“…In the light of these properties, systemic CSs have been empirically used to manage the cytokine storm in COVID-19 patients and mitigate its most severe manifestations such as ARDS, systemic organ failure and death [ 103 , 104 ]. In the early days of this pandemic, guidance regarding CSs was mixed: on the one hand, data collected during previous coronavirus outbreaks that share many clinical characteristics with COVID-19, SARS and MERS, were inconclusive about efficacy and safety of CSs [ 66 , 105 , 106 , 107 ]; on the other hand, the initial clinical experience on adjunctive therapy with CSs, which was essentially documented by case reports, observational and small (and often single-center) studies, similarly emphasized the need for large scale randomized trials to properly assess CSs on outcomes according to severity of COVID-19 disease [ 51 , 108 , 109 , 110 , 111 , 112 , 113 , 114 , 115 , 116 ]. On 6 June 2020, breaking news from the RECOVERY ( R andomized E valuation of COV ID-19 th ER ap Y ) trial based in the United Kingdom (NCT04381936) announced that participants who received 6 mg dexamethasone daily for 10 days saw improvements, and in particular the subsets of patients already on ventilators or who required non-invasive oxygen therapy [ 117 ].…”