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STEP12
CompletedPhase 3Results postedA Research Study to See How Well Semaglutide Helps People Who Have a Body Weight Above the Healthy Weight Range
Efficacy and Safety of Semaglutide 2.4 mg Once-weekly in Adults With Overweight and Obesity
Lead sponsor
Asset
Semaglutide
Subcutaneous · GLP-1 agonist
Listed sites
21
Recruiting sites
—
Enrollment
242
actual
Study population
Obesity / overweight
Key I/E criteria
•BMI ≥24•HbA1c ≤10%
Primary endpoints
•Body Weight (%)•Body Weight Reduction Greater Than or Equal to (≥) 5% (Yes/No)•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
Timeline
Milestones
Assets
Investigational agents
Study populations
Who this study enrolls
Eligibility
Who can enroll
Inclusion criteria
For participants with T2D at screening:
- Diagnosed with T2D greater than or equal to 180 days prior to the day of screening
Treated with either:
Exclusion criteria
For participants without T2D at screening:
- HbA1c greater than or equal to 6.5percent (48 mmol/mol) as measured by the laboratory.
For participants with T2D at screening:
Endpoints (48)
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
14 endpointsChange in Body Weight (%)
Time frame:Baseline (week 0), end of treatment (week 44)
change from baseline, improvement
Posted result
| Group | Value (mean), Percentage change in body weight | 95% CI |
|---|---|---|
| Semaglutide 2.4 mg | -12.2 | — |
| Placebo | -2.2 | — |
Treatment policy estimand
Number of Participants Who Achieved Body Weight Reduction Greater Than or Equal to (≥) 5% (Yes/No)
Time frame:At end of treatment (week 44)
threshold achievement, improvement
Posted result
| Group | Value (count_of_participants), Participants | 95% CI |
|---|---|---|
| Semaglutide 2.4 mg | 128 | — |
| 31 | — | |
| Placebo | 19 | — |
| 59 | — |
Treatment policy Estimand
Change in Body Weight (%)
Time frame:Baseline (week 0), end of treatment (week 44)
Body weight, % change
percent change from baseline, improvement
Number of Participants Who Achieved Body Weight Reduction Greater Than or Equal to (≥) 5% (Yes/No)
Time frame:At end of treatment (week 44)
≥5% weight-loss responders
threshold achievement, improvement
Number of Participants Who Achieved Body Weight Reduction ≥ 10% (Yes/No)
Time frame:At end of treatment (week 44)
threshold achievement, improvement
Posted result
| Group | Value (count_of_participants), Participants | 95% CI |
|---|---|---|
| Semaglutide 2.4 mg | 96 | — |
| 63 | — | |
| Placebo | 9 | — |
| 69 | — |
Change in Waist Circumference
Time frame:Baseline (week 0), end of treatment (week 44)
change from baseline, improvement
Posted result
| Group | Value (mean), Centimeter (cm) | 95% CI |
|---|---|---|
| Semaglutide 2.4 mg | -9.1 | — |
| Placebo | -2.4 | — |
Change in Body Weight (kg)
Time frame:Baseline (week 0), end of treatment (week 44)
change from baseline, improvement
Posted result
| Group | Value (mean), Kg | 95% CI |
|---|---|---|
| Semaglutide 2.4 mg | -9.3 | — |
| Placebo | -1.7 | — |
Change in Body Mass Index
Time frame:Baseline (week 0), end of treatment (week 44)
change from baseline, improvement
Posted result
| Group | Value (mean), Kilogram per square meter (kg/m^2) | 95% CI |
|---|---|---|
| Semaglutide 2.4 mg | -3.4 | — |
| Placebo | -0.6 | — |
Change in Waist-height Ratio (WtHR)
Time frame:Baseline (week 0), end of treatment (week 44)
change from baseline, improvement
Posted result
| Group | Value (mean), Ratio of waist-height | 95% CI |
|---|---|---|
| Semaglutide 2.4 mg | -0.05 | — |
| Placebo | -0.01 | — |
Number of Participants Who Achieved Body Weight Reduction ≥ 10% (Yes/No)
Time frame:At end of treatment (week 44)
≥10% weight-loss responders
threshold achievement, improvement
Change in Waist Circumference
Time frame:Baseline (week 0), end of treatment (week 44)
Waist circumference, change
change from baseline, improvement
Change in Body Weight (kg)
Time frame:Baseline (week 0), end of treatment (week 44)
Body weight, absolute change (kg)
change from baseline, improvement
