At present, some evidence shows that miR-7 is related to a variety of pathways and diseases: as a direct regulator of α-synuclein, it plays a role in Parkinson's disease, it regulates the mTOR signaling pathway in pancreatic B cells to promote cell proliferation, and it directly targets and downregulates the central carcinogen in tumor-related signaling pathways, which has a significant tumor suppressor effect [36]. The gene discussed is MTOR; the disease is Parkinson disease.