Differences in clinical characteristics of IgG4-related disease across age groups: a prospective study of 737 patients

Objective The aim of this study was to compare the clinical characteristics of IgG4-related disease (IgG4-RD) among different age groups. Methods We conducted a prospective study of 737 patients who were newly diagnosed with IgG4-RD and compared detailed demographic features, organ involvements, laboratory tests, treatments and outcomes across age groups. The patients were divided into five groups according to their age at diagnosis: ≤39, 40–49,...