The majority of researchers who have published articles supporting UK drug giant GlaxoSmithKline's diabetes drug Avandia (rosiglitazone) after it was linked to heart disease in 2007 had financial ties to the company, according to a Mayo Clinic report reported in the British Medical Journal.
A US Senate committee more recently alleged that GSK knew that Avandia, which generated sales of nearly $1.2 billion last year, posed increased risk of heart attacks, a conclusion which has been rejected by the company, and also criticized the nation's drug regulatory body, the Food and Drug Administration, for failings (The Pharma Letter February 22).
The Mayo researchers examined more than 200 articles that appeared after an analysis in the New England Journal of Medicine linked Avandia to a 43% increased risk of heart attacks, and a subsequent clinical trial found no greater danger of heart disease.
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