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SURMOUNT-J

CompletedPhase 3Results posted

A Study of Tirzepatide (LY3298176) in Participants With Obesity Disease

Efficacy and Safety of Once-Weekly Tirzepatide in Participants With Obesity Disease: A Randomized, Double-Blind, Placebo-Controlled Trial (SURMOUNT-J)

Asset

Tirzepatide

Subcutaneous · GLP-1 / GIP dual

Listed sites

18

Recruiting sites

Enrollment

267

actual

Study population

Obesity / overweight

Key I/E criterion

BMI ≥27

Primary endpoints

Body weight, % change≥5% weight-loss responders

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 IDNCT04844918
Org study ID17506
Secondary IDI8F-JE-GPHZEli Lilly and Company

Timeline

Milestones

Study first posted2021-04-14actual
Study start2021-05-10actual
Primary completion2023-06-24actual
Study completion2023-06-24actual
Last update posted2024-07-16actual
Results first posted2024-07-16actual

Assets

Investigational agents

Study populations

Who this study enrolls

Obesity / overweight

Eligibility

Who can enroll

Minimum age20 Years
SexAll
Healthy volunteersNot accepted

Inclusion criteria

Have a BMI of greater than or equal to ≥27 kg/m² and <less than 35 kg/m² with at least 2 obesity-related health problems or ≥35 kg/m² with at least 1 obesity-related health problems. Health problems are IGT, hyperlipidemia, or NAFLD.
Have a history of at least 1 self-reported unsuccessful dietary effort to lose body weight.

Exclusion criteria

Have diabetes.
Acute or chronic liver disease other than NAFLD.
Have a self-reported change in body weight >5 kg within 3 months prior to screening.
Have or plan to have endoscopic and/or device-based therapy for obesity or have had device removal within the last 6 months.
Have renal impairment measured as estimated glomerular filtration rate (eGFR) <30 mL/min/1.73 m2, calculated by Japanese Society of Nephrology coefficient-modified Chronic Kidney Disease-Epidemiology equation during screening.
Have a known clinically significant gastric emptying abnormality.
Have had a history of chronic or acute pancreatitis.
Have thyroid-stimulating hormone outside of the range of 0.4 to 6.0 micro units per milliliter (μIU/mL) at screening.
Have obesity induced by other endocrinologic disorders or diagnosed monogenetic or syndromic forms of obesity.
Have a history of significant active or unstable major depressive disorder or other severe psychiatric disorder within the last 2 years.
Have a cardiovascular condition within 3 months prior to randomization
Have a family or personal history of medullary thyroid carcinoma or Multiple Endocrine Neoplasia Syndrome type 2.

Endpoints (52)

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.

Coverage by outcome category

Weight & body composition
22
Glycemic / diabetes
10
Cardiometabolic biomarkers
8
Patient-reported / QoL
6
MASH / liver
4
Other clinical outcomes
2

Weight & body composition

22 endpoints
Primary/registry result

Mean Percent Change in Body Weight

Time frame:Baseline, 72 Weeks

Body weight, % change

percent change from baseline, improvement

Posted result

GroupValue (least_squares_mean), Percent change95% CI
10 mg Tirzepatide-17.8
15 mg Tirzepatide-22.7
Placebo-1.7
LS Mean Difference-16.195% CI-18.7-13.5p<0.001Mixed Models Analysis
LS Mean Difference-21.195% CI-23.6-18.5p<0.001Mixed Models Analysis
Primary/registry result

Percentage of Participants Who Achieve ≥5% Body Weight Reduction

Time frame:Week 72

≥5% weight-loss responders

threshold achievement, improvement

Posted result

GroupValue (number), Percentage of participants95% CI
10 mg Tirzepatide94.37
15 mg Tirzepatide96.05
Placebo20
Odds Ratio (OR)119.6595% CI29.06492.67p<0.001Mixed Models Analysis
Odds Ratio (OR)153.5795% CI36.03654.53p<0.001Mixed Models Analysis
Primary/protocol endpoint

