CD40LG and coronary artery disorder: The level of oxLDL-specific IgM was significantly lower in the CAD patient group compared to both young healthy volunteers and young smokers (6146 ± 4336 RLU for CAD vs. 13828 ± 7620 RLU for YH and 12636 ± 8349 RLU for YS), while no differences were observed in oxLDL-specific IgG values (Figure 6C).