STEP 1: Research Study Investigating How Well Semaglutide Works in People Suffering From Overweight or Obesity (STEP 1)
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ClinicalTrials.gov Identifier: NCT03548935 |
Recruitment Status :
Completed
First Posted : June 7, 2018
Results First Posted : August 11, 2021
Last Update Posted : November 19, 2021
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Sponsor:
Novo Nordisk A/S
Information provided by (Responsible Party):
Novo Nordisk A/S
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Study Type | Interventional |
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Study Design | Allocation: Randomized; Intervention Model: Parallel Assignment; Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor); Primary Purpose: Treatment |
Conditions |
Metabolism and Nutrition Disorder Overweight or Obesity |
Interventions |
Drug: Semaglutide Drug: Placebo (semaglutide) |
Enrollment | 1961 |
Participant Flow
Recruitment Details | The trial was conducted at 129 sites in 16 countries as follows (all sites screened and randomized): Argentina (5 sites), Belgium (5 sites), Bulgaria (5 sites), Canada (7 sites), Denmark (1 site), Finland (2 sites), France (7 sites), Germany (13 sites), India (13 sites), Japan (5 sites), Mexico (3 sites), Poland (4 sites), Russian Federation (8 sites), Taiwan(1 site), UK (10 sites), US (40 sites). |
Pre-assignment Details | The trial included an initial 16-week dose-escalation period and a 52-week dose maintenance period. Participants were randomized in 2:1 ratio either to receive semaglutide 2.4 mg or placebo. The treatment is an adjunct to reduced-calorie diet and increased physical activity. |
Arm/Group Title | Semaglutide 2.4 mg | Placebo |
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Arm/Group Description | Participants were to receive once-weekly subcutaneous (s.c) injection of 0.25 mg Semaglutide administered using a PDS290 pre-filled pen-injector with a 3 mL cartridge containing Semaglutide 1.0 mg/mL or 3.0 mg/mL and followed a fixed-dose escalation regimen, with dose increases every 4 weeks (to doses of 0.5, 1.0, 1.7 and 2.4 mg/week), aiming at reaching the maintenance dose of 2.4 mg after 16 weeks. Treatment was continued on the maintenance dose of 2.4 mg Semaglutide once weekly for an additional 52 weeks until week 68. The treatment was an adjunct to a reduced-calorie diet and increased physical activity. | Participants were to receive once-weekly subcutaneous (s.c) injection of 0.25 mg Semaglutide placebo administered using a PDS290 pre-filled pen-injector with a 3 mL cartridge containing Semaglutide placebo 1.0 mg/mL or 3.0 mg/mL and followed a fixed-dose escalation regimen, with dose increases every 4 weeks (to doses of 0.5, 1.0, 1.7 and 2.4 mg/week), aiming at reaching the maintenance dose of 2.4 mg Semaglutide placebo after 16 weeks. Treatment was continued on the maintenance dose of 2.4 mg once weekly for an additional 52 weeks until week 68. The treatment was an adjunct to a reduced-calorie diet and increased physical activity. |
Period Title: Overall Study | ||
Started | 1306 | 655 |
Full Analysis Set (FAS) | 1306 | 655 |
Safety Analysis Set (SAS) | 1306 | 655 |
Completed | 1240 | 609 |
Not Completed | 66 | 46 |
Reason Not Completed | ||
Withdrawal by Subject | 26 | 17 |
Lost to Follow-up | 39 | 28 |
Death | 1 | 1 |
Baseline Characteristics
Arm/Group Title | Semaglutide 2.4 mg | Placebo | Total | |
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Arm/Group Description | Participants were to receive once-weekly subcutaneous (s.c) injection of 0.25 mg Semaglutide administered using a PDS290 pre-filled pen-injector with a 3 mL cartridge containing Semaglutide 1.0 mg/mL or 3.0 mg/mL and followed a fixed-dose escalation regimen, with dose increases every 4 weeks (to doses of 0.5, 1.0, 1.7 and 2.4 mg/week), aiming at reaching the maintenance dose of 2.4 mg after 16 weeks. Treatment was continued on the maintenance dose of 2.4 mg Semaglutide once weekly for an additional 52 weeks until week 68. The treatment was an adjunct to a reduced-calorie diet and increased physical activity. | Participants were to receive once-weekly subcutaneous (s.c) injection of 0.25 mg Semaglutide placebo administered using a PDS290 pre-filled pen-injector with a 3 mL cartridge containing Semaglutide placebo 1.0 mg/mL or 3.0 mg/mL and followed a fixed-dose escalation regimen, with dose increases every 4 weeks (to doses of 0.5, 1.0, 1.7 and 2.4 mg/week), aiming at reaching the maintenance dose of 2.4 mg Semaglutide placebo after 16 weeks. Treatment was continued on the maintenance dose of 2.4 mg once weekly for an additional 52 weeks until week 68. The treatment was an adjunct to a reduced-calorie diet and increased physical activity. | Total of all reporting groups | |
Overall Number of Baseline Participants | 1306 | 655 | 1961 | |
Baseline Analysis Population Description |
Full analysis set (FAS) included all randomized participants.
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Age, Continuous
Mean (Standard Deviation) Unit of measure: Years |
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Number Analyzed | 1306 participants | 655 participants | 1961 participants | |
46 (13) | 47 (12) | 46 (13) | ||
Sex: Female, Male
Measure Type: Count of Participants Unit of measure: Participants |
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Number Analyzed | 1306 participants | 655 participants | 1961 participants | |
Female |
955 73.1%
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498 76.0%
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1453 74.1%
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Male |
351 26.9%
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157 24.0%
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508 25.9%
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Ethnicity (NIH/OMB)
Measure Type: Count of Participants Unit of measure: Participants |
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Number Analyzed | 1306 participants | 655 participants | 1961 participants | |
Hispanic or Latino |
150 11.5%
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86 13.1%
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236 12.0%
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Not Hispanic or Latino |
1118 85.6%
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551 84.1%
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1669 85.1%
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Unknown or Not Reported |
38 2.9%
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18 2.7%
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56 2.9%
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Race (NIH/OMB)
Measure Type: Count of Participants Unit of measure: Participants |
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Number Analyzed | 1306 participants | 655 participants | 1961 participants | |
American Indian or Alaska Native |
17 1.3%
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10 1.5%
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27 1.4%
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Asian |
181 13.9%
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80 12.2%
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261 13.3%
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Native Hawaiian or Other Pacific Islander |
0 0.0%
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2 0.3%
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2 0.1%
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Black or African American |
72 5.5%
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39 6.0%
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111 5.7%
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White |
973 74.5%
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499 76.2%
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1472 75.1%
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More than one race |
25 1.9%
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8 1.2%
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33 1.7%
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Unknown or Not Reported |
38 2.9%
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17 2.6%
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55 2.8%
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Outcome Measures
Adverse Events
Limitations and Caveats
[Not Specified]
More Information
Principal Investigators are NOT employed by the organization sponsoring the study.
There IS an agreement between Principal Investigators and the Sponsor (or its agents) that restricts
the PI's rights to discuss or publish trial results after the trial is completed.
At the end of the trial, one or more scientific publications may be prepared collaboratively by the investigator(s) and Novo Nordisk. Novo Nordisk reserves the right to postpone publication and/or communication for up to 60 days to protect intellectual property
Results Point of Contact
Name/Title: | Clinical Reporting Anchor and Disclosure (1452) |
Organization: | Novo Nordisk A/S |
Phone: | (+1) 866-867-7178 |
EMail: | clinicaltrials@novonordisk.com |
Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: | Novo Nordisk A/S |
ClinicalTrials.gov Identifier: | NCT03548935 |
Other Study ID Numbers: |
NN9536-4373 U1111-1200-8053 ( Other Identifier: World Health Organization (WHO) ) 2017-003436-36 ( Registry Identifier: European Medicines Agency (EudraCT) ) |
First Submitted: | May 25, 2018 |
First Posted: | June 7, 2018 |
Results First Submitted: | June 16, 2021 |
Results First Posted: | August 11, 2021 |
Last Update Posted: | November 19, 2021 |