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Energy Balance & Weight Loss in Craniopharyngioma-related or Other Hypothalamic Tumors in Hypothalamic Obesity

Glucagon-Like Peptide-1 Agonist Effects on Energy Balance in Hypothalamic Obesity

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02664441
Acronym
ECHO
Enrollment
42
Registered
2016-01-27
Start date
2016-03-31
Completion date
2020-07-31
Last updated
2022-05-05

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

Conditions

Hypothalamic Obesity

Keywords

Obesity, Drug intervention, Children, Adolescents, Young adults, Hypothalamic lesion, Change of weight status, Food intake, Energy expenditure, Hormonal changes, Glucagon-like peptide-1 agonist, Bydureon, Weight Loss, Energy balance

Brief summary

The proposed multicenter study will test the effect of glucagon-like peptide (GLP)-1 agonist exenatide once weekly extended-release (ExQW, Bydureon®) on clinical outcomes and metabolic parameters in a double-blind, placebo-controlled 36 week randomized trial with an 18 week open label extension. Following baseline testing, 48 patients will be randomly assigned with equal allocation to ExQW or matching placebo injection for 36 weeks, followed by an 18 week open label extension during which all patients receive ExQW. Changes of weight status, body composition, free-living total daily energy expenditure (EE) by doubly labeled water (DLW), activity by acetimetry, energy intake (questionnaires and food diary), as well as glucose tolerance and hormonal parameters of energy homeostasis and insulin resistance will be assessed before treatment and at the end of the placebo-controlled phase (week 36). Activity, metabolic outcomes, energy intake will be also assessed at study week 18 (mid treatment of randomized study), as well as week 54 (end of open label treatment).

Detailed description

Excessive weight gain and its cardiometabolic sequela are frequent complications of hypothalamic tumors, a condition known as hypothalamic obesity (HO). Most tumors in this region are craniopharyngiomas (CP),1 which constitute 5-9% of childhood brain tumors. Patients with CP typically become obese and have more features of the metabolic syndrome compared to matched controls. Overall, a 3-19-fold higher cardiovascular mortality had been reported, and a recent nationwide population-based study in Sweden demonstrated increased rates for cerebral infarction (7-fold), death due to cerebrovascular diseases (5-fold), and type 2 diabetes mellitus (6-fold) in CP patients in comparison to the general population. Thus, early and effective management of obesity is vital for this population, which is more resistant to treatment than uncomplicated obesity. Recognized risk factors for severe obesity include large hypothalamic tumors or lesions affecting several medial and posterior hypothalamic nuclei that impact satiety signaling pathways. Structural damage in these nuclei often lead to uncontrolled appetite, rapid weight gain, central insulin and leptin resistance, decreased sympathetic activity, low energy expenditure (EE), and increased energy storage in adipose tissue. Recently, the investigators developed a semi-quantitative assessment of hypothalamic damage on brain magnetic resonance imaging (MRI) to predict the risk for HO development in CP. Previous results of treating HO with a glucagon-like-peptide-1 receptor agonist (GLP1RA) in rats and humans provide promising proof-of-principle data to support this current randomized clinical trial. The primary hypothesis of this study is that drugs causing weight loss via intact hindbrain signaling pathways offer a desperately needed option for treatment of HO, even in very obese HO subjects with severe hypothalamic damage. Induction of weight loss by GLP1RAs is believed to be related to multiple mechanisms involving the gastrointestinal tract, vagus nerve, and the brain leading to increased satiety. Peripheral administration of GLP-1 or GLP1RA reduces blood glucose and energy intake in humans and rodents, and long-term treatment results in loss of body weight. Critically, the investigators do not know whether GLP1RA treatment affects EE and activity, or whether the site and size of brain lesions affect responses to GLP1RA treatment. The investigators' previous clinical studies of the GLP1RA exenatide in obese adolescents and adults have generated the critical safety and efficacy data needed to design a clinical trial. In a pilot study conducted at Children's Hospitals and Clinics of MN, pretreatment hyperphagia was associated with BMI reduction. Using these data, the investigators have designed a prospective, multicenter trial that will examine the effects of GLP1RA on BMI, cardiovascular disease (CVD) risk factors, energy homeostasis and other factors in subjects with HO secondary to CP.

