title: Expression of the transcription factor Ets-1 is an independent prognostic marker for relapse-free survival in breast cancer.
abstract: The transcription factor Ets-1 regulates the expression of several angiogenic and extracellular matrix remodeling factors, and might be implicated in disease progression of breast cancer. In the present study, the prognostic value of Ets-1 expression was assessed by quantitative real-time fluorescence RT-PCR in 123 sporadic primary breast cancer samples of patients with a median follow-up time of 62 months. Ets-1 expression levels correlated significantly with VEGF and PAI-1 in the same tissue. In univariate (P=0.0011) and multivariate (P=0.005) analyses, Ets-1 expression showed significant prognostic value for relapse-free survival. Ets-1 is a strong, independent predictor of poor prognosis in breast cancer. This seems - at least in part - to be attributable to its role in transcriptional regulation of factors involved in angiogenesis (VEGF), and extracellular matrix remodeling (PAI-1).
authors.affiliation: Department of Chemical Endocrinology, University Medical Center Nijmegen, Nijmegen, The Netherlands. p.span@ace.azn.nl
authors.forename: Paul N
authors.initials: PN
authors.lastname: Span
authors.forename: Peggy
authors.initials: P
authors.lastname: Manders
authors.forename: Joop J
authors.initials: JJ
authors.lastname: Heuvel
authors.forename: Chris M G
authors.initials: CM
authors.lastname: Thomas
authors.forename: Remko R
authors.initials: RR
authors.lastname: Bosch
authors.forename: Louk V A M
authors.initials: LV
authors.lastname: Beex
authors.forename: C G J
authors.initials: CG
authors.lastname: Sweep
mesh_terms: D000704:Analysis of Variance; D001943:Breast Neoplasms / Q000235:genetics* / Q000401:mortality / Q000473:pathology; D018572:Disease-Free Survival; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D015999:Multivariate Analysis; D011379:Prognosis; D050784:Proto-Oncogene Protein c-ets-1; D011518:Proto-Oncogene Proteins / Q000235:genetics*; D050783:Proto-Oncogene Proteins c-ets; D020133:Reverse Transcriptase Polymerase Chain Reaction; D016019:Survival Analysis; D013997:Time Factors; D014157:Transcription Factors / Q000235:genetics*
chemical_list: C494041:ETS1 protein, human; D050784:Proto-Oncogene Protein c-ets-1; D011518:Proto-Oncogene Proteins; D050783:Proto-Oncogene Proteins c-ets; D014157:Transcription Factors