RRM2 and Parkinson disease: With the list of 49 proteins elevated, we observed a significant association using DAVID for the Parkinson’s disease (HTRA2, SDHA, NDUFS5, NDUFA10) and metabolic (SDHA, PIK3C3, RRM2, GNPDA2, CYP51A1, NDUFS5, TYMS, IMPA1, NDUFA10, PDXK) KEGG pathways.