- Abstract Number: 1918 • 2012 ACR/ARHP Annual Meeting - Cluster Analysis of Organ Involvements Patients with Serum IgG4 Elevation; IgG4–related Disease Is a Distinct Subtype of Patients with Hyper-IgG4Background/Purpose: IgG4-related disease (IgG4-RD) is a multi-organ affecting disease characterized by fibroinflammatory lesions with a abundant IgG4-positive plasma cells infiltration. This disorder includes many…
