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Erschienen in: Breast Cancer Research and Treatment 1/2020

18.05.2020 | Preclinical study

High expression of OSR1 as a predictive biomarker for poor prognosis and lymph node metastasis in breast cancer

verfasst von: Yang Li, Jun Qin, Junyi Wu, Xueming Dai, Junming Xu

Erschienen in: Breast Cancer Research and Treatment | Ausgabe 1/2020

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Abstract

Purpose

Oxidative stress-responsive kinase 1 (OSR1) plays a crucial role in regulating diverse cellular pathophysiologic functions, including ion homeostasis, development, differentiation, angiogenesis, invasive migration, and metastasis. Regardless, the clinical significance of OSR1 in breast cancer is scarce. The current study was conducted to evaluate the effect of OSR1 on the prognosis of patients with breast cancer with a long-term follow-up.

Methods

OSR1 expression in formalin-fixed and paraffin-embedded tissue specimens was analyzed. These specimens were collected from 551 evaluable breast cancer cases by immunohistochemistry (IHC). OSR1 expression was dichotomized based on the H-score in IHC. The effects of OSR1 levels on the clinicopathological attributes and survival prediction in patients with breast cancer were explored.

Results

Among 551 specimens, 183 (33.2%) exhibited high expression of OSR1 in tumor cells. High OSR1 levels were markedly correlated with histologic grade (P = 0.035), ER (P < 0.001) and PgR (P = 0.043) expression, lymph node involvement (P < 0.001), TNM stage (P < 0.001), and axillary surgery procedures (P = 0.003). Univariate analysis results indicate that patients with high OSR1 expression had significantly poor overall survival (P < 0.001), distant disease-free survival (P < 0.001), and breast cancer-specific survival (P < 0.001). Multivariable Cox regression analyses suggest that OSR1 expression was an independent predictive marker of poor prognosis and lymph node metastasis (HR 3.224, 95% CI 1.182–8.702, P = 0.023) in patients with breast cancer.

Conclusions

Our findings indicate that OSR1 is a significantly independent prognosis index for patients with breast cancer with respect to distant disease-free survival, overall survival, and breast cancer-specific survival. High OSR1 expression caused an increase in deaths specifically attributed to breast cancer and was related to increased lymph node metastasis. However, the precise cellular mechanisms for OSR1 in breast cancer require further research.
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Metadaten
Titel
High expression of OSR1 as a predictive biomarker for poor prognosis and lymph node metastasis in breast cancer
verfasst von
Yang Li
Jun Qin
Junyi Wu
Xueming Dai
Junming Xu
Publikationsdatum
18.05.2020
Verlag
Springer US
Erschienen in
Breast Cancer Research and Treatment / Ausgabe 1/2020
Print ISSN: 0167-6806
Elektronische ISSN: 1573-7217
DOI
https://doi.org/10.1007/s10549-020-05671-w

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