A more recently developed anti-EpCAM immunotoxin, scFv2A9-PE, similarly uses the Pseudomonas aeruginosa exotoxin and exhibits an IC50 of 50 pM for cytotoxicity in EpCAM+ HHCC hematopoietic cells; however, it has yet to be tested against cancer cells [117]. This evidence concerns the gene EPCAM and cancer.