Congressional investigators have been looking into very serious claims that Avandia's maker silenced medical professionals who attempted to speak out about the potential for cardiovascular problems by using the drug.
Dr. Buse, who is about to become the president of the American Diabetes Association, was an early and frequent critic of Avandia after it reached the market in 1999. In a March 2000 letter to the F.D.A., he said Avandia might raise patients' risk of heart attacks, and he criticized the company's marketing, saying it employed "blatant selective manipulation of data" to overstate the drug's benefits and understate its risks.
More recent questions about Avandia's potential risks, as outlined in a New England Journal of Medicine article last week, have prompted the Congressional hearing. The author of that article, Dr. Steven E. Nissen, a heart specialist at the Cleveland Clinic, has also been called to testify. See the full story on the upcoming congressional hearing.