Change in Body Mass Index
Time frame:Baseline (week 0), end of treatment (week 44)
BMI, change
change from baseline, improvement
Change in Waist-height Ratio (WtHR)
Time frame:Baseline (week 0), end of treatment (week 44)
change from baseline, improvement
Glycemic / diabetes
9 endpointsChange in HbA1c (%)
Time frame:Baseline (week 0), end of treatment (week 44)
change from baseline, improvement
Posted result
| Group | Value (mean), Percentage of HbA1c | 95% CI |
|---|---|---|
| Semaglutide 2.4 mg | -0.4 | — |
| Placebo | 0.0 | — |
Change in HbA1c (mmol/Mol)
Time frame:Baseline (week 0), end of treatment (week 44)
change from baseline, improvement
Posted result
| Group | Value (mean), mmol/mol | 95% CI |
|---|---|---|
| Semaglutide 2.4 mg | -4.2 | — |
| Placebo | 0.5 | — |
Change in Fasting Plasma Glucose (mg/dL)
Time frame:Baseline (week 0), end of treatment (week 44)
change from baseline, improvement
Posted result
| Group | Value (mean), mg/dL | 95% CI |
|---|---|---|
| Semaglutide 2.4 mg | -12.3 | — |
| Placebo | 0.5 | — |
Change in Fasting Plasma Glucose (mmol/L)
Time frame:Baseline (week 0), end of treatment (week 44)
change from baseline, improvement
Posted result
| Group | Value (mean), mmol/L | 95% CI |
|---|---|---|
| Semaglutide 2.4 mg | -0.7 | — |
| Placebo | 0.0 | — |
Number of Clinically Significant Hypoglycaemic Episodes (Level 2) Less Than (<) 3.0 mmol/L Confirmed by Blood Glucose (BG) Meter - Participants With Type 2 Diabetes (T2D)
Time frame:From baseline (week 0) to end of study (week 49)
event count, event
Posted result
| Group | Value (number), Episodes | 95% CI |
|---|---|---|
| Semaglutide 2.4 mg | 1 | — |
| Placebo | 0 | — |
Change in HbA1c (%)
Time frame:Baseline (week 0), end of treatment (week 44)
HbA1c, change
change from baseline, improvement
LOINC 4548-4
Change in HbA1c (mmol/Mol)
Time frame:Baseline (week 0), end of treatment (week 44)
HbA1c, change
change from baseline, improvement
LOINC 4548-4
Change in Fasting Plasma Glucose (mg/dL)
Time frame:Baseline (week 0), end of treatment (week 44)
Fasting glucose, change
change from baseline, improvement
LOINC 1558-6
Change in Fasting Plasma Glucose (mmol/L)
Time frame:Baseline (week 0), end of treatment (week 44)
Fasting glucose, change
change from baseline, improvement
LOINC 1558-6
Cardiometabolic biomarkers
20 endpointsChange in Systolic Blood Pressure
Time frame:Baseline (week 0), end of treatment (week 44)
change from baseline, improvement
Posted result
| Group | Value (mean), Millimeter of mercury (mmHg) | 95% CI |
|---|---|---|
| Semaglutide 2.4 mg | -7 | — |
| Placebo | -4 | — |
Change in Diastolic Blood Pressure
Time frame:Baseline (week 0), end of treatment (week 44)
change from baseline, improvement
Posted result
| Group | Value (mean), mmHg | 95% CI |
|---|---|---|
| Semaglutide 2.4 mg | -4 | — |
| Placebo | -2 | — |
Change in Total Cholesterol (mmol/L) - Ratio to Baseline
Time frame:Baseline (week 0), end of treatment (week 44)
change from baseline, improvement
Posted result
| Group | Value (geometric_mean), Ratio of total cholesterol | 95% CI |
|---|---|---|
| Semaglutide 2.4 mg | 0.94 | — |
| Placebo | 1.01 | — |
Change in High Density Lipoprotein (HDL) Cholesterol (mmol/L) - Ratio to Baseline
Time frame:Baseline (week 0), end of treatment (week 44)
change from baseline, improvement
Posted result
| Group | Value (geometric_mean), Ratio of HDL | 95% CI |
|---|---|---|
| Semaglutide 2.4 mg | 1.04 | — |
| Placebo | 1.06 | — |
Change in Low Density Lipoprotein (LDL) Cholesterol (mmol/L) - Ratio to Baseline
Time frame:Baseline (week 0), end of treatment (week 44)
change from baseline, improvement
Posted result
| Group | Value (geometric_mean), Ratio of LDL | 95% CI |
|---|---|---|
| Semaglutide 2.4 mg | 0.97 | — |
| Placebo | 1.02 | — |
Change in Very Low-Density Lipoproteins (VLDL) Cholesterol (mmol/L) - Ratio to Baseline
Time frame:Baseline (week 0), end of treatment (week 44)
change from baseline, improvement
Posted result
| Group | Value (geometric_mean), Ratio of VLDL | 95% CI |
|---|---|---|