Mean Percent Change in Body Weight

Time frame:Baseline, 72 Weeks

Body weight, % change

percent change from baseline, improvement

Primary/protocol endpoint

Percentage of Participants Who Achieve ≥5% Body Weight Reduction

Time frame:Week 72

≥5% weight-loss responders

threshold achievement, improvement

Secondary/registry result

Percentage of Participants Who Achieve ≥10% Body Weight Reduction

Time frame:Week 72

≥10% weight-loss responders

threshold achievement, improvement

Posted result

GroupValue (number), Percentage of participants95% CI
10 mg Tirzepatide85.92
15 mg Tirzepatide92.11
Placebo4
Odds Ratio (OR)185.9295% CI46.39745.16p<0.001Regression, Logistic
Odds Ratio (OR)318.0295% CI74.491357.79p<0.001Regression, Logistic
Secondary/registry result

Percentage of Participants Who Achieve ≥15% Body Weight Reduction

Time frame:Week 72

≥15% weight-loss responders

threshold achievement, improvement

Posted result

GroupValue (number), Percentage of participants95% CI
10 mg Tirzepatide63.38
15 mg Tirzepatide82.89
Placebo1.33
Odds Ratio (OR)100.2195% CI18.64538.74p<0.001Regression, Logistic
Odds Ratio (OR)286.7395% CI50.681622.06p<0.001Regression, Logistic
Secondary/registry result

Change From Baseline in Absolute Body Weight

Time frame:Baseline, Week 72

Body weight, absolute change (kg)

change from baseline, improvement

Posted result

GroupValue (least_squares_mean), kilograms (kg)95% CI
10 mg Tirzepatide-16.0
15 mg Tirzepatide-20.8
Placebo-1.5
LS Mean Difference-14.595% CI-16.8-12.2p<0.001Mixed Models Analysis
LS Mean Difference-19.395% CI-21.6-17.0p<0.001Mixed Models Analysis
Secondary/registry result

Change From Baseline in Body Mass Index (BMI)

Time frame:Baseline, Week 72

BMI, change

change from baseline, improvement

Posted result

GroupValue (least_squares_mean), kilograms per metres squared (kg/m^2)95% CI
10 mg Tirzepatide-5.8
15 mg Tirzepatide-7.7
Placebo-0.6
LS Mean Difference-5.295% CI-6.1-4.4p<0.001Mixed Models Analysis
LS Mean Difference-7.195% CI-8.0-6.3p<0.001Mixed Models Analysis
Secondary/registry result

Percent Change From Baseline in Visceral Adipose Tissue (VAT)

Time frame:Baseline, Week 72

Visceral fat, change

percent change from baseline, improvement

Posted result

GroupValue (least_squares_mean), Percent change95% CI
10 mg Tirzepatide-39.4
15 mg Tirzepatide-44.5
Placebo-3.4
LS Mean Difference-36.195% CI-42.9-29.3p<0.001Mixed Models Analysis
LS Mean Difference-41.195% CI-47.8-34.4p<0.001Mixed Models Analysis
Secondary/registry result

Percent Change From Baseline in Subcutaneous Adipose Tissue (SAT)

Time frame:Baseline, Week 72

Subcutaneous fat, change

percent change from baseline, improvement

Posted result

GroupValue (least_squares_mean), Percent change95% CI
10 mg Tirzepatide-32.2
15 mg Tirzepatide-36.5
Placebo-5.0
LS Mean Difference-27.295% CI-32.6-21.9p<0.001Mixed Models Analysis
LS Mean Difference-31.595% CI-36.7-26.2p<0.001Mixed Models Analysis
Secondary/registry result

