PROBLEM TO BE SOLVED: To inhibit tumorigenesis of pluripotent stem cells.SOLUTION: The present invention provides agents for inhibiting tumorigenesis of pluripotent stem cells, containing an iron chelator.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2019,JPO&INPIT【課題】多能性幹細胞の腫瘍化を抑制する。【解決手段】鉄キレート剤を含む多能性幹細胞の腫瘍化抑制剤。【選択図】図4