LPIN1 and Parkinson disease: In distinguishing the early stage PD from HC, the AUC of LPIN1 and TNFAIP3 were 0.817 (95% CI: 0.717–0.917, p < 0.0001, sensitivity = 0.867, specificity = 0.692) and 0.650 (95% CI: 0.507–0.794, p = 0.040, sensitivity = 0.667, specificity = 0.718) (Fig. 10B) (Additional file 7: Table S7).