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- W2014750356 abstract "p53 overexpression and loss of PTEN expression have been implicated in the pathogenesis of endometrial cancer. Our aim was to correlate expression levels of these proteins with clinicopathological parameters to characterise their utility as biomarkers.Immunohistochemistry was done on 49 cases of formalin fixed paraffin embedded endometrial cancer tissue for p53 and 47 for PTEN expression. For p53 staining the Hue Saturation and Intensity mathematical model was used to evaluate different degrees of positivity of the immunohistochemical stain. The quick score was used for p53 and immunoreactive score for PTEN was done to score immunoreactivity. For PTEN, average percentage of positive cells and intensity was evaluated and the immunoreactive score was calculated. Both these scoring methods incorporated percentage of positive cells and staining intensity.Univariate Cox regression analysis for cause specific survival showed a hazard ratio of 9.2 for p53 overexpression (P<0.05). High levels of P53 were significantly associated with histologic type, grade, LVI and recurrent disease. There was no significant association between PTEN expression and clinicopathological features but it was noted that the 8 patients who relapsed were PTEN negative. Cause specific survival could not be assessed for PTEN expression due to the lack of events in this group. PTEN and p53 (n=46) combined analysis failed to demonstrate a significant association on prognostic features in this group.![Figure][1] Overexpression of P53 has a negative effect on disease specific survival and was associated with poor prognostic features. We did not demonstrate a significant association with clinicopathological features assessed and PTEN expression. However of the 8 patients who relapsed all were PTEN negative and 7 were p53 positive. Dual assessment of p53 and PTEN warrants further investigation as a prognostic indicator.Citation Information: Mol Cancer Ther 2013;12(11 Suppl):C32.Citation Format: Bihani Kularatne, Arrigo Capitanio, Rupali Arora, Philippa Jones, Andre Lopes, Jennifer Paterson, Rebecca Kristeleit. PTEN and p53 expression in endometrial cancer correlated with clinicopathological phenotype. [abstract]. In: Proceedings of the AACR-NCI-EORTC International Conference: Molecular Targets and Cancer Therapeutics; 2013 Oct 19-23; Boston, MA. Philadelphia (PA): AACR; Mol Cancer Ther 2013;12(11 Suppl):Abstract nr C32. [1]: pending:yes" @default.
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- W2014750356 date "2013-11-01" @default.
- W2014750356 modified "2023-09-25" @default.
- W2014750356 title "Abstract C32: PTEN and p53 expression in endometrial cancer correlated with clinicopathological phenotype." @default.
- W2014750356 doi "https://doi.org/10.1158/1535-7163.targ-13-c32" @default.
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