These COVID-19 patients were tested for the presence of LAC (lupus anticoagulant) using the ACLTOP750®, anti-cardiolipine (ACL) and anti-β2glycoprotéine I (anti-β2GPI) IgG/IgM/IgA by enzyme-linked immunosorbent assay (ELISA). This evidence concerns the gene CD40LG and COVID-19.