Figure 5From: CD44 isoforms are heterogeneously expressed in breast cancer and correlate with tumor subtypes and cancer stem cell markers Hierarchical clustering of breast tumors based on CD44 isoform expression resulted in four main clusters. The heatmap shows relative mRNA expression levels (red, high; green, low). Tumors in Cluster C and D were associated to the basal-like molecular subtype and cluster B was associated to luminal A-classified tumors. Cluster B and D had the highest proportions of tumors of the CD44+/CD24- phenotype.Back to article page