The most common miRNAs that regulate the COVID-19–ACE2 interaction networks were miR-27a-3p, miR-10b-5p, miR-302c-5p, miR-587, miR-124-3p, and miR-16-5p [243], which offer great potential in reducing the cytokine storm of COVID-19 (Table 2). The gene discussed is ACE2; the disease is COVID-19.