GALC and Parkinson disease: As for LOPD, all SNPs were in the HWE except for the rs13294100 of SH3GL2. The rs8005172 of GALC was associated with PD in both the allele model as well as the additive model (rs8005172: p = 0.016, OR = 0.71, allele model, p = 0.016, additive model).