MET and hepatocellular carcinoma: We found that both MET-CAR.CD28ζ and MET-CAR.4-1BBζ T cells potently killed MHCC97H, C3A, JHH5 cells in a dose dependent manner, but had no effect on SNU398 cells, demonstrating a specific killing of MET+ HCC cells, independent of MET pathway activation (Fig. 2B).