Notably, carriers of the BST1 rs4698412 GA/AA genotype demonstrated significantly higher Unified Parkinson’s Disease Rating Scale (UPDRS-III) scores (p < 0.05) and poorer Timed Up and Go (TUG) test performance compared to GG genotype carriers, indicating more severe motor function and more pronounced gait and balance deficits (Li et al., 2019). Here, BST1 is linked to Parkinson disease.