The prevalence of PD motor symptoms was similar across all carrier groups, with the exception that fewer LRRK2 p.G2019S PD participants reported hypophonia (softer speech) and micrographia (smaller handwriting) than GBA1 p.N409S PD participants and noncarriers with PD, and fewer LRRK2 p.G2019S carriers reported freezing gait relative to noncarriers with PD. Here, LRRK2 is linked to Parkinson disease.