Increased serum levels of β2-GPI-Lp(a) complexes and their association with premature atherosclerosis in patients with rheumatoid arthritis

β2-GPI-Lp(a) complex concentrations increased in active RA. Inflammation and oxidative stress in RA contribute to the increase of ox-Lp(a) and subsequently the formation of β2-GPI-Lp(a).