TNFRSF13B (Tumor Necrosis Factor Receptor Superfamily Member 13B): Also known as TACI, TNFRSF13B is a receptor for cytokines BAFF and APRIL, which are crucial for B cell development and function. Mutations in TNFRSF13B have been associated with common variable immunodeficiency (CVID) and selective IgA deficiency, underscoring its importance in humoral immunity. Research on TNFRSF13B aims to understand its role in immune dysregulation and autoimmune diseases....