Phase 3 · Semaglutide

STEP 3 trial results

Effect and Safety of Semaglutide 2.4 mg Once-weekly as Adjunct to Intensive Behavioural Therapy in Subjects With Overweight or Obesity

Participants
611
Status
completed
Completed
2020-04-28
Sponsor
Novo Nordisk A/S

As posted on ClinicalTrials.gov (NCT03611582), updated at source Nov 11, 2021. Read again whenever the registry updates it. Registry figures can differ from a published paper, which may use another analysis.

Primary outcome

What STEP 3 measured first

Change in Body Weight (%)Percentage · Baseline (week 0) to week 68 · mean
MeasureSemaglutide 2.4 mgn=407Placebon=204
In-trial observation period-16.5(10.1)-5.8(7.7)
On-treatment observation period-17.6(9.6)-6.1(7.6)
Participants Who Achieve (Yes/no): Body Weight Reduction More Than or Equal to 5%Participants · After 68 weeks · count of participants
MeasureSemaglutide 2.4 mgn=407Placebon=204
In-trial observation period: Yes32390
In-trial observation period: No5099
On-treatment observation period: Yes30082
On-treatment observation period: No3482
Side effects by arm

Side effects in STEP 3

Percent of participants affected, week 0 to week 75 Results are based on the SAS which included all participants who received at least one dose of semaglutide or placebo.. The most common events the registry lists.

EventSemaglutide 2.4 mgPlacebo
Any serious event9.1%2.9%
Nausea58.2%22.1%
Constipation36.9%24.5%
Diarrhoea36.1%22.1%
Vomiting27.3%10.8%
Nasopharyngitis22.1%24%
Upper respiratory tract infection20.9%21.6%
Headache19.2%9.8%
Abdominal pain13%4.9%
Back pain13%10.8%
Dizziness12.8%5.4%
Fatigue12.8%7.4%
Sinusitis9.6%12.7%
Flatulence11.5%11.3%
Abdominal distension10.1%9.8%
Gastroenteritis viral10.1%6.4%
Urinary tract infection10.1%4.9%
Arthralgia9.6%9.3%
Dyspepsia8.8%4.9%
Eructation8.8%0.5%
Decreased appetite8.6%3.4%
Abdominal pain upper8.1%2.5%
Gastroenteritis6.9%5.9%
Influenza6.6%5.4%
Pain in extremity4.2%6.4%
Gastrooesophageal reflux disease6.1%2%
Secondary outcomes

