The presence of PD‐related genes in both datasets also shows that SNCA‐AS1 could be a direct player in the pathogenesis of the diseases, and the evidence reported in PBMCs of PD patients shows that the SNCA/SNCA‐AS1 ratio could be what is disrupted in the disease and could prove to be a relevant biomarker for the pathology. Here, SNCA is linked to Parkinson disease.