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RecruitingPhase 2

The Effect of Glycemic Control and of GLP-1 Receptor Agonism on Islet GLP-1 in People With Type 1 and Type 2 Diabetes

The Effect of Glycemic Control and of GLP-1 Receptor Agonism on Islet GLP-1 in People

Lead sponsor

Mayo Clinic

Asset

Liraglutide

Subcutaneous · GLP-1 agonist

Listed sites

1

Recruiting sites

1

Enrollment

60

estimated

Study population

Type 1 diabetes, Type 2 diabetes

Key I/E criterion

Primary endpoints

Effect of exendin 9-39 on fasting glucagon secretion rate beforeEffect of exendin 9-39 on glucagon secretion rate during hyperglycemia before

Footprint

Where this trial recruits

Site locations as reported to ClinicalTrials.gov. Site count is not enrollment count; per-site enrollment is not available from source.

Identifiers

Registered as

NCT IDNCT06976619
Org study ID24-007682

Timeline

Milestones

Study first posted2025-05-16actual
Study start2025-10-03actual
Last update posted2025-10-14actual
Primary completion2028-10-30estimated
Study completion2029-03-31estimated

Assets

Investigational agents

Study populations

Who this study enrolls

Type 1 diabetesType 2 diabetes

Eligibility

Who can enroll

Minimum age25 Years
Maximum age70 Years
SexAll
Healthy volunteersNot accepted

Inclusion criteria

Type 1 or type 2 diabetes treated with insulin

Exclusion criteria

1. Age < 25 or > 70 years.

2. HbA1c > 10.0%

3. For female subjects: positive pregnancy test at the time of enrollment or study

4. History of prior upper abdominal surgery such as adjustable gastric banding, pyloroplasty and vagotomy.

5. Prior use of GLP-1 receptor agonists in the previous year.

6. Active systemic illness or malignancy.

7. Symptomatic macrovascular or microvascular disease.

Endpoints (4)

What's being measured

Protocol endpoints and posted registry outcome measures, grouped into outcome categories. Composite endpoints show their component event types. Standard codes (LOINC, SNOMED CT) are shown where available.

Coverage by outcome category

Other (unclassified)
3
Glycemic / diabetes
1

Glycemic / diabetes

1 endpoint
Primary/protocol endpoint

Effect of exendin 9-39 on fasting glucagon secretion rate before and after liraglutide treatment

Time frame:The change in fasting glucagon secretion rate (saline vs. exendin 9-39) in the baseline study will be compared with the change in fasting glucagon secretion rate (saline vs. exendin 9-39) after 30 days of treatment with liraglutide (post-liraglutide)

change from baseline, improvement

Other (unclassified)

3 endpoints
Primary/protocol endpoint/low confidence

Effect of exendin 9-39 on glucagon secretion rate during hyperglycemia before and after liraglutide

Time frame:The change in glucagon secretion rate during hyperglycemia (saline vs. exendin 9-39) in the baseline study will be compared with the change (saline vs. exendin 9-39) after 30 days of treatment with liraglutide (post-liraglutide)

change from baseline, improvement

Secondary/protocol endpoint/low confidence

Effect of exendin 9-39 on fasting glucagon secretion rate in people with type 1 diabetes vs type 2 diabetes

Time frame:The change in fasting glucagon secretion (saline vs. exendin 9-39) in the baseline studies will be compared in people with type 1 diabetes vs type 2 diabetes

change from baseline, improvement

Secondary/protocol endpoint/low confidence

Effect of exendin 9-39 on glucagon secretion rate during hyperglycemia in people with type 1 diabetes vs type 2 diabetes

Time frame:The change in glucagon secretion during hyperglycemia (saline vs. exendin 9-39) in the baseline studies will be compared in people with type 1 diabetes vs type 2 diabetes

change from baseline, improvement

Provenance

Sources

Trial identity, design, statusClinicalTrials.gov API v2
Snapshot dateJuly 1, 2026
Endpoint classificationDelfa endpoint taxonomy v2 (May 13, 2026)
Results tableno registry results posted yet

Trial facts come from public ClinicalTrials.gov records. Endpoint categories are Delfa's classification of those records, not a ClinicalTrials.gov field. All figures reflect the July 1, 2026 snapshot.