DECODE - Haemodynamic Effects Of Semaglutide and Tirzepatide - a Series of Pilot Studies
NCT07483801 · Not yet recruiting
Last updated 2026-05-28This clinical trial tests how two diabetes medications, semaglutide and tirzepatide, affect blood flow in adults with cardiovascular disease.
What this study is testing ClinicalTrials.gov NCT07483801 ↗
Description as written by the study sponsor.
What is the research question? Semaglutide and tirzepatide cause weight loss and blood pressure reduction. However, weight loss only partially explains the blood pressure reduction. Based on previous studies, there might be direct effects in the cardiovascular system. In forearm blood flow studies, semaglutide and tirzepatide will be infused into the brachial artery to investigate their effects on the function of blood vessels. In systemic studies, semaglutide and tirzepatide will be infused into systemic circulation to investigate their effects on heart and blood vessels. There are three different populations being looked at for this study: participants with normal weight and normal blood pressure, participants with obesity and normal blood pressure, and participants with obesity and high blood pressure. There are six sub-studies each with different visit schedules. The minimum participant study duration (including follow-up phone call) would be 2 days, while the maximum participant study duration would be approximately 2 - 2.5 months. The overall study duration is expected to be approximately 18 months.
Treatments tested
- semaglutide Drug
Semaglutide: GLP-1 analogue
- Tirzepatide Drug
Tirzepatide: dual GIP/GLP-1 receptor agonist
| Main thing measured | Sub-study 1A:Change in forearm blood flow parameters after infusion of semaglutide (Ratio) |
|---|---|
| Sponsor | Cambridge University Hospitals NHS Foundation Trust |
| Conditions studied | Cardiovascular Diseases |
| GLP-1 drugs | semaglutide, tirzepatide |
Full protocol, eligibility, and contacts on ClinicalTrials.gov NCT07483801 ↗