Impact of GLP-1Ra on Metabolic Outcomes in Early Stage Type 1 Diabetes

Optimizing Stage 2 T1DM Management: Assessing the Impact of GLP-1Ra on Metabolic Outcomes in Patients Receiving Teplizumab

Early Phase 1 Interventional Vanderbilt University Medical Center · NCT06338553

This study is testing if a new diabetes drug can help people with early stage Type 1 Diabetes improve their blood sugar control and heart health while they are also getting another treatment.

Quick facts

PhaseEarly Phase 1
Study typeInterventional
Enrollment24 (estimated)
Ages12 Years to 50 Years
SexAll
SponsorVanderbilt University Medical Center Academic / other
Drugs / interventionsteplizumab, immunotherapy
Locations1 site (Nashville, Tennessee)
Trial IDNCT06338553 on ClinicalTrials.gov

What this trial studies

This study investigates the effects of glucagon-like peptide-1 receptor agonists (GLP-1Ra) on individuals with stage 2 Type 1 Diabetes who are receiving teplizumab treatment. Participants will undergo liquid meal tests under different conditions to assess their blood sugar levels, insulin effectiveness, and blood vessel function. The study employs a crossover design, where participants will receive either the GLP-1Ra drug or a placebo, followed by various blood draws and ultrasound tests. The aim is to determine if GLP-1Ra can improve glycemic control and cardiovascular health in this population.

Who should consider this trial

Good fit: Ideal candidates are individuals aged 12-50 years with stage 2 Type 1 Diabetes and specific glycemic criteria.

Not a fit: Patients with significant comorbidities or those on certain medications may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved management of blood sugar levels and cardiovascular health for patients with early stage Type 1 Diabetes.

How similar studies have performed: Other studies have shown promising results with GLP-1Ra in diabetes management, suggesting potential success for this approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Aims 1-3: Stage 2 T1DM with TZIELD® and GLP-1Ra

Inclusion Criteria:

* Age: 12-50 years
* BMI: 18-31 kg/m2 (adults) or 5-95th %ile (pediatric)
* Stage 2 T1DM (i.e., ≥ 2 islet auto-antibodies and:
* fasting glucose ≥ 100 mg/dL and \< 126 mg/dL OR
* 2-hr OGTT /MMTT ≥ 140 mg/dL and \< 200 mg/dL OR
* During an OGTT having a glucose of \> 199 mg/dL at 30, 60, or 90 minutes)

Exclusion Criteria:

* Comorbidities:
* SBP \> 140 mmHg and DBP \> 100 mmHg
* eGFR by MDRD equation of \< 60 mL/min/1.73m2
* AST or ALT \> 2.5 times ULN
* Family history of medullary thyroid carcinoma
* Diagnosis of pancreatitis or gastroparesis within the past 3 years
* Medications: Any diabetes medication, any antioxidant vitamin supplement (\<2 weeks before a study), any systemic glucocorticoid, antipsychotic, atenolol, metoprolol, propranolol, niacin, any thiazide diuretic, any OCP with \> 35 mcg ethinyl estradiol, growth hormone, any immunosuppressant, antihypertensive, any antihyperlipidemic
* Other: pregnancy, peri- or post-menopausal women, active smoker

Aim 4: Early Stage 3 T1DM with GLP-1Ra Monotherapy Inclusion Criteria

* Age: 12-50 years
* BMI: 18-31 kg/m2 (adults) or 5-95th %ile (pediatric)
* Early stage 3 T1DM with either
* HbA1c 6.5% to 8.0% at diagnosis OR
* HbA1c 5.7% to 6.4% with oral glucose test meeting ADA criteria for stage 3 T1DM within the past three months prior to or during screening visit
* Time of stage 3 diagnosis: within eight weeks of first study visit

Exclusion Criteria

* DKA history: history of diabetic ketoacidosis requiring hospital admission
* Comorbidities:
* Family history of medullary thyroid carcinoma
* Diagnosis of pancreatitis or gastroparesis within the past 3 years
* Medications: Any diabetes medication, any antioxidant vitamin supplement (\<2 weeks before a study), any systemic glucocorticoid, antipsychotic, atenolol, metoprolol, propranolol, niacin, any thiazide diuretic, any OCP with \> 35 mcg ethinyl estradiol, growth hormone, any immunosuppressant, antihypertensive, any antihyperlipidemic
* Other: pregnancy, peri- or post-menopausal women, active smoker

Where this trial is running

Nashville, Tennessee

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Type 1 DiabetesStage 2 Type 1 DiabetesEarly Stage Type 1 DiabetesGLP1-RaRybelsusmixed meal tolerance testStage 3 Type 1 Diabetes
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.