Common pathogenic pathways in melanoma and Parkinson disease.

There is growing evidence in the scientific literature for shared risk and overlapping disease mechanisms in the development of cancer and Parkinson disease (PD). This association has recently been highlighted with respect to melanoma and PD. Therefore, we review and discuss the literature concerning this unexplained link. A striking overlap is observed in the tyrosine and L-dopa biosynthetic pathways suggesting a common disease mechanism associated with these 2 heterogeneous disorders that warrants further investigation.