A Phase 2/3 interventional study of Semaglutide and Placebo in Type 1 Diabetes and Overweight , Obesity, sponsored by McGill University Health Centre/Research Institute of the McGill University Health Centre. Recruiting at 1 site in Canada. Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2026-10-23.
Sponsored by McGill University Health Centre/Research Institute of the McGill University Health Centre · Phase 2/3, Interventional, and Treatment
The goal of this 24 week double-blinded, randomized, parallel controlled clinical trial is to learn how semaglutide affects body composition in adults with type 1 diabetes and overweight/obesity.
The main question to answer is:
What effect does Semaglutide have on body composition in adults with type 1 diabetes and overweight/obesity compared to a placebo?
Around 40 participants will:
3,614 studies on the registry are indexed under Diabetes Mellitus, Type 1; 586 are open to participants now.
This study's planned enrollment of 40 is close to the median of 40 across 2,718 interventional studies indexed under Diabetes Mellitus, Type 1.
Browse Diabetes Mellitus, Type 1 studies →McGill University Health Centre/Research Institute of the McGill University Health Centre is the lead sponsor of 420 studies on the registry; 106 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
*If a history of proliferative retinopathy is present within the last year, written permission from the eligible participant's ophthalmologist or optometrist is required*
Participants will receive semaglutide via subcutaneous injection once a week for 24 weeks. Dosing will begin at 0.25 mg and will be increased every 4 weeks, to a maximum of 2.4 mg, if tolerated.
Drug: Semaglutide
Participants will receive a 0.9% normal saline placebo via subcutaneous injection once a week for 24 weeks. Dosing will begin at 0.25 mg and increase every 4 weeks until a maximum of 2.4 mg.
Drug: Placebo
Semaglutide will be administered subcutaneously once a week for 24 weeks. The starting dose will be 0.25 mg, with increases every 4 weeks to 0.5 mg, 1.0 mg, 1.7 mg, and up to 2.4 mg. Dose can be de-escalated or not escalated based on participant symptoms, preference, or clinician judgement.
A 0.9% normal saline placebo will be administered subcutaneously weekly for 24 weeks. The starting dose will be 0.25 mg, with increases every 4 weeks to 0.5 mg, 1.0 mg, 1.7 mg, and up to 2.4 mg.
Also known as: 0.9% normal saline
Change in lean mass
Change in total lean mass, measured in kilograms (kg).
Time frame: Baseline to 24 weeks of study drug use
Fat mass (kilograms)
Change in total fat mass measured in kilograms (kg) using dual-energy X-ray absorptiometry (DEXA).
Time frame: Baseline to 24 weeks
Proportion of lean mass to fat mass (percentage)
Change in the proportion of lean mass relative to fat mass as a percentage (%), measured using dual-energy X-ray absorptiometry (DEXA).
Time frame: Baseline to 24 weeks
Bone density (grams per cubic centimetre)
Change in bone density measured in grams per cubic centimetre (g/cm³) using dual-energy X-ray absorptiometry (DEXA).
Time frame: Baseline to 24 weeks
Appendicular lean mass and visceral fat mass (kilograms)
Change in appendicular lean mass and visceral fat mass measured in kilograms (kg) using dual-energy X-ray absorptiometry (DEXA).
Time frame: Baseline to 24 weeks
Weight (kilograms)
Change in body weight, measured in kilograms (kg), on an electronic scale.
Time frame: Baseline to midpoint (weeks 15-16) and 24 weeks
Hip circumference (centimetres)
Change in hip circumference, measured in centimetres (cm). Use a measuring tape to measure the largest circumference around the buttock area.
Time frame: Baseline to midpoint (weeks 15-16) and 24 weeks
Waist circumference (centimetres)
Change in waist circumference, measured in centimetres (cm) using anthropometric measurements. Use a measuring tape to measure at the level of the ischial crests as a landmark.
Time frame: Baseline to midpoint (weeks 15-16) and 24 weeks
Blood pressure (millimeters of mercury)
Change in blood pressure, measured in millimetres of mercury (mmHg), after a 5-minute reset, measured 3 times. We will average the 3 values.
Time frame: Baseline to 24 weeks
Mean peak torque
Change in mean peak torque during isokinetic and isometric knee extension/flexion, measured via Biodex. Results will be recorded as weight-based torque (Nm/kg).
Time frame: Baseline to 24 weeks
Handgrip strength test
Change in maximum handgrip strength for the dominant and non-dominant hands, measured in kilograms (kg) using a hand dynamometer.
Time frame: Baseline to 24 weeks
Six-minute walk test (distance in metre)
Change in the distance walked during the six-minute walk test (6MWT), measured in metres (m).
Time frame: Baseline to 24 weeks
General physical activity (steps/day)
Change in average number of steps per day measured using an accelerometer.
Time frame: Baseline to midpoint (weeks 15-16) and 24 weeks
Time spent in different intensities of physical activity
Change in time spent in light, moderate, and vigorous physical activity, measured in minutes per day using an accelerometer.
