Home›Clinical trials›Glucagon-like Peptide 1, Glucose Metabolism and Gastric Bypass

A study of a study medicine, exendin-(9-39).

Recruiting now. Registry record last updated September 9, 2025.

Who can join
Adults 18 to 65.
What you take
Exendin-(9-39), given as part of the study. Check ClinicalTrials.gov for this trial's study groups, including any placebo or comparison medicine.
How long it lasts
The full study runs about 22 years.
What you get
Costs vary by study. Ask the study team what this one covers, including the study medicine, visits and travel, before you sign the consent form.
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Phase Phase 1Sponsor The University of Texas Health Science Center at San AntonioDrug exendin-(9-39)Class OtherSites 2 USEnrollment target 80

What this study is for

Primary condition: Post-bariatric Surgery.

Full scientific study title: Glucagon-like Peptide 1, Glucose Metabolism and Gastric Bypass.

Who can join

Age18 to 65SexAny

Adults 18 to 65. A site coordinator confirms whether you qualify during a free screening visit. The exact medical requirements are below.

Full medical eligibility (for you and your doctor)verbatim from the registry

This is the exact wording from ClinicalTrials.gov, including clinical measures (lab values, imaging scores). Bring it to your doctor if any of it is unclear.

Key inclusion criteria

  • age 18-65
  • healthy control without diabetes or active organ disease
  • Individuals with bariatric surgery
  • recurrent hypoglycemia post gastric bypass

Key exclusion criteria

  • pregnancy
  • significant anemia
  • diabetes currently unless pre-op for bariatric surgery procedure
  • GI obstruction

Where this trial is enrolling

This trial has 2 sites across 1 state. Contact a site coordinator directly to start screening.

Texas2 sites
  • Texas Diabetes Institute - University Health System
    San Antonio, Texas
    Jennifer Foster, MSN210-450-8696fosterj6@uthscsa.edu
  • South Texas Veterans Health Care System
    San Antonio, Texas
    Marzieh Salehi, MD MS210-567-6691salehi@uthscsa.edu

Timeline

Started enrolling: November 2005. Expected completion: August 2027. Last updated on ClinicalTrials.gov: September 9, 2025.

Official source

Every Monday we check this trial against ClinicalTrials.gov, the federal registry for clinical research. Last checked September 4, 2026. Confirm the current status there before you contact a site:

View on ClinicalTrials.gov →

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John Samaras, editor of GLP Chart
John Samaras, Founder and EditorI started GLP Chart after overpaying for a GLP-1 myself. Based in Austin, Texas.
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