USP13 and cancer: Interestingly, NEDD4-1 undergoes auto-ubiquitination that serves it as a scaffold for engaging the ubiquitin-specific protease 13 (USP13) to form a NEDD4-1/USP13 deubiquitination complex, which subsequently deubiquitinates and stabilizes VPS34 to induce phagophore nucleation in cancer cells.