The LRRK2 variant is strongly associated with symptoms of Parkinson's disease (PD) that are different from non-variant carriers with the disease The study revealed novel findings of genetic "hotspots" in people from Mexico, Cuba, Puerto Rico, and Brazil, where the founder variant has sprung up in other communities 23andMe has the largest LRRK2 G2019S research cohort, and launched the Parkinson's Impact Project (PIP) in 2018 to better understand which carriers are at greater risk of developing Parkinson's di ...