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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

High Expression of MicroRNA-210 is an Independent Factor Indicating a Poor Prognosis in Japanese Triple-negative Breast Cancer Patients.

OBJECTIVE: MicroRNAs have emerged as a new class of non-coding genes involved in regulating cell proliferation, differentiation and viability. Recent studies have identified miR-210 as one of a set of hypoxia-regulated microRNAs and demonstrated a direct regulatory role of HIF-1 alpha for its transcription. Here, we assessed miR-210 expression in Japanese triple-negative breast cancers and determined its clinical significance. METHODS: TaqMan MicroRNA assays for miR-210 expression were performed on 161 samples of Japanese breast cancer tissue (58 triple-negative breast cancer and 103 estrogen receptor positive/HER2 negative). Correlations between miR-210 expression and clinicopathological factors were analyzed. The effects of several variables on survival were tested by a Cox proportional hazards regression analysis. RESULTS: miR-210 expression in triple-negative breast cancers was significantly higher than in estrogen receptor-positive/HER2-negative breast cancers (P < 0.001). Patients whose triple-negative breast cancers showed low miR-210 expression experienced significantly better disease-free and overall survival than those with high miR-210 expression (P = 0.02 and P = 0.05, respectively). Although the prognosis of patients with triple-negative breast cancers is poor, Cox univariate and multivariate analyses demonstrated that a higher expression of miR-210 was an independent factor indicating a worse prognosis than for patients with a low level of miR-210. CONCLUSIONS: The degree of miR-210 expression might be a clinically useful prognostic factor for decision-making regarding treatment in the adjuvant setting, especially in node-negative triple-negative breast cancer patients.[1]


  1. High Expression of MicroRNA-210 is an Independent Factor Indicating a Poor Prognosis in Japanese Triple-negative Breast Cancer Patients. Toyama, T., Kondo, N., Endo, Y., Sugiura, H., Yoshimoto, N., Iwasa, M., Takahashi, S., Fujii, Y., Yamashita, H. Jpn. J. Clin. Oncol. (2012) [Pubmed]
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