Background: Tocilizumab, a monoclonal antibody directed against the interleukin-6 receptor, has been proposed to mitigate the cytokine storm syndrome associated with severe COVID-19. We aimed to investigate the association between tocilizumab exposure and hospital-related mortality among patients requiring intensive care unit (ICU) support for COVID-19.
Methods: We did a retrospective observational cohort study at 13 hospitals within the Hackensack Meridian Health network (NJ, USA).