Used in the treatment of autoimmune and inflammatory diseases by targeting and neutralizing interleukin-6 (IL-6), a key cytokine involved in chronic inflammation. It modulates the immune response, reducing disease activity in conditions such as rheumatoid arthritis and systemic lupus erythematosus. Also under investigation for cancer therapy due to IL-6's role in tumor growth and immune evasion. Its high specificity allows for targeted intervention with potentially fewer systemic side effects compared to broad immunosuppressants.