IL4R (Interleukin 4 Receptor): IL4R is a receptor for the cytokine interleukin 4 (IL4), which plays a crucial role in the differentiation of naive T cells into Th2 cells. IL4R signaling is vital for promoting B cell proliferation, antibody production, and regulating allergic responses, including IgE production. Dysregulation of this pathway has been associated with asthma, atopic dermatitis, and other allergic conditions, making IL4R a significant target for therapeutic intervention.