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Active not recruitingPhase 2

A Study to Investigate Weight Management With Bimagrumab (LY3985863) and Tirzepatide (LY3298176), Alone or in Combination, in Adults With Obesity or Overweight

A Phase 2, Double-Blind, Randomized, Placebo-Controlled Study of Bimagrumab and Tirzepatide, Alone or in Combination, to Investigate the Efficacy and Safety in Adult Participants With Obesity or Overweight Without Type 2 Diabetes

Asset

Tirzepatide

Subcutaneous · GLP-1 / GIP dual

Listed sites

12

Recruiting sites

Enrollment

252

actual

Study population

Obesity / overweight

Key I/E criterion

Primary endpoint

Body weight, % change

Footprint

Where this trial recruits

Site locations as reported to ClinicalTrials.gov. Site count is not enrollment count; per-site enrollment is not available from source.

Identifiers

Registered as

NCT IDNCT06643728
Org study ID27265
Secondary IDJ4Z-MC-GIDFEli Lilly and Company

Timeline

Milestones

Study first posted2024-10-16actual
Study start2024-10-21actual
Primary completion2026-01-16actual
Last update posted2026-05-26actual
Study completion2027-01estimated (month precision)

Assets

Investigational agents

Study populations

Who this study enrolls

Obesity / overweight

Eligibility

Who can enroll

Minimum age18 Years
Maximum age75 Years
SexAll
Healthy volunteersNot accepted

Inclusion criteria

Have a BMI of
≥30 kilograms per square meter (kg/m2) or
≥27 kg/m2 and <30 kg/m2, with at least one of the following weight-related comorbidities:
Hypertension
Dyslipidemia
Cardiovascular disease
Obstructive sleep apnea
Have had a stable body weight for the 3 months prior to randomization (<5% body weight gain and/or loss)

Exclusion criteria

Have a prior or planned surgical treatment for obesity
Have at least one laboratory value suggestive of diabetes during screening
Use of metformin, or any other glucose-lowering medications
Have Type 1 Diabetes, latent autoimmune diabetes, been diagnosed with any form of diabetes mellitus except for a prior diagnosis of gestational diabetes mellitus, or history of ketoacidosis or hyperosmolar coma
Have poorly controlled hypertension
Have any of the following cardiovascular conditions within 3 months prior to screening:
acute myocardial infarction
cerebrovascular accident (stroke)
unstable angina, or
hospitalization due to congestive heart failure
Have ongoing or a history of frequent intermittent or chronic tachyarrhythmia syndromes
Have ongoing or a history of bradyarrhythmias other than sinus bradycardia
Have a history of New York Heart Association (NYHA) Functional Classification III or IV congestive heart failure
Have a history of symptomatic gallbladder disease within the past 2 years
Have signs and symptoms of any liver disease
Have a disease or condition known to cause gastrointestinal malabsorption or a known clinically significant gastric emptying abnormality
Have a history of acute or chronic pancreatitis
Have renal impairment, measured as estimated glomerular filtration rate <30 mL/minute/1.73 m2
Currently taking or have taken medications that may cause significant weight gain or promote weight loss within 3 months prior to screening

Endpoints (11)

What's being measured

Protocol endpoints and posted registry outcome measures, grouped into outcome categories. Composite endpoints show their component event types. Standard codes (LOINC, SNOMED CT) are shown where available.

Weight & body composition

11 endpoints
Primary/protocol endpoint

Percent Change from Baseline in Body Weight

Time frame:Baseline, Week 24

Body weight, % change

percent change from baseline, improvement

Secondary/protocol endpoint

Percent Change from Baseline in Total Body Fat Mass by Dual-Energy X-Ray Absorptiometry (DXA)

Time frame:Baseline, Week 24, Week 48

Total fat mass

percent change from baseline, improvement

Secondary/protocol endpoint

Change from Baseline in Body Weight

Time frame:Baseline, Week 24, Week 48

Body weight, absolute change (kg)

change from baseline, improvement

Secondary/protocol endpoint

Percentage of Participants Achieving ≥5% Body Weight Reduction

Time frame:Baseline, Week 24, Week 48

≥5% weight-loss responders

threshold achievement, improvement

Secondary/protocol endpoint

Percentage of Participants Achieving ≥10% Body Weight Reduction

Time frame:Baseline, Week 24, Week 48

≥10% weight-loss responders

threshold achievement, improvement

Secondary/protocol endpoint

Percentage of Participants Achieving ≥15% Body Weight Reduction

Time frame:Baseline, Week 24, Week 48

≥15% weight-loss responders

threshold achievement, improvement

Secondary/protocol endpoint

Change from Baseline in Waist Circumference

Time frame:Baseline, Week 24, Week 48

Waist circumference, change

change from baseline, improvement

Secondary/protocol endpoint

Change from Baseline in Body Mass Index (BMI)

Time frame:Baseline, Week 24, Week 48

BMI, change

change from baseline, improvement

Secondary/protocol endpoint

Change from Baseline in Waist-to-Height Ratio (WHtR)

Time frame:Baseline, Week 24, Week 48

change from baseline, improvement

Secondary/protocol endpoint

Percent Change from Baseline in Visceral Adipose Tissue (VAT)

Time frame:Baseline, Week 24, Week 48

Visceral fat, change

percent change from baseline, improvement

Secondary/protocol endpoint

Percent Change from Baseline in Total Body Lean Mass by DXA

Time frame:Baseline, Week 24, Week 48

Lean mass

percent change from baseline, improvement

Provenance

Sources

Trial identity, design, statusClinicalTrials.gov API v2
Snapshot dateJuly 1, 2026
Endpoint classificationDelfa endpoint taxonomy v2 (May 13, 2026)
Results tableno registry results posted yet

Trial facts come from public ClinicalTrials.gov records. Endpoint categories are Delfa's classification of those records, not a ClinicalTrials.gov field. All figures reflect the July 1, 2026 snapshot.