COVID-19 and Diabetes Outcomes (CORONADO) trial revealed that 10.6% of diabetes mellitus patients hospitalized for coronavirus disease 2019 (COVID-19) and die within 7 days. Several studies from New York, Italy, and China confirm that diabetic patients are at a much high risk for mortality due to COVID-19. Besides respiratory illness, COVID-19 increases cardiac injury, and diabetic ketoacidosis. In the absence of specific guidelines for the prevention and treatment of COVID-19 for diabetic

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... nts, they remain at higher risk and are more susceptible to COVID-19. Further, there is a scarcity of basic knowledge on how diabetes affects pathogenesis of severe acute respiratory coronavirus (SARS-CoV-2) infection. In diabetic patients, impaired glucose utilization alters metabolic and consequently biological processes instigating pathological remodeling, which has detrimental effects on cardiovascular systems. Majority of biological processes are regulated by non-coding microRNAs (miRNAs), which have emerged as a promising therapeutic candidate for several diseases. Considering the higher risk of mortality in diabetic COVID-19 patients, novel diagnostic test and treatment strategy are urgently warranted in post-COVID-19 era. Here, we describe potential roles of miRNA as a biomarker and therapeutic candidate, especially for heart failure, in diabetic COVID-19 patients.