Change From Baseline in VAT/SAT Ratio

Time frame:Baseline, Week 72

change from baseline, improvement

Posted result

GroupValue (least_squares_mean), ratio95% CI
10 mg Tirzepatide-0.09
15 mg Tirzepatide-0.08
Placebo0.01
LS Mean Difference-0.1095% CI-0.16-0.03p0.004Mixed Models Analysis
LS Mean Difference-0.0995% CI-0.15-0.03p0.006Mixed Models Analysis
Secondary/registry result

Percentage of Participants Who Achieved VAT <100 Square Centimeter (cm²) From Baseline for Participants With VAT≥100 cm² at Baseline

Time frame:Week 72

Visceral fat, change

threshold achievement, improvement

Posted result

GroupValue (number), Percentage of participants95% CI
10 mg Tirzepatide26.32
15 mg Tirzepatide37.10
Placebo1.64
Odds Ratio (OR)28.5295% CI4.31188.55p<0.001Regression, Logistic
Odds Ratio (OR)57.7395% CI8.68383.88p<0.001Regression, Logistic
Secondary/registry result

Change From Baseline in Waist Circumference

Time frame:Baseline, Week 72

Waist circumference, change

change from baseline, improvement

Posted result

GroupValue (least_squares_mean), centimeters (cm)95% CI
10 mg Tirzepatide-12.7
15 mg Tirzepatide-16.6
Placebo-1.3
LS Mean Difference-11.495% CI-13.8-9.0p<0.001Mixed Models Analysis
LS Mean Difference-15.395% CI-17.7-13.0p<0.001Mixed Models Analysis
Secondary/protocol endpoint

Percentage of Participants Who Achieve ≥10% Body Weight Reduction

Time frame:Week 72

≥10% weight-loss responders

threshold achievement, improvement

Secondary/protocol endpoint

Percentage of Participants Who Achieve ≥15% Body Weight Reduction

Time frame:Week 72

≥15% weight-loss responders

threshold achievement, improvement

Secondary/protocol endpoint

Change From Baseline in Absolute Body Weight

Time frame:Baseline, Week 72

Body weight, absolute change (kg)

change from baseline, improvement

Secondary/protocol endpoint

Change From Baseline in Body Mass Index (BMI)

Time frame:Baseline, Week 72

BMI, change

change from baseline, improvement

Secondary/protocol endpoint

Percent Change From Baseline in Visceral Adipose Tissue (VAT)

Time frame:Baseline, Week 72

Visceral fat, change

percent change from baseline, improvement

Secondary/protocol endpoint

Percent Change From Baseline in Subcutaneous Adipose Tissue (SAT)

Time frame:Baseline, Week 72

Subcutaneous fat, change

percent change from baseline, improvement

Secondary/protocol endpoint

Change From Baseline in VAT/SAT Ratio

Time frame:Baseline, Week 72

change from baseline, improvement

Secondary/protocol endpoint

Percentage of Participants Who Achieved VAT <100 Square Centimeter (cm²) From Baseline for Participants With VAT≥100 cm² at Baseline

Time frame:Week 72

Visceral fat, change

threshold achievement, improvement

Secondary/protocol endpoint

Change From Baseline in Waist Circumference

Time frame:Baseline, Week 72

Waist circumference, change

change from baseline, improvement

Glycemic / diabetes

10 endpoints
Secondary/registry result

Change From Baseline in Fasting Glucose for Participants With IGT at Baseline

Time frame:Baseline, Week 72

Fasting glucose, change

change from baseline, improvement

LOINC 1558-6

Posted result

GroupValue (least_squares_mean), milligrams per deciliter (mg/dL)95% CI
10 mg Tirzepatide-12.81
15 mg Tirzepatide-10.61
Placebo2.19
LS Mean Difference-15.0095% CI-18.91-11.09p<0.001Mixed Models Analysis
LS Mean Difference-12.8095% CI-16.56-9.05p<0.001Mixed Models Analysis
Secondary/registry result