Interventions

DRUGExenatide

Weekly injections of active drug.

DRUGplacebo

Weekly placebo injections

Sponsors

Children's Hospitals and Clinics of Minnesota
CollaboratorOTHER
Vanderbilt University
CollaboratorOTHER
Seattle Children's Hospital
Lead SponsorOTHER

Study design

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

Eligibility

Sex/Gender
ALL
Age
10 Years to 25 Years
Healthy volunteers
No

Inclusion criteria

* Age 10-25 years at time of enrollment * Diagnosis of hypothalamic obesity with age- and sex adjusted BMI ≥ 95% or BMI ≥30 kg/m² if over 18 y * History of craniopharyngioma or another tumor located in the hypothalamic area * Hypothalamic lesion documented by neuroradiology * ≥ 6 months post-surgical or radiation treatment * Weight stable or increasing over 3 months prior to screening visit * Stable hormone replacement for at least 3 months prior to screening visit

Exclusion criteria

* Renal impairment (GFR\<60 ml/min/1.73m² using the Schwarz formula) * History of gastroparesis; pancreatitis or gallstones (unless status post cholecystectomy) * Family history of multiple endocrine neoplasia type 2 or familial medullary thyroid carcinoma metabolic disorders * Any insulin-treated diabetes mellitus, poorly controlled type 2 diabetes (HbA1c ≥ 10%), or any other chronic serious medical conditions such as cardiovascular disease, malignancy or hematologic disorder, complicated syndromic disorder, or psychiatric disorders (schizophrenia, major depression, history of suicide attempts) * Calcitonin \>50 mg/L at screening * Initiation of weight loss medications within 3 months of screening visit * Previous donation of blood \>10% of estimated blood volume within 3 months prior study * Current warfarin use * Current use of any other GLP1 receptor agonist * Untreated thyroid disorder or adrenal insufficiency * History of bariatric surgery or planned bariatric surgery until end of study * Pregnancy, lactation or expectation to conceive during study period * Subject unlikely to adhere to study procedures in opinion of investigator * Subject with contraindication to neuroimaging by MRI

Design outcomes

Primary

MeasureTime frameDescription
Percent Change of Body Mass Index (BMI) as Calculated by the Formula: Body Weight in kg Divided by Height in Meters².From baseline to 36 weeksPercent change of body mass index (BMI), as calculated by the formula: body weight in kg divided by height in meters², between baseline and the end of the 36-week randomized drug treatment phase.

Secondary

MeasureTime frameDescription
Changes in Fat and Total Calorie Intake Assessed by Free Buffet Meal Analysis.From baseline to 36 weeksChanges in fat and total calorie intake during free buffet meals assessed at baseline and after 36-weeks of study drug treatment. The buffet meal is an objective measure of satiety as it assesses food intake and choice after a caloric preload. A standardized test meal preload provided 20% of estimated daily caloric requirements,based on the Schofield-HW equation. The purpose of the test meal is to ensure that study participants are in an equally fed state. Ninety minutes later, an ad libitum buffet meal was served consisting of a wide variety of food items and more than the child's estimated daily calorie requirements will be offered (5,000 kcal). Children had access to the buffet for 30 min, after which calorie intake and composition of consumed foods was measured by weighing back uneaten food.
Changes in Fasting GlucoseFrom baseline to 36 weeksChange in fasting blood glucose between baseline and the end of the 36-week randomized drug treatment phase.
Changes in HDL Cholesterol and Triglycerides Assessed by Fasting LipidsFrom baseline to 36 weeksChange in fasting HDL cholesterol and triglycerides between baseline and the end of the 36-week randomized drug treatment phase.
Changes in Inflammation Assessed by C-reactive Protein (CRP)From baseline to 36 weeksChange in C-reactive protein (CRP) between baseline and the end of the 36-week randomized drug treatment phase.
Changes in Body Composition as Assessed by Body Fat Mass Using Dual Energy X-ray Absorptiometry (DEXA)At baseline and 36 weeksBody composition change between baseline and the end of the 36-week randomized drug treatment phase assessed by dual energy x-ray absorptiometry (DEXA) and expressed as the change in adipose tissue mass.
Changes of Circulating Leptin LevelsFrom baseline to 36 weeksChange in circulating leptin between baseline and the end of the 36-week randomized drug treatment phase.
Changes of Energy Expenditure Assessed by Doubly Labeled Water AnalysisBaseline and 36 weeksTotal energy expenditure in the free-living environment was measured using doubly labeled water which estimates carbon dioxide production by measuring the elimination of the tracers deuterium (²H) and oxygen-18 (¹⁸O) from the body. These measures are used to determine the average daily rate of carbon dioxide production which is then used to calculate total energy expenditure using an equation from Weir and an assumed food quotient (0.85).
Changes of Energy Intake Assessed by Automated Self-Administered 24-Hour Dietary Recall (ASA24-Kids)Baseline and 36 weeksSelf-reported daily energy intake was assessed by Automated Self-Administered 24-Hour Dietary Recall (ASA24-Kids, http://appliedresearch.cancer.gov/tools/instruments/asa24/), a web-based diet assessment tool that allows 24-hour diet recall using branded food items.
Changes in Glucose 120 Minutes Following an Oral Glucose Tolerance TestFrom baseline to 36 weeksChange in blood glucose measures 120 minutes post-glucose bolus during an oral glucose tolerance test between baseline and the end of the 36-week randomized drug treatment phase.
Changes of Insulin Resistance Assessed by Homeostasis Model Assessment of Insulin Resistance (HOMA-IR)From baseline to 36 weeksChanges of insulin resistance estimated by the homeostasis model assessment of insulin resistance (HOMA-IR) using the formula HOMA-IR = insulin \[mU/l\] x glucose \[mmol/l\]) / 22.5 where both insulin and glucose values are obtained from a fasting blood sample.

