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Association of miR-1247-5p expression with clinicopathological parameters and prognosis in breast cancer.
International Journal of Experimental Pathology 2018 August
Our study aimed to clarify the correlation between miR-1247-5p expression and clinicopathological parameters and survival of patients with breast cancer (BC). We evaluated the expression level of miR-1247-5p in 224 formalin-fixed, paraffin-embedded specimens (112 BC and matched cancer free tissues) by quantitative real-time reverse transcriptase polymerase chain reaction (qRT-PCR). miR-1247-5p expression in BC tissues was found to be decreased compared with matched normal tissues (P < 0.01). Additionally, low miR-1247-5p expression in BC tissues was significantly associated with the advanced TNM stage (P = 0.007), lymph node metastasis (P = 0.015), poorer pathological differentiation (P = 0.005) and molecular subtype (P = 0.027). The patients in the low miR-1247-5p group had a shorter disease-free survival and overall survival than those in the high miR-1247-5p group (P < 0.01). Furthermore, the univariate and the multivariate analyses showed that miR-1247-5p expression was an independent predictor of overall survival (P < 0.01). Our study showed that miR-1247-5p was related to the biological behaviour of breast tumour and prognosis of patients with BC. miR-1247-5p could be a novel tumour suppressor and act as a potential biomarker and therapeutic agent for breast carcinoma.
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