CBLN1 and Parkinson disease: The levels of DG (14:0/0:0/16:0), DG (22:6/0:0/22:5), DG (16:1n7/0:0/18:1n7), DG (18:0/0:0/16:0), TG (15:0/20:2n6/18:1), TG (14:0/16:0/16:1), Cer (18:0/14:0), Cer (d18:0/16:0), were significantly lower in the PD group than in the control group.