EGF and Parkinson disease: A gene ontology (GO) analysis generally associated these proteins with signaling pathways for epidermal growth factor and fibroblast growth factor (EGF and FGF), purine and serine glycine biosynthesis, glycolysis, the pentose phosphate pathway, and the ubiquitin proteasome pathway, all of which have been related to Parkinson’s Disease (Supplementary File S2).