Fig. 4

Scatter-plot of circulating miR-30b-5p relative expression according to stage (a). ** p-value < 0.01 by non-parametric Kruskal–Wallis test. Y-axis denotes circulating miR-30b-5p relative expression multiplied by 1000. Scatter-plots of circulating miR-30b-5p relative expression in localized and advanced breast cancer (b) and according to N stage (c) and M stage (d). * p-value < 0.05 and *** p-value < 0.001 by non-parametric Mann–Whitney U test. Y-axis denotes circulating miR-30b-5p relative expression multiplied by 1000