Gestational Response, Outcomes, and Weight After GLP-1 Use (GROW)

July 30, 2026 updated by: Johanna Finkle, University of Kansas Medical Center

The goal of this observational study is to learn if using GLP-1RA medications for weight loss before pregnancy influences gestational weight gain and pregnancy outcomes. The main aims of the study are to:

  • Compare gestational weight gain between women with preconception GLP-1RA exposure and those without exposure.
  • Compare obstetrical outcomes between women with preconception GLP-1RA exposure and those without exposure.

Researchers will compare pregnant women with a history of GLP-1RA use to pregnant women who have not used a GLP-1RA to compare differences.

Participants will be asked to complete questionnaires at multiple timepoints during and after pregnancy that ask questions about medication history, thoughts and feelings around food, etc.

Study Overview

Status

Recruiting

Conditions

Detailed Description

Glucagon-like peptide-1 receptor agonists (GLP-1RAs) have become widely used for the treatment of obesity because they produce substantial weight loss and improve cardiometabolic health. As use of these medications increases among women of reproductive age, more individuals are conceiving after treatment with GLP-1RAs. Because GLP-1RAs are not recommended during pregnancy, therapy is typically discontinued before conception or immediately after pregnancy is recognized. Although weight regain following GLP-1RA discontinuation has been demonstrated in nonpregnant populations, the effects of discontinuation on gestational weight gain and pregnancy outcomes remain poorly understood.

The GROW study is a prospective observational cohort study designed to evaluate the association between preconception GLP-1RA exposure and maternal and neonatal outcomes. Approximately 400 pregnant women aged 18 to 45 years who are at or before 20 weeks of gestation will be enrolled. Participants will be classified according to whether they used a GLP-1RA within the three years prior to conception. This is an observational study, and no investigational treatment or intervention will be provided.

Participants will complete questionnaires at baseline, during late pregnancy (32-36 weeks gestation), 6-10 weeks postpartum, and 6 months postpartum. Information collected will include demographic characteristics, history of GLP-1RA use, food noise, dietary intake (optional), addictive-like eating behaviors, and infant feeding practices. Maternal and neonatal clinical outcomes will be abstracted from the electronic medical record.

The primary objective is to compare gestational weight gain between women with and without preconception GLP-1RA exposure. Secondary objectives are to compare obstetrical outcomes, food noise, and dietary intake between groups. Findings from this study will improve understanding of the effects of GLP-1RA discontinuation before pregnancy and may help inform counseling and clinical management of women who conceive after treatment with these medications.

Study Type

Observational

Enrollment (Estimated)

400

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Locations

  • United States
    • Kansas
      • Kansas City, Kansas, United States, 66160
        • Recruiting
        • University of Kansas Medical Center
        • Contact:
        • Principal Investigator:
          • Johanna Finkle, MD

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult

Accepts Healthy Volunteers

Yes

Sampling Method

Non-Probability Sample

Study Population

Pregnant women being seen at The University of Kansas Health System for an initial prenatal visit.

Description

Inclusion Criteria:

  • Adult women
  • Less than or equal to 20 weeks gestation at first visit
  • English speaking

Exclusion Criteria:

  • <18 years at time of initial visit
  • Type 2 diabetes
  • History of bariatric surgery
  • Multiple gestation
  • Cannot consent for themselves
  • Cannot read and speak English
  • Incarcerated

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
GLP-1RA users
Participants with a history of GLP-1RA use.
GLP-1RA nonusers
Participants who have never used a GLP-1RA medication.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Gestational weight gain
Time Frame: From the start of pregnancy to delivery.
Total gestational weight gain, calculated from clinical weight measurements recorded in the electronic medical record and compared between participants with preconception GLP-1RA exposure and those without exposure.
From the start of pregnancy to delivery.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University of Kansas Medical Center

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

April 13, 2026

Primary Completion (Estimated)

April 1, 2028

Study Completion (Estimated)

April 1, 2028

Study Registration Dates

First Submitted

July 30, 2026

First Submitted That Met QC Criteria

July 30, 2026

First Posted (Actual)

August 4, 2026

Study Record Updates

Last Update Posted (Actual)

August 4, 2026

Last Update Submitted That Met QC Criteria

July 30, 2026

Last Verified

July 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • STUDY00162395

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

De-identified individual participant data will not be made available to other researchers because data sharing is not included in the study protocol or informed consent.

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Subscribe