Change From Baseline in Oral Glucose Tolerance (OGTT) 2-hr Glucose for Participants With Impaired Glucose Tolerance (IGT) at Baseline

Time frame:Baseline, Week 72

Postprandial glucose

change from baseline, improvement

Posted result

GroupValue (least_squares_mean), milligrams per deciliter (mg/dL)95% CI
10 mg Tirzepatide-61.50
15 mg Tirzepatide-70.56
Placebo-5.74
LS Mean Difference-55.7695% CI-69.74-41.77p<0.001Mixed Models Analysis
LS Mean Difference-64.8295% CI-78.20-51.43p<0.001Mixed Models Analysis
Secondary/registry result/low confidence

Percentage of Participants Who Achieved Improvements of IGT

Time frame:Week 72

threshold achievement, improvement

Posted result

GroupValue (number), Percentage of participants95% CI
10 mg Tirzepatide92.50
15 mg Tirzepatide97.83
Placebo28.0
Odds Ratio (OR)25.4295% CI7.2589.14p<0.001Regression, Logistic
Odds Ratio (OR)70.6695% CI12.73392.24p<0.001Regression, Logistic
Secondary/registry result

Change From Baseline in Hemoglobin A1c (HbA1c)

Time frame:Baseline, Week 72

HbA1c, change

change from baseline, improvement

LOINC 4548-4

Posted result

GroupValue (least_squares_mean), Percentage of HbA1c95% CI
10 mg Tirzepatide-0.67
15 mg Tirzepatide-0.68
Placebo-0.02
LS Mean Difference-0.6595% CI-0.77-0.53p<0.001Mixed Models Analysis
LS Mean Difference-0.6695% CI-0.77-0.55p<0.001Mixed Models Analysis
Secondary/registry result

Change From Baseline in Fasting Insulin for Participants With IGT at Baseline

Time frame:Baseline, Week 72

change from baseline, improvement

Posted result

GroupValue (least_squares_mean), milli-international units/liter (mIU/L)95% CI
10 mg Tirzepatide-6.04
15 mg Tirzepatide-6.69
Placebo-2.13
LS Mean Difference-3.9195% CI-5.74-2.08
LS Mean Difference-4.5595% CI-6.29-2.81
Secondary/protocol endpoint

Change From Baseline in Fasting Glucose for Participants With IGT at Baseline

Time frame:Baseline, Week 72

Fasting glucose, change

change from baseline, improvement

LOINC 1558-6

Secondary/protocol endpoint

Change From Baseline in Oral Glucose Tolerance (OGTT) 2-hr Glucose for Participants With Impaired Glucose Tolerance (IGT) at Baseline

Time frame:Baseline, Week 72

Postprandial glucose

change from baseline, improvement

Secondary/protocol endpoint/low confidence

Percentage of Participants Who Achieved Improvements of IGT

Time frame:Week 72

threshold achievement, improvement

Secondary/protocol endpoint

Change From Baseline in Hemoglobin A1c (HbA1c)

Time frame:Baseline, Week 72

HbA1c, change

change from baseline, improvement

LOINC 4548-4

Secondary/protocol endpoint/low confidence

Change From Baseline in Fasting Insulin for Participants With IGT at Baseline

Time frame:Baseline, Week 72

change from baseline, improvement

MASH / liver

4 endpoints
Secondary/registry result

Percent Change From Baseline in Hepatic Fat Fraction (HFF) for Participants With Non-alcoholic Fatty Liver Disease [NAFLD]

Time frame:Baseline, Week 72

Liver fat content, change

percent change from baseline, improvement

Posted result

GroupValue (least_squares_mean), Percent change95% CI
10 mg Tirzepatide-63.9
15 mg Tirzepatide-69.9
Placebo-19.6
LS Mean Difference-44.495% CI-53.0-35.7p<0.001ANCOVA
LS Mean Difference-50.495% CI-58.8-41.9p<0.001ANCOVA
Secondary/registry result/low confidence

