<prompt> Tocilizumab used against Rheumatoid arthritis is a monoclonal antibody against :Interleukin-6Interleukin-6 receptorInterleukin-5Interleukin-5 receptor  <response>: Monoclonal antibody against IL-6 : Tocilizumab Monoclonal antibody against IL-6 receptor : SarilumabBoth are approved for Rheumatoid arthritis. 