Two popular drugs to treat type 2 diabetes performed best in large clinical trial

In a large clinical trial that directly compared four drugs commonly used to treat type 2 diabetes, researchers from the University of Minnesota Medical School aided in the discovery that insulin glargine and liraglutide performed best. The results were published in a pair of papers in The New England Journal of Medicine.

The GRADE study is the first to compare the efficacy of four drugs commonly used to treat type 2 diabetes when added to metformin in people with short-duration diabetes. It found that liraglutide was superior to glimepiride and sitagliptin in controlling blood sugars. This study provides evidence that clinicians can use in developing treatment plans with their patient."

Elizabeth Seaquist, MD, Department of Medicine Chair at the U of M Medical School and Endocrinologist with M Health Fairview

The study found that participants taking metformin plus liraglutide or insulin glargine achieved and maintained their target blood levels for the longest time compared to sitagliptin or glimepiride. This translated into approximately six months more time with blood glucose levels in the target range compared with sitagliptin, which was the least effective in maintaining target levels. Treatment effects did not differ based on age, sex, race or ethnicity. However, none of the combinations overwhelmingly outperformed the others.

Launched in 2013, the Glycemia Reduction Approaches in Diabetes: A Comparative Effectiveness (GRADE) Study was conducted at centers across the country, including the University of Minnesota. It was designed to compare four major medications approved by the Food and Drug Administration (FDA) at the time GRADE started to treat diabetes in combination with metformin. While there is general agreement among health care professionals that metformin combined with diet and exercise is the best early approach in diabetes care, there is no consensus on what to do next to best keep high blood glucose in check.

The GRADE Study was supported by a grant from the National Institute of Diabetes and Digestive and Kidney Diseases (U01DK098246). Additional support was provided by the National Heart, Lung, and Blood Institute; National Institute of General Medical Sciences; National Center for Advancing Translational Sciences; the Centers for Disease Control and Prevention; and the American Diabetes Association. The Department of Veterans Affairs provided resources and facilities. Material support in the form of donated medications and supplies has been provided by Becton, Dickinson and Company, Bristol-Myers Squibb, Merck & Co., Inc., Novo Nordisk, Roche Diagnostics, and Sanofi. ClinicalTrials.gov number: NCT01794143.

Source:
Journal reference:

The GRADE Study Research Group., (2022) Glycemia reduction in type 2 diabetes — glycemic outcomes. New England Journal of Medicine. doi.org/10.1056/NEJMoa2200433.

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