Cited by 168Gene expression and cancer classificationLung Cancer Research StudiesBreast Cancer Treatment Studies

Robust gene expression signature from formalin-fixed paraffin-embedded samples predicts prognosis of non-small-cell lung cancer patients.

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Xie, Yang, Xiao, Guanghua, Coombes, Kevin R., Behrens, Carmen, Solis, Luisa M., Raso, Gabriela, Girard, Luc, Erickson, Heidi S. +6 more·2011·Clinical Cancer Research

Published version of a preprint

Abstract

PURPOSE: The requirement of frozen tissues for microarray experiments limits the clinical usage of genome-wide expression profiling by using microarray technology. The goal of this study is to test the feasibility of developing lung cancer prognosis gene signatures by using genome-wide expression profiling of formalin-fixed paraffin-embedded (FFPE) samples, which are widely available and provide a valuable rich source for studying the association of molecular changes in cancer and associated clinical outcomes. EXPERIMENTAL DESIGN: We randomly selected 100 Non-Small-Cell lung cancer (NSCLC) FFPE samples with annotated clinical information from the UT-Lung SPORE Tissue Bank. We microdissected tumor area from FFPE specimens and used Affymetrix U133 plus 2.0 arrays to attain gene expression data. After strict quality control and analysis procedures, a supervised principal component analysis was used to develop a robust prognosis signature for NSCLC. Three independent published microarray datasets were used to validate the prognosis model. RESULTS: This study showed that the robust gene signature derived from genome-wide expression profiling of FFPE samples is strongly associated with lung cancer clinical outcomes and can be used to refine the prognosis for stage I lung cancer patients, and the prognostic signature is independent of clinical variables. This signature was validated in several independent studies and was refined to a 59-gene lung cancer prognosis signature. CONCLUSIONS: We conclude that genome-wide profiling of FFPE lung cancer samples can identify a set of genes whose expression level provides prognostic information across different platforms and studies, which will allow its application in clinical settings.

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Authors
Xie, Y., Xiao, G., Coombes, K. R., Behrens, C., Solis, L. M., Raso, G., Girard, L., Erickson, H. S., Roth, J., Heymach, J. V., Moran, C., Danenberg, K., Minna, J. D., & Wistuba, I. I.
Affiliations
  • The University of Texas MD Anderson Cancer Center (US)
  • Authors' Affiliations: Departments of 1Clinical Sciences, 2Simmons Cancer Center, 3Internal Medicine, 4Pharmacology, and 5Hamon Center for Therapeutic Oncology Research, The University of Texas Southwestern Medical Center, Dallas; Departments of 6Bioinformatics and Computational Biology, 7Thoracic/Head and Neck Medical Oncology, 8Pathology and 9Thoracic and Cardiovascular Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas; and 10Response Genetics, Inc., Los Angeles, California
Corresponding author
Wistuba, Ignacio I.
Venue
Clinical Cancer Research
Published
2011-09-01
Volume
17
Issue
17
Pages
5705-5714
ISSN
  • 1078-0432 (ISSN-L)
  • 1557-3265
OpenAlex
W2167736999
Cited by
162
References
51
Citations by year
2026: 1 · 2025: 9 · 2024: 4 · 2023: 10 · 2022: 24 · 2021: 13 · 2020: 11 · 2019: 12 · 2018: 5 · 2017: 13 · 2016: 9 · 2015: 11 · 2014: 14 · 2013: 14 · 2012: 10
FWCI
5.20
Type
journal article
Language
en
Open access
Locations
  • Clinical Cancer Research (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institute on Drug Abuse (R33DA027592, R21DA027592)
  • National Cancer Institute (CA-16672, (P50-CA70907, R01CA152301, P50CA070907, P30CA016672)
  • National Center for Research Resources (UL1RR024982)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gene expression and cancer classification
  • Health Sciences › Medicine › Oncology › Lung Cancer Research Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Breast Cancer Treatment Studies
Keywords
non-small cell lung cancer, prognostic gene signature, formalin-fixed paraffin-embedded tissue, gene expression profiling, tumor microdissection, stage I lung cancer, prognostic model validation
MeSH terms
Carcinoma, Non-Small-Cell Lung, Female, Formaldehyde, Humans, Lung Neoplasms, Male, Prognosis, Paraffin Embedding, Tissue Fixation, Oligonucleotide Array Sequence Analysis, Gene Expression Profiling

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