SuPAR in Adult Patients With Covid-19

The biomarker soluble urokinase plasminogen activator receptor (suPAR) is the soluble form of the cell membrane-bound protein urokinase plasminogen activator receptor (uPAR), which is expressed mainly on immune cells, endothelial cells, and smooth muscle cells. SPARCOL is a multi-center prospective observational study aiming to investigate if suPAR measured at admission can predict the risk of future complications and mortality in adults patients with Covid-19. The study will include approximately 500 patients and will be one of the largest so far. The study has been registered at Clinical Trials.gov and has been approved by the Institutional Review Board of the University Hospital of Larisa. Consecutive adult patients (≥ 18 years ) who are admitted to the Hospital due to Covid-19 will be screened for inclusion. Participants will undergo sampling of peripheral venous blood, immediately after admission. Blood samples drawn from all patients and EDTA plasma will be stored at -80° C until later measurement. Plasma suPAR levels will be determined using the suPARnostic® ELISA assay (ViroGates, Denmark). The primary endpoint will be the presence of respiratory complications, admission to ICU, and survival at 30 days. Secondary endpoints are also included, such as organ injury, hospital length of stay, and survival. Data analysis will be based on predefined data points on a prospective data collection form.