We further evaluated the effects of iron chelators on NDRG2, 3, and 4 expressions in breast cancer cells as these members have not been studied as extensively as NDRG1 in the context of carcinogenesis (Ding et al., 2012; Shen et al., 2018; Yu et al., 2019). The gene discussed is NDRG1; the disease is breast carcinoma.