Massive study pits tirzepatide against rivals for heart protection
NCT ID NCT06779929
First seen Jun 24, 2026 · Last updated Sep 18, 2026 · Updated 2 times
Summary
This completed study looked at insurance claims data from 70,000 people with type 2 diabetes and established heart disease to compare the heart-related risks of three diabetes drugs: tirzepatide, dulaglutide, and semaglutide. The goal was to see if any of these drugs was linked to fewer heart attacks, strokes, or deaths. Because it used existing data rather than a controlled experiment, the findings can suggest but not prove which drug might be safer for the heart.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- tirzepatide, dulaglutide, semaglutide
- What this could lead to
- If this study shows one drug is better at preventing heart attacks or strokes, it could guide doctors to choose the most effective treatment for people with type 2 diabetes and heart disease.
- What could go wrong
- This is an observational study using insurance claims, not a randomized trial, so results may be influenced by unmeasured factors. It cannot prove cause and effect.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Participants
-
70,000 people
The number who actually took part.
- Started
-
Nov 2024
- Finished
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Mar 2026
- Lead sponsor
-
Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
Patients \> 40 years old with T2D and established atherosclerotic cardiovascular disease.
- Ages
-
40 years and older
- Sex
-
Anyone
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Patients with T2D who were new users of tirzepatide or new users of dulaglutide * AND established ASCVD defined as: * History of Myocardial Infarction (MI) or MI sequela * Unstable or stable angina * Coronary atherosclerosis disease or procedures * Ischemic stroke * Peripheral arterial disease or procedures * Atherosclerotic cerebrovascular disease or cerebrovascular procedures * Lower-limb amputation * Age \>= 40 years old * Patients with at least 180 days of continuous health plan enrollment before and including the treatment initiation date Exclusion Criteria: * Patients with Type 1 diabetes mellitus * Patients with missing age or sex information * Patients with history of proliferative diabetic retinopathy, panretinal photocoagulation, vitreous hemorrhage, or intravitreal anti-VEGF injection * Patient within history of left ventricular assisted device (LVAD) or heart transplant * Patients with any previous organ transplants * Patients with acute of chronic pancreatitis * Patients with gastroparesis, bowel obstruction or bariatric surgery * Patient with CKD Stage 5, end stage kidney disease, kidney transplant, or hemodialysis * Patients with multiple endocrine neoplasm syndrome type 2 (MEN-2) * Patient with cancer * Pregnant women * Patient with diabetic ketoacidosis or HONK within the last year to treatment initiation * Patients with acute hepatitis within the last year to treatment initiation * Patients with elevated serum calcitonin level within the last year to treatment initiation * Previous exposure to GLP-1RA or pramlintide during the 180-days washout period and including treatment initiation date * Patients with severe hypoglycemia within the last 6 months to treatment initiation * Patients with hospitalization for heart failure within the last 60 days to treatment initiation * Patient with acute coronary syndrome, ischemic stroke, peripheral arterial disease, or coronary or cerebrovascular procedure within the last 60 days to treatment initiation * Patients with prescription dispensing for both tirzepatide and dulaglutide on treatment initiation date
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
-
Brigham and Women's Hospital
Boston, Massachusetts, 02120, United States
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