Cited by 39Gestational Diabetes Research and ManagementPregnancy and Medication ImpactDiabetes Treatment and Management

Metformin in pregnancy to avert gestational diabetes in women at high risk: Meta‐analysis of randomized controlled trials

Open access
Doi, Suhail A.R., Furuya‐Kanamori, Luis, Toft, Egon, Musa, Omran A.H., Islam, Nazmul, Clark, Justin, Thalib, Lukman·2020·Obesity Reviews

Abstract

Summary: Previous randomized and observational studies on the efficacy of metformin in pregnancy to reduce incident gestational diabetes mellitus (GDM) in women at high risk (obesity, polycystic ovary syndrome [PCOS], or pregestational insulin resistance) have been conflicting and several groups are planning further randomized controlled trials (RCTs) to answer this question conclusively. This work assesses the efficacy of metformin in pregnancy to avert one outcome—incident GDM in women at high risk. We included RCTs comparing metformin with usual care or placebo controls in terms of incident GDM and recruiting women at high risk during early pregnancy. Eleven eligible trials enrolled 2370 adult women whose intervention arm consisted of metformin started at conception or before 20 weeks of gestation. Risk of GDM was similar in intervention compared with controls (risk ratio [RR] 1.03; 95% confidence interval [CI], 0.85‐1.24). The data were of sufficient quality meeting the criteria for consistency and directness. We conclude that metformin does not contribute to averting the GDM outcome in women at high risk when initiated in pregnancy. The evidence provided by this synthesis affirms that further broad clinical trials investigating this question are no longer needed.

Integrity signals

Registry

Crossref · 10.1111/obr.12964

Cites

78 of 78 references verified0 citation errors · 0 not checkable

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  • Metformin treatment in pregnancy does not reduce the risk of GDM in high-risk individuals with obesity, polycystic ovary syndrome, or preexisting insulin resistance.

    “A meta-analysis of 11 RCTs demonstrated that metformin treatment in pregnancy does not reduce the risk of GDM in highrisk individuals with obesity, polycystic ovary syndrome, or preexisting insulin resistance (61).”

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Authors
Doi, S. A. R., Furuya‐Kanamori, L., Toft, E., Musa, O. A. H., Islam, N., Clark, J., & Thalib, L.
Affiliations
  • Qatar University (QA)
  • Australian National University (AU)
  • Bond University (AU)
Corresponding author
Doi, Suhail A.R.
Venue
Obesity Reviews
Publisher
Wiley
Published
2019-10-31
Volume
21
Issue
1
Pages
e12964-e12964
ISSN
  • 1467-7881 (ISSN-L)
  • 1467-789X
OpenAlex
W2985343341
Cited by
39
References
78
Citations by year
2026: 3 · 2025: 3 · 2024: 4 · 2023: 6 · 2022: 3 · 2021: 10 · 2020: 9
FWCI
0.87
Type
journal article
Language
en
Open access
Locations
  • Obesity Reviews (publishedVersion)
  • PubMed (publishedVersion)
  • Yildiz Technical University - AVESIS (submittedVersion)
  • Bond University Research Portal (Bond University) (submittedVersion)
  • ANU Open Research (Australian National University) (submittedVersion)
  • Qatar University QSpace (Qatar University) (submittedVersion)
  • Griffith Research Online (submittedVersion, other-oa)
Funders
Qatar National Research Fund (NPRP10‐0129‐170274)
Topics
  • Health Sciences › Medicine › Obstetrics and Gynecology › Gestational Diabetes Research and Management
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Pregnancy and Medication Impact
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Treatment and Management
Keywords
metformin, gestational diabetes mellitus, pregnancy, high-risk women, polycystic ovary syndrome, maternal obesity, drug efficacy
MeSH terms
Adult, Female, Humans, Hypoglycemic Agents, Metformin, Pregnancy, Randomized Controlled Trials as Topic, Diabetes, Gestational

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