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miR-320a shows improved prognostic value in advanced-stage breast cancer patients. Kaplan-Meier analysis and log-rank test showing the overall survival of 130 invasive breast cancer patients with low and high miR-320a levels categorized according to (A and B) lymph node status and (C and D) clinical TNM stage. miR-320a, microRNA-320a; TNM, tumor lymph node metastasis.
