GBA1 and Parkinson disease: This is in agreement with the only other population-based study to assess GBA carriers at the time of PD diagnosis, which found that patients with GBA-PD had a similar motor profile compared to noncarriers.3 Although we would not yet advocate for routine genetic testing, these data suggest that screening for GBA variants might be helpful as part of a model to identify those at risk of a more malignant disease course at diagnosis.