2019 Annual ReportJ Intern MedPublished the "IgG" completed by the team of Professor Zhang Wen and Professor Fei Yunyun from the Department of Rheumatology and Immunology, Peking Union Medical College Hospital4Study on Related Disease Recurrence Factors "[Peng Y, Li JQ, Zhang PP, et al. Clinical outcomes and predictive relapse factors of IgG4-related disease following treatment: a long-term cohort study [J]. J Intern Med, 2019, 286 (5): 542 – 552.][1]。 In this study, a large sample of IgG4IgG was analyzed on the basis of a prospective cohort study of patients with related diseases4Related risk factors for disease recurrence, helping to identify and evaluate patients with high risk of recurrence, finding the best treatment plan for patients with high risk of recurrence, and at the same time, regular follow-up to better understand and control the disease.