Gruszewska E, et al. - Authors evaluated the impact of juvenile idiopathic arthritis (JIA) on the serum glycosylation profile of transferrin isoforms. Experts did not find any significant associations between the concentration of transferrin isoforms and disease activity score or the degree of disability (VAS and CHAQ). They found that among patients with JIA there were shifts in transferrin isoforms profile. A potential clinical utility of the transferrin isoforms measurement, especially tetrasialotransferrin and pentasialotransferrin was indicated.