BPIFB4 and COVID-19: Based on previous studies on the prognostic relevance of BPIFB4 in vascular pathology and its association with the degree of carotid stenosis in atherosclerotic patients (18), we moved to analyze the plasma BPIFB4 levels in n = 32 severe (high grade) and n = 32 nonsevere (low grade) COVID-19 patients.