Furthermore, there are cases suggesting a causative roleof SARS-CoV-2 infection in the development of Parkinson’s disease(PD) that are genetically related to the mutations in Parkin.61,62 Our study showing suppressed expression of Parkin by SARS-CoV-2may provide a mechanistic linkage between PD and COVID-19. The gene discussed is PRKN; the disease is Parkinson disease.