Rituximab: a new therapeutic alternative in rheumatoid arthritis.

Rituximab is a chimeric anti-CD20 monoclonal antibody targeting B cells, which play numerous pathogenic roles in rheumatoid arthritis (RA). This review summarises the results of three controlled studies using rituximab in RA and the data regarding tolerance and repeated treatment in 1053 patients included in the clinical studies. These studies demonstrated the efficacy of rituximab in patients with RA, including those who had been unresponsive or intolerant to one or more TNF inhibitor therapies. Rituximab was globally well-tolerated. The current informations on the efficacy and the tolerance of rituximab led us to propose recommendations for the screening of patients, the use of rituximab, and the follow-up of patients. A longer follow-up duration and data from off-trial patients, included in registries, are now required.