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Celecoxib, Naproxen Safety Results Now Published

Date:
November 20, 2006
Source:
Public Library of Science
Summary:
A paper appearing this week in the Public Library of Science journal PLoS Clinical Trials presents findings from a large National Institutes of Health sponsored trial regarding the cardiovascular and cerebrovascular safety of two non-steroidal anti-inflammatory drugs, celecoxib and naproxen. The trial was initially conducted to test whether these drugs might prevent or delay the onset of Alzheimer's disease.

A paper appearing this week in the Public Library of Science journal PLoS Clinical Trials presents findings from a large National Institutes of Health sponsored trial regarding the cardiovascular and cerebrovascular safety of two non-steroidal anti-inflammatory drugs (NSAIDs), celecoxib and naproxen. The trial was initially conducted to test whether these drugs might prevent or delay the onset of Alzheimer's disease.

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The paper describes the occurrence of adverse cardiovascular events, particularly heart attacks and strokes, in some 2500 elderly people who took celecoxib, naproxen, or placebo for up to 3.5 years while participating in the Alzheimer's Disease Anti-inflammatory Prevention Trial (ADAPT). The cardiovascular risk of NSAIDs is currently a controversial and hotly debated topic. One such drug, the selective COX-2 inhibitor rofecoxib (Vioxx) has been withdrawn from the market due to concerns about its cardiovascular safety. There is also debate over the safety of other selective COX-2 inhibitors, including celecoxib. Not much data from randomized trials exists on the long-term safety of non-selective, or "traditional", NSAIDs, such as naproxen.

While ADAPT was designed to test whether celecoxib or naproxen could prevent Alzheimer's disease, the trial's treatments were terminated at the end of 2004 when concerns were emerging regarding the safety of NSAIDs. Now, the safety data from ADAPT is published in PLoS Clinical Trials.

These results do not show increased or decreased risk for cardiovascular harm among people taking celecoxib, as compared to placebo. The data do however suggest some evidence of risk among people taking naproxen, as compared to placebo. Although the ADAPT results with either drug are not definitive due to the early termination of the treatments, they are essential in contributing to the larger body of evidence on the safety of these classes of drugs.

Barbara Martin from the John Hopkins Bloomberg School of Public Health, an author of the study, comments: "Because ADAPT stands alone as a large, long-term, placebo-controlled trial of NSAIDs in the elderly, we believe the data are an important contribution to the medical literature. Particularly for safety data, 'truth' may come in small doses. We firmly believe that results from trials should be published regardless of the direction, magnitude, or statistical significance of the observed results."

In an accompanying perspective, Steve Nissen discusses the circumstances surrounding the premature termination of treatment in ADAPT and on the difficulties surrounding interpretation of these data.

Citation: ADAPT Research Group (2006) Cardiovascular and cerebrovascular events in the randomized, controlled Alzheimer's Disease Anti-inflammatory Prevention Trial (ADAPT). PLoS Clin Trials 1(7): e33. (http://dx.doi.org/10.1371/journal.pctr.0010033)


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The above story is based on materials provided by Public Library of Science. Note: Materials may be edited for content and length.


Cite This Page:

Public Library of Science. "Celecoxib, Naproxen Safety Results Now Published." ScienceDaily. ScienceDaily, 20 November 2006. <www.sciencedaily.com/releases/2006/11/061120060431.htm>.
Public Library of Science. (2006, November 20). Celecoxib, Naproxen Safety Results Now Published. ScienceDaily. Retrieved October 31, 2014 from www.sciencedaily.com/releases/2006/11/061120060431.htm
Public Library of Science. "Celecoxib, Naproxen Safety Results Now Published." ScienceDaily. www.sciencedaily.com/releases/2006/11/061120060431.htm (accessed October 31, 2014).

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