GPC3 and hepatocellular carcinoma: Table I shows the rate of increase in the number of cells in 16 patients with HCC. We found that the total cell number increased (range, 1.1–270-fold), γδ T cells increased (range, 23–1.1×104-fold), and GPC3 peptide-specific CTLs increased (range, 24–1.7×105-fold) after 14 days.