PARK2 (PARKIN) is an E3 ubiquitin ligase whose dysfunction has been associated with the progression of Parkinsonism and human malignancies, and its role in cancer remains to be explored.
On the other hand, the recessively inherited early-onset Parkinsonism is caused in about half of the cases with loss-of-function mutations in PARK2, which encodes E3 ubiquitin ligase parkin in the ubiquitin-proteasome system.