Countries

United States

Participant flow

Recruitment details

Patients aged 10-25 years of age with a diagnosis of hypothalamic obesity following treatment for craniopharyngioma were recruited from pediatric endocrinology outpatient clinics at the three research sites (Seattle Children's Hospital, Seattle, WA, USA; Children's Minnesota, St. Paul, MN, USA; and Vanderbilt University Medical Center, Nashville, TN, USA) and hypothalamic obesity internet support groups.

Pre-assignment details

Qualified participants started with a 2-week placebo run-in to test adherence to the protocol prior to randomization.

Participants by arm

ArmCount
Exenatide Once Weekly Extended-release
Injections of glucagon-like peptide (GLP)-1 agonist exenatide once weekly extended-release (Bydureon®) for 36 weeks in randomized intervention followed by 18 weeks open label exenatide once weekly extended-release. Exenatide: Weekly injections of active drug.
23
Matching Placebo
Weekly injections of placebo for 36 weeks followed by 18 weeks open label exenatide once weekly extended-release. placebo: Weekly placebo injections
19
Total42

Withdrawals & dropouts

PeriodReasonFG000FG001
18-week Open Label ExtensionAdverse Event10
18-week Open Label ExtensionDeath10
18-week Open Label ExtensionLost to Follow-up01
18-week Open Label ExtensionPhysician Decision10
36-week Randomized TrialAdverse Event20
36-week Randomized TrialLost to Follow-up10
36-week Randomized TrialWithdrawal by Subject03
RandomizationWithdrawal by Subject01

Baseline characteristics

CharacteristicExenatide Once Weekly Extended-releaseMatching PlaceboTotal
Age, Categorical
<=18 years
16 Participants14 Participants30 Participants
Age, Categorical
>=65 years
0 Participants0 Participants0 Participants
Age, Categorical
Between 18 and 65 years
7 Participants5 Participants12 Participants
Age, Continuous16.9 years
STANDARD_DEVIATION 4.3
16.9 years
STANDARD_DEVIATION 4.7
16.9 years
STANDARD_DEVIATION 4.4
Body Mass Index35.8 kg/m²
STANDARD_DEVIATION 6.6
38.7 kg/m²
STANDARD_DEVIATION 7.5
37.3 kg/m²
STANDARD_DEVIATION 7.1
Ethnicity (NIH/OMB)
Hispanic or Latino
2 Participants0 Participants2 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
21 Participants19 Participants40 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants1 Participants1 Participants
Race (NIH/OMB)
Black or African American
0 Participants1 Participants1 Participants
Race (NIH/OMB)
More than one race
2 Participants1 Participants3 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
21 Participants16 Participants37 Participants
Region of Enrollment
United States
23 participants19 participants42 participants
Sex: Female, Male
Female
14 Participants11 Participants25 Participants
Sex: Female, Male
Male
9 Participants8 Participants17 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
0 / 230 / 181 / 35
other
Total, other adverse events
21 / 2315 / 1817 / 35
serious
Total, serious adverse events
2 / 231 / 184 / 35

