MIF and Parkinson disease: Proteins showing the highest positive correlation in PD patients included CHST6 (p = 1.6E-5 and Pearson correlation r = 0.72), MIF (p = 1.8E-5 and r = 0.67), LYVE1 (p = 4.8E-5 and r = 0.64), EFNA1 (p = 5E-5 and r = 0.64), and ADM (p = 1.3E-4 and r = 0.61; Figure 6A).