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Search: WFRF:(O'Herlihy Colm)

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1.
  • Brennan, Donal J., et al. (author)
  • Tumour-specific HMG-CoAR is an independent predictor of recurrence free survival in epithelial ovarian cancer
  • 2010
  • In: BMC Cancer. - : Springer Science and Business Media LLC. - 1471-2407. ; 10, s. 125-
  • Journal article (peer-reviewed)abstract
    • Background: Our group previously reported that tumour-specific expression of the rate-limiting enzyme in the mevalonate pathway, 3-hydroxy-3-methylglutharyl-coenzyme A reductase (HMG-CoAR) is associated with more favourable tumour parameters and a good prognosis in breast cancer. In the present study, the prognostic value of HMG-CoAR expression was examined in tumours from a cohort of patients with primary epithelial ovarian cancer. Methods: HMG-CoAR expression was assessed using immunohistochemistry (IHC) on tissue microarrays (TMA) consisting of 76 ovarian cancer cases, analysed using automated algorithms to develop a quantitative scoring model. Kaplan Meier analysis and Cox proportional hazards modelling were used to estimate the risk of recurrence free survival (RFS). Results: Seventy-two tumours were suitable for analysis. Cytoplasmic HMG-CoAR expression was present in 65% (n = 46) of tumours. No relationship was seen between HMG-CoAR and age, histological subtype, grade, disease stage, estrogen receptor or Ki-67 status. Patients with tumours expressing HMG-CoAR had a significantly prolonged RFS (p = 0.012). Multivariate Cox regression analysis revealed that HMG-CoAR expression was an independent predictor of improved RFS (RR = 0.49, 95% CI (0.25-0.93); p = 0.03) when adjusted for established prognostic factors such as residual disease, tumour stage and grade. Conclusion: HMG-CoAR expression is an independent predictor of prolonged RFS in primary ovarian cancer. As HMG-CoAR inhibitors, also known as statins, have demonstrated anti-neoplastic effects in vitro, further studies are required to evaluate HMG-CoAR expression as a surrogate marker of response to statin treatment, especially in conjunction with current chemotherapeutic regimens.
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2.
  • Brennan, Donal, et al. (author)
  • The transcription factor Sox11 is a prognostic factor for improved recurrence-free survival in epithelial ovarian cancer
  • 2009
  • In: European Journal of Cancer. - : Elsevier BV. - 1879-0852 .- 0959-8049. ; 45:8, s. 1510-1517
  • Journal article (peer-reviewed)abstract
    • Abstract Background: Current prognostic molecular markers for epithelial ovarian cancer (EOC) are insufficient. The aim of the current study was to investigate the role of Sox11 in EOC Methods: Using an in silico transcriptomic screen Sox11 was identified as a potential EOC biomarker. Sox11 protein expression was evaluated using immunohistochemistry (IHC) in 76 EOC cases, which were analyzed using automated algorithms to develop a quantitative scoring model. Results: Sox11 mRNA expression was up-regulated in EOC compared to normal tissues. Automated analysis of Sox11 in the EOC cohort revealed high expression of Sox11, in 40% of tumours, who had an improved recurrence free survival (RFS) (p= 0.002). Multivariate analysis confirmed Sox11 was an independent predictor of improved RFS after controlling for stage and grade. Conclusions: These data suggest that Sox11 is a new prognostic marker in EOC. Loss of SOX 11 is associated with a decreased RFS and a more aggressive phenotype.
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