Evaluation of the Efficacy and Safety of Sarilumab in Hospitalized Patients With COVID-19

Phase 2: The primary objective of the study is to evaluate the clinical efficacy of sarilumab relative to the control arm in adult patients hospitalized with COVID-19 regardless of disease severity strata. Phase 3 Cohort 1: The primary objective of the study is to evaluate the clinical efficacy of sarilumab relative to the control arm in adult patients hospitalized with critical COVID-19 receiving mechanical ventilation at baseline. Phase 3 Cohort 2: The primary objective of the study is to evaluate the clinical efficacy of sarilumab relative to the control arm in adult patients hospitalized with COVID-19 receiving mechanical ventilation at baseline.