Time frame: Baseline to midpoint (weeks 15-16) and 24 weeks
Mean total energy consumed per day
Change in mean total energy consumed per day, measured in kilocalories (kcals), using Keenoa. Keenoa - Food diary smartphone application
Time frame: Baseline to midpoint to 24 weeks
Mean total carbohydrates/fat/protein
Change in mean daily intake of carbohydrates, fat, and protein, measured in grams per day (g/day) and as a proportion of energy, using Keenoa. Keenoa - Food diary smartphone application
Time frame: Baseline to midpoint (weeks 15-16) and 24 weeks
Three-factor eating questionnaire R-18 scores
Change in the Three-Factor Eating Questionnaire (TFEQ-R18) is an 18-item validated questionnaire regarding eating behaviour and restraint, including subscores of uncontrolled eating, cognitive restraint, and emotional eating.
Time frame: Baseline to 24 weeks
Canadian Food Intake Screener score
Change in the Canadian Food Intake Screener score (CFIS): a 16-item survey assessing healthy eating habits in relation to the Canadian Food Guide
Time frame: Baseline to 24 weeks
Modified Hypoglycemia Fear Survey II (mHFS-II).
A survey validated in type 1 diabetes to quantify fear of hypoglycemia based on a 5-point Likert scale, with higher scores associated with worsened fear of hypoglycemia. There are 2 subscales: i) HFS-Fear and ii) HFS-Behaviour. This has a total of 32 items.
Time frame: Baseline to 24 weeks
Diabetes Distress Scale (DDS).
A 17-item survey to quantify diabetes distress based on a 6-point Likert scale, with higher points associated with worsened diabetes distress. A mean item score of 2.0-2.9 signifies moderate distress, whereas a mean item score ≥ 3.0 signifies high distress.
Time frame: Baseline to 24 weeks
Diabetes Quality-of-Life Brief Clinical Inventory (DQOLBCI).
A 15-item survey validated in type 1 diabetes to assess quality of life reflective of treatment satisfaction. It is based on a 5-point Likert scale, with lower scores reflective of better
Time frame: Baseline to 24 weeks
Change in individual Continuous Glucose Monitoring metrics
* Time spent between 3.9-10 millimoles per litre (Time in Range) as % * Time spent \< 3.9 millimoles per litre (mmol/L) (Time below Range) as % * Time spent above 10 millimoles per litre (mmol/L) (Time above range) as %
Time frame: Baseline to midpoint (weeks 15-16) and 24 weeks
Glycated hemoglobin
Measure of average glucose control over the last 3-4 months (in keeping with the lifespan of red blood cells), with a target of \< 7 percent. Measured as %.
Time frame: Baseline to midpoint (15-16 weeks) and 24 weeks
Mean daily insulin requirements
Mean daily insulin requirements, including total, basal and bolus.
Time frame: Baseline to midpoint (15-16 weeks) and 24 weeks
Lipid levels
Total cholesterol, Low-Density Lipoprotein-cholesterol, High-Density Lipoprotein-cholesterol, triglycerides (mmol/L)
Time frame: Baseline to 24 weeks
Exercise sub-study: glucose levels
Differences in continuous glucose metrics (within 2 hours and 24 hours), between semaglutide and placebo for a) resistance training and b) aerobic training.
Time frame: Week 26-27 of study drug use
Exercise sub-study: insulin needs
Insulin requirements over 24 hours between semaglutide and placebo for a) resistance training and b) aerobic training.
Time frame: week 26-27
Number of episodes of severe hypoglycemia (safety outcome)
Number of episodes of severe hypoglycemia * Requiring emergency room visit * Requiring hospitalization * Not requiring medical attention
Time frame: Baseline to 24 weeks
Number of episodes of ketone levels ≥ 1.5 millimoles per liter (safety outcome)
Number of episodes with ketone levels ≥ 1.5 millimoles per litre (mmol/L). * Requiring an emergency room visit * Requiring hospitalization * Diagnosed with diabetic ketoacidosis
Time frame: Baseline to 24 weeks
Gastrointestinal side effects (safety outcome)
Gastrointestinal side effects * Gallbladder disease * Acute pancreatitis * Rise in liver enzymes
Time frame: Baseline to 24 weeks
Diabetic retinopathy (safety outcome)
Diabetic retinopathy * New * Progression * Sight-threatening
Time frame: Baseline to 24 weeks
Serum creatinine (safety outcome)
Rise in creatinine (micromol/L)
Time frame: Baseline to midway to 24 weeks
Urine albumin: creatinine ratio (safety outcome
Change in albuminuria (mg/mmol)
Time frame: Baseline to midway to 24 weeks
Liver enzymes
Change in liver enzymes (alanine aminotransferase and alkaline phosphatase, Units/L
Time frame: Baseline to midway to 24 week
Plan to share: Undecided — Sharing would be case-by-case basis to protect the anonymity of participants and to ensure it is for non-commercial use.
No publications or documents are linked to this record.
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
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Studies of the drug tested here: Semaglutide
McGill University Health Centre/Research Institute of the McGill University Health Centre →