A slight increase in the number of apoptotic and necrotic SH-SY5Y cells was also found when co-cultured on plastic with hADSCs-IL2 as compared to native hADSCs, but not hADSCs-BFP, which suggests that hADSCs-IL2 itself did not induce the death of neuroblastoma cells and their antitumor effect was due to the ability to suppress SH-SY5Y cell proliferation. The gene discussed is IL2; the disease is neuroblastoma.