Breast Cancer Research and Treatment

, Volume 142, Issue 3, pp 529–536

Long non-coding RNA HOTAIR is an independent prognostic marker of metastasis in estrogen receptor-positive primary breast cancer

  • Kristina P. Sørensen
  • Mads Thomassen
  • Qihua Tan
  • Martin Bak
  • Søren Cold
  • Mark Burton
  • Martin J. Larsen
  • Torben A. Kruse
Preclinical Study

DOI: 10.1007/s10549-013-2776-7

Cite this article as:
Sørensen, K.P., Thomassen, M., Tan, Q. et al. Breast Cancer Res Treat (2013) 142: 529. doi:10.1007/s10549-013-2776-7

Abstract

Expression of HOX transcript antisense intergenic RNA (HOTAIR)—a long non-coding RNA—has been examined in a variety of human cancers, and overexpression of HOTAIR is correlated with poor survival among breast, colon, and liver cancer patients. In this retrospective study, we examine HOTAIR expression in 164 primary breast tumors, from patients who do not receive adjuvant treatment, in a design that is paired with respect to the traditional prognostic markers. We show that HOTAIR expression differs between patients with or without a metastatic endpoint, respectively. Survival analysis shows that high HOTAIR expression in primary tumors is significantly associated with worse prognosis independent of prognostic markers (P = 0.012, hazard ratio (HR) 1.747). This association is even stronger when looking only at estrogen receptor (ER)-positive tumor samples (P = 0.0086, HR 1.985). In ER-negative tumor samples, we are not able to detect a prognostic value of HOTAIR expression, probably due to the limited sample size. These results are successfully validated in an independent dataset with similar associations (P = 0.018, HR 1.825). In conclusion, our findings suggest that HOTAIR expression may serve as an independent biomarker for the prediction of the risk of metastasis in ER-positive breast cancer patients.

Keywords

HOTAIR Breast cancer Prognosis Gene expression Long non-coding RNA Metastasis 

Supplementary material

10549_2013_2776_MOESM1_ESM.doc (344 kb)
Supplementary material 1 (DOC 344 kb)

Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Kristina P. Sørensen
    • 1
    • 2
  • Mads Thomassen
    • 1
    • 2
  • Qihua Tan
    • 1
    • 3
  • Martin Bak
    • 4
  • Søren Cold
    • 5
  • Mark Burton
    • 1
    • 2
  • Martin J. Larsen
    • 1
    • 2
  • Torben A. Kruse
    • 1
    • 2
  1. 1.Department of Clinical GeneticsOdense University HospitalOdense CDenmark
  2. 2.Human Genetics, Clinical InstituteUniversity of Southern DenmarkOdenseDenmark
  3. 3.Epidemiology, Biostatistics and BiodemographyUniversity of Southern DenmarkOdenseDenmark
  4. 4.Department of PathologyOdense University HospitalOdenseDenmark
  5. 5.Department of OncologyOdense University HospitalOdenseDenmark

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