Leronlimab in Patients With Coronavirus Disease 2019 (COVID-19) With Need for Mechanical Ventilation or Extracorporeal Membrane Oxygenation

Leronlimab (PRO 140) is a humanized IgG4,k monoclonal antibody (mAb) that recognizes the C-C chemokine receptor type 5 (CCR5). Disruption of the C-C chemokine ligand 5 (CCL5)-CCR5 axis via leronlimab-mediated CCR5 blockade might prevent pulmonary trafficking of pro-inflammatory leukocytes and dampen pathogenic immune activation in coronavirus disease 2019 (COVID-19). The purpose of the study is to assess the safety and efficacy of leronlimab plus standard of care in critically ill patients hospitalized with COVID-19 pneumonia who are requiring mechanical ventilation or extracorporeal oxigenation (ECMO).