The first FDA approval of this year is Tocilizumab, approved on January 8th, under the trade name Actemra. Tocilizumab is a first-in-class interleukin-6 (IL-6) receptor -inhibiting monoclonal antibody drug, and is indicated for the treatment of rheumatoid arthritis in adults who have had an inadequate response to one or more tumor necrosis factor (TNF) antagonist therapies. Rheumatoid arthritis is a chronic and debilitating, systematic inflammatory disorder, which affects principally synovial tissues. Tocilizumab ATC code is L04AC07 . Tocilizumab works by blocking the signalling of IL-6, an immune system soluble cytokine that is overproduced in patients with rheumatoid arthritis. Other biological therapies for RA include tumor necrosis factor-α (TNF-α) blockers ( e.g, Golimumab), IL-1 blockers ( e.g. , Anakinra), monoclonal antibodies against B cells (e.g., Rituximab) and T cell costimulation inhibitors ( e.g. , Abatacept). However, all these act through binding to differe...