In our previous study, we revealed that the expression of FLI‐1 is significantly upregulated in the breast cancer tissues compared with that in the corresponding adjacent nontumor tissues (paired tumor and adjacent tissues of 53 cases).15 To further evaluate the relevance of clinical molecular subtypes and clarify the prognostic value of FLI‐1 in breast cancer, patient‐derived tissue microarray was carried out using 140 breast cancer samples. Here, FLI1 is linked to breast cancer.