IgG4-Related Disease (IgG4-RD) is a rare chronic autoimmune disorder characterized by IgG4-positive plasma cell infiltration into organs, causing fibrosis and functional decline. Primarily affecting the pancreas, salivary glands, and kidneys, this condition gained medical recognition in the early 2000s. The IgG4-Related Disease Market covers diagnostics, therapeutics, and patient care, driven...