Recruiting

GLP-1

Sponsor:

The University of Texas Health Science Center, Houston

Code:

NCT05119179

Conditions

PreDiabetes

Eligibility Criteria

Sex: All

Age: 18+

Healthy Volunteers: Not accepted

Interventions

Semaglutide

Study Details

Brief summary:

This project uses both transcriptomic- and genomic-level data to identify mechanisms of individual responses to glucagon-like peptide-1 (GLP-1) in Mexican-Americans with prediabetes. The GLP-1 hormone is essential for glucose reduction, weight loss, cardiovascular risk reduction, and renal protection. Newly discovered mechanisms will illuminate causal links between disease genotype and phenotype, which may ultimately guide personalized therapeutic approaches for type 2 diabetes, prediabetes, obesity, cardiovascular disease, renal disease, and other related diseases.

Conditions

PreDiabetes

Study ID

NCT05119179

Start date

Nov 22, 2021

Status verified date

Mar, 2026

Completion date

Oct 31, 2026

Anticipated

Primary completion date

Oct 31, 2026

Anticipated

Eligibility Criteria

Eligibility Criteria

Sex: All

Age: 18+

Healthy Volunteers: Not accepted

Inclusion criteria:

1. Men and women, ages 18 years and older
2. Diagnosis of Prediabetes - defined as either impaired fasting glucose (fasting glucose of 100-125 mg/dL), impaired glucose tolerance (2-hour postprandial blood glucose of 140-199 mg/dL after 75-gram oral glucose challenge), and/or a hemoglobin A1C ranging from 5.7% to 6.4%
3. High risk for progression to diabetes: defined as having at least one of the two following additional factors: Obesity (BMI ≥ 30 kg/m2) and/or metabolically unhealthy status. "Metabolically unhealthy status" is defined as at least two of the following: elevated blood pressure (SBP ≥ 130 mmHg and/or DBP ≥ 85 mmHg), elevated triglycerides ≥ 150 mg/dL, low HDL cholesterol (males < 40 mg/dL; females < 50 mg/dL), and elevated fasting glucose ≥ 100 mg/dL (Wu S et al., 2017).
4. Women of childbearing age must agree to use an acceptable method of pregnancy prevention (barrier methods, abstinence, hormonal contraception, intrauterine contraception, or surgical sterilization) for the duration of the study.
5. Patients must have the following laboratory values: Hematocrit ≥ 34 vol%, estimated glomerular filtration rate ≥ 60 mL/min per 1.73 m2, AST (SGOT) < 2.5 times ULN, ALT (SGPT) < 2.5 times ULN, alkaline phosphatase < 2.5 times ULN

Exclusion Criteria:

1. History of Type 1 or Type 2 diabetes mellitus
2. Pregnant or breastfeeding women
3. Medications: metformin, DPP-4 inhibitors, GLP-1 receptor agonists, SGLT-2 inhibitors, thiazolidinediones, insulin, sulfonylureas, meglitinides, alpha-glucosidase inhibitors, and/or corticosteroids over the last 3 months.
4. Active malignancy
5. History of clinically significant cardiac, hepatic, pancreatic or renal disease.
6. History of any serious hypersensitivity reaction to the study medication (or any other incretin mimetic)
7. Prisoners or subjects who are involuntarily incarcerated
8. Prior history of pancreatitis, medullary thyroid cancer, or multiple endocrine neoplasia type 2 (MEN 2)
9. Family history of medullary thyroid cancer (a rare form of thyroid cancer) or MEN2. However, as many individuals may not be aware of the specific type of thyroid cancer, will also exclude any family history of thyroid cancer or MEN2.
10. Hospitalization for COVID-19 in last 3 months

Study Design

Enrollment

300 participants

Anticipated

Intervention Model

Single group

Primary purpose

Treatment

Interventions and Outcome Measures

Arms

experimental: Semaglutide

Semaglutide 0.25 mg subcutaneously weekly for 4 weeks, followed by semaglutide 0.5 mg subcutaneously weekly for 8 weeks.

Interventions

Semaglutide

Glucagon-like Peptide 1 Receptor Agonist

Primary outcome measure

  • Mean change in beta cell responsivity [ Time Frame: 12 weeks ]
  • Insulin Sensitivity [ Time Frame: 12 weeks ]
  • Disposition Index [ Time Frame: 12 weeks ]
  • GLP-1-Induced Potentiation [ Time Frame: 12 weeks ]
  • Mean change in GLP-1 Area Under the Curve (AUC) [ Time Frame: 12 weeks ]
  • Gene expression changes for minor variants of eQTLs for TCF7L2 [ Time Frame: 12 weeks ]
  • Gene expression changes for minor variants of eQTLs for KCNQ1 [ Time Frame: 12 weeks ]
  • Gene expression changes for minor variants of eQTLs for WFS1 [ Time Frame: 12 weeks ]
  • Gene expression changes for minor variants of eQTLs for THADA [ Time Frame: 12 weeks ]
  • Gene expression changes for minor variants of eQTLs for CNR1 [ Time Frame: 12 weeks ]
  • Gene expression changes for minor variants of eQTLs for CTRB1 [ Time Frame: 12 weeks ]
  • Gene expression changes for minor variants of eQTLs for CTRB2 [ Time Frame: 12 weeks ]
  • Gene expression changes for minor variants of eQTLs for GLP1R [ Time Frame: 12 weeks ]
  • Gene expression changes for minor variants of eQTLs for CHST3 [ Time Frame: 12 weeks ]
  • Gene expression changes for minor variants of eQTLs for MTNR1B [ Time Frame: 12 weeks ]
  • Gene expression changes for minor variants of eQTLs for SORCS1 [ Time Frame: 12 weeks ]
  • Previously unidentified cis-eQTLs associated with change in gene expression due to GLP-1 challenge [ Time Frame: 12 weeks ]

Central Contacts and Locations

Locations

UTHealth Clinical Research Unit (CRU) at UT Brownsville

Recruiting

Brownsville, Texas, United States, 78520

Contacts

More Information

Sponsor

The University of Texas Health Science Center, Houston

Last update posted

Mar 17, 2026

Last verified

Mar, 2026

Keywords

  • prediabetes
  • Mexican-American
  • GLP-1
  • pharmacogenetics
  • expression quantitative trait loci

Trial information was received from ClinicalTrials.gov and was last updated on 2026-09-09. This information was provided to ClinicalTrials.gov by The University of Texas Health Science Center, Houston on 2026-03-17.