Home Neoplasma 2017 Neoplasma Vol.64, No.5, p.754-761, 2017

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Founded: 1954
ISSN 0028-2685
ISSN 1338-4317 (online)

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Neoplasma Vol.64, No.5, p.754-761, 2017

Title: Association of nuclear FOXP3 expression with low Ki67 index and better prognosis in patients with breast invasive ductal carcinoma
Author: J. Li, X. Zhang, L. Zheng, Y. Liu

Abstract: Recent studies have provided clear evidence that some types of human cancer cells expressed Forkhead Box Protein 3 (FOXP3). However, the presence and role of FOXP3 in breast cancer are still contradictory up to now. In this study, we detected the expression of FOXP3 protein by immunohistochemistry in 123 cases of breast invasive ductal carcinoma. It exhibited that the subcellular localization of FOXP3 expression in breast cancer cells is heterogeneous. In nucleus, FOXP3 expression ratio was 47.97% (59/123) and the nuclear FOXP3 expression was significantly associated with lower Ki67 index (P=0.041), negative vessel tumor embolus (P=0.024). It was also significantly correlated with the molecular subtypes of breast cancer (P=0.002), displaying the highest ratio in the Luminal A subtype (68.18%). Kaplan-Meier analysis indicated that high nuclear FOXP3 expression was associated with better overall survival (OS) (94.92% vs. 82.81%, P=0.022) and disease-free survival (DFS) (91.53% vs. 76.56%, P=0.026). Moreover, nuclear FOXP3 represented an independent prognostic factor for OS (P =0.033) in multivariate analysis. However, in cytoplasm, FOXP3 expression ratio was 63.41% (78/123) and no statistic prognostic significance was found. Thus, our data demonstrated that nuclear FOXP3 expression correlated with low Ki-67 index and better outcome in breast invasive ductal carcinoma, indicating that FOXP3 acted as a potential prognostic marker for breast cancer.

Keywords: breast cancer, FOXP3, Ki67, prognosis
Published online: 31-Aug-2017
Year: 2017, Volume: 64, Issue: 5 Page From: 754, Page To: 761
doi:10.4149/neo_2017_514
Price: 19.20 €






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