Results from a landmark study involving more than 9,000 people showed that the high blood pressure medicine valsartan delayed progression to type 2 diabetes in patients with cardiovascular disease or risk factors and impaired glucose tolerance (IGT), a common pre-diabetic condition.
Primary data from the NAVIGATOR (Nateglinide And Valsartan in Impaired Glucose Tolerance Outcomes Research) trial, initiated in 2001, were presented today at the American College of Cardiology Annual Meeting in Atlanta and simultaneously published online in the New England Journal of Medicine. The study assessed whether valsartan or the oral anti-diabetic agent nateglinide could delay progression to diabetes or reduce the incidence of cardiovascular events in people with IGT and cardiovascular disease or risk factors.
"Obesity and hypertension are global health epidemics, and many of these patients have problems with impaired glucose tolerance. From numerous studies, we know that patients with IGT have an increased risk for type 2 diabetes and cardiovascular disease," said Dr. Robert Califf, Vice Chancellor for Clinical Research at Duke University School of Medicine and Director of the Duke Translational Medicine Institute, Durham, NC, USA. "It is critical that we continue to search for pharmacologic interventions that may reduce the incidence of diabetes and cardiovascular disease while emphasizing to our patients that weight loss, as little as 5%, may improve outcomes."
Patients in the study with IGT and cardiovascular disease or other risk factors, who received valsartan for at least five years in addition to background therapy and a study-specific lifestyle-modification program, achieved a statistically significant 14% reduction in their risk of developing new-onset diabetes compared to those in the non-valsartan group.