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Study identifier: NCT06445946 Synced from ClinicalTrials.gov · July 28, 2026
● Recruiting

DECIDE: A Comparative Effectiveness Trial of Metformin Versus Insulin for the Treatment of Gestational Diabetes

Condition: Gestational Diabetes Mellitus · Pregnancy, High Risk  ·  Sponsor: Ohio State University

PhasePhase 4
Planned participants1572
Who can joinFemale, 18 Years to no upper limit
Healthy volunteersNo

About this study

This is a non-inferiority patient-centered and pragmatic comparative-effectiveness pregnancy randomized controlled trial (RCT) with postpartum maternal and child follow-up through 2 years of 1,572 individuals with gestational diabetes mellitus (GDM) randomized to oral metformin versus injectable insulin. This study will determine if metformin is not inferior to insulin in reducing adverse pregnancy outcomes, is comparably safe for exposed individuals and children, and if patient-reported factors, including facilitators of and barriers to use, differ between metformin and insulin. A total of 1,572 pregnant individuals with GDM who need pharmacotherapy will be recruited at 20 U.S. sites using consistent treatment criteria to metformin versus insulin. Participants and their children will be followed through delivery to two years postpartum.

This description comes directly from the study's public registry record.

Talk to the study team

Kartik Venkatesh, MD, PhD  ·  614-293-2222  ·  kartik.venkatesh@osumc.edu

Anna Bartholomew, MPH, BS, RN  ·  614-685-3229  ·  Anna.Bartholomew@osumc.edu

Always discuss trial participation with your own doctor first.

Locations (24)

University of AlabamaTuscaloosa, Alabama, United StatesRecruiting
Cedars Sinai Medical CenterLos Angeles, California, United StatesRecruiting
University of California San FranciscoSan Francisco, California, United StatesRecruiting
Christiana CareNewark, Delaware, United StatesWithdrawn
University of South FloridaTampa, Florida, United StatesRecruiting
Tufts UniversityBoston, Massachusetts, United StatesRecruiting
Massachusetts General HospitalBoston, Massachusetts, United StatesRecruiting
Beth Israel Deaconess Medical CenterBoston, Massachusetts, United StatesTerminated
Washington University in St. LouisSt Louis, Missouri, United StatesRecruiting
University of New MexicoAlbuquerque, New Mexico, United StatesRecruiting
Columbia University Irving Medical CenterNew York, New York, United StatesRecruiting
University of North CarolineChapel Hill, North Carolina, United StatesWithdrawn

+ 12 more locations — full list on the registry record.

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Source record: clinicaltrials.gov/study/NCT06445946