For instance, LncRNAs BACE-AS1, NEAT1, and GAS5 demonstrated a robust discriminatory capability as candidate diagnostic biomarkers for AD [110]; differentially expressed lncRNA, MALAT1 [112,113], XIST [114], MEG3 [115] have potential as candidate diagnostic biomarkers for PD. The gene discussed is MEG3; the disease is Parkinson disease.