WASHINGTON — GlaxoSmithKlines much-maligned diabetes drug Avandia will no longer be restricted to certain patients after U.S. regulators determined new data show the medicine doesnt raise heart risks.
The Food and Drug Administration reviewed independent researchers reanalysis of a GSK study, called Record, that confirmed Avandia doesnt raise the risk of death, heart attack or stroke. Avandias reign atop the diabetes market as a $3 billion-a-year medicine began to end after a 2007 New England Journal of Medicine article found a 43 percent increased risk of heart attack in patients taking the drug in a combination of results from smaller studies.
Given these new results, our level of concern is considerably reduced; thus, we are requiring the removal of certain prescribing restrictions, Janet Woodcock, director of the FDAs Center for Drug Evaluation and Research, said in a statement.
Since researchers needed to know who was on Avandia, the Record study wasnt blinded, a method that prevents participants in a clinical trial from knowing who is on the drug. The data were reanalyzed by Duke University School of Medicine. Thomas Marciniak, the medical team leader in the FDAs Division of Cardiovascular and Renal Products, questioned in June whether Records trial design biased the data, rendering Dukes assessment moot.
FDA advisers met in June to discuss the reanalysis of Record and voted that restrictions on the drug should be lifted.
The agency Monday also released London-based GSK from a requirement to conduct a trial comparing Avandia to Takeda Pharmaceuticals Actos.
GSK employs about 4,000 people in Research Triangle Park, which is the companys North American headquarters. It also has about 600 workers at its manufacturing plant in Zebulon, where Avandia was once manufactured.
GSK welcomes the decision of the FDA and appreciates the agencys robust review of the science with regard to Avandia, the company said in an emailed statement. GSK maintains its view that Avandia is a safe and effective treatment for Type 2 diabetes when used appropriately.
GSK plans to work with the FDA to implement changes to its label and respond to the agencys decision to ease restrictions on Avandia, the company said in the statement.
Avandia was approved in 1999, and sales had dropped to $9.5 million last year. The patent on the drug expired in 2011.
The FDA restricted Avandia in 2010 in the U.S. to patients who couldnt control their diabetes on other medications and mandated doctors and pharmacies that prescribe and dispense the drug be certified. Patients, pharmacies and doctors will no longer be required to enroll in a program that monitors Avandia use; rather, Glaxo will be responsible for ensuring prescribers are given training on cardiovascular risk, the FDA said.
GSK paid a record $3 billion fine last year in the U.S. for illegally marketing medicines. As part of the settlement, the drugmaker pleaded guilty to failing to report safety data on Avandia. European regulators ordered the treatment pulled from their market in 2010.
Staff writer David Bracken contributed.