PLAUR and COVID-19: In this context, hyperferritinaemia, high CRP levels, and lymphopenia, along with some more sophisticated markers such as the soluble urokinase plasminogen activator receptor (suPAR) ≥ 6 ng/mL and SCOPE score ≥ 6, have already been associated with severity and survival of COVID-19 patients [6,7,14,33,34,35,36].