Compared with HCs, PD patients exhibited reduced DC in the PSMA (right PSMA: peak T = 5.38, PFWE = 0.003, MNI = [63 −9 30], cluster size = 103 voxels at Puncorrected < 0.001; left PSMA: peak T = 4.97, PFWE = 0.014, MNI = [– 42 −9 36], cluster size = 145 voxels at Puncorrected < 0.001; Figures 1A, B). Here, FOLH1 is linked to Parkinson disease.