Skip to content

A Study of Retatrutide (LY3437943) in the Maintenance of Weight Reduction in Individuals With Obesity

A Phase 3b, Randomized, Double-Blind, Placebo-Controlled Study to Evaluate Retatrutide Treatment in the Maintenance of Weight Reduction in Individuals With Obesity

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06859268
Acronym
TRIUMPH-6
Enrollment
643
Registered
2025-03-05
Start date
2025-03-05
Completion date
2028-04-01
Last updated
2026-03-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Obesity

Brief summary

This is a study of retatrutide in participants with obesity. The main purpose is to learn more about how retatrutide maintains body weight loss. The study will have two treatment phases: an 80 week lead-in phase in which all participants will take retatrutide dose 1 and a 36 week randomized, double-blinded phase in which participants will either take retatrutide dose 1, retatrutide dose 2, or switch to placebo. Participation in the study will last around 125 weeks.

Interventions

DRUGRetatrutide

Administered SC

DRUGPlacebo

Administered SC

Sponsors

Eli Lilly and Company
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Intervention model description

Phase 3b

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Have obesity and a history of at least one self-reported unsuccessful dietary effort to reduce body weight

Exclusion criteria

* Have a self-reported change in body weight \>5 kilograms (kg) (11 pounds) within 90 days before screening * Have a prior or planned surgical treatment for obesity * Have a prior or planned endoscopic procedure and/or device-based therapy for obesity * Have Type 1 Diabetes, Type 2 Diabetes, or any other type of diabetes * Have a family or personal history of medullary thyroid carcinoma (MTC) or multiple endocrine neoplasia syndrome type 2 (MEN-2) * Have had within the past 90 days before screening: * acute myocardial infarction * cerebrovascular accident (stroke) * hospitalization for unstable angina, or * hospitalization due to congestive heart failure * Have New York Heart Association Functional Classification Class IV congestive heart failure * Have a history of chronic or acute pancreatitis * Have taken weight loss drugs, including over-the-counter medications, within 90 days prior to screening

Design outcomes

Primary

MeasureTime frame
Percent Change from Baseline in Body WeightWeek 0, Week 116

Secondary

MeasureTime frame
Change from Baseline in Waist CircumferenceWeek 0, Week 116
Percentage of Body Weight Reduction Achieved at Week 80 that is Maintained at Week 116Week 0, Week 80, Week 116
Change from Baseline in Impact of Weight on Quality of Life-Lite Clinical Trials Version (IWQOL-Lite-CT)Week 0, Week 116

Countries

Canada, United Kingdom, United States

Contacts

STUDY_DIRECTORCall 1-877-CTLILLY (1-877-285-4559) or 1-317-615-4559 Mon - Fri 8 AM - 8 PM Eastern time (UTC/GMT - 5 hours, EST)

Eli Lilly and Company

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 4, 2026