Used in the treatment of inflammatory and autoimmune diseases such as rheumatoid arthritis and chronic obstructive pulmonary disease (COPD). It works by neutralizing granulocyte-macrophage colony-stimulating factor (GM-CSF), a key cytokine involved in inflammation and immune cell activation. By blocking GM-CSF, it helps reduce inflammation, slow joint damage, and improve symptoms in patients unresponsive to conventional therapies. Also under investigation for use in severe respiratory conditions including cytokine storm associated with acute lung injury and certain viral infections. Administered via subcutaneous or intravenous routes in clinical settings.