IL-6(Interleukin 6) also known as IFNbeta2 is a cytokine that functions in inflammation and the maturation of B cells. IL-6 plays a pivotal role in immune response, inflammation, and hematopoiesis. IL-6 is primarily secreted by immune cells, including T cells and macrophages, and is crucial for the regulation of the acute phase response during infection and tissue injury. IL-6′s ability to induce fever and stimulate the production of acute phase proteins in the liver underscores its importance in host defense mechanisms. IL-6 achieves its effects by binding to a specific receptor that forms a trimeric complex, leading to the activation of intracellular signaling pathways, including the JAK/STAT pathway, which ultimately influences gene expression related to immune and inflammatory responses.