(c-d) Scatter plots of ITGA3 and ERBB2 expression of breast cancer cell lines, classified as luminal-, basal-, and post-EMT-like show clustering of luminal-like cell lines to low ITGA3 expression: (c) HER2+ and triple-negative-enriched breast cancer panel [22] (n = 30). This evidence concerns the gene ERBB2 and breast cancer.