| Semaglutide 2.4 mg | 0.72 | — |
| Placebo | 0.93 | — |
Change in Triglycerides (mmol/L) - Ratio to Baseline
Time frame:Baseline (week 0), end of treatment (week 44)
change from baseline, improvement
Posted result
| Group | Value (geometric_mean), Ratio of triglycerides | 95% CI |
|---|---|---|
| Semaglutide 2.4 mg | 0.71 | — |
| Placebo | 0.91 | — |
Change in Free Fatty Acids (mmol/L) - Ratio to Baseline
Time frame:Baseline (week 0), end of treatment (week 44)
change from baseline, improvement
Posted result
| Group | Value (geometric_mean), Ratio of free fatty acids | 95% CI |
|---|---|---|
| Semaglutide 2.4 mg | 0.88 | — |
| Placebo | 0.99 | — |
Change in High Sensitivity C-Reactive Protein (hsCRP) - Ratio to Baseline
Time frame:Baseline (week 0), end of treatment (week 44)
change from baseline, improvement
Posted result
| Group | Value (geometric_mean), Ratio of hsCRP | 95% CI |
|---|---|---|
| Semaglutide 2.4 mg | 0.69 | — |
| Placebo | 0.68 | — |
Change in Pulse
Time frame:Baseline (week 0), end of treatment (week 44)
change from baseline, improvement
Posted result
| Group | Value (mean), Beats per minute (Beats/min) | 95% CI |
|---|---|---|
| Semaglutide 2.4 mg | 3 | — |
| Placebo | 1 | — |
Change in Systolic Blood Pressure
Time frame:Baseline (week 0), end of treatment (week 44)
Systolic BP, change
change from baseline, improvement
LOINC 8480-6
Change in Diastolic Blood Pressure
Time frame:Baseline (week 0), end of treatment (week 44)
Diastolic BP, change
change from baseline, improvement
LOINC 8462-4
Change in Total Cholesterol (mmol/L) - Ratio to Baseline
Time frame:Baseline (week 0), end of treatment (week 44)
Total cholesterol, change
ratio, improvement
LOINC 2093-3
Change in High Density Lipoprotein (HDL) Cholesterol (mmol/L) - Ratio to Baseline
Time frame:Baseline (week 0), end of treatment (week 44)
HDL-C, change
ratio, improvement
LOINC 2085-9
Change in Low Density Lipoprotein (LDL) Cholesterol (mmol/L) - Ratio to Baseline
Time frame:Baseline (week 0), end of treatment (week 44)
LDL-C, change
ratio, improvement
LOINC 13457-7
Change in Very Low-Density Lipoproteins (VLDL) Cholesterol (mmol/L) - Ratio to Baseline
Time frame:Baseline (week 0), end of treatment (week 44)
VLDL, change
ratio, improvement
Change in Triglycerides (mmol/L) - Ratio to Baseline
Time frame:Baseline (week 0), end of treatment (week 44)
Triglycerides, change
ratio, improvement
LOINC 2571-8
Change in Free Fatty Acids (mmol/L) - Ratio to Baseline
Time frame:Baseline (week 0), end of treatment (week 44)
Free fatty acids, change
ratio, improvement
Change in High Sensitivity C-Reactive Protein (hsCRP) - Ratio to Baseline
Time frame:Baseline (week 0), end of treatment (week 44)
hs-CRP, change
ratio, improvement
LOINC 30522-7
Change in Pulse
Time frame:Baseline (week 0), end of treatment (week 44)
Heart rate, change
change from baseline, improvement
Safety / tolerability / PK
5 endpointsNumber of Treatment Emergent Adverse Events (TEAEs)
Time frame:From baseline (week 0) to end of study (week 49)
event count, event
Posted result
| Group | Value (number), Events | 95% CI |
|---|---|---|
| Semaglutide 2.4 mg | 614 | — |
| Placebo | 183 | — |
Number of Serious Adverse Events (SAEs)
Time frame:From baseline (week 0) to end of study (week 49)
event count, event
Posted result
| Group | Value (number), Events | 95% CI |
|---|---|---|
| Semaglutide 2.4 mg | 14 | — |
| Placebo | 3 | — |
Number of Treatment Emergent Adverse Events (TEAEs)
Time frame:From baseline (week 0) to end of study (week 49)
Treatment-emergent AEs (any)
event count, event
Number of Serious Adverse Events (SAEs)
Time frame:From baseline (week 0) to end of study (week 49)
Serious AEs (any)
event count, event
Number of Clinically Significant Hypoglycaemic Episodes (Level 2) Less Than (<) 3.0 mmol/L Confirmed by Blood Glucose (BG) Meter - Participants With Type 2 Diabetes (T2D)
Time frame:From baseline (week 0) to end of study (week 49)
Documented hypoglycemia
event count, event
Provenance
Sources
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.