Study summary · research use only
Efficacy and Safety of GLP-1 Medicines for Type 2 Diabetes and Obesity
Plain-language summary
Paraphrased from the published abstract below — not a verdict on whether anything works.
This review discusses glucagon-like peptide 1 receptor agonists (GLP-1RA) for type 2 diabetes and obesity in humans, including cardiorenal data in select patient populations. It describes ongoing trials examining these agents for additional indications, including metabolic liver disease, peripheral artery disease, Parkinson disease, and Alzheimer disease, and newer molecules such as tirzepatide (a GIP-GLP-1 receptor coagonist), maritide (which blocks GIP and activates the GLP-1 receptor), and retatrutide and survodutide (which activate glucagon and GLP-1 receptors together). The author discusses data on muscle strength, bone density and fractures, exercise capacity, gastrointestinal motility, retained gastric contents and anesthesia, pancreatic and biliary tract disorders, and cancer risk, and notes newer agents may inform personalized approaches for cardiometabolic disorders.
Abstract
The development of glucagon-like peptide 1 receptor agonists (GLP-1RA) for type 2 diabetes and obesity was followed by data establishing the cardiorenal benefits of GLP-1RA in select patient populations. In ongoing trials investigators are interrogating the efficacy of these agents for new indications, including metabolic liver disease, peripheral artery disease, Parkinson disease, and Alzheimer disease. The success of GLP-1-based medicines has spurred the development of new molecular entities and combinations with unique pharmacokinetic and pharmacodynamic profiles, exemplified by tirzepatide, a GIP-GLP-1 receptor coagonist. Simultaneously, investigational molecules such as maritide block the GIP and activate the GLP-1 receptor, whereas retatrutide and survodutide enable simultaneous activation of the glucagon and GLP-1 receptors. Here I highlight evidence establishing the efficacy of GLP-1-based medicines, while discussing data that inform safety, focusing on muscle strength, bone density and fractures, exercise capacity, gastrointestinal motility, retained gastric contents and anesthesia, pancreatic and biliary tract disorders, and the risk of cancer. Rapid progress in development of highly efficacious GLP-1 medicines, and anticipated differentiation of newer agents in subsets of metabolic disorders, will provide greater opportunities for use of personalized medicine approaches to improve the health of people living with cardiometabolic disorders.
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