CDKN2A and neoplasm: DMP1 (cyclin D–binding myb‐like protein 1; Dmtf1) is a tumor suppressor, which can induce P53‐medicated cell‐cycle arrest by Arf‐independent and Arf‐dependent manners (Frazier et al., 2012; Inoue et al., 1999, 2007, 2016; Sugiyama et al., 2008).