Pre-arrest were seen later in the blood tests, and the patient tested positive for COVID-19 serology with immunoglobulin M (IgM) 3.4 and immunoglobulin G (IgG) 4.2 (according to the hospital’s lab index: IgM considered negative if <1, and IgG negative if < 1.4). The gene discussed is CD40LG; the disease is COVID-19.