CTSB and Parkinson disease: We identified one conditionally distinct association signal in CTSB, rs1293289(pJ = 1.14e-06), in the GP2-EUR cohort, but rs1293289 was correlated with the known PD GWAS hit rs1293298 (D’ = 0.97, R2 = 0.80, P < 0.0001) (Table 1; Supplementary Fig. 3a).