DOCK3 and Cognitive impairment: UPDRS-III also correlated with MoCA (Spearman ́s rho = − 0.597, 95% CI = − 0.766 to − 0.349, p < 0.001; Additional file 2: Fig. S3), so we were wondering whether the SAA kinetic features better represent motor symptoms (UPDRS-III) or cognitive impairment (MoCA).