Previous studies have revealed that MOAP1 (PNMA4) likely plays a role in regulating apoptosis, but beyond these studies in cancer cell lines, functional studies remain sparse (Tan et al. 2001, 2005; Fu et al. 2007; Foley et al. 2008; Huang et al. 2012; Law et al. 2015). Here, MOAP1 is linked to cancer.