Outcome results

Primary

Percent Change of Body Mass Index (BMI) as Calculated by the Formula: Body Weight in kg Divided by Height in Meters².

Percent change of body mass index (BMI), as calculated by the formula: body weight in kg divided by height in meters², between baseline and the end of the 36-week randomized drug treatment phase.

Time frame: From baseline to 36 weeks

Population: Analyses include all participants randomized to a study drug and received at least one drug treatment administration. Missing data was imputed using a last observation carry-forward approach.

ArmMeasureValue (MEAN)Dispersion
Exenatide Once Weekly Extended-releasePercent Change of Body Mass Index (BMI) as Calculated by the Formula: Body Weight in kg Divided by Height in Meters².1.7 percent change from baselineStandard Error 0.8
Matching PlaceboPercent Change of Body Mass Index (BMI) as Calculated by the Formula: Body Weight in kg Divided by Height in Meters².3.5 percent change from baselineStandard Error 0.9
p-value: 0.495% CI: [-4.1, 0.6]Mixed Models Analysis
Secondary

Changes in Body Composition as Assessed by Body Fat Mass Using Dual Energy X-ray Absorptiometry (DEXA)

Body composition change between baseline and the end of the 36-week randomized drug treatment phase assessed by dual energy x-ray absorptiometry (DEXA) and expressed as the change in adipose tissue mass.

Time frame: At baseline and 36 weeks

Population: Of the 41 enrolled participants, 20 out of 23 participants randomized to exenatide once weekly extended-release and 15 out of 18 participants randomized to placebo completed both pre- and post-treatment assessments and are included in this analysis.

ArmMeasureValue (MEAN)Dispersion
Exenatide Once Weekly Extended-releaseChanges in Body Composition as Assessed by Body Fat Mass Using Dual Energy X-ray Absorptiometry (DEXA)1.5 kilogramsStandard Error 0.9
Matching PlaceboChanges in Body Composition as Assessed by Body Fat Mass Using Dual Energy X-ray Absorptiometry (DEXA)4.6 kilogramsStandard Error 1
p-value: 0.0295% CI: [-5.7, -0.4]Mixed Models Analysis
Secondary

Changes in Fasting Glucose

Change in fasting blood glucose between baseline and the end of the 36-week randomized drug treatment phase.

Time frame: From baseline to 36 weeks

Population: Analyses include all participants randomized to a study drug and received at least one drug treatment administration. Missing data was imputed using a last observation carry-forward approach.

ArmMeasureValue (MEAN)Dispersion
Exenatide Once Weekly Extended-releaseChanges in Fasting Glucose7.4 mg/dLStandard Error 6
Matching PlaceboChanges in Fasting Glucose3.7 mg/dLStandard Error 3.5
p-value: 0.1995% CI: [0.97, 2.08]Mixed Models Analysis
Secondary

Changes in Fat and Total Calorie Intake Assessed by Free Buffet Meal Analysis.

Changes in fat and total calorie intake during free buffet meals assessed at baseline and after 36-weeks of study drug treatment. The buffet meal is an objective measure of satiety as it assesses food intake and choice after a caloric preload. A standardized test meal preload provided 20% of estimated daily caloric requirements,based on the Schofield-HW equation. The purpose of the test meal is to ensure that study participants are in an equally fed state. Ninety minutes later, an ad libitum buffet meal was served consisting of a wide variety of food items and more than the child's estimated daily calorie requirements will be offered (5,000 kcal). Children had access to the buffet for 30 min, after which calorie intake and composition of consumed foods was measured by weighing back uneaten food.

Time frame: From baseline to 36 weeks

Population: Of the 41 enrolled participants, 18 out of 23 participants randomized to exenatide once weekly extended-release and 15 out of 18 participants randomized to placebo completed both pre- and post-treatment assessments and are included in this analysis.

