RPPA data of TCGA tumors was downloaded from The Cancer Proteome Atlas (Level 4 data, data release version 4.0. MD Anderson Cancer Center, Houston, TX). Level 4 data are median normalized log2 expression data. Patient number: ER+ ILC (n=137) vs ER+ IDC (n=417), LumA ILC (n=115) vs LumA IDC (n=246). p-values are not corrected for multi comparison