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UPDATE 2-US advisers urge FDA to address antipsychotics in kids
* Concerns of weight gain, diabetes in kids on medication
* Pediatric panel urges more studies of impact on children
* FDA revising Abilify label to bolster metabolic warnings
* Millions of prescriptions written for kids since 2009 (Adds latest study, comments, prescription details)
By Alina Selyukh
GAITHERSBURG, Md., Sept 22 (Reuters) - U.S. pediatric health advisers on Thursday urged drug regulators to continue studying weight gain and other side-effects of antipsychotic drugs as they are increasingly taken by children.
Significant numbers of U.S. children are receiving drugs to tame aggression, attention deficit disorder and other mental problems, even though there is little conclusive data to show exactly how the medications work or whether they damage kids' health.
The pediatric advisory panel on Thursday listened to preliminary results of a study sponsored in part by the FDA that, inconclusively still, compared whether some antipsychotic drugs put children at a higher risk of developing diabetes than others.
Similar to the recommendations the panel has made in previous years, it voted 16-1 to support the U.S. Food and Drug Administration's routine safety monitoring of the new generation of antipsychotics.
But the panel did so with a caveat that the agency specifically look at how to clarify the drugs' labels to highlight concerns about their impact on children, namely the risks of weight gain and diabetes.
"There is serious concern that children may be at a higher risk for serious adverse effects and we just don't have sufficient data to answer that question," said Dr. Jonathan Mink, a child neurology expert from the University of Rochester Medical Center.
Dr. Jeffrey Wagener, a pediatric pulmonologist from the University of Colorado Medical School, was the one adviser to vote "no" out of concern that wouldn't get regulators closer to dealing with the risks of using antipsychotics in children.
"I don't see how the FDA is responding to the Dec. 8, 2009 request by this committee in a thorough fashion," he said. "It's taken them two years to not respond to that that we need to be more than in the observational role."
The FDA in the next month to six weeks will release a revised label for Abilify, a drug sold by Bristol-Myers Squibb Co (BMY.N) and Otsuka Pharmaceutical (4578.T) and approved to treat schizophrenia in adolescents, bipolar disorder in children 10 to 17 years old and irritability associated with autism in those as young as six.
"We ask that with this upcoming revision that you carefully consider the language around pediatric use and adverse events," said Dr. Geoffrey Rosenthal, the committee's chair and director of Pediatric and Congenital Heart Center at the University of Maryland Medical Center.
Abilify's new label will detail the drug's latest clinical trials, warn of metabolic concerns and remind doctors to monitor weight and symptoms of diabetes in all patients, said Dr. Thomas Laughren, FDA's psychiatry products chief. The pediatric section of the label would contain a reference to those warnings, he said..
Such revisions, which are already incorporated into Johnson & Johnson's (JNJ.N) antipsychotic medication Invega Sustenna, are being considered for other similar drugs on a case by case basis, Laughren said.
The new generation of antipsychotic medications has raised a wave of concerns as they are increasingly being prescribed for a host of uses and for younger and younger patients, with little conclusive research addressing their impact on children and sometimes with little evidence they work. [ID:nN06163600]
Newer antipsychotics include J&J's Risperdal, known generically as risperidone; Eli Lilly & Co's (LLY.N) Zyprexa or olanzapine; AstraZeneca's (AZN.L) Seroquel or quetiapine; and Abilify, known generically as aripiprazole.
U.S. researchers have found that the drugs' use in children increased by 65 percent from 2002 to 2009, primarily through prescriptions for teenagers.
From fall 2009 to spring of this year, 1.9 million prescriptions of Abilify alone were dispensed to patients under 18, including even 875 prescriptions for toddlers younger than 2, according to FDA research.
Most commonly, the prescriptions were for bipolar disorder in teenagers and preschoolers, and for affective psychoses in children between the ages of seven and 12.
Advisers also voted unanimously to require the FDA to show them label revisions and report back in the next year or 18 months on progress in designing more studies of the drugs in children. (Editing by Tim Dobbyn and Steve Orlofsky)
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