EPCAM and hepatocellular carcinoma: Small series of non-EpCAM-based CTC isolation methods, such selection for the expression of asialoglycoprotein receptor or pancytokeratin or by cell size, suggest numerically higher incidence of detectable CTCs in metastatic HCC patients than has been reported with CellSearch, though the data are limited by small sample sizes and are not comparative [16,17,38].