Rheumatoid arthritis drug masitinib found effective

A clinical trial of masitinib, a drug in development for the treatment of rheumatoid arthritis, has shown it to be well tolerated and effective, revealed by researchers in BioMed Central's journal Arthritis Research and Therapy.

Rheumatoid arthritis is a chronic autoimmune condition which causes systemic inflammation, particularly affecting the joints. The ultimate cause remains unknown. The disease affects women more often than men and the prevalence rated is estimated to be 1%.

Olivier Hermine worked with researchers from several French hospitals to carry out this trial in 43 patients with arthritis resistant to current treatments. He said, "We are encouraged from this study that masitinib not only appears to be effective, but that within the first 3 months of treatment the worst of its side-effects were over, possibly making it suitable for long-term treatment regimens for rheumatoid arthritis".

Masitinib inhibits the activity of mast cells, a component of the immune system thought to be involved in the pathogenesis of rheumatoid arthritis. The clinical improvement described in the study was supported by laboratory evidence of reduced inflammation. The authors found that adverse effects of the treatment were mainly mild to moderate.

Alain Moussy from AB Science, a pharmaceutical company who are developing masitinib for multiple indications in human and animal medicine said, "This is a milestone article for us, being the first publication of masitinib in a human study". Speaking about the drug, Alain Moussy said, "Our preclinical studies have shown that masitinib selectively targets cell receptors known to be involved in various disease processes but does not affect those associated with toxicity, particularly cardiotoxicity".

Masitinib is already approved by EMEA and under registration review with FDA for canine mast cell tumours (trade name Masivet®). The drug is also in numerous phase II/III clinical trials, including further arthritis related studies, which are intended to fully exploit its potential therapeutic benefits over a wide range of cancers, inflammatory diseases, and neurological indications.


(Editor compiled and published Rheumatoid arthritis drug masitinib found effective at HealthNewsTrack on June 27, 2009 sourced from BioMed Central - http://www.biomedcentral.com/)

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