ArmMeasureGroupValue (MEAN)Dispersion
Exenatide Once Weekly Extended-releaseChanges in Fat and Total Calorie Intake Assessed by Free Buffet Meal Analysis.Fat Intake-9.5 gramsStandard Error 6.3
Exenatide Once Weekly Extended-releaseChanges in Fat and Total Calorie Intake Assessed by Free Buffet Meal Analysis.Total Calorie Intake-287 gramsStandard Error 130
Matching PlaceboChanges in Fat and Total Calorie Intake Assessed by Free Buffet Meal Analysis.Total Calorie Intake224 gramsStandard Error 136
Matching PlaceboChanges in Fat and Total Calorie Intake Assessed by Free Buffet Meal Analysis.Fat Intake14.5 gramsStandard Error 7.7
Comparison: Analysis for Fat Intakep-value: 0.03295% CI: [-37.8, -2.7]Regression, Linear
Comparison: Analysis for Total Calorie Intakep-value: 0.0295% CI: [-761, -100]Regression, Linear
Secondary

Changes in Glucose 120 Minutes Following an Oral Glucose Tolerance Test

Change in blood glucose measures 120 minutes post-glucose bolus during an oral glucose tolerance test between baseline and the end of the 36-week randomized drug treatment phase.

Time frame: From baseline to 36 weeks

Population: Analyses include all participants randomized to a study drug and received at least one drug treatment administration. Missing data was imputed using a last observation carry-forward approach.

ArmMeasureValue (MEAN)Dispersion
Exenatide Once Weekly Extended-releaseChanges in Glucose 120 Minutes Following an Oral Glucose Tolerance Test-12.4 mg/dLStandard Error 10.9
Matching PlaceboChanges in Glucose 120 Minutes Following an Oral Glucose Tolerance Test-3.4 mg/dLStandard Error 3.7
p-value: 0.08895% CI: [-19.1, 2.1]Mixed Models Analysis
Secondary

Changes in HDL Cholesterol and Triglycerides Assessed by Fasting Lipids

Change in fasting HDL cholesterol and triglycerides between baseline and the end of the 36-week randomized drug treatment phase.

Time frame: From baseline to 36 weeks

Population: Analyses include all participants randomized to a study drug and received at least one drug treatment administration. Missing data was imputed using a last observation carry-forward approach.

ArmMeasureGroupValue (MEAN)Dispersion
Exenatide Once Weekly Extended-releaseChanges in HDL Cholesterol and Triglycerides Assessed by Fasting LipidsHDL Cholesterol0.7 mg/dLStandard Error 2.1
Exenatide Once Weekly Extended-releaseChanges in HDL Cholesterol and Triglycerides Assessed by Fasting LipidsTriglycerides-0.6 mg/dLStandard Error 8.1
Matching PlaceboChanges in HDL Cholesterol and Triglycerides Assessed by Fasting LipidsHDL Cholesterol0.6 mg/dLStandard Error 2.8
Matching PlaceboChanges in HDL Cholesterol and Triglycerides Assessed by Fasting LipidsTriglycerides4.2 mg/dLStandard Error 8.6
Comparison: Analysis for HDL Cholesterolp-value: 0.8295% CI: [0.91, 1.11]Mixed Models Analysis
Comparison: Analysis for Triglyceridesp-value: 0.9295% CI: [0.83, 1.19]Mixed Models Analysis
Secondary

Changes in Inflammation Assessed by C-reactive Protein (CRP)

Change in C-reactive protein (CRP) between baseline and the end of the 36-week randomized drug treatment phase.

Time frame: From baseline to 36 weeks

Population: Analyses include all participants randomized to a study drug and received at least one drug treatment administration. Missing data was imputed using a last observation carry-forward approach.

ArmMeasureValue (MEAN)Dispersion
Exenatide Once Weekly Extended-releaseChanges in Inflammation Assessed by C-reactive Protein (CRP)0.00 mg/dLStandard Error 0.07
Matching PlaceboChanges in Inflammation Assessed by C-reactive Protein (CRP)0.18 mg/dLStandard Error 0.27
p-value: 0.0395% CI: [0.41, 0.92]Mixed Models Analysis
Secondary

Changes of Circulating Leptin Levels

Change in circulating leptin between baseline and the end of the 36-week randomized drug treatment phase.

