AZGP1 and Parkinson disease: Furthermore, the consistent identification of AZGP1 acrossall three biofluids, with differential glycosylation patterns, underscoredits potential as a valuable biomarker and its role in neuroprotection.GO and KEGG pathway analyses revealed significant enrichment in immune-relatedprocesses, lysosomal trafficking, and MAPK signaling, correlatingglycosylation dysregulation to membrane protein dysfunction and immunedys-homeostasis in PD.