IL5RA (Interleukin 5 Receptor Alpha): IL5RA is a component of the interleukin 5 receptor, a cytokine involved in the growth and differentiation of eosinophils. It plays a crucial role in immune responses, particularly in allergic reactions and asthma, where eosinophils function as key effector cells. Targeting IL5RA is a therapeutic strategy for diseases characterized by eosinophilia, providing potential treatments for severe asthma and other eosinophil-related disorders.