A critical gap in PD genetics research is the lack of ancestral diversity.4 Although genetic forms of PD are found globally, approximately 75% of all genetic PD studies to date focused on European-ancestry individuals.5,6 Research in diverse populations is critical to uncovering unique genetic contributions to disease, which is particularly relevant for clinical trials driven by genetic discoveries, e.g., targeting glucocerebrosidase or LRRK2 kinase activity (encoded by the PD-linked genes GBA1 and LRRK2, respectively). The gene discussed is LRRK2; the disease is Parkinson disease.