To explore whether genes are silenced in basal-like tumours by other mechanisms than promoter methylation, we utilized gene expression data for 286 primary tumours classified into molecular subtypes to investigate the expression of EZH2. We found EZH2 to be differently expressed between subtypes (P = 1 × 10-31, ANOVA; Figure 4a). The gene discussed is EZH2; the disease is neoplasm.