Previously, the apoptosis-inducing ability of IL-24 was thought to be specific to cancer cells only, however, in line with our present experiment, Hsu and Li et al., demonstrated that members of the subfamily including IL-19 and IL-20 induce apoptosis of HK-2 kidney epithelial and M1 cortical duct cells [36–38]. The gene discussed is IL24; the disease is cancer.