(a–a”) Schematic of the sunburst plot indicating Gene Ontology (GO) terms for each sector (a) and the mapping of the DEGs in nucleus basalis of Meynert (NBM), nucleus accumbens, and putamen brain samples idiopathic PD patients (with LRRK2 risk mutations) and controls (a’) and mapping of the DEGs found commonly in fly and human samples (a”). This evidence concerns the gene LRRK2 and Parkinson disease.