PD risk variants in SNCA (rs5019538-G, OR = 0.85, 95% CI = 0.81–0.89, p = 2.46e−10; rs356182-G, OR = 0.89, 95% CI = 0.84–0.95, p = 0.0001) and LRRK2 loci (rs34637584, OR = 0.41, 95% CI = 0.28–0.61, p = 1.04e−5) were associated with reduced PD + RBD risk. Here, LRRK2 is linked to Parkinson disease.