Used in research and development for allergic diseases and asthma, this antibody blocks the activity of interleukin-4 (IL-4), a key cytokine involved in the differentiation of T-helper 2 (Th2) cells and the production of IgE antibodies. By inhibiting IL-4 signaling, it helps reduce inflammatory responses associated with allergic reactions. It has served as a reference tool in studies evaluating anti-IL-4 therapies and in the design of biologics targeting type 2 inflammation. Its application is primarily in preclinical and analytical settings to benchmark the performance of therapeutic antibodies.