ERBB2 and neoplasm: For example, the distribution of cells from core HER2-113 across the 7 GMM clusters is shown in Fig. 6c, orange bars, and reveals over-representation of Cluster 3 in that tumor, whereas other samples comprised a more even distribution of clusters and therefore had a more heterogenous composition (e.g., HER2-164 and HER2-70; Fig. 6d).