As shown in Figures 1A–F, linear correlation analyses showed that the plasma lncRNA MEG3 level in PD patients was negatively correlated with NMSS score (r = −0.284, P = 0.002), and positively correlated with MMSE (r = 0.255, P = 0.004) and MoCA (r = 0.186, P = 0.017) scores. The gene discussed is MEG3; the disease is Parkinson disease.