Fig. 2

Gene expression phenotypes of breast cancer epitypes. a Percentage of tumors in an epitype classified into each expression-based molecular subtype. No-GEX samples without available gene expression data. b Expression levels of three gene modules stratified by epitypes. In all panels, the discovery and validation cohorts are shown separately and numbers of analyzed tumors in each epitype are shown at the top. HER2 human epidermal growth factor receptor 2