University of Cologne (DE)
  • Kliniken der Stadt Köln (DE)
  • University Medical Center Groningen (NL)
  • Research Center Borstel - Leibniz Lung Center (DE)
Corresponding author
  • Scheel, Andreas H.
  • Ansén, Sascha
Venue
OncoImmunology
Published
2016-03-16
Volume
5
Issue
5
Pages
e1131379
ISSN
  • 2162-4011 (ISSN-L)
  • 2162-402X
OpenAlex
W2323356988
Cited by
111
References
41
Citations by year
2026: 2 · 2025: 6 · 2024: 3 · 2023: 6 · 2022: 14 · 2021: 16 · 2020: 16 · 2019: 13 · 2018: 21 · 2017: 14
FWCI
8.63
Type
journal article
Language
en
Open access
Locations
  • OncoImmunology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Kölner Universitäts PublikationsServer (Universität zu Köln) (publishedVersion)
  • University of Groningen research database (University of Groningen / Centre for Information Technology) (submittedVersion)
Funders
Universität zu Köln
Topics
  • Health Sciences › Medicine › Oncology › Cancer Immunotherapy and Biomarkers
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Lung Cancer Treatments and Mutations
  • Health Sciences › Medicine › Oncology › Lung Cancer Research Studies
Keywords
PD-L1 expression, non-small cell lung cancer, TP53 mutation, KRAS mutation, STK11 mutation, NFE2L2 mutation, tumor-infiltrating immune cells, tumor mutational burden, smoking, predictive biomarkers, anti-PD-1 therapy, early-stage lung cancer, adenocarcinoma, squamous cell carcinoma, neoantigens

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