STAT6 (Signal Transducer And Activator Of Transcription 6) is a protein that plays a key role in immune signaling pathways, especially those triggered by cytokines like IL-4 and IL-13. It helps regulate allergic inflammation by promoting the development of Th2 cells, production of IgE antibodies, and growth of mast cells. Because of its involvement in allergic responses and asthma, STAT6 is an important target for therapies aimed at controlling immune reactions in allergic diseases.