Glaxo asthma drug needs kid risk warning: FDA panel
.S. regulatory advisers on Wednesday recommended strengthening safety warnings on GlaxoSmithKline Plc's asthma drug Serevent amid new reports of deaths in children taking the drug. The U.S. Food and Drug Administration expert panel on drugs for children reviewed nine new adverse event reports in kids taking the inhaled treatment, including five deaths over a period of about a year, among other studies finding increased hospitalization and asthma-related death in kids. "The data is very troubling because both the increase in hospitalization and in mortality is so different" from what doctors currently believe, said Thomas Newman, an epidemiologist at the University of California, San Francisco, and panel member. Serevent's use has fallen dramatically since original reports of asthma deaths came to light a few years back. But it is one ingredient in Glaxo's blockbuster asthma drug Advair, and the new worries could impact that drug, which had $6.8 billion in 2006 global sales. At least two panel members said the data was so convincing that Serevent should be pulled from the market. The FDA said it will consider the safety of all drugs in the class, called long-acting beta agonists, at a future meeting. "The members of this committee think this is an urgent public health issue," panel chairwoman Dr. Marsha Rappley, a neurology and psychiatry expert at Michigan State University, said. Novartis also sells a long-acting beta agonist called Foradil. FDA staffers said no date for the meeting has been set. Advair contains Serevent plus a steroid. One theory suggests that the steroid provides a protective effect against the negative impact of Serevent, but panel members rejected that idea. "There is not evidence that the steroid mitigates the risk of asthma-related deaths in patients" taking Serevent, Rappley said. In addition to recommending the label more prominently display the risk of asthma-related deaths, the group said the label needs to more prominently show the drug is recommended only when other treatments fail. The FDA typically accepts the recommendations of these advisory panels. Glaxo presented its own set of data rebutting any suggestion of negative trends when salmeterol, the generic name for Serevent, is used as directed. Kathy Rickard, vice president for respiratory clinical development at Glaxo, said the company believes data shows no increased risk of hospitalization and mortality for Advair and she is not aware of a pending FDA meeting on the issue. Consumer group Public Citizen lists both drugs on its "worst pills" ranking, arguing their risks outweigh benefits. Asthma is one of the most common chronic diseases in children, marked by restricted breathing and wheezing, and often made worse by exercise, cigarette smoke and other factors. About 6.5 million children have the condition in the United States, or about 9 percent of all children, according to the U.S. Centers for Disease Control and Prevention.
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