CD70-CAR NK cells were cultured overnight with cytokines that were previously described to improve CAR T or NK cell product potency, being IL-2, IL-7, IL-12, IL-15, and IL-18, and co-cultured them with CD70+ tumor cell lines (Raji, PANC-1, and LIM2099 cells). The gene discussed is CD70; the disease is neoplasm.