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NCT04542148Active, not recruitingPhase 2

Glycemic Control After Antenatal Corticosteroids in Women With Pregestational and Gestational Diabetes

Glycemic Control After Antenatal Corticosteroids in Women With Pregestational and Gestational Diabetes (Close the GAP)

Source: ClinicalTrials.gov · Last updated 14 Jul 2026

Brief summary (registry, in English)

There is a fundamental gap in understanding the maternal and neonatal effects of antenatal corticosteroid (ACS) administration in women with threatened preterm birth (PTB) who have diabetes. Since the initial discovery of ACS for neonatal benefit in 1972, more than 40 randomized controlled trials have been performed evaluating its efficacy. However, none of these trials have included women with T2DM, and there is limited data among women with gestational diabetes. While ACS have been shown to reduce neonatal morbidity associated with PTB in non-diabetic women, the side effects of ACS (maternal hyperglycemia and fetal hyperinsulinemia) may mitigate the neonatal benefit of ACS in women with diabetes. Before neonatal benefit of ACS can be evaluated in this population, the first step is to optimize maternal glycemic control after ACS. Previous studies evaluating maternal hyperglycemia after ACS have been limited by small sample size, retrospective study design, or insufficient glucose data. Use of continuous glucose monitoring (CGM) in a randomized clinical trial provides a unique opportunity to overcome these challenges. Our long-term goal is to improve maternal and child health among women with diabetes as an independently funded clinical researcher. The research objectives of this proposal are to test the efficacy of three treatment strategies at achieving maternal glycemic control after ACS and evaluate the association between maternal glycemic control and neonatal outcomes. Our central hypothesis is that treatment with a continuous insulin infusion will improve maternal glycemic control, which is key to improving neonatal outcomes, but at the cost of less patient satisfaction and more health resource utilization. This hypothesis will be tested by pursuing the following specific aims: 1) Test the efficacy of three treatment strategies (addition of sliding scale insulin, up-titration of home insulin, and continuous insulin infusion) at achieving maternal glycemic control after ACS and 2) Quantify the association between maternal glycemic control after ACS and neonatal morbidity. Completion of these aims will determine the optimal strategy to achieve maternal glycemic control after ACS and inform a larger, multicenter trial to improve neonatal outcomes among women with diabetes and threatened PTB.

Status (registry)
Active, not recruiting
Phase (registry)
Phase 2
Study type
Interventional
Enrollment
120 (estimated)
First submitted
18 Aug 2020
Start date
10 Feb 2022
Primary completion date
30 Nov 2025
Lead sponsor
University of Alabama at Birmingham
NCT number
NCT04542148

What you commit to

  • Study type: Interventional · Phase 2
  • Planned participants: 120
  • From 10 Feb 2022 to the primary completion date, 30 Nov 2025
  • 4 sites in 1 country
  • Visits and tests: ask the trial team, the registry does not list them

Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.

Who cannot take part

Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.

Prior treatment

  • Planned delivery \< 72 hours after 1st dose of antenatal corticosteroids
  • More than 16 hours after 1st dose of antenatal corticosteroids

Other

  • Major fetal anomaly
  • Triplet or higher order multiple gestation

Who the study is looking for

  • Gestational or pregestational type 2 diabetes mellitus treated with daily insulin injection(s) or oral hypoglycemic agents such as metformin
  • Hospitalized for antenatal corticosteroid administration in anticipation of preterm birth
  • Gestational age 23 0/7 weeks - 36 5/7 weeks
  • Maternal age 18-50

Age in the registry: - to 50 years · Sex: All · Does not accept healthy volunteers

Full criteria on ClinicalTrials.gov

Sites (4)

Sites in registry order. Pick your city on the disease page to sort them by distance.

SiteCityCountrySite status
University of Alabama at Birmingham
Coordinator of this site? Confirm its status
BirminghamUnited StatesUnknown status
University of South Carolina Greenville / Prisma Health-Upstate
Coordinator of this site? Confirm its status
GreenvilleUnited StatesUnknown status
University of Texas Health Science Center at Houston
Coordinator of this site? Confirm its status
HoustonUnited StatesUnknown status
Oregon Health and Science University
Coordinator of this site? Confirm its status
PortlandUnited StatesUnknown status

This page is information, not medical advice. Discuss any trial with your doctor.