The Efficacy and Safety of Bevacizumab in Patients With Severe Covid-19: a Multicenter, Randomized, Double-blind, Parallel-group, Placebo-controlled Trial
The novel coronavirus (SARS-CoV-2) is a new strain of coronavirus found in human in 2019, which causes epidemic worldwide. Novel coronavirus disease (COVID-19) causes acute lung injury (ALI) and acute respiratory distress syndrome (ARDS) in patients with severe COVID-19. Pulmonary edema is the key detrimental feature of ALI/ARDS. Autopsy of patients died from COVID-19 reported that, pulmonary mucus exudation was more severe and obvious than SARS infection. Pulmonary CT scanning and pathological findings also suggest that pulmonary edema caused by inflammatory exudation is a distinguished feature of COVID-19. Vascular endothelial growth factor (VEGF), also known as vascular permeability factor (VPF), is known as the most potent factor to increase vascular permeability, with the induction effect 50,000 times stronger than histamine. Bevacizumab is an anti-VEGF recombinant humanized monoclonal antibody, which has been used in anti-tumor treatment since 2004, with considerable reliability and clinical safety. This trial will provide high level evidence to answer whether bevacizumab is efficacy and safe medication for patients with severe COVID-19.
• Age: ≥18 years old, both genders;
• Confirmed COVID-19 diagnosis (any body fluid tested positive for SARS-CoV-2 nucleic acid by PCR, or positive for SARS-CoV-2 antigen);
• Respiratory rate ≥ 30 times/min, partial pressure of oxygen (PaO2)/ fraction of inspiration O2 (FiO2)≤ 300mmHg (1mmHg = 0.133kPa), or SpO2 ≤ 93% at rest without supplemental oxygen;
• Article (3) above is newly appeared within 7 days;
• Chest radiography or computed tomography shows bilateral chest infiltrates.