[Rheumatoid arthritis: current status of therapy]

Rheumatoid Arthritis (RA) is a frequent chronic inflammatory disease characterized by distal, bilateral and symmetrical lesions, leading to joint distortions and articular destructions. RA can also cause severe extra-articular manifestations associated with a poor prognosis. Recent advances in the field of immunopathology of RA have oriented treatment targeting the pro-inflammatory cytokines like tumor necrosis factor-alpha (TNF alpha), interleukin (IL) and IL6. These biotherapies are considered as an important therapeutic progress in the treatment of RA acting at the level of cellular processes responsible for rheumatoid disease. These new therapies are active not only in controlling the disease inflammatory processes but also to stop the radiological course of RA. These new therapies are however efficient as long as prescribed, their interruption being rapidly followed by a flare-up of RA. Multiple adverse events attributed to anti-TNF-alpha have been described especially severe opportunistic infections and tuberculosis. B cells playing a critical role in sustaining the chronic inflammatory process in RA, targeted depleting B cells therapies have been developed in refractory forms of RA giving promising results. However, before any biotherapy prescription especially of anti-TNF-alpha, an initial screening should be achieved to exclude patients with history of untreated tuberculosis, solid cancers, malignant hemopathies or demyelinating disorders. It is also essential to assure a strict follow-up in patients under biotherapy to detect adverse events that can be sometimes severe. Thus, the ratio benefit/risk must be evaluated before any biotherapy prescription.