CXCL12 and Parkinson disease: Other PD-related proteins including the 20 S Proteasome complex (PSMA1-3, PSMA5-7, PSMB1, PSMB3, and PSMB5-6), Parkinson’s disease protein 7 (PARK7), Gelsolin, Amyloid P component, Clusterin, and Stromal cell-derived factor 1 (SDF-1) are also identified in PD patient plasma-derived NDEVs [124].