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Semaglutide cuts cardiovascular events in landmark trial


 

The popular but expensive weight loss drug semaglutide (Wegovy, significantly reduced major adverse cardiovascular events (MACE) by 20% when given to patients, compared with those receiving placebo, in the pivotal SELECT trial, with more than 17,000 enrolled people with overweight or obesity and established cardiovascular disease (CVD), but no diabetes.

The finding should fuel improved patient access to this glucagon-like peptide-1 (GLP-1) agonist weight-loss agent that has historically been hindered by skepticism among U.S. payers, many of whom have criticized the health benefits and cost effectiveness of this drug in people whose only indication for treatment is overweight or obesity.

According to top-line results from SELECT released by Novo Nordisk on Aug. 8, the people randomly assigned to receive weekly 2.4-mg subcutaneous injections of semaglutide showed a significant 20% reduction in their incidence of the combined endpoint of cardiovascular death, nonfatal myocardial infarction, and nonfatal stroke. The announcement added that semaglutide treatment also significantly linked with a drop in the incidence of each of these individual three endpoints; the magnitude of these reductions, however, wasn’t specified, nor was the duration of treatment and follow-up.

The results also showed a level of safety and patient tolerance for weekly 2.4-mg injections of semaglutide that were consistent with prior reports on the agent. Semaglutide as Wegovy received marketing approval from the U.S. Food and Drug Administration in 2021 for weight loss, and in 2017 for glucose control in people with type 2 diabetes, at a weekly maximum dose of 2.0 mg (for which it’s marketed as Ozempic).

SELECT began in 2018 and randomly assigned 17,604 adults aged 45 years and older at more than 800 sites in 41 countries. The company’s announcement noted that the trial had accrued a total of 1,270 study participants with a first MACE event but did not break this total down based on treatment received.

‘A good result for patients’

“The topline results from SELECT are exciting, as preventing heart attacks and stroke with a drug that also lowers weight is very important for many patients, especially if the data also show – as I suspect they will – a meaningful improvement of quality of life for patients due to associated weight loss,” commented Naveed Sattar, PhD, a professor of metabolic medicine at the University of Glasgow who was not involved with the study.

Dr. Naveed Sattar, University of Glasgow

Dr. Naveed Sattar

“This is a good result for patients,” added Dr. Sattar, who also noted that “we do not know to what extent the weight loss effects of semaglutide – as opposed to its other direct effects on blood vessels or the heart – account for the 20% reduction in cardiovascular events, and more data are needed to try to work this out.”

Despite this lack of current clarity over the role that weight loss by itself played in driving the observed result, the SELECT findings seem poised to reset a long-standing prejudice against the medical necessity and safety of weight-loss agents when used for the sole indication of helping people lose weight.

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