ZUP1 and ovarian neoplasm: Nearly 100 DUB enzymes have been identified in the human genome, which can be classified into seven types based on their catalytic subunits: ovarian tumour‐related proteases (OTUs), ubiquitin‐specific proteases (USPs), ubiquitin C‐terminal hydrolases (UCHs), Machado‐Joseph domain‐containing proteases (MJDs), motif‐interacting with ubiquitin containing proteases (MINDYs), JAMM/MPN domain‐associated Zn‐dependent metalloproteases (JAMMs) and zinc finger containing ubiquitin peptidase 1 (ZUP1).26, 27, 28, 29