Pharmacogenetics of Response to GLP1R Agonists

Recruiting now · Phase 1

Conditions studied: Obesity, Diabetes Type 2

In brief

Overweight/obese otherwise healthy volunteers will be recruited from the Old Order Amish population in Lancaster County, PA. Lancaster County, PA. Pharmacodynamic responses to GLP1R agonist will be assessed by conducting frequently sampled intravenous glucose tolerance tests (FSIGT) both before and after semaglutide for six weeks. The proposal proposes two specific aims: 1. Specific Aim #1. To identify genetic variants associated with effects of a GLP1R agonist to enhance glucose-stimulated first phase insulin secretion in the two FSIGTs (before and after administration of drug). 2. Specific Aim #2. To identify genetic variants associated with the effect of a GLP1R agonist to accelerate the rate of glucose disappearance as assessed in the two FSIGTs (before and after administration of drug). Genotyping will be conducted using a high-density array with comprehensive coverage of DNA sequence variants. In addition, the analysis will leverage a global imputation panel generated from 1,025 Amish individuals.

Key facts

Study ID

NCT05071898

Run by

University of Maryland, Baltimore

People needed

600

Starts

2022-04-11

Expected to finish

2028-04-01

Last updated by the study team

2026-07-27

Who can join

Age: 18 and older, up to 89. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• BMI greater than or equal to 27 kg/m2
• Of Amish Descent

You may not qualify if…

• Woman of childbearing age who is sexually active
• History of diabetes (HbA1c > 6.5% or random glucose >200 mg/dL)
• Known allergy to semaglutide
• Medical issues, which in the judgment of the research physician or PIs might increase the risk associated with participation in the study
• eGFR < 60 mL/min/1.73 sq. m.
• Hematocrit < 35%
• TSH < 0.4 o4 > 5.5
• AST or ALT in excess of 2X the upper limit of normal
• Unable to discontinue a drug, vitamin, or nutritional supplement, which in the judgment of the research physician or PIs might alter the response to semaglutide
• Personal or family history of medullary carcinoma of the thyroid or multiple endocrine neoplasia, type 2

Where it is running

• Amish Research Clinic — Lancaster, Pennsylvania, United States (enrolling)

Full record on ClinicalTrials.gov

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