Accordingly, in the research and direct-to-consumer (DTC) spaces, there has been a notable increase in genetic testing for Parkinson’s disease over the past decade.14,15 Over 10 000 people with Parkinson’s disease have ordered DTC testing from 23andMe that includes health risk assessment for Parkinson’s disease via limited, targeted testing of a single variant, each, within the genes LRRK2 and GBA1. Here, LRRK2 is linked to Parkinson disease.