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A Master Protocol of Multiple Agents in Adults With Metabolic Dysfunction-Associated Steatotic Liver Disease (SYNERGY-Outcomes)

A Master Protocol for a Randomized, Controlled, Clinical Trial of Multiple Pharmacologic Agents in Adult Participants With Metabolic Dysfunction-Associated Steatotic Liver Disease Who Are at Increased Risk of Developing Major Adverse Liver Outcomes

Who can join

Ages 18 and older · All sexes

Inclusion Criteria:

* Have liver fat content ≥8%
* Have ELF score of ≥9 and ≤10.8 at screening
* Have VCTE LSM ≥10 kilopascal (kPa) and \<20 kPa at screening

Exclusion Criteria:

* Have any other type of liver disease other than MASLD
* Have a body mass index (BMI) \<25 kilogram per square meter (kg/m2)
* Prior decompensated liver disease (history of esophageal/gastric varices, ascites, hepatic encephalopathy)
* Have lost more than 11 pounds within the 3 months prior to screening
* Have a hemoglobin A1c (HbA1c) greater than 10%
* Have type 1 diabetes

About the study

The main purpose of the SYNERGY-OUTCOMES study is to find out whether retatrutide and tirzepatide can prevent major adverse liver outcomes (MALO) in people with high-risk metabolic dysfunction-associated steatotic liver disease (MASLD). The study will enroll adults who have MASLD based on non-invasive tests (NITs), which indicate they are more likely to develop MALO. Participants will be randomly assigned within a Master Protocol to receive either retatrutide (N1T-MC-RT01), tirzepatide (N1T-MC-TZ01) or placebo. The trial plans to enroll about 4,500 adults and will run for approximately 224 weeks. Participants may have up to approximately 25 to 30 clinic visits throughout the study to monitor their health, complete study procedures, and assess liver function and disease progression.

Once the study is complete, eligible participants may participate in an optional 2-year extension study, in which all participants will receive either retatrutide or tirzepatide, even if they received placebo in the main study.

What is being tested

• Tirzepatide (drug)
• Retatrutide (drug)
• Placebo (drug)

Sponsor: Eli Lilly and Company · Participants: 4,500 · Started: Oct 15, 2025

Contact the study team

• Trial questions or participation questions: 1-877-CTLILLY (1-877-285-4559) or · Phone: 1-317-615-4559

Official record on ClinicalTrials.gov — NCT07165028

Locations in the U.S.

Conditions

• Steatotic Liver Disease

From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.