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A Research Study to Compare Two Doses of Semaglutide Taken Once Weekly in People With Type 2 Diabetes

Efficacy and Safety of Semaglutide 2.0 mg s.c. Once-weekly Compared to Semaglutide 1.0 mg s.c. Once-weekly in Subjects With Type 2 Diabetes

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03989232
Acronym
SUSTAIN FORTE
Enrollment
961
Registered
2019-06-18
Start date
2019-06-19
Completion date
2020-11-09
Last updated
2023-02-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Diabetes Mellitus, Type 2

Brief summary

This study compares the effect of two doses of semaglutide (1.0 mg and 2.0 mg) in people with type 2 diabetes (T2D). People taking part in the study will take the medicine together with their current diabetes medicine (sulphonylurea and/or metformin). Participants will get a dose of either 1.0 mg or 2.0 mg semaglutide once a week - which dose is decided by chance. Participants will inject semaglutide under the skin once a week. The study will last for about 49 weeks. Participants will have 9 clinic visits and 2 phone calls with the study doctor. At the visits participants will have blood taken and eye tests done. Women cannot take part if pregnant, breast-feeding or planning to become pregnant during the study period. Female participants who can get pregnant will be checked 11 times for pregnancy via urine tests.

Interventions

DRUGSemaglutide

Semaglutide injected subcutaneously (s.c., under the skin) once-weekly. Participants will keep taking their pre-study diabetes tablets throughout the study.

DRUGPlacebo (semaglutide)

Semaglutide placebo injected once-weekly from week 13 to week 40.

Sponsors

Novo Nordisk A/S
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Masking description

Sponsor staff involved in the clinical trial is masked according to company standard procedures

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Male or female, age equal to or above18 years at the time of signing informed consent * Diagnosed with T2D at least 180 days prior to the day of screening * HbA1c of 8-10% (64-86 mmol/mol) (both inclusive) * Stable daily dose(s) for 90 days prior to the day of screening of: * Any metformin formulations (equal to or above1500 mg or maximum tolerated or effective dose) alone or in combination with sulfonylureas (SU) (equal to or above half of the maximum approved dose according to local label or maximum tolerated or effective dose)

Exclusion criteria

* Treatment with any medication for the indication of diabetes or obesity other than stated in the inclusion criteria within the past 90 days prior to the day of screening. However, short term insulin treatment for a maximum of 14 days prior to the day of screening is allowed, as is prior insulin treatment for gestational diabetes * Renal impairment measured as estimated glomerular filtration rate (eGFR) value of \<30 mL/min/1.73 m\^2 according to the Chronic Kidney Disease Epidemiology Collaboration (CKDEPI) creatinine equation as defined by KDIGO 2012 classification * Uncontrolled and potentially unstable diabetic retinopathy or maculopathy. Verified by a fundus examination performed within the past 90 days prior to screening or in the period between screening and randomisation. Pharmacological pupil-dilation is a requirement unless using a digital fundus photography camera specified for non-dilated examination

Design outcomes

Primary

MeasureTime frameDescription
Change in HbA1cWeek 0, week 40Change from baseline (week 0) to week 40 in glycosylated haemoglobin (HbA1c) was evaluated. Results are based on the 'on-treatment without rescue medication' observation period, which started at the date of first dose of trial product to either first initiation of rescue medication or the day of last dose of trial product, whichever came first; and 'In-trial' observation period which started at the date of randomisation and ended at the first of the following dates, both inclusive: end-of-treatment visit (week 40), death, participant withdrew informed consent, last contact for participant lost to follow-up.

