According to the consensus its minimal subset of expression markers includes increased expression of cytokeratins (KRT) 5, 6 and 14 and reduced expression of FOXA1 and GATA3. Indeed, in the extended TCGA data set most tumours with low TUG1 could be assigned to the BASQ type with significant upregulated KRT5 and KRT14 expression and significantly lower expression of luminal markers FOXA1 and GATA3 (Fig 3C and 3D, Fig 4A). This evidence concerns the gene KRT5 and neoplasm.