GBA1 and Abnormal autonomic nervous system physiology: The frequency of the non-motor symptoms that are considered common in GBA1-associated PD patients were the following in our cohort: hyposmia 17.2% (n=5), sleep disturbances 20.6% (n=6), and autonomic dysfunctions such as obstipation 13.8% (n=4), urogenital dysfunction 20.6% (n=6), and orthostatic hypotension 3% (n=1).