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Systematic analysis of transcriptome signature for improving outcomes in lung adenocarcinoma

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Abstract

Purpose

The updated guidelines highlight gene expression-based multigene panel as a critical tool to assess overall survival (OS) and improve treatment for lung adenocarcinoma (LUAD) patients. Nevertheless, genome-wide expression signatures are still limited in real clinical utility because of insufficient data utilization, a lack of critical validation, and inapposite machine learning algorithms.

Methods

2330 primary LUAD samples were enrolled from 11 independent cohorts. Seventy-six algorithm combinations based on ten machine learning algorithms were applied. A total of 108 published gene expression signatures were collected. Multiple pharmacogenomics databases and resources were utilized to identify precision therapeutic drugs.

Results

We comprehensively developed a robust machine learning-derived genome-wide expression signature (RGS) according to stably OS-associated RNAs (OSRs). RGS was an independent risk element and remained robust and reproducible power by comparing it with general clinical parameters, molecular characteristics, and 108 published signatures. RGS-based stratification possessed different biological behaviors, molecular mechanisms, and immune microenvironment patterns. Integrating multiple databases and previous studies, we identified that alisertib was sensitive to the high-risk group, and RITA was sensitive to the low-risk group.

Conclusion

Our study offers an appealing platform to screen dismal prognosis LUAD patients to improve clinical outcomes by optimizing precision therapy.

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Data availability

The original data presented in the study are freely available from the following websites: UCSC Xena database, https://xenabrowser.net/datapages/. GEO, https://www.ncbi.nlm.nih.gov/geo/. CBioPortal, https://www.cbioportal.org/. CancerSEA, http://biocc.hrbmu.edu.cn/CancerSEA/. PRISM, https://depmap.org/portal/download/. CCLE, https://sites.broadinstitute.org/ccle/. CMap database, https://clue.io/.

Abbreviations

LUAD:

Lung adenocarcinoma

TNM:

Tumor-node-metastasis

OS:

Overall survival

ctDNA:

Circulating tumor DNA

NGS:

Next-generation sequencing

RGS:

Robust machine learning-derived genome-wide expression signature

FPKM:

Fragments per kilobase of million

TPM:

Trans per million

GEO:

Gene Expression Omnibus

OSRs:

OS-associated RNAs

Enet:

Elastic network

RSF:

Random survival forest

GBM:

Generalized boosted regression modeling

plsRcox:

Partial least-squares regression for Cox

survival-SVM:

Survival support vector machine

SuperPC:

Supervised principal components

C-index:

Concordance index

K–M:

Kaplan–Meier

AUC:

Area under the ROC curve

EMT:

Epithelial–mesenchymal transition

TMB:

Tumor mutation burden

KEGG:

Kyoto Encyclopedia of Genes and Genomes

GO:

Gene Ontology

MSI:

Microsatellite instability

FGA:

Fraction of genome altered

FGG:

Fraction of genome gained

FGL:

Fraction of the genome lost

ICBs:

Immune checkpoint blockers

PRISM:

Profiling relative inhibition simultaneously in mixtures

CTRP:

Cancer Therapeutics Response Portal

ssGSEA:

Single-sample gene set enrichment analysis

References

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Funding

This work was supported by the Henan Province Medical Research Project, Henan, China (No. LHGJ20190388).

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Authors and Affiliations

Authors

Contributions

XG contributed to the study design and data analysis. XG contributed to manuscript writing. XH contributed to project oversight and manuscript revisiting. HX and SW collected samples and generated data. WY offers the funding. WY, YZ, LL, LW, ZX, YB, SL, and LFL contributed to manuscript revisiting. All authors read and approved the final manuscript.

Corresponding authors

Correspondence to Yuhui Wang or Xinwei Han.

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Conflict of interest

The authors have no relevant financial or non-financial interests to disclose.

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Ge, X., Xu, H., Weng, S. et al. Systematic analysis of transcriptome signature for improving outcomes in lung adenocarcinoma. J Cancer Res Clin Oncol 149, 8951–8968 (2023). https://doi.org/10.1007/s00432-023-04814-y

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  • DOI: https://doi.org/10.1007/s00432-023-04814-y

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