EPCAM and cancer: In the study by Salmon et al.25, chromosomal CNAs were detected in 67% of the CK/EpCAM positive CTCs analysed, demonstrating evidence of acceptability of these two conventional markers in CTC detection from malignant tumours, from amongst non-tumourigenic CK/EpCAM positive epithelial cells in blood (CellSearch criteria for CTC detection)26.