ERBB2 and breast cancer: To investigate FBLN2 expression in the different molecular subtypes of human breast cancer, meta-analyses of publicly available datasets of breast cancer cell lines from Bioportal [28–31] and the Human Protein Atlas [35] revealed that FBLN2 had a lower expression in cell lines that represent LumA and LumB subtypes and had a higher expression in cell lines that represent Her2 + and triple-negative subtypes (Fig. 6).