Ontological enrichment analysis showed that the quiescent breast cancer cell transcriptome was significantly enriched with genes involved in epithelial-mesenchymal transition (EMT), extracellular matrix (ECM) interaction/degradation, immunoregulation and stress-tolerance-related signalling (e.g., hypoxia and KRAS) (Supplementary Figure S3A). This evidence concerns the gene KRAS and breast cancer.