Cited by 133Lung Cancer Research StudiesCancer Immunotherapy and BiomarkersLung Cancer Diagnosis and Treatment

Evaluation of CTLA-4 expression and relevance as a novel prognostic factor in patients with non-small cell lung cancer

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Salvi, Sandra, Fontana, Vincenzo, Boccardo, Simona, Merlo, Domenico Franco, Margallo, Edoardo, Laurent, Stefania, Morabito, Anna, Rijavec, Erika +6 more·2012·Cancer Immunology Immunotherapy

Abstract

The role of CTLA-4 in negative regulation of T-cell mediated immune response is particularly well established. Much less is known about its expression and function in tumour cells, and to our knowledge, no data are available on its possible impact on prognosis of NSCLC patients. We investigated CTLA-4 expression and prognostic role in 81 patients with radically resected stage I-III NSCLC. The analysis was performed by tissue microarray immunohistochemistry, and the median H-score of 20 was used as a threshold to define CTLA-4 overexpressing tumours. Correlation with standard prognostic factors was performed by using absolute and relative fold change indexes. Hazard ratios (HR) and corresponding 95% confidence limits (95% CL) were computed through the Cox model. A higher frequency of CTLA-4 overexpression (>20) was found in non-squamous than in squamous NSCLC (52.8 vs. 35.7%) and in Ki67 ≤ 15 expressing tumours, as compared to those with Ki67 > 15 (51.5 vs. 38.7%). A reduced death rate was found in CTLA-4 overexpressing tumours (HR = 0.60, 95% CL = 0.28/1.23), and a further decrease was observed when considering tumours with CTLA-4 > 20 and Ki67 ≤ 15, in comparison with tumours with CTLA-4 ≤ 20 and Ki67 > 15 (HR = 0.41; 95% CL = 0.15/1.13). Our observational and exploratory study provides a first and promising indication for an independent prognostic effect of CTLA-4 overexpression in radically resected NSCLC. We presume that this effect relies on modulation of the interaction of microscopic disease with CTLA-4-ligands expressing cells leading to NSCLC cell death.

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Authors
Salvi, S., Fontana, V., Boccardo, S., Merlo, D. F., Margallo, E., Laurent, S., Morabito, A., Rijavec, E., Dal Bello, M. G., Mora, M., Ratto, G. B., Grossi, F., Truini, M., & Pistillo, M. P.
Affiliations
Ospedale Policlinico San Martino (IT)
Corresponding author
Pistillo, Maria Pia
Venue
Cancer Immunology Immunotherapy
Published
2012-02-09
Volume
61
Issue
9
Pages
1463-1472
ISSN
  • 0340-7004 (ISSN-L)
  • 1432-0851
OpenAlex
W2008062915
Cited by
133
References
39
Citations by year
2026: 1 · 2025: 9 · 2024: 10 · 2023: 9 · 2022: 10 · 2021: 7 · 2020: 19 · 2019: 7 · 2018: 17 · 2017: 12 · 2016: 8 · 2015: 10 · 2014: 8 · 2013: 6
FWCI
3.79
Type
journal article
Language
en
Open access
Locations
  • Cancer Immunology Immunotherapy (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • IrInSubria (University of Insubria) (submittedVersion)
Funders
Alleanza Contro il Cancro
Topics
  • Health Sciences › Medicine › Oncology › Lung Cancer Research Studies
  • Health Sciences › Medicine › Oncology › Cancer Immunotherapy and Biomarkers
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Lung Cancer Diagnosis and Treatment
Keywords
CTLA-4, non-small cell lung cancer, prognostic factors, Ki-67, lung squamous cell carcinoma, radical resection, survival
MeSH terms
Aged, Aged, 80 and over, Carcinoma, Non-Small-Cell Lung, Female, Humans, Immunohistochemistry, Lung Neoplasms, Male, Middle Aged, Prognosis, Prospective Studies, Survival Analysis, CTLA-4 Antigen

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