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Development and independent validation of a prognostic assay for stage ii colon cancer using formalin-fixed paraffin-embedded tissue

  • Richard Kennedy
  • , M. Bylesjo
  • , Deborah Kerr
  • , T. Davison
  • , J.M. Black
  • , E.W. Kay
  • , R.J. Holt
  • , V. Proutski
  • , M. Ahdesmaki
  • , V. Farztdinov
  • , N. Goffard
  • , P. Hey
  • , F. McDyer
  • , K. Mulligan
  • , Julie Mussen
  • , E. O'Brien
  • , G. Oliver
  • , S.M. Walker
  • , Jude Mulligan
  • , C. Wilson
  • A. Winter, D. O'Donoghue, H. Mulcahy, J. O'Sullivan, K. Sheahan, J. Hyland, R. Dhir, O.F. Bathe, O. Winqvist, U. Manne, C. Shanmugam, S. Ramaswamy, E.J. Leon, W.I. Smith, Ultan McDermott, Richard Wilson, Daniel Longley, J. Marshall, R. Cummins, D.J. Sargent, Patrick Johnston, Paul Harkin

Research output: Contribution to journal › Article › peer-review

Abstract

Purpose: Current prognostic factors are poor at identifying patients at risk of disease recurrence after surgery for stage II colon cancer. Here we describe a DNA microarray-based prognostic assay using clinically relevant formalin-fixed paraffin-embedded (FFPE) samples. Patients and Methods: A gene signature was developed from a balanced set of 73 patients with recurrent disease (high risk) and 142 patients with no recurrence (low risk) within 5 years of surgery. Results: The 634-probe set signature identified high-risk patients with a hazard ratio (HR) of 2.62 (P <.001) during cross validation of the training set. In an independent validation set of 144 samples, the signature identified high-risk patients with an HR of 2.53 (P <.001) for recurrence and an HR of 2.21 (P = .0084) for cancer-related death. Additionally, the signature was shown to perform independently from known prognostic factors (P <.001). Conclusion: This gene signature represents a novel prognostic biomarker for patients with stage II colon cancer that can be applied to FFPE tumor samples. © 2011 by American Society of Clinical Oncology.
Original languageEnglish
Pages (from-to)4620-4626
Number of pages7
JournalJournal of Clinical Oncology
Volume29
Issue number35
DOIs
Publication statusPublished - 10 Dec 2011

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

ASJC Scopus subject areas

  • Cancer Research
  • Oncology

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