In line with our results, a recent cross-sectional study [27], evaluating cutaneous α-synuclein deposition in a large cohort of patients with PD and other synucleinopathies, reported significant correlations between phosphorylated α-synuclein and MoCA score (r = −0.32, p < 0.001). This evidence concerns the gene DOCK3 and synucleinopathy.