Time frame: From baseline to 36 weeks

Population: Analyses include all participants randomized to a study drug and received at least one drug treatment administration. Missing data was imputed using a last observation carry-forward approach.

ArmMeasureValue (MEAN)Dispersion
Exenatide Once Weekly Extended-releaseChanges of Circulating Leptin Levels1.4 ng/mLStandard Error 6.3
Matching PlaceboChanges of Circulating Leptin Levels11.8 ng/mLStandard Error 9.4
p-value: 0.6995% CI: [0.81, 1.1]Mixed Models Analysis
Secondary

Changes of Energy Expenditure Assessed by Doubly Labeled Water Analysis

Total energy expenditure in the free-living environment was measured using doubly labeled water which estimates carbon dioxide production by measuring the elimination of the tracers deuterium (²H) and oxygen-18 (¹⁸O) from the body. These measures are used to determine the average daily rate of carbon dioxide production which is then used to calculate total energy expenditure using an equation from Weir and an assumed food quotient (0.85).

Time frame: Baseline and 36 weeks

Population: Of the 41 enrolled participants, 19 out of 23 participants randomized to exenatide once weekly extended-release and 14 out of 18 participants randomized to placebo completed both pre- and post-treatment assessments and are included in this analysis.

ArmMeasureValue (MEAN)Dispersion
Exenatide Once Weekly Extended-releaseChanges of Energy Expenditure Assessed by Doubly Labeled Water Analysis-17.8 kcals/dayStandard Error 38
Matching PlaceboChanges of Energy Expenditure Assessed by Doubly Labeled Water Analysis146.3 kcals/dayStandard Error 29
p-value: 0.00495% CI: [-269.7, -63.1]Regression, Linear
Secondary

Changes of Energy Intake Assessed by Automated Self-Administered 24-Hour Dietary Recall (ASA24-Kids)

Self-reported daily energy intake was assessed by Automated Self-Administered 24-Hour Dietary Recall (ASA24-Kids, http://appliedresearch.cancer.gov/tools/instruments/asa24/), a web-based diet assessment tool that allows 24-hour diet recall using branded food items.

Time frame: Baseline and 36 weeks

Population: Of the 41 enrolled participants, 14 out of 23 participants randomized to exenatide once weekly extended-release and 9 out of 18 participants randomized to placebo completed both pre- and post-treatment assessments and are included in this analysis.

ArmMeasureValue (MEAN)Dispersion
Exenatide Once Weekly Extended-releaseChanges of Energy Intake Assessed by Automated Self-Administered 24-Hour Dietary Recall (ASA24-Kids)-62 kcalsStandard Error 155
Matching PlaceboChanges of Energy Intake Assessed by Automated Self-Administered 24-Hour Dietary Recall (ASA24-Kids)-210 kcalsStandard Error 336
p-value: 0.5895% CI: [-653.5, 363.4]Regression, Linear
Secondary

Changes of Insulin Resistance Assessed by Homeostasis Model Assessment of Insulin Resistance (HOMA-IR)

Changes of insulin resistance estimated by the homeostasis model assessment of insulin resistance (HOMA-IR) using the formula HOMA-IR = insulin \[mU/l\] x glucose \[mmol/l\]) / 22.5 where both insulin and glucose values are obtained from a fasting blood sample.

Time frame: From baseline to 36 weeks

Population: Analyses include all participants randomized to a study drug and received at least one drug treatment administration. Missing data was imputed using a last observation carry-forward approach.

ArmMeasureValue (MEAN)Dispersion
Exenatide Once Weekly Extended-releaseChanges of Insulin Resistance Assessed by Homeostasis Model Assessment of Insulin Resistance (HOMA-IR)3.5 HOMA-IR scoreStandard Error 1.7
Matching PlaceboChanges of Insulin Resistance Assessed by Homeostasis Model Assessment of Insulin Resistance (HOMA-IR)2.2 HOMA-IR scoreStandard Error 2.4
p-value: 0.3295% CI: [0.9, 2.14]Mixed Models Analysis

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026