POU5F1 and cancer: Since one of the most abundant categories singled out when dissecting the expanded Oct4-TN correlated with cancer, we interrogated a more specific repository of cancer-related genes, i.e., genes that, compared to controls, are significantly up- or down-regulated in a wide variety of solid and non-solid tumours (EBI Gene Expression Atlas; http://www.ebi.ac.uk/gxa/).