Percentage of Participants Who Achieved Improvements of NAFLD

Time frame:Week 72

threshold achievement, improvement

Posted result

GroupValue (number), Percentage of participants95% CI
10 mg Tirzepatide69.49
15 mg Tirzepatide77.42
Placebo9.84
Odds Ratio (OR)27.5095% CI9.3580.88p<0.001Regression, Logistic
Odds Ratio (OR)40.0195% CI13.27120.57p<0.001Regression, Logistic
Secondary/protocol endpoint

Percent Change From Baseline in Hepatic Fat Fraction (HFF) for Participants With Non-alcoholic Fatty Liver Disease [NAFLD]

Time frame:Baseline, Week 72

MRI-PDFF, % change

percent change from baseline, improvement

Secondary/protocol endpoint/low confidence

Percentage of Participants Who Achieved Improvements of NAFLD

Time frame:Week 72

threshold achievement, improvement

Cardiometabolic biomarkers

8 endpoints
Secondary/registry result

Percent Change From Baseline in Fasting Lipids [Triglycerides (TG)] for Participants With Hyperlipidemia at Baseline

Time frame:Baseline, Week 72

Triglycerides, change

percent change from baseline, improvement

LOINC 2571-8

Posted result

GroupValue (least_squares_mean), Percent change95% CI
10 mg Tirzepatide-47.3
15 mg Tirzepatide-50.6
Placebo-11.0
LS Mean Difference-40.795% CI-50.0-29.7p<0.001Mixed Models Analysis
LS Mean Difference-44.595% CI-52.7-34.9p<0.001Mixed Models Analysis
Secondary/registry result

Percentage of Participants Who Achieved Improvements of Hyperlipidemia

Time frame:Week 72

categorical status, improvement

Posted result

GroupValue (number), Percentage of participants95% CI
10 mg Tirzepatide72.41
15 mg Tirzepatide81.08
Placebo25
Odds Ratio (OR)9.2995% CI2.8630.20p<0.001Regression, Logistic
Odds Ratio (OR)15.6795% CI4.7851.37p<0.001Regression, Logistic
Secondary/registry result

Change From Baseline in Systolic Blood Pressure

Time frame:Baseline, Week 72

Systolic BP, change

change from baseline, improvement

LOINC 8480-6

Posted result

GroupValue (least_squares_mean), millimeters of Mercury (mmHg)95% CI
10 mg Tirzepatide-11.2
15 mg Tirzepatide-12.0
Placebo1.9
LS Mean Difference-13.295% CI-17.0-9.3p<0.001Mixed Models Analysis
LS Mean Difference-13.995% CI-17.7-10.1p<0.001Mixed Models Analysis
Secondary/registry result

Change From Baseline in Diastolic Blood Pressure

Time frame:Baseline, Week 72

Diastolic BP, change

change from baseline, improvement

LOINC 8462-4

Posted result

GroupValue (least_squares_mean), millimeters of Mercury (mmHg)95% CI
10 mg Tirzepatide-5.9
15 mg Tirzepatide-6.3
Placebo0.5
LS Mean Difference-6.395% CI-9.3-3.4p<0.001Mixed Models Analysis
LS Mean Difference-6.895% CI-9.7-3.9p<0.001Mixed Models Analysis
Secondary/protocol endpoint

Percent Change From Baseline in Fasting Lipids [Triglycerides (TG)] for Participants With Hyperlipidemia at Baseline

Time frame:Baseline, Week 72

Triglycerides, change

percent change from baseline, improvement

LOINC 2571-8

Secondary/protocol endpoint/low confidence

Percentage of Participants Who Achieved Improvements of Hyperlipidemia

Time frame:Week 72

threshold achievement, improvement

Secondary/protocol endpoint

Change From Baseline in Systolic Blood Pressure

Time frame:Baseline, Week 72

Systolic BP, change

change from baseline, improvement

LOINC 8480-6

Secondary/protocol endpoint

Change From Baseline in Diastolic Blood Pressure

Time frame:Baseline, Week 72

Diastolic BP, change

change from baseline, improvement

LOINC 8462-4

Patient-reported / QoL

6 endpoints
Secondary/registry result

Change From Baseline in Short Form 36 Version 2 Health Survey (SF-36v2) Acute Form Physical Functioning Domain Score

