Jin et al. reported that daidzein (25–100 μM) treatment of MCF‐7 BC cells caused up‐regulation of Bax protein and down‐regulation of Bcl‐2 protein expression, leading to cytochrome c release, which in turn induced apoptosis via activating caspases‐9 and 7.111. The gene discussed is BCL2; the disease is breast cancer.