It is the only other tacstd gene family member of TACSTD1, also known as EpCAM.12 During liver injury in murine models, HPCs (aka oval cells) start to express TROP-2 and can be used to isolate oval cells from animal models of liver disease.11 TROP-2 expression in human HPCs has been described within our group.13, 14 To isolate human HPCs, TROP-2 expression and isolation potential has not been tested yet in alcoholic liver. The gene discussed is EPCAM; the disease is liver disorder.