Analysis of miR-34 family members using breast cancer TCGA data. Pair-wise scatter-plots of the expression of miR-34a, −34b and -34c in 658 miRNA HiSeq breast tumor samples from TCGA (A-C). Box plots demonstrate log2 expression levels of miR-34a (D), miR-34b (E) and miR-34c (F) in basal-like tumors, non-basal-like tumors and non-malignant breast tissue. Indicated p-values were calculated with a t-test comparing the group with the basal-like tumor samples. Kaplan-Meier analysis curves were constructed using the 310 TCGA tumors that had miRNA HiSeq data and follow-up data (G-I). The expression data were divided based on median expression and new tumor event was used as end point.