PTPA and neoplasm: SAT1 modulates cell migration and resistance in multiple tumor types, whereas PPP2R2D is a component of the tumor-suppressive phosphatase PP2A (Vandenberg 2008; Seshacharyulu et al. 2013; Brett-Morris et al. 2014; Phanstiel 2018; Yu et al. 2018; Fahrmann et al. 2019).