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New Rheumatoid Arthritis Drugs Work Better Than Standard Anti-inflammatories, Study Suggests

Date:
April 28, 2008
Source:
BMC Musculoskeletal Disorders
Summary:
The latest class of drugs used to treat rheumatoid arthritis are better than standard anti-inflammatories, according to a new study. Analysis of the combined results of thirteen trials showed that anti-TNF± drugs, given at recommended doses, were better than the usual treatments, such as methotrexate, for treating RA. Patients who had previously seen little benefit from methotrexate alone showed a better response with combined anti-TNF± plus methotrexate therapy.

A new study suggests that the latest class of drugs used to treat rheumatoid arthritis (RA) are better than standard anti-inflammatories.

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RA is a chronic, debilitating, inflammatory disease of the joints, which is usually treated with anti-inflammatory drugs such as methotrexate or steroids. However, the discovery that a protein from white blood cells, known as tumour necrosis factor alpha (TNF±), caused some of the symptoms of RA, led to the development of novel drugs which block TNF±. This group of drugs, known as anti-TNF± drugs (which include infliximab, etanercept and adalimumab), are now commonly used to treat RA.

However, there have been no 'head-to-head' comparisons of the new anti-TNF± drugs in terms of safety or efficacy for the treatment of RA.

Alberto Alonso-Ruiz of the Cruces Hospital in Barakaldo, Vizcaya, Spain and colleagues at the Donostia Hospital and the University of the Basque Country, systematically searched for research on the use of anti-TNF± drugs in RA patients. They found thirteen clinical trials including over 7000 patients. The researchers then analyzed the trial results, systematically logging patient benefits and side effects for different doses of the three main anti-TNF± drugs.

Analysis of the combined results of all thirteen trials showed that anti-TNF± drugs, given at recommended doses, were better than the usual treatments, such as methotrexate, for treating RA. Patients who had previously seen little benefit from methotrexate alone showed a better response with combined anti-TNF± plus methotrexate therapy.

The team found that all three drugs were very similar in their benefits even at doses higher than those recommended by the drug manufacturer. This class of drugs, while very effective, does have a higher frequency of adverse side-effects. Patients on infliximab were most likely to drop out of a trial because of these side effects. In contrast, patients using etanercept had the lowest withdrawal rate. The researchers point out that this could be because this drug was not reported as being used at higher than recommended dosage in the trials.

"Anti-TNF± drugs such as infliximab, adalimumab and etanercept all appear to be effective in the treatment of RA" said Alonso-Ruiz. "Performing comparisons of new drugs is vital for measuring safety/efficacy relationships and monitoring adverse side-effects."

Journal reference: Tumor necrosis factor drugs in rheumatoid arthritis: systematic review and meta-analysis of efficacy and safety. Alberto Alonso-Ruiz, Jose Ignacio Pijoan, Eukene Ansuategui, Arantxa Urkaregi, Marcelo Calabozo and Antonio Quintana. BMC Musculoskeletal Disorders (in press)


Story Source:

The above story is based on materials provided by BMC Musculoskeletal Disorders. Note: Materials may be edited for content and length.


Cite This Page:

BMC Musculoskeletal Disorders. "New Rheumatoid Arthritis Drugs Work Better Than Standard Anti-inflammatories, Study Suggests." ScienceDaily. ScienceDaily, 28 April 2008. <www.sciencedaily.com/releases/2008/04/080417084026.htm>.
BMC Musculoskeletal Disorders. (2008, April 28). New Rheumatoid Arthritis Drugs Work Better Than Standard Anti-inflammatories, Study Suggests. ScienceDaily. Retrieved January 31, 2015 from www.sciencedaily.com/releases/2008/04/080417084026.htm
BMC Musculoskeletal Disorders. "New Rheumatoid Arthritis Drugs Work Better Than Standard Anti-inflammatories, Study Suggests." ScienceDaily. www.sciencedaily.com/releases/2008/04/080417084026.htm (accessed January 31, 2015).

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