Although combinational effects of an HDACi and CDDP in EOC cells have been tested (e.g., [36,59,60,61,62]), and reagents co-targeting CSC and non-CSC cell populations in cancer cell lines or mouse models have been reported (e.g., [57,58]), these studies did not test the effect in clearly defined CSC and non-CSC populations and were not linked to ZIP4. Here, SLC39A4 is linked to cancer.