Time frame:Baseline, Week 72

SF-36 physical

change from baseline, improvement

Posted result

GroupValue (least_squares_mean), Score on a scale95% CI
10 mg Tirzepatide1.1
15 mg Tirzepatide2.0
Placebo-0.1
LS Mean Difference1.395% CI0.22.3p0.022ANCOVA
LS Mean Difference2.195% CI1.13.2p<0.001ANCOVA
Secondary/registry result

Change From Baseline in Impact of Weight on Quality-of-Life Lite Clinical Trials Version (IWQOL-Lite-CT) Physical Function Composite Score

Time frame:Baseline, Week 72

IWQOL-Lite physical

change from baseline, improvement

Posted result

GroupValue (least_squares_mean), Score on a scale95% CI
10 mg Tirzepatide15.2
15 mg Tirzepatide13.0
Placebo2.2
LS Mean Difference13.095% CI7.418.7p<0.001ANCOVA
LS Mean Difference10.895% CI5.416.3p<0.001ANCOVA
Secondary/registry result

Change From Baseline in Euro Quality of Life Five Dimensions (EQ-5D-5L)

Time frame:Baseline, Week 72

EQ-5D index

change from baseline, improvement

Posted result

GroupValue (least_squares_mean), Score on a scale95% CI
10 mg Tirzepatide0.01
15 mg Tirzepatide0.01
Placebo-0.01
LS Mean Difference0.0395% CI0.000.06p0.099ANCOVA
LS Mean Difference0.0295% CI-0.010.05p0.236ANCOVA
Secondary/protocol endpoint

Change From Baseline in Short Form 36 Version 2 Health Survey (SF-36v2) Acute Form Physical Functioning Domain Score

Time frame:Baseline, Week 72

SF-36 physical

change from baseline, improvement

Secondary/protocol endpoint

Change From Baseline in Impact of Weight on Quality-of-Life Lite Clinical Trials Version (IWQOL-Lite-CT) Physical Function Composite Score

Time frame:Baseline, Week 72

IWQOL-Lite physical

change from baseline, improvement

Secondary/protocol endpoint

Change From Baseline in Euro Quality of Life Five Dimensions (EQ-5D-5L)

Time frame:Baseline, Week 72

EQ-5D index

change from baseline, improvement

Other clinical outcomes

2 endpoints
Secondary/registry result/low confidence

Percentage of Participants Who Had Improvement in Obesity-related Health Problems

Time frame:Week 72

threshold achievement, improvement

Posted result

GroupValue (number), Percentage of participants95% CI
10 mg Tirzepatide70.0
15 mg Tirzepatide79.69
Placebo11.11
Odds Ratio (OR)24.2695% CI8.6268.28p<0.001Regression, Logistic
Odds Ratio (OR)38.2795% CI13.21110.89p<0.001Regression, Logistic
Secondary/protocol endpoint/low confidence

Percentage of Participants Who Had Improvement in Obesity-related Health Problems

Time frame:Week 72

threshold achievement, improvement

Publications (3)

Bibliography

Records linked to this trial through ClinicalTrials.gov references, PubMed NCT search, and curated study seeds. 'Canonical' marks design/result papers; others are registry references or candidates.

Provenance

Sources

Trial identity, design, statusClinicalTrials.gov API v2
Snapshot dateJuly 1, 2026
Endpoint classificationDelfa endpoint taxonomy v2 (May 13, 2026)
Results tableClinicalTrials.gov results section

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.