Phospho-protein abundance was assayed in a high-throughput manner using the KinetWorksTM system (Kinexus Inc, Vancouver, Canada), for p = 52 proteins related to epidermal growth factor receptor (EGFR) signalling, in each of n = 35 breast cancer cell lines (see Additional File1:Sections 1.1-1.2 for details). This evidence concerns the gene EGFR and breast cancer.