Corroborating results from Dälken et al. and Oberoi et al. supported the specificity and therapeutic efficacy of TGFα-GrB hCFPs in killing EGFR overexpressing cancer cells using pico to nanomolar IC50 concentrations in the presence of endosomolytic chloroquine reagent [217, 219]. The gene discussed is EGFR; the disease is cancer.