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Shao, Wanting; Kuhn, Christina; Mayr, Doris; Ditsch, Nina; Kailuwait, Magdalena; Wolf, Verena; Harbeck, Nadia; Mahner, Sven; Jeschke, Udo; Cavailles, Vincent und Sixou, Sophie (2021): Cytoplasmic LXR expression is an independent marker of poor prognosis for patients with early stage primary breast cancer. In: Journal of Cancer Research and Clinical Oncology, Bd. 147, Nr. 9: S. 2535-2544

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Abstract

Purpose The aim of this study was to investigate the expression of liver X receptors alpha/beta (LXR) in primary breast cancer (BC) tissues and to analyze its correlations with clinicopathological parameters including patient survival. Methods In a well-characterized cohort of 305 primary BC, subcellular distribution of LXR was evaluated by immunohistochemistry. Correlations with clinicopathological characteristics as well as with patient outcome were analyzed. Results LXR was frequently localized in both nuclei and cytoplasms of BC cells, with stronger staining in nuclei. Total and nuclear LXR expression was positively correlated with ER and PR status. Overall survival analysis demonstrated that cytoplasmic LXR was significantly correlated with poor survival and appeared as an independent marker of poor prognosis, in stage I but not in stage II-III tumors Conclusion Altogether, these data suggest that cytoplasmic LXR could be defined as a prognostic marker in early stage primary BC.

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