Advanced non-small cell lung cancer, recurrent lung cancer (Phase I study): 1. Increased numbers of Vα24 NKT cells in peripheral blood of 2/3 patients after intravenous injection of α-GalCer-activated NKT cells. 2. Increased numbers of IFN-γ-producing NKT cells in all three patients after intravenous injection of α-GalCer-activated NKT cells. Here, IFNG is linked to lung cancer.