Rituxan (rituximab) for rheumatoid arthritis

 

Question  I have read about a new drug for RA. Rituxan ( rituximab ) I would like to have more info on this drug and it\'s side affects. Have been on methotrexate 2MG tabs.4 tabs once a week. I could not take it, my lungs kept filling with fluid and my primary Dr. took me off of it. I am hoping to find another drug that won\'t be as hard on my system.Would appreciated any info you may have on Rituxam.
 
Answer  Rituxan is a monoclonal antibody that is directed against CD20, a protein that is specifcially found on B cells ( a type of white blood cell).  B cells are important in causing the inflammation of RA and can develop into the cells that make autoantibodies in autoimmune disease.  Rituxan is given by IV infusion and depletes B cells.  I has been shown to work in RA, to prevent symptoms and xray damage.  It is given as  2 doses 2 weeks apart.  Each infusion is long and and take up to 5 hours.  Unique to any other drug, Rituxan is not given again until a patient starts to flare and many patients can go as long as a year before needing redosing.  Side effects such as risk of infection is similar to the anti-TNF drugs.  Rituxan is often given to treat B cell lymphoma(cancers). 

Last update: 12:53 PM Saturday, May 9, 2009

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Alan Matsumoto, MD

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