What is the full analysis of the SUSTAIN-6 (semaglutide) study?

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Last updated: April 28, 2025View editorial policy

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From the FDA Drug Label

The SUSTAIN 6 (NCT01720446) was a multi-center, multi-national, placebo-controlled, double-blind cardiovascular outcomes trial. In this trial, 3,297 patients with inadequately controlled type 2 diabetes and atherosclerotic cardiovascular disease were randomized to OZEMPIC(0. 5 mg or 1 mg) once weekly or placebo for a minimum observation time of 2 years. The primary endpoint, MACE, was the time to first occurrence of a three-part composite outcome which included cardiovascular death, non-fatal myocardial infarction and non-fatal stroke OZEMPIC significantly reduced the occurrence of MACE. The estimated hazard ratio for time to first MACE was 0.74 (95% CI: 0.58,0. 95).

The SUSTAIN-6 study demonstrated that semaglutide significantly reduced the risk of Major Adverse Cardiovascular Events (MACE) in patients with type 2 diabetes and atherosclerotic cardiovascular disease. The study showed a hazard ratio of 0.74 for time to first MACE, indicating a 26% reduction in the risk of MACE compared to placebo 1.

  • Key findings include:
    • Reduced risk of non-fatal myocardial infarction
    • Reduced risk of non-fatal stroke
    • No significant reduction in cardiovascular death The study provides evidence for the cardiovascular benefits of semaglutide in patients with type 2 diabetes and established cardiovascular disease 1.

From the Research

Semaglutide is a highly effective treatment for type 2 diabetes that significantly reduces cardiovascular risk, with the most recent and highest quality study 2 demonstrating its benefits across all age subgroups. The SUSTAIN-6 trial, a randomized, double-blind, placebo-controlled trial, evaluated 3,297 patients who received either semaglutide (0.5 mg or 1.0 mg) or placebo as weekly subcutaneous injections for 104 weeks. The primary outcome showed a 26% reduction in the composite endpoint of cardiovascular death, nonfatal myocardial infarction, or nonfatal stroke with semaglutide compared to placebo. Notably, this benefit was primarily driven by a significant 39% reduction in nonfatal stroke and a 26% reduction in nonfatal myocardial infarction, while cardiovascular death rates were similar between groups. Some key points to consider when prescribing semaglutide include:

  • Its ability to reduce major adverse cardiovascular events (MACE) across all subgroups, including those with established cardiovascular disease or high cardiovascular risk 3
  • Its benefits for glycemic control, with an HbA1c reduction of 0.7-1.0% and weight loss of 3.6-4.9 kg compared to placebo 3
  • Its safety profile, with the most common adverse effects being gastrointestinal, including nausea, vomiting, and diarrhea 3
  • Its potential to provide cardiovascular benefits in people with type 2 diabetes and at high cardiovascular risk across a broad spectrum of kidney function and damage 4
  • Its consistent reduction in MACE risk across age subgroups, with no significant difference in safety profile between age groups 2

Overall, semaglutide is a valuable treatment option for type 2 diabetes patients with established cardiovascular disease or high cardiovascular risk, offering cardiovascular protection beyond glycemic control.

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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