What else it measured

Participants Who Achieve (Yes/no): Body Weight Reduction More Than or Equal to 10%Participants · After 68 weeks · count of participants
MeasureSemaglutide 2.4 mgn=373Placebon=189
Yes28151
No92138
Participants Who Achieve (Yes/no): Body Weight Reduction More Than or Equal to 15%Participants · After 68 weeks · count of participants
MeasureSemaglutide 2.4 mgn=373Placebon=189
Yes20825
No165164
Participants Who Achieve (Yes/no): Body Weight Reduction More Than or Equal to 20%Participants · After 68 weeks · count of participants
MeasureSemaglutide 2.4 mgn=373Placebon=189
Yes1337
No240182
Change in Waist CircumferenceCentimeter (cm) · Baseline (week 0) to week 68 · mean
Semaglutide 2.4 mgn=371Placebon=189
-15.2(10.2)-6.1(8.6)
Change in Systolic Blood PressureMillimeters of mercury (mmHg) · Baseline (week 0) to week 68 · mean
Semaglutide 2.4 mgn=372Placebon=188
-6(14)-2(15)
Change in Short Form-36 (SF-36) - Physical Functioning ScoreScore on a scale · Baseline (week 0) to week 68 · mean
MeasureSemaglutide 2.4 mgn=407Placebon=204
Change in physical functioning score (SF-36)2.5(5.7)1.7(5.7)
Change in SF-36: Role-Physical score1.6(6.5)1.5(6.7)
Change in SF-36: Bodily Pain score1.3(7.1)0.6(8.3)
Change in SF-36: General Health score3.4(6.6)1.9(6.4)
Change in SF-36: Vitality score2.0(8.2)0.9(7.8)
Change in SF-36: Social Functioning score0.1(6.6)-1.2(8.0)
Change in SF-36: Mental Health score-0.5(6.0)-1.5(7.1)
Change in SF-36: Physical component summary3.2(6.0)2.6(6.5)
Change in SF-36: Mental component summary-0.9(6.0)-2.2(8.0)
Change in SF-36: Role-Emotional score-0.6(5.6)-1.5(7.7)
Change in Body Weight (Kg)Kilogram (kg) · Baseline (week 0) to week 68 · mean
Semaglutide 2.4 mgn=373Placebon=189
-17.5(11.4)-6.2(8.6)
Change in Body Mass IndexKilogram per square meter (kg/sqm) · Baseline (week 0) to week 68 · mean
Semaglutide 2.4 mgn=373Placebon=189
-6.2(4.0)-2.2(3.1)
Change in HbA1c (%)Percentage point of HbA1c · Baseline (week 0) to week 68 · mean
Semaglutide 2.4 mgn=369Placebon=184
-0.5(0.3)-0.3(0.2)
Change in HbA1c (mmol/Mol)mmol/mol · Baseline (week 0) to week 68 · mean
Semaglutide 2.4 mgn=369Placebon=184
-5.8(3.1)-3.1(2.5)
Change in Fasting Plasma Glucosemilligrams per deciliter (mg/dL) · Baseline (week 0) to week 68 · mean
Semaglutide 2.4 mgn=355Placebon=176
-7.3(10.9)-1.1(10.6)
Change in Fasting Serum InsulinRatio of fasting serum insulin · Baseline (week 0) to week 68 · geometric mean
Semaglutide 2.4 mgn=346Placebon=170
0.68(67.4)0.84(50.6)
The trial

How STEP 3 was run

This study will look at the change in participant's body weight from the start to the end of the study. This is to compare the effect on body weight in people taking semaglutide (a new medicine) and people taking "dummy" medicine. Together with the medicine, the participant will also be part of an intensive lifestyle program where the participant will have talks with study staff about healthy food choices, what the participant can do to lose weight and be more physically active. The participant will either get semaglutide or "dummy" medicine - which treatment the participant gets is decided by chance. The participant will need to take 1 injection once a week. The study medicine is injected with a thin needle in a skin fold in the stomach, thigh or upper arm. For the first 2 months the participant will be on a low calorie diet. The diet is made up of bars, shakes and 1 low calorie pre-prepared meal for each day. The study will last for about 1.5 years. The participant will have 32 clinic visits with the study doctor.

  • Semaglutide: Participants will receive semaglutide 2.4 mg during 68-week treatment period in addition to intensive behavioural therapy.
  • Semaglutide placebo: Participants will receive semaglutide placebo during 68-week treatment period in addition to intensive behavioural therapy.
Who could join the trial

Inclusion Criteria: * Male or female, age more than or equal to 18 years at the time of signing informed consent * Body mass index more than or equal to 30 kg/m\^2 or more than or equal to 27 kg/m\^2 with the presence of at least one of the following weight-related comorbidities (treated or untreated): hypertension, dyslipidaemia, obstructive sleep apnoea or cardiovascular disease * History of at least one self-reported unsuccessful dietary effort to lose body weight Exclusion Criteria: * Hemoglobin A1c more than or equal to 48 mmol/mol (6.5%) as measured by the central laboratory at screening * A self-reported change in body weight more than 5 kg (11 lbs) within 90 days before screening irrespective of medical records

Published papers

Papers from STEP 3

Trial averages do not predict what one person will experience. Results are shown as the registry posts them, without interpretation.

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