CRHR1 and Parkinson disease: The rs117615688 variant (chromosomal position 17:43798308) in the CRHR1 gene, located in the MAPT locus, was nominally associated with RBD (OR = 1.19, 95% CI = 1.05–1.36, p = 0.008) with an opposite direction of effect to that seen in PD (OR = 0.79, 95% CI = 0.75–0.84, p = 6.71E−16) (Table 2).