Tirzepatide Yields Sustained Weight Reduction in Obesity, Prediabetes
MONDAY, Nov. 18, 2024 -- For patients with obesity and prediabetes, three years of tirzepatide yields substantial and sustained weight reduction and a reduced risk for progression to type 2 diabetes, according to a study published online Nov. 13 in the New England Journal of Medicine.
Ania M. Jastreboff, M.D., Ph.D., from the Yale School of Medicine in New Haven, Connecticut, and colleagues performed a phase 3, double-blind trial involving 2,539 participants with obesity (1,032 of whom also had prediabetes), who were randomly assigned to receive tirzepatide at a once-weekly dose of 5, 10, or 15 mg or placebo in a 1:1:1:1 ratio. The current analysis included the participants with obesity and prediabetes who received tirzepatide or placebo for 176 weeks followed by an off-treatment period of 17 weeks.
The researchers found that the mean percentage change in body weight at 176 weeks was −12.3, −18.7, and −19.7 percent for those receiving 5-, 10-, and 15-mg tirzepatide doses, respectively, compared with −1.3 percent for those receiving placebo. Receipt of a diagnosis of type 2 diabetes occurred in fewer participants in the tirzepatide groups versus the placebo group (1.3 versus 13.3 percent; hazard ratio, 0.07). After 17 weeks off treatment, 2.4 and 13.7 percent of those who received tirzepatide and placebo, respectively, had type 2 diabetes (hazard ratio, 0.12). Apart from COVID-19, the most common adverse events were gastrointestinal, most of which were mild-to-moderate in severity.
"Tirzepatide therapy resulted in sustained weight reduction that was accompanied by a markedly lower risk of progression to type 2 diabetes than that with placebo," the authors write.
Several authors disclosed ties to pharmaceutical companies, including Eli Lilly, which manufactures tirzepatide and funded the study.
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