Skip to main content
Top
Published in: BMC Cancer 1/2019

Open Access 01-12-2019 | NSCLC | Research article

Prediction of response to pemetrexed in non-small-cell lung cancer with immunohistochemical phenotyping based on gene expression profiles

Authors: S. Visser, J. Hou, K. Bezemer, L. L. de Vogel, J. P. J. J. Hegmans, B. H. Stricker, S. Philipsen, J. G. J. V. Aerts

Published in: BMC Cancer | Issue 1/2019

Login to get access

Abstract

Background

Palliative pemetrexed-based chemotherapy remains a standard of care treatment for the majority of patients with advanced non-squamous non-small-cell lung cancer (NSCLC). Currently, no predictive markers for pemetrexed treatment are available.

Methods

Resected tumour samples from pemetrexed-naïve NSCLC patients were collected. Gene expression profiling with respect to predicted sensitivity to pemetrexed classified predicted responders (60%) and non-responders (40%) based on differentially expressed genes encoding for pemetrexed target enzymes. Genes showing a strong correlation with these target genes were selected for measurement of corresponding protein expressions by immunohistochemical (IHC) staining. A semi-quantitative IHC scoring method was applied to construct a prediction model for response to pemetrexed. A retrospective cohort of patients with advanced NSCLC treated with first-line pemetrexed-based chemotherapy was used for external validation.

Results

From ninety-one patients resected tumour samples were collected. The majority of patients had early or locally advanced NSCLC (96.3%). Gene expression profiling revealed five markers, which mRNA levels strongly correlated to pemetrexed target genes mRNA levels: TPX2, CPA3, EZH2, MCM2 and TOP2A. Of 63 (69%) patients IHC staining scores of these markers were obtained, which significantly differed between predicted non-responders and responders (P < 0.05). The optimized prediction model included EZH2 (OR = 0.56, 95% CI 0.35–0.90) and TPX2 (OR = 0.55, 95% CI 0.30–1.01). The model had a sensitivity of 86.8%, specificity of 63.6% and showed a good ability to distinct between responders and non-responders (C-index 0.86).
In the external study population (N = 23) the majority of patients had metastatic NSCLC (95.7%). Partial response (PR) was established in 26.1%. The sensitivity decreased drastically to 33.3%, with a specificity of 82.4% and a C-index of 0.73.

Conclusions

Using external validation this prediction model with IHC staining of target enzyme correlated markers showed a good discrimination, but lacked sensitivity. The role of IHC markers as response predictors for pemetrexed in clinical practice remains questionable.
Appendix
Available only for authorised users
Literature
25.
go back to reference Shimizu T, Nakanishi Y, Nakagawa Y, Tsujino I, Takahashi N, Nemoto N, et al. Association between expression of thymidylate synthase, dihydrofolate reductase, and glycinamide ribonucleotide formyltransferase and efficacy of pemetrexed in advanced non-small cell lung cancer. Anticancer Res. 2012;32:4589–96 http://www.ncbi.nlm.nih.gov/pubmed/23060591. Accessed 18 Sep 2017.PubMed Shimizu T, Nakanishi Y, Nakagawa Y, Tsujino I, Takahashi N, Nemoto N, et al. Association between expression of thymidylate synthase, dihydrofolate reductase, and glycinamide ribonucleotide formyltransferase and efficacy of pemetrexed in advanced non-small cell lung cancer. Anticancer Res. 2012;32:4589–96 http://​www.​ncbi.​nlm.​nih.​gov/​pubmed/​23060591. Accessed 18 Sep 2017.PubMed
36.
go back to reference van Kruijsdijk RCM, Visseren FLJ, Boni L, Groen HJM, Dingemans AMC, Aerts JGJV, et al. Pemetrexed plus carboplatin versus pemetrexed in pretreated patients with advanced non-squamous non-small-cell lung cancer: treating the right patients based on individualized treatment effect prediction. Ann Oncol. 2016;27:1280–6. https://doi.org/10.1093/annonc/mdw154.CrossRefPubMed van Kruijsdijk RCM, Visseren FLJ, Boni L, Groen HJM, Dingemans AMC, Aerts JGJV, et al. Pemetrexed plus carboplatin versus pemetrexed in pretreated patients with advanced non-squamous non-small-cell lung cancer: treating the right patients based on individualized treatment effect prediction. Ann Oncol. 2016;27:1280–6. https://​doi.​org/​10.​1093/​annonc/​mdw154.CrossRefPubMed
Metadata
Title
Prediction of response to pemetrexed in non-small-cell lung cancer with immunohistochemical phenotyping based on gene expression profiles
Authors
S. Visser
J. Hou
K. Bezemer
L. L. de Vogel
J. P. J. J. Hegmans
B. H. Stricker
S. Philipsen
J. G. J. V. Aerts
Publication date
01-12-2019
Publisher
BioMed Central
Published in
BMC Cancer / Issue 1/2019
Electronic ISSN: 1471-2407
DOI
https://doi.org/10.1186/s12885-019-5645-x

Other articles of this Issue 1/2019

BMC Cancer 1/2019 Go to the issue
Webinar | 19-02-2024 | 17:30 (CET)

Keynote webinar | Spotlight on antibody–drug conjugates in cancer

Antibody–drug conjugates (ADCs) are novel agents that have shown promise across multiple tumor types. Explore the current landscape of ADCs in breast and lung cancer with our experts, and gain insights into the mechanism of action, key clinical trials data, existing challenges, and future directions.

Dr. Véronique Diéras
Prof. Fabrice Barlesi
Developed by: Springer Medicine