GBA1 and Parkinson disease: The carrier frequency of known GBA1 risk variants for PD, including p.L483P, p.N409S, p.T408M, p.E365K, and p.R159W, was 15.2% in the PD cases and 7.9% in the controls (OR = 2.08 [1.32, 3.29]) (Table 2).