GBA1 and Parkinson disease: This might be related to the fact that those PD-GBA1 participants with 3T Siemens data tended to be less cognitively impaired than the remaining PD-GBA1 patients (mean MoCA score of 27.2 (SD = 2.4) vs. 25.8 (SD = 2.6), BF−0 = 3.2).