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Glucagon-like peptide-1 (GLP-1) receptor agonist

Tirzepatide for Heart Failure and Obesity (SUMMIT Trial)

Phase 3
Waitlist Available
Research Sponsored by Eli Lilly and Company
Eligibility Criteria Checklist
Specific guidelines that determine who can or cannot participate in a clinical trial
Must have
Have a diagnosis of stable heart failure (NYHA class II-IV) and left ventricular ejection fraction (LVEF) ≥50%
Elevated NT-proBNP (N-terminal pro B-type natriuretic peptide) > 200 pg/ml for participants without atrial fibrillation (AF), or >600 picogram/milliliter (pg/ml) for participants with AF, Structural heart disease (Left atrial enlargement) or Elevated left ventricular filling pressure
Must not have
Have had a major cardiovascular event within the last 90 days of screening
Have had acute decompensated heart failure within 4 weeks of screening
Timeline
Screening 3 weeks
Treatment Varies
Follow Up baseline to study completion (estimated up to 120 weeks)
Awards & highlights
Pivotal Trial

Summary

This trial is testing a medication called Tirzepatide to see if it can help people who have a certain type of heart failure and are also obese. The medication aims to control blood sugar and reduce weight, which may improve their heart condition. Tirzepatide is developed by Eli Lilly and is under investigation for chronic weight management and other conditions.

Who is the study for?
This trial is for adults with heart failure where the heart pumps well (preserved ejection fraction) and who are obese. They must be on stable heart medications, have certain levels of NT-proBNP depending on atrial fibrillation status, experience specific structural heart changes or pressure issues, and have a limited ability to walk distances. Excluded are those with recent major cardiovascular events, acute decompensated heart failure, severe diabetes or kidney disease, other serious health conditions affecting function.
What is being tested?
The study tests Tirzepatide's effectiveness and safety in people with obesity-related preserved ejection fraction heart failure against a placebo. Participants will either receive Tirzepatide or an inactive substance without knowing which one they're getting to compare outcomes fairly.
What are the potential side effects?
While not specified here, common side effects of drugs like Tirzepatide may include gastrointestinal symptoms such as nausea and diarrhea, potential low blood sugar levels especially in diabetics, injection site reactions if it's injectable medication, and possibly increased risk of pancreatitis.

Eligibility Criteria

Inclusion Criteria

You may be eligible if you check “Yes” for the criteria below
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My heart failure is stable, and my heart pumps well.
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My heart test results show high NT-proBNP levels or I have a heart condition.
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My kidney function is reduced, or I've had heart failure worsening in the last year.
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I can walk between 100 to 425 meters without stopping.
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My heart failure is stable, and my heart pumps well.
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My heart tests show high NT-proBNP levels or I have a heart condition.
Select...
My kidney function is reduced or I've had heart failure worsening in the last year.
Select...
I can walk between 100 to 425 meters without stopping.
Select...
My heart failure is stable, and my heart pumps well.
Select...
My heart test results show high NT-proBNP levels or I have a heart condition.
Select...
My kidney function is reduced or I've had heart failure worsening in the last year.
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I can walk between 100 to 425 meters without stopping.

Exclusion Criteria

You may be eligible for the trial if you check “No” for criteria below:
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I have had a major heart event in the last 3 months.
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I had a sudden worsening of my heart failure within the last month.
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I have a serious heart condition related to amyloidosis or valve disease.
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My HbA1c level is 9.5% or higher, or my diabetes is not under control.
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I have had severe diabetic eye disease.
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I have had pancreatitis before.
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My kidney function is very low or I am on dialysis.

Timeline

Screening ~ 3 weeks
Treatment ~ Varies
Follow Up ~baseline to study completion (estimated up to 120 weeks)
This trial's timeline: 3 weeks for screening, Varies for treatment, and baseline to study completion (estimated up to 120 weeks) for reporting.

Treatment Details

Study Objectives

Study objectives can provide a clearer picture of what you can expect from a treatment.
Secondary study objectives
A hierarchical Composite of All-Cause Mortality, HF events, KCCQ-CSS, and 6MWD Category

Side effects data

From 2022 Phase 3 trial • 210 Patients • NCT05024032
40%
Diarrhoea
30%
Nausea
27%
Decreased appetite
23%
Upper respiratory tract infection
19%
Abdominal distension
11%
Vomiting
11%
Gastroenteritis
9%
Flatulence
9%
Abortion induced
7%
Abdominal pain upper
7%
Gingivitis
7%
Amylase increased
7%
Lipase increased
6%
Abdominal pain
6%
Injection site reaction
6%
Menstruation irregular
4%
Hepatic function abnormal
4%
Hyperuricaemia
3%
Uterine polyp
3%
Vaginal infection
3%
Dizziness
1%
Hand fracture
1%
Supraventricular tachycardia
1%
Hiccups
100%
80%
60%
40%
20%
0%
Study treatment Arm
Placebo
10 mg Tirzepatide
15 mg Tirzepatide

Awards & Highlights

Pivotal Trial
The final step before approval, pivotal trials feature drugs that have already shown basic safety & efficacy.

Trial Design

2Treatment groups
Experimental Treatment
Placebo Group
Group I: TirzepatideExperimental Treatment1 Intervention
Tirzepatide administered subcutaneously (SC)
Group II: PlaceboPlacebo Group1 Intervention
Placebo administered SC
Treatment
First Studied
Drug Approval Stage
How many patients have taken this drug
Tirzepatide
2019
Completed Phase 3
~7520

Research Highlights

Information in this section is not a recommendation. We encourage patients to speak with their healthcare team when evaluating any treatment decision.
Mechanism Of Action
Side Effect Profile
Prior Approvals
Other Research
Common treatments for Heart Failure (HF) include medications that reduce the workload on the heart and improve its efficiency. GLP-1 receptor agonists, such as those similar to Tirzepatide, enhance insulin secretion, inhibit glucagon release, and slow gastric emptying, which helps in managing blood glucose levels. These agents also have cardiovascular benefits, which are crucial for HF patients as they can improve heart function and reduce symptoms. Tirzepatide, a dual GIP and GLP-1 receptor agonist, may offer enhanced metabolic and cardiovascular benefits, potentially leading to better outcomes for HF patients.

Find a Location

Who is running the clinical trial?

Eli Lilly and CompanyLead Sponsor
2,667 Previous Clinical Trials
3,227,746 Total Patients Enrolled
67 Trials studying Obesity
54,391 Patients Enrolled for Obesity
Study DirectorEli Lilly and Company
1,383 Previous Clinical Trials
425,410 Total Patients Enrolled
49 Trials studying Obesity
33,933 Patients Enrolled for Obesity

Media Library

Tirzepatide (Glucagon-like peptide-1 (GLP-1) receptor agonist) Clinical Trial Eligibility Overview. Trial Name: NCT04847557 — Phase 3
Obesity Research Study Groups: Tirzepatide, Placebo
Obesity Clinical Trial 2023: Tirzepatide Highlights & Side Effects. Trial Name: NCT04847557 — Phase 3
Tirzepatide (Glucagon-like peptide-1 (GLP-1) receptor agonist) 2023 Treatment Timeline for Medical Study. Trial Name: NCT04847557 — Phase 3
Obesity Patient Testimony for trial: Trial Name: NCT04847557 — Phase 3
~162 spots leftby Nov 2025