The aims of the present study were therefore; in patients with STEMI 1) to compare serum levels of IgM anti-PC measured acutely with measurements after 3 months; 2) to study a possible association between levels of IgM anti-PC and the severity of coronary artery disease, and; 3) to investigate whether IgM anti-PC levels are associated with long-term clinical outcome. Here, CD40LG is linked to coronary artery disorder.