IL6 and COVID-19: The central role of inflammation in virus-mediated myocardial injury is sustained by increased concentrations of plasmatic cytokines, such as interleukin-6 (IL-6), in COVID-19 patients with cardiac injury [109] and by the clinical evidence of an association between the cardiac damage marker cTn and known inflammatory markers, including C-reactive protein (CRP), procalcitonin (PCT), ferritin and fibrinogen [58,63].