ARDS characteristically is accompanied by a rapid onset fibrosis, which can be understood not only as a comorbidity, but also as one main player in the mortality of COVID-19, and the fact that IL-6 (the proinflammatory cytokine that is involved in connective tissue disorders, fibrosis included) is found increased in patients who died (and not in the ones that recovered from the syndrome) corroborates this theory [38]. The gene discussed is IL6; the disease is COVID-19.