New drug tested in kids with rare autoimmune disease

This study aims to understand how a drug called inebilizumab works in children and teenagers with Immunoglobulin G4-related disease (IgG4-RD), a rare condition where the immune system attacks the body's own tissues. Researchers will measure how the drug moves through the body, its effects on immune cells, and check for side effects in 15 participants aged 2 to 18. The goal is to see if this treatment can help control the disease and reduce the need for steroid medications.