Secondary

MeasureTime frameDescription
Change in Fasting Plasma Glucose (FPG)Week 0, week 40Change from baseline (week 0) to week 40 in FPG was evaluated. Results are based on the 'on-treatment without rescue medication' observation period, which started at the date of first dose of trial product to either first initiation of rescue medication or the day of last dose of trial product, whichever came first.
Change in Body Mass Index (BMI)Week 0, week 40Change from baseline (week 0) to week 40 in BMI was evaluated. Results are based on the 'on-treatment without rescue medication' observation period, which started at the date of first dose of trial product to either first initiation of rescue medication or the day of last dose of trial product, whichever came first.
Change in Waist CircumferenceWeek 0, week 40Change from baseline (week 0) to week 40 in waist circumference was evaluated. Results are based on the 'on-treatment without rescue medication' observation period, which started at the date of first dose of trial product to either first initiation of rescue medication or the day of last dose of trial product, whichever came first.
Participants Who Achieved HbA1c < 7.0%Week 40Percentage of participants who achieved HbA1c \< 7.0% is presented. Results are based on the 'on-treatment without rescue medication' observation period, which started at the date of first dose of trial product to either first initiation of rescue medication or the day of last dose of trial product, whichever came first. Missing HbA1c assessment at week 40 was imputed using observed data from participants within same treatment group.
Change in Body WeightWeek 0, week 40Change from baseline (week 0) to week 40 in body weight was evaluated. Results are based on the 'on-treatment without rescue medication' observation period, which started at the date of first dose of trial product to either first initiation of rescue medication or the day of last dose of trial product, whichever came first; and 'In-trial' observation period which started at the date of randomisation and ended at the first of the following dates, both inclusive: end-of-treatment visit (week 40), death, participant withdrew informed consent, last contact for participant lost to follow-up.
Participants Who Achieved Weight Loss ≥5%Week 40Percentage of participants who achieved weight loss ≥5% is presented. Results are based on the 'on-treatment without rescue medication' observation period, which started at the date of first dose of trial product to either first initiation of rescue medication or the day of last dose of trial product, whichever came first. Missing body weight assessment at week 40 was imputed using observed data from participants within same treatment group.
Participants Who Achieved Weight Loss ≥10%Week 40Percentage of participants who achieved weight loss ≥10% is presented. Results are based on the 'on-treatment without rescue medication' observation period, which started at the date of first dose of trial product to either first initiation of rescue medication or the day of last dose of trial product, whichever came first. Missing body weight assessment at week 40 was imputed using observed data from participants within same treatment group.
Number of Treatment-emergent Severe or Blood Glucose (BG) Confirmed Symptomatic Hypoglycaemic EpisodesWeek 0 to week 47Hypoglycaemic episodes defined as treatment-emergent if the onset of the episode occurs within the on-treatment observation period. Severe or BG-confirmed symptomatic hypoglycaemia is an episode that required assistance from another person for recovery and blood glucose-confirmed by a plasma glucose value \<3.1 mmol/L (56 milligrams per deciliter (mg/dL)) with symptoms consistent with hypoglycaemia. Results are based on the 'on-treatment' observation period, which started at the date of first dose of trial product and ended at the first date of any of the following: the follow-up visit (week 47), the treatment discontinuation follow-up visit (end of treatment + 7 weeks), the date of last dose of trial product +49 days or the end-date for the 'in-trial' observation period.
Change in Pulse RateWeek 0, week 40Change from baseline (week 0) to week 40 in pulse rate is presented. Results are based on the 'on-treatment' observation period, which started at the date of first dose of trial product and ended at the endpoint-specific end-date.
Participants Who Achieved HbA1c ≤ 6.5%Week 40Percentage of participants who achieved HbA1c ≤ 6.5% is presented. Results are based on the 'on-treatment without rescue medication' observation period, which started at the date of first dose of trial product to either first initiation of rescue medication or the day of last dose of trial product, whichever came first. Missing HbA1c assessment at week 40 was imputed using observed data from participants within same treatment group.

Countries

Bulgaria, Canada, Czechia, Greece, Hungary, Japan, Poland, Puerto Rico, Slovakia, Ukraine, United States

Participant flow

Recruitment details

The trial was conducted at 125 sites in Bulgaria (9), Canada (8), Czech Republic (4), Greece (6), Hungary (12), Japan (2), Poland (10), Slovakia (11), Ukraine (5) and the United States (58). In addition to these sites, 4 sites in the US screened but did not randomize participants, and 3 sites were approved by the IRB/IEC but did not screen or assign any participants to treatment.

Pre-assignment details

Participants with type 2 diabetes (T2D) treated with stable doses of metformin only, or metformin in combination with sulfonylurea (SU), in need of the treatment intensification were randomized 1:1 to once-weekly treatment with semaglutide 2.0 milligrams (mg) or once-weekly treatment with semaglutide 1.0 mg.

Participants by arm

ArmCount
Semaglutide 1.0 mg
Participants received subcutaneous (s.c.) injection of semaglutide once-weekly for 40 weeks in a fixed-dose escalation regimen, with dose doubling every 4 weeks until the target dose of 1.0 mg was reached: 0.25 mg during 0-4 weeks followed by 0.5 mg during 4-8 weeks followed by 1.0 mg during 8-12 weeks and then 1.0 mg semaglutide along with s.c. injection of placebo matched to semaglutide 1.0 mg during 12-40 weeks.
481
Semaglutide 2.0 mg
Participants received s.c. injection of semaglutide once-weekly for 40 weeks in a fixed-dose escalation regimen, with dose doubling every 4 weeks until the target maintenance dose of 2.0 mg was reached: 0.25 mg during 0-4 weeks followed by 0.5 mg during 4-8 weeks followed by 1.0 mg during 8-12 weeks and then 2.0 mg during 12-40 weeks.
480
Total961

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyDeath12
Overall StudyLost to Follow-up310
Overall StudyWithdrawal by Subject66

Baseline characteristics

CharacteristicSemaglutide 2.0 mgTotalSemaglutide 1.0 mg
Age, Continuous57.9 Years
STANDARD_DEVIATION 10
58.0 Years
STANDARD_DEVIATION 10
58.2 Years
STANDARD_DEVIATION 9.9
Ethnicity (NIH/OMB)
Hispanic or Latino
52 Participants111 Participants59 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
428 Participants850 Participants422 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race/Ethnicity, Customized
American Indian or Alaska native
0 Participants1 Participants1 Participants
Race/Ethnicity, Customized
Asian
33 Participants69 Participants36 Participants
Race/Ethnicity, Customized
Black or African American
26 Participants43 Participants17 Participants
Race/Ethnicity, Customized
Native Hawaiian or Other Pacific
0 Participants0 Participants0 Participants
Race/Ethnicity, Customized
Other
1 Participants1 Participants0 Participants
Race/Ethnicity, Customized
White
420 Participants847 Participants427 Participants
Sex: Female, Male
Female
201 Participants398 Participants197 Participants
Sex: Female, Male
Male
279 Participants563 Participants284 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
1 / 4802 / 479
other
Total, other adverse events
126 / 480132 / 479
serious
Total, serious adverse events
25 / 48021 / 479

Outcome results

Primary

Change in HbA1c

Change from baseline (week 0) to week 40 in glycosylated haemoglobin (HbA1c) was evaluated. Results are based on the 'on-treatment without rescue medication' observation period, which started at the date of first dose of trial product to either first initiation of rescue medication or the day of last dose of trial product, whichever came first; and 'In-trial' observation period which started at the date of randomisation and ended at the first of the following dates, both inclusive: end-of-treatment visit (week 40), death, participant withdrew informed consent, last contact for participant lost to follow-up.

Time frame: Week 0, week 40

Population: The FAS included all randomized participants. Number analyzed=number of participants contributed to the analysis.

ArmMeasureGroupValue (MEAN)Dispersion
Semaglutide 1.0 mgChange in HbA1cOn-treatment without rescue medication-2.0 Percentage changeStandard Deviation 1
Semaglutide 1.0 mgChange in HbA1cIn-trial-1.9 Percentage changeStandard Deviation 1
Semaglutide 2.0 mgChange in HbA1cOn-treatment without rescue medication-2.2 Percentage changeStandard Deviation 1
Semaglutide 2.0 mgChange in HbA1cIn-trial-2.2 Percentage changeStandard Deviation 1.1
Comparison: On-treatment without rescue medication observation period: Imputation of missing data was handled by multiple imputation (MI) assuming that missing data were missed at random (MAR). The imputation was performed separately within each treatment group defined by randomised treatment.p-value: 0.000395% CI: [-0.36, -0.11]ANCOVA
Comparison: In-trial observation period: Imputation of missing data was handled by MI assuming that missing data were missed at random. The imputation was performed by imputing missing week 40 data separately within groups defined by randomised treatment and treatment status at week 40.p-value: 0.009895% CI: [-0.31, -0.04]ANCOVA
Secondary

Change in Body Mass Index (BMI)

Change from baseline (week 0) to week 40 in BMI was evaluated. Results are based on the 'on-treatment without rescue medication' observation period, which started at the date of first dose of trial product to either first initiation of rescue medication or the day of last dose of trial product, whichever came first.

Time frame: Week 0, week 40

Population: The FAS included all randomized participants. Overall number of participants analyzed=number of participants contributed to the analysis.

ArmMeasureValue (MEAN)Dispersion
Semaglutide 1.0 mgChange in Body Mass Index (BMI)-2.1 Kilogram per squaremeter (Kg/m^2)Standard Deviation 2.1
Semaglutide 2.0 mgChange in Body Mass Index (BMI)-2.5 Kilogram per squaremeter (Kg/m^2)Standard Deviation 2.1
Secondary

Change in Body Weight

Change from baseline (week 0) to week 40 in body weight was evaluated. Results are based on the 'on-treatment without rescue medication' observation period, which started at the date of first dose of trial product to either first initiation of rescue medication or the day of last dose of trial product, whichever came first; and 'In-trial' observation period which started at the date of randomisation and ended at the first of the following dates, both inclusive: end-of-treatment visit (week 40), death, participant withdrew informed consent, last contact for participant lost to follow-up.

Time frame: Week 0, week 40

Population: The FAS included all randomized participants. Number analyzed=number of participants contributed to the analysis.

ArmMeasureGroupValue (MEAN)Dispersion
Semaglutide 1.0 mgChange in Body WeightOn-treatment without rescue medication-6.0 Kilogram (kg)Standard Deviation 5.8
Semaglutide 1.0 mgChange in Body WeightIn-trial-5.7 Kilogram (kg)Standard Deviation 5.9
Semaglutide 2.0 mgChange in Body WeightOn-treatment without rescue medication-7.0 Kilogram (kg)Standard Deviation 5.8
Semaglutide 2.0 mgChange in Body WeightIn-trial-6.7 Kilogram (kg)Standard Deviation 5.9
Secondary

Change in Fasting Plasma Glucose (FPG)

Change from baseline (week 0) to week 40 in FPG was evaluated. Results are based on the 'on-treatment without rescue medication' observation period, which started at the date of first dose of trial product to either first initiation of rescue medication or the day of last dose of trial product, whichever came first.

Time frame: Week 0, week 40

Population: The FAS included all randomized participants. Overall number of participants analyzed=number of participants contributed to the analysis.

ArmMeasureValue (MEAN)Dispersion
Semaglutide 1.0 mgChange in Fasting Plasma Glucose (FPG)-3.2 Millimoles per liter (mmol/L)Standard Deviation 2.8
Semaglutide 2.0 mgChange in Fasting Plasma Glucose (FPG)-3.4 Millimoles per liter (mmol/L)Standard Deviation 3.1
Secondary

Change in Pulse Rate

Change from baseline (week 0) to week 40 in pulse rate is presented. Results are based on the 'on-treatment' observation period, which started at the date of first dose of trial product and ended at the endpoint-specific end-date.

Time frame: Week 0, week 40

Population: The SAS included all participants exposed to at least one dose of trial product. Overall number of participants analyzed=number of participants contributed to the analysis.

ArmMeasureValue (MEAN)Dispersion
Semaglutide 1.0 mgChange in Pulse Rate2.8 Beats per minuteStandard Deviation 10
Semaglutide 2.0 mgChange in Pulse Rate3.3 Beats per minuteStandard Deviation 9.5
Secondary

Change in Waist Circumference

Change from baseline (week 0) to week 40 in waist circumference was evaluated. Results are based on the 'on-treatment without rescue medication' observation period, which started at the date of first dose of trial product to either first initiation of rescue medication or the day of last dose of trial product, whichever came first.

Time frame: Week 0, week 40

Population: The FAS included all randomized participants. Overall number of participants analyzed=number of participants contributed to the analysis.

ArmMeasureValue (MEAN)Dispersion
Semaglutide 1.0 mgChange in Waist Circumference-5.2 Centimeter (cm)Standard Deviation 6.1
Semaglutide 2.0 mgChange in Waist Circumference-5.9 Centimeter (cm)Standard Deviation 6.2
Secondary

Number of Treatment-emergent Severe or Blood Glucose (BG) Confirmed Symptomatic Hypoglycaemic Episodes

Hypoglycaemic episodes defined as treatment-emergent if the onset of the episode occurs within the on-treatment observation period. Severe or BG-confirmed symptomatic hypoglycaemia is an episode that required assistance from another person for recovery and blood glucose-confirmed by a plasma glucose value \<3.1 mmol/L (56 milligrams per deciliter (mg/dL)) with symptoms consistent with hypoglycaemia. Results are based on the 'on-treatment' observation period, which started at the date of first dose of trial product and ended at the first date of any of the following: the follow-up visit (week 47), the treatment discontinuation follow-up visit (end of treatment + 7 weeks), the date of last dose of trial product +49 days or the end-date for the 'in-trial' observation period.

Time frame: Week 0 to week 47

Population: The SAS included all participants exposed to at least one dose of trial product.

ArmMeasureValue (NUMBER)
Semaglutide 1.0 mgNumber of Treatment-emergent Severe or Blood Glucose (BG) Confirmed Symptomatic Hypoglycaemic Episodes28 Episodes
Semaglutide 2.0 mgNumber of Treatment-emergent Severe or Blood Glucose (BG) Confirmed Symptomatic Hypoglycaemic Episodes21 Episodes
Secondary

Participants Who Achieved HbA1c ≤ 6.5%

Percentage of participants who achieved HbA1c ≤ 6.5% is presented. Results are based on the 'on-treatment without rescue medication' observation period, which started at the date of first dose of trial product to either first initiation of rescue medication or the day of last dose of trial product, whichever came first. Missing HbA1c assessment at week 40 was imputed using observed data from participants within same treatment group.

Time frame: Week 40

Population: The FAS included all randomized participants.

ArmMeasureValue (NUMBER)
Semaglutide 1.0 mgParticipants Who Achieved HbA1c ≤ 6.5%38.5 Percentage of participants
Semaglutide 2.0 mgParticipants Who Achieved HbA1c ≤ 6.5%51.7 Percentage of participants
Secondary

Participants Who Achieved HbA1c < 7.0%

Percentage of participants who achieved HbA1c \< 7.0% is presented. Results are based on the 'on-treatment without rescue medication' observation period, which started at the date of first dose of trial product to either first initiation of rescue medication or the day of last dose of trial product, whichever came first. Missing HbA1c assessment at week 40 was imputed using observed data from participants within same treatment group.

Time frame: Week 40

Population: The FAS included all randomized participants.

ArmMeasureValue (NUMBER)
Semaglutide 1.0 mgParticipants Who Achieved HbA1c < 7.0%57.5 Percentage of participants
Semaglutide 2.0 mgParticipants Who Achieved HbA1c < 7.0%67.6 Percentage of participants
Secondary

Participants Who Achieved Weight Loss ≥10%

Percentage of participants who achieved weight loss ≥10% is presented. Results are based on the 'on-treatment without rescue medication' observation period, which started at the date of first dose of trial product to either first initiation of rescue medication or the day of last dose of trial product, whichever came first. Missing body weight assessment at week 40 was imputed using observed data from participants within same treatment group.

Time frame: Week 40

Population: The FAS included all randomized participants.

ArmMeasureValue (NUMBER)
Semaglutide 1.0 mgParticipants Who Achieved Weight Loss ≥10%22.6 Percentage of participants
Semaglutide 2.0 mgParticipants Who Achieved Weight Loss ≥10%28.4 Percentage of participants
Secondary

Participants Who Achieved Weight Loss ≥5%

Percentage of participants who achieved weight loss ≥5% is presented. Results are based on the 'on-treatment without rescue medication' observation period, which started at the date of first dose of trial product to either first initiation of rescue medication or the day of last dose of trial product, whichever came first. Missing body weight assessment at week 40 was imputed using observed data from participants within same treatment group.

Time frame: Week 40

Population: The FAS included all randomized participants.

ArmMeasureValue (NUMBER)
Semaglutide 1.0 mgParticipants Who Achieved Weight Loss ≥5%51.3 Percentage of participants
Semaglutide 2.0 mgParticipants Who Achieved Weight Loss ≥5%59.2 Percentage of participants

Source: ClinicalTrials.gov · Data processed: Feb 22, 2026