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Pfizer continues to research new ways of treating osteoarthritis pain. Two studies to be presented highlight a new compound in development and new data for Celebrex (celecoxib) in the treatment of osteoarthritis pain. Results from a Phase 2 study exploring the safety and efficacy of tanezumab, a novel biologic designed to block nerve growth factor, show that treatment once every eight weeks may significantly decrease pain in patients suffering from moderate to severe osteoarthritis pain in the knee. In the trial, approximately 75 percent of patients in both the tanezumab 100 and 200 µg/kg treatment groups experienced a 50 percent reduction in knee pain as compared to 26 percent of patients in the placebo group. In the study, the most common adverse events associated with tanezumab include headache, upper respiratory tract infection, paresthesia (abnormal sensations), hypoesthesia (decreased sensations) and arthralgia (joint aches). Another late-breaking study evaluated continuous use of daily Celebrex treatment over a 22-week period compared to intermittent use of the medicine in preventing spontaneous OA flares. The study showed that continuous use resulted in 42 percent fewer OA flare episodes than the intermittent use. The results from the study also demonstrated that there were no significant differences in overall adverse events between the intermittent and continuous use groups. According to the Arthritis Foundation, osteoarthritis affects 27 million Americans. Recent data show that one in two Americans are at risk for knee osteoarthritis over their lifetime. Loss of joint function as a result of osteoarthritis is